How Big of an Air Purifier Do I Need? A Complete Guide

The size of the air purifier you need depends on the size of the room you want to purify. As a general rule, you’ll want an air purifier that can circulate air through the room’s volume at least 2-4 times per hour. Here’s a more detailed look at how to determine the right air purifier size for your space:

Step 1: Measure the Room’s Dimensions

First, measure the length, width, and height of the room in feet to determine its total volume in cubic feet. An easy formula is:

Length x Width x Height = Volume in cubic feet

For example, a room that’s 12 ft long x 10 ft wide with 8 ft ceilings would be:

12 x 10 x 8 = 960 cubic feet

Step 2: Find the ACH Rating

Next, look at the product specifications for the air purifier’s Air Changes per Hour (ACH) rating. This tells you how many times it can circulate the air in a given space per hour.

For smoke, allergens, and light odors, look for a minimum 2-4 ACH rating. For strong smells like cooking fumes or wildfire smoke, look for 4-6 ACH.

Step 3: Match Room Size to ACH

Match the room’s cubic footage to an air purifier with an appropriate ACH. Here are some general guidelines:

Room Size	Minimum ACH Needed
100 sq ft	2 ACH (can circulate 200 cu ft per hour)
200 sq ft	2 ACH (can circulate 400 cu ft per hour)
500 sq ft	4 ACH (can circulate 2,000 cu ft per hour)
1000 sq ft	4 ACH (can circulate 4,000 cu ft per hour)

For example, that 960 cu ft room from earlier would need an air purifier with at least a 4 ACH rating, able to circulate 3,840 cu ft per hour.

Other Considerations

Room layout, ceiling height, and the type of pollutant can also impact the ideal size:

Prioritize higher ACH for open floor plans
Tall ceilings may need stronger circulation
Cooking, wildfire smoke, and viruses need 4-6+ ACH

Getting the right air purifier size for your space ensures it can actually clean the air effectively. Oversized units will waste energy while undersized ones can’t fully purify the air.

Frequently Asked Questions

1. Do multiple rooms need multiple air purifiers?

Yes, you’ll need one air purifier per room you want to purify. Air purifiers only filter air within a single enclosed space.

2. Where should I place the air purifier in a room?

Put the air purifier centrally in the room and at least a few feet from walls or other obstructions. Avoid corners or alcoves for maximum air circulation.

3. How do I measure a room’s cubic footage?

Measure the room’s length, width, and height in feet then multiply them together to get cubic footage. An online calculator can also help determine cubic feet if the room has an irregular shape.

4. Can an air purifier be too powerful?

Overpowered air purifiers are not necessarily better. Excessively strong fans can stir up pollutants and create noise. Find an air purifier matched to the room’s size.

5. Do air purifiers use a lot of electricity?

Air purifiers vary in energy use, but an efficient unit sized for the space generally costs just pennies per day to run. Larger and oversized purifiers use more electricity.

6. How often should I change the filter?

Most filters should be changed every 6-12 months. Check your model’s specs, as some have indicators to alert you when the filter needs replacement.

7. Can air purifiers reduce airborne viruses?

Air purifiers with HEPA filters can reduce airborne viruses and fine particles. However, additional precautions like masks and ventilation are still important.

For complete details on choosing and using an air purifier for your needs, visit the EPA guide to air cleaners.

Can a Dehumidifier Dehydrate You? Everything you need to know

Can a dehumidifier dehydrate you? Everything you need to know

Using a dehumidifier can potentially lead to dehydration if the humidity levels in your home become too low. Here’s what you need to know about dehumidifiers and dehydration.

How dehumidifiers work

Dehumidifiers remove moisture from the air by pulling air through an evaporator coil, which condenses the moisture into water that collects in a tank. The dehumidified air is then released back into the room at a lower humidity level.

Ideal humidity levels

The ideal indoor humidity range for health and comfort is generally between 30-50%. Below 30%, the air becomes too dry and can lead to dehydration symptoms like dry skin, sinus irritation, itchy eyes, and more.

Risk of dehydration

Using a dehumidifier reduces humidity, so there is a risk of dehydration if the humidity drops too low. Factors that increase dehydration risk include:

Running a dehumidifier continuously or at very high settings
Using a dehumidifier in a small, enclosed space
Failing to drink enough water daily
Certain health conditions like asthma or allergies

Preventing dehydration

To avoid dehydration from a dehumidifier:

Use a hygrometer to monitor humidity and keep levels between 30-50%
Run the dehumidifier only when needed to control humidity
Drink plenty of water throughout the day
Use a humidifier to add moisture back if needed
Treat any medical conditions contributing to dehydration

Signs of dehydration

Watch for these signs that humidity may be too low:

Thirst
Fatigue
Dry skin or irritated sinuses
Headaches
Dizziness
Dark yellow urine

If you experience these, turn off the dehumidifier and drink plenty of water. Add moisture back into the air with a humidifier if needed.

FAQ

Is it bad to run a dehumidifier all the time?

Yes, running a dehumidifier continuously can lower humidity too much and lead to dehydration symptoms. It’s best to use a hygrometer and only run it as needed to control humidity.

What humidity level is too low?

Indoor humidity below 30% is generally considered too low. At this level, dehydration symptoms may occur.

Do dehumidifiers dry out your skin?

Yes, very dry air from a dehumidifier can cause dry, itchy skin. Keeping humidity between 30-50% helps prevent this.

Can dehumidifiers cause sinus problems?

Low humidity can irritate sinuses and worsen sinus symptoms. Use a hygrometer to keep humidity above 30% to help prevent sinus irritation.

Should you run a humidifier and dehumidifier at the same time?

You can, but take care not to over-humidify or over-dehumidify. Monitor humidity levels and adjust each appliance as needed.

What is the ideal humidity for sleeping?

The ideal sleeping humidity is 30-50%. Too dry and it can affect sleep quality and health.

Can dehydration cause anxiety?

Yes, dehydration can cause anxiety symptoms like increased heart rate, dizziness, and restlessness. Be sure to stay hydrated.

The bottom line

Dehumidifiers can potentially lead to dehydration if humidity drops too low. Monitor levels with a hygrometer and drink plenty of fluids to stay hydrated. Adjust dehumidifier settings and use a humidifier as needed to keep humidity within a comfortable 30-50%.

Learn more about ideal humidity levels from the EPA.

The Hidden Dangers of Painting Over Mold

How to Tell If Mold Has Been Painted Over

Discovering mold in your home can be worrying. Mold can damage your possessions, impact your health, and be costly to remove. Often, mold is hidden behind walls or under materials where it can’t be seen. One common way mold gets covered up is by painting over it. Painting over mold might seem like an easy fix, but it doesn’t actually get rid of the mold or stop it from spreading. Here’s how to tell if mold has been painted over in your home.

Signs Mold Has Been Painted Over

There are a few key signs that can indicate mold has been painted over rather than properly removed:

Paint discoloration or bubbling. Mold can cause paint to change color, often showing up as dark spots or patches. It may also cause paint to bubble up or peel away. This happens because mold eats away at the paint and causes it to separate from the surface underneath.
Musty odors. Mold has a characteristic musty, earthy smell. If you smell this odor in an area that seems freshly painted, it could mean mold was painted over rather than remediated.
Recurring mold. If the same area develops mold again after being painted over, it likely means mold was not fully removed before painting. Mold can continue to grow under paint and eventually make its way through.
Moisture issues. Common moisture issues like leaks, flooding, or excess humidity can feed mold growth. If known moisture problems are present along with other signs of paint over mold, it’s very likely mold is present under the paint.
Allergy symptoms. Allergies, asthma, and other respiratory complaints can be signs of a hidden mold problem. If you experience allergy symptoms in the area of suspicious paint even after it’s been painted over, mold may be lurking underneath.

Dangers of Painting Over Mold

Why is it so important to fully remove mold rather than simply painting over it? Painting over mold may seem like a quick and affordable short-term fix, but it comes with major risks.

Hazardous spores can spread. Mold releases tiny spores that contain allergens and irritants. Painting over mold won’t contain the spores – they can still spread through the air to other areas. This continues your exposure.
Mold may come back quickly. Mold can eat through paint because mold needs moisture to thrive. Painting provides moisture condensation underneath, encouraging the mold’s return.
Hidden mold growth is harder to address. Covered up mold is more likely to spread out of sight before being caught. This makes addressing the source of moisture feeding it and fully killing the mold more difficult.
Structural damage can worsen. Left unchecked, expanding mold growth under paint can eventually cause wood rot, weaken drywall, and lead to costly structural issues.
Health risks increase. Breathing in mold spores over time can cause respiratory infections, trigger allergy and asthma symptoms, and worsen chronic conditions like lung disease.

For these reasons, painting over mold provides only the illusion of a fix. Properly identifying and remediating any mold is critical.

Inspecting for Mold Under Paint

If you suspect paint may be hiding mold, a professional inspection is recommended. Mold testing specialists have the expertise and tools to identify mold behind paint and building materials. Here are some methods they may use:

Moisture meter: A moisture meter can detect excess moisture in walls and other materials that may be feeding mold growth. High moisture readings suggest mold may be present.
Borescope: A small camera on the end of a flexible tube, known as a borescope, can be inserted into walls or under materials to visually look for mold.
Dye staining: Stains that react with mold can be applied to painted areas to indicate the presence of mold under the surface.
Bulk/surface sampling: Small samples of building materials may be collected and sent to a lab to test for mold. Swab or tape samples can also be taken from surfaces.
Air sampling: Air quality samples can detect elevated mold spore levels, which may indicate hidden mold reservoirs.

These methods allow inspectors to pinpoint areas affected by mold growth and determine if paint has been applied over mold. This helps guide full mold remediation.

Safely Removing Mold from Under Paint

If you confirm that paint has been applied over mold, professional mold remediation is advised. Here are general guidelines mold removal experts may follow to eliminate the mold problem:

Isolate the affected area from the rest of the home using plastic sheeting. This helps prevent spores from spreading during the process.
Remove all materials where mold growth has been detected. This may involve stripping down to the studs in severe cases. Properly dispose of moldy porous materials that can’t be adequately cleaned.
Clean and dry any surfaces free of mold using detergent and water or EPA-registered antimicrobial products. Completely dry all areas, as moisture feeds mold growth.
Make any necessary repairs to eliminate moisture sources like leaks that allowed mold to form. Improving ventilation may also be needed.
Apply mold-inhibiting paints or primers to treated areas before rebuilding. These help prevent mold from recurring.

Proper containment, removal, and disposal protocols ensure mold growth is eliminated and your health protected. Always have professionals do this hazardous work, especially for large infestations.

Preventing Mold from Developing Under Paint

To avoid dealing with paint over mold again, prevention is key. Here are some tips to help keep your home mold-free:

Maintain low indoor humidity, ideally between 30-50%. Use dehumidifiers, exhaust fans, and air conditioning as needed.
Act quickly to clean up spills, condensation, and leaks. Don’t let excess moisture linger.
Improve airflow by ventilating attics, keeping HVAC drip pans clean, and using fans in humid areas like laundry rooms or bathrooms.
Insulate cold surfaces like pipes and exterior walls to reduce condensation that allows mold to form.
Routinely check for hidden leaks, including inside walls or under floors and ceilings where moisture may accumulate unnoticed.
Clean bathrooms with mold-killing products and keep grout and caulk in tile areas fresh.

Catching and addressing moisture issues right away keeps mold from taking hold in your home. Pay attention to any musty odors or allergy symptoms and inspect paint regularly for early signs of mold. Taking proactive anti-mold measures will help ensure you never have to deal with paint over mold again.

Frequently Asked Questions About Painting Over Mold

Many homeowners have additional questions about the risks of painting over mold. Here are answers to 7 common FAQs.

1. Is it OK to just paint over a small amount of mold?

No, you should never paint over any amount of mold. Even if you only see a small patch, mold may exist elsewhere out of sight. Painting over it traps moisture and allows the mold to continue spreading while hidden. Always fully remove and remediate even small areas of mold growth.

2. Can I use regular paint to cover mold?

Regular paint should never be used over mold, as it won’t contain the growth. At minimum, a mold-inhibiting primer should be applied after remediation before repainting. Hiring professionals to treat mold contamination is highly recommended.

3. What are signs my painted over mold is coming back?

Recurrences of paint discoloration, musty odors, allergy flare ups, and visible mold growth in the same area may all indicate mold is continuing to fester and spread under the paint. Moisture issues in the area also raise concerns that mold problems remain.

4. Can I paint over mold on wood or drywall?

No, porous materials like wood and drywall that contain mold need to be properly removed and disposed of. It’s generally not possible to fully clean away mold below the surface on these types of building materials. New, mold-free materials will need to replace any that contained hidden mold growth.

5. Why does mold make paint bubble?

Mold produces enzymes that break down paint polymers and binders. This causes the paint to lose adhesion and separates it from the surface below, resulting in bubbling, cracking, and peeling. It’s a clear sign mold is active and growing underneath the paint.

6. Can mold smell travel through paint?

Yes, the musty or earthy odor produced by mold can pass through latex and oil-based paints. If you smell a moldy stench in an area that has been recently painted, mold may have been painted over and could still be present.

7. Does mold eat away at paint over time?

Mold consumes and digests paint, using it as a food source. Mold enzymes break down paint polymers while mold hyphae physically penetrate the coating. This eventually causes paint applied over mold to fail as the mold eats through it from underneath.

The Dangers of Painting Over Mold

Mold can seem like a manageable problem to tackle yourself, but covering it up with paint does more harm than good. Painting over mold allows hidden growth to continue, eventually resulting in a much larger and more hazardous infestation. Don’t take risky shortcuts – always have mold properly inspected and removed by trained professionals at the first signs of a problem. Investing in thorough mold remediation will provide true peace of mind that this health hazard has been eliminated in your home.

Here are some useful resources for more information on identifying and removing mold:

Why Does Air Conditioning Make Me Sneeze? Causes and Solutions

Why Does Air Conditioning Make Me Sneeze And What Can I Do About It?

Air conditioning is supposed to keep us cool and comfortable, but for some people, it has the unfortunate side effect of causing sneezing fits. If you find yourself sniffling and sneezing every time you turn on the AC, you’re not alone. Many people experience allergy-like symptoms from air conditioning due to a variety of factors. Read on to learn why air conditioning makes you sneeze and what you can do to reduce or prevent AC-induced sneezing.

Why Does Air Conditioning Make Me Sneeze?

There are a few potential causes for sneezing when the AC is on:

Dry air – Air conditioners cool air by removing moisture, which can dry out your nasal passages and stimulate sneezing.
Dust – Air ducts and vents can accumulate dust and pollen over time, which then get blown around when the AC turns on.
Mold – Excess moisture from air conditioning systems can promote mold growth, and mold spores get distributed through the vents.
Chemical irritants – Some people may be sensitive to the refrigerants or lubricants used in AC systems.
Sudden temperature change – Going from hot outdoor air to a heavily air conditioned room can shock your system and cause sneezing.

If you only sneeze when directly in front of a vent, it’s likely due to blasts of cold, dry air or irritants blown directly at you. But if you sneeze frequently whenever the AC is running, regardless of where you are, you may have generalized sensitivity to one of the factors mentioned above.

Tips to Reduce Air Conditioning Sneezing

While you can’t fully prevent AC-related sneezing without avoiding air conditioning altogether, you can take steps to minimize it:

Use a dehumidifier – Adding moisture back into the air can help counteract the drying effect of air conditioning.
Change filters frequently – Replace AC filters once a month to reduce dust buildup.
Clean vents – Wipe down vents to eliminate dust and mold.
Adjust vents – Direct vents away from you to avoid direct blasts of air.
Close windows – Keep windows closed when AC is on so pollen and outdoor irritants stay outside.
Take allergy medication – Antihistamines can help control sneezing from allergic reactions.
Use a saline spray – Saline nasal spray moisturizes nasal passages and washes out irritants.
Wear a mask – Wearing a face mask filters out some triggers.
Use a portable air purifier – An air purifier near you can remove irritants.
Gradually adjust – When going from hot to cold, give your body time to slowly acclimate.

Trial and error may be needed to pinpoint which solutions help you most. Be sure to give each strategy 2-3 weeks to work before trying another. If sneezing persists despite your best efforts, talk to an allergist about prescription medication options.

When to See a Doctor About Air Conditioning Sneezing

Occasional sneezing from air conditioning is normal, but seek medical advice if:

Sneezing is severe and consistent whenever AC is on
Sneezing persists despite trying various remedies
Other allergy symptoms occur too like itchy eyes, runny nose, coughing, or wheezing
You have difficulty breathing during AC-induced sneezing fits

A doctor can help identify if you have underlying allergies or sensitivities exacerbated by air conditioning. They may recommend medications like antihistamines, nasal steroid sprays, or immunotherapy. For severe cases, they may suggest further evaluation by an allergist.

When to Call a Professional About Your Air Conditioning

If you’ve ruled out medical causes or have those under control but sneezing from the AC continues, your air conditioning system itself may be the culprit. Signs it’s time to call an HVAC professional include:

Musty odors coming from vents
Excess humidity in the home
Visible mold growth around vents or insulation
Water dripping from vents
Ice buildup on cooling coils
Frequently clogged filters

Any of these issues can allow mold, bacteria, or other irritants to grow and get blown into your home’s air. An HVAC technician can inspect for underlying problems, clean your ductwork, sanitize your system, and make any necessary repairs.

FAQ About Air Conditioning and Sneezing

Why does air conditioning make me sneeze but not other people?

Some people are just more prone to sneezing from air conditioning due to inherently sensitive nasal passages or undiagnosed allergies. Older AC units or ductwork may also harbor more dust or mold.

Are AC-related sneezes seasonal?

Sneezing from air conditioning often gets worse during peak allergy seasons when more pollen, mold, and irritants are in the outdoor air being pulled inside. This causes more reaction when those particles get blown directly at you.

Why does my AC make me sneeze at night specifically?

As pollen counts and outdoor irritants rise through the day, air conditioning circulates more of those particles through your home’s air at night. Lying flat also allows nasal drainage to accumulate and further irritate your nose.

Can new AC units cause sneezing?

Yes, new AC units can actually stir up more dust and irritants at first as they disturb any buildup in your ducts from construction or the previous system. Sneezing usually improves after a few weeks of regular use.

Does turning up my AC make sneezing worse?

Yes, setting your AC to higher cooling levels removes more moisture from the air, which can further dry out and irritate nasal passages. Keep temperatures moderately cool.

Should I get a whole-home humidifier?

Portable room humidifiers are usually sufficient. Whole-home humidifiers cost more to install and maintain, and improper humidity levels promote indoor mold growth.

Can I be allergic to my AC itself?

It’s rare, but some people are allergic to components used in AC manufacturing like metals, lubricants, or rubber. This causes year-round sneezing only when directly exposed to the AC airflow.

When should I replace my AC unit?

If your air conditioner is over 10 years old and you have chronic sneezing issues, replacement may be worthwhile. Newer systems have better filtration to remove allergens from the air.

The Bottom Line

Air conditioning is meant to provide comfort, not cause sneezing fits. But for some sensitive individuals, AC can induce allergy-like symptoms. Try the tips provided in this article to minimize air conditioning sneezes. Talk to your doctor if symptoms persist or worsen over time. Identifying and treating the underlying cause, whether it’s allergies, chronic sinus issues, or problems with your HVAC system, is key to finding relief.

For more information, check out the American Academy of Allergy, Asthma, and Immunology’s article on air conditioning tips for allergy sufferers.

Is Your Furnace Causing Allergies? Maintenance Tips

Is Your Furnace Causing Allergies?

Furnaces are essential for keeping our homes warm and comfortable during the colder months. However, they can also contribute to allergy and asthma symptoms if not properly maintained. Dust, pollen, and other allergens can circulate through furnace systems and get blown into the air we breathe. Understanding how your furnace impacts allergies and following some simple maintenance steps can help minimize allergy flare-ups.

How Furnaces Can Contribute to Allergies

There are a few key ways that furnaces can stir up allergens in your home:

Air filters – If the furnace air filter is dirty, dust and other allergens can pass through into the air ducts and spread through your home.
Dusty ductwork – Over time, dust accumulates inside the furnace ductwork. When the system turns on, this dust gets blown out into the living spaces.
Cold air return – Allergens from around the house get sucked into the cold air return and circulated through the home.
Humidifier reservoirs – If you use a furnace humidifier, mold and bacteria can build up in the water reservoir and get dispersed into the air.

For allergy sufferers, this means that running the furnace can stir up dust, pet dander, pollen, mold spores, and other allergens. The constant circulation of air means these allergens stay in suspension rather than settling out. This leads to increased allergy and asthma symptoms like sneezing, coughing, stuffy nose, irritated eyes, and wheezing.

Maintenance Tips to Reduce Furnace Allergens

Here are some furnace maintenance steps you can take to help minimize the allergens circulating in your home:

Change the Air Filter Frequently

Replacing your furnace air filter is one of the most effective ways to reduce airborne allergens. Aim to change the filter once a month during peak heating season. Use a high efficiency pleated filter rated MERV 11 or higher to capture more dust and allergens.

Have Ductwork Professionally Cleaned

Over time, dust builds up in the furnace’s ductwork. Hire an HVAC professional to thoroughly clean the ducts and sanitizing the system. This should be done at least every 3-5 years.

Clean Cold Air Returns

Use a vacuum with a HEPA filter to regularly clean out the cold air return grills. This prevents dust buildup that could get sucked into the system.

Check Humidifier Settings

If you use a furnace humidifier, set it below 50% humidity to discourage mold growth. Also be sure to regularly clean and disinfect the humidifier per manufacturer instructions.

Replace Furnace Filter at Start of Season

When first turning on your furnace for the season, be sure to start with a clean filter. This prevents any dust that settled over the off-season from circulating.

Have an HVAC Professional Service Annually

Have an HVAC technician inspect your furnace before each heating season. They can clean components, check for leaks or cracks, and ensure proper airflow. This helps optimize efficiency and reduce allergen circulation.

Consider a Whole-House Air Purifier

A whole-house air purifier installed on your furnace can filter out allergens as air circulates. Look for true HEPA models rated for your home’s square footage.

Use Standalone Air Purifiers

Use HEPA air purifiers in bedrooms and main living areas to double down on allergen removal. This catches any allergens that make it past the furnace system.

Change HVAC Filters Before Severe Allergy Seasons

Periods like spring and fall when pollen is high are critical times to stay on top of filter changes. Swap filters out more frequently to keep up with increased allergens.

Other Tips for Allergy Relief

While maintaining your HVAC system is important, there are other steps you can take to reduce allergy symptoms:

Use allergen-proof bedding encasements
Limit use of rugs, curtains, and upholstered furniture
Keep pets out of bedrooms as much as possible
Shower after spending time outdoors to rinse off pollen
Close windows and run A/C during peak pollen seasons
Wash bedding on hot water weekly
Invest in an advanced vacuum with HEPA filtration
Consider allergy treatments like nasal sprays, antihistamines, and immunotherapy

When to Call an HVAC Professional

If you are continuing to experience allergy issues even after stepping up your furnace maintenance, it may be time to call an HVAC technician. Signs it’s time for professional help include:

Seeing dirt or dust blowing out of vents
Noticing musty odors when furnace runs
Developing new, unexplained allergy symptoms
Existing allergy symptoms getting dramatically worse
Frequent sinus infections, coughs, or wheezing

A technician can inspect the system for any cracks, leaks, or blockages that could be contributing to poor air quality. They can also evaluate the safety and efficiency of an older furnace to determine if an upgrade is warranted.

Frequently Asked Questions

How often should you change your furnace filter?

For optimal allergy relief, aim to change furnace filters every 30 days during peak heating season. MERV 11 or higher pleated filters are recommended for allergy sufferers.

What causes dust to blow out of vents?

Dust blowing from the vents is typically caused by a very dirty air filter allowing debris to enter the ductwork. Dusty ductwork that has not been properly cleaned can also get stirred up when the furnace runs.

Can replacing a furnace help allergies?

Replacing an older or faulty furnace with a new, efficient model can improve allergies. New furnaces have tighter seals, proper airflow, and compatibility with high-efficiency filters to better filter allergens.

Do air ducts need to be cleaned?

Yes, air duct cleaning by a professional is recommended every 3-5 years to clear out dust, dander, and other allergens that accumulate in the system.

When should you run a furnace humidifier?

Only run a furnace humidifier during the colder months when the air is very dry. Keep the setting below 50% humidity. Turn it off during warmer seasons to avoid potential mold growth.

Can dirty vents make allergies worse?

Yes, dirty air vents prevent proper airflow and can blow dust and other allergens into the home. Cleaning vents regularly with a HEPA vacuum can help reduce allergy flare-ups.

Should I shut off my furnace during allergy season?

It’s not necessary to shut off your furnace completely during allergy season. With proper maintenance like frequent air filter changes, duct cleaning, and professional servicing, you can safely run it to keep your home comfortable.

The Bottom Line

Running your furnace doesn’t have to mean allergy misery. With some diligent maintenance like frequent filter changes, duct cleaning, and professional servicing, you can keep your system running cleanly and minimize allergy triggers. Pay attention to any allergy flare-ups that develop so you can identify necessary system repairs. Keep up with other allergy-proofing steps like using air purifiers, washing bedding often, and managing indoor humidity. With a few adjustments, you can strike a balance between staying cozy and staying allergy-free all winter long.

For more information, visit this National Institute of Health resource .

Mold Growth in Central Air Conditioners – Causes, Health Risks, and Remediation

Mold in Central AC Units: Causes, Health Risks, and Solutions

Central air conditioning systems provide welcome relief from summer heat. But if moisture builds up inside the system, mold can begin to grow. Mold spores circulating through AC ductwork raise health concerns. Let’s examine what causes mold in AC units, the health risks, and how to remove mold for cleaner indoor air.

What Causes Mold to Grow in Central AC Units?

Several factors can cause mold growth inside central AC equipment:

Moisture – Excess humidity from leaks, condensation, or flooded components encourages mold. Older AC systems and ductwork prone to leaks are most vulnerable.

Dust buildup – Dust trapped inside the HVAC system provides food for mold spores. Lack of maintenance and changing filters allows dust to accumulate.

Poor airflow – Reduced airflow slows evaporation, allowing moisture to puddle and mold to thrive. Clogged filters or vents hinder proper airflow.

Temperature fluctuations – Frequent on/off cycling prevents the AC from dehumidifying consistently. This fluctuation in temperature and humidity fosters mold growth.

Contaminated insulation – Insulation inside the air handler or ductwork can harbor mold once it becomes wet. Porous insulation soaks up moisture readily.

With central AC systems, any excess moisture can quickly lead to out-of-control mold colonies. Proper maintenance and moisture control keep mold from gaining a foothold.

Health Dangers of Mold Exposure from AC Units

Mold spores circulating through HVAC systems get distributed throughout the home. Exposure to these spores can trigger allergic reactions and other health issues:

Allergic reactions – Symptoms like sneezing, runny nose, red eyes, and skin rash. Mold allergies are common.
Asthma attacks – Mold spores irritate lungs and can induce asthma episodes in sensitive individuals. Wheezing, chest tightness, coughing, and shortness of breath.
Respiratory infections – Mold spores compromise immune function and increase vulnerability to respiratory infections like pneumonia.
Headaches and fatigue – Toxic molds release mycotoxins that cause headaches, impaired concentration, and chronic fatigue.
Neurological effects – Memory issues, mood changes, and tremors are associated with mold toxin exposure. Children are especially vulnerable.

Chronic mold exposure takes a real toll on respiratory health and everyday wellbeing. Remediating mold provides cleaner, healthier indoor air.

Detecting and Eliminating Mold in AC Systems

If you suspect mold contamination in your central AC equipment, take these steps:

Inspect Visible Components

Remove and inspect air filters, looking for mold growth or dark staining.
Check insulation inside the air handler cabinet for moisture or mold.
Examine ductwork joints and openings for any accumulated dust or debris.
Look for water leaks, rust, or condensation around HVAC components.

Professional Duct Cleaning

Hire an HVAC professional to clean ducts and remove accumulated mold spores.
Use a high-powered vacuum with a HEPA filter to capture mold and debris.
Clean supply and return ducts, registers, diffusers, heat exchangers, and fans.

Apply Antimicrobial Coating

Apply an EPA-registered antimicrobial coating inside ducts and AC components.
These coatings inhibit future mold growth and airborne spore levels.
Routinely retreat ducts and equipment to maintain protective coating.

Address Underlying Issues

Repair water leaks, seal ducts, and insulate condensation-prone areas.
Increase airflow and ensure consistent temperature/humidity levels.
Replace contaminated insulation, filters, and parts that cannot be properly cleaned.

With proactive maintenance and moisture control, you can keep central AC systems free of mold and other contaminants.

Frequently Asked Questions about Mold in AC Units

Here are answers to common questions about dealing with mold in central air conditioning systems:

How often should I change my AC filter?

Change filters every 1-3 months, more often if you have pets or allergy/asthma issues. Clogged filters restrict airflow and allow mold to flourish.

What causes condensation in AC ducts?

Temperature differences between cool supply air and warm duct surfaces cause moisture to condense. Insufficient insulation allows duct sweat and moisture.

Can I clean AC ducts myself?

You can vacuum registers and diffusers, but should hire pros to deep clean ducts. Special tools and training are needed to access and clean the full system.

What health problems are linked to mold?

Allergic reactions, asthma attacks, respiratory infections, chronic headaches/fatigue, and neurological symptoms have been associated with indoor mold.

Should I test my home for mold?

Consider a professional mold inspection if you see visible mold growth or are experiencing unexplained health issues. An inspector can identify contaminated areas.

How do I find and fix leaks in my AC ducts?

An HVAC technician can pressure test the duct system to find leaks. Sealing tape, mastic sealant, metal tape, and mesh can repair leaky duct joints.

Is mold in AC units covered by homeowners insurance?

Most policies exclude mold coverage. However, some companies offer mold coverage as an add-on. Check your policy or consult your insurance agent.

Should duct cleaning be part of yearly AC maintenance?

If you have allergy/asthma issues or odor/debris concerns, consider having ducts cleaned annually. Routine maintenance also helps prevent mold.

How long does it take to remediate mold in an AC system?

Simple surface cleaning may take a few hours. More extensive mold issues could require one week or longer to fully remediate affected areas.

Summary

Mold growth in central AC equipment should not be ignored. Left unchecked, spores distributed through supply ducts can create an unhealthy indoor environment. With routine maintenance, moisture control, professional duct cleaning, and antimicrobial treatment, you can protect your home’s air quality and your family’s respiratory health. Addressing underlying causes like leaks, airflow issues, and insulation prevents HVAC mold from recurring. Reach out to licensed HVAC contractors if you suspect your central air system has a mold problem. With proactive action, you can breathe easier knowing the air flowing from your AC vents is clean.
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Do Air Purifiers Give Off Radiation? Debunking the Myth

Do air purifiers give off radiation? The truth revealed

Air purifiers do not give off harmful radiation. While all electronic devices emit some electromagnetic radiation, air purifiers operate at levels well below safety thresholds and do not pose a health risk.

How air purifiers work

Air purifiers use filters and fans to remove pollutants from the air. Some models may also use ultraviolet light or negative ions to help clean the air. But none of these technologies emit dangerous radiation.

Types of air purifiers

Type	How it Works
HEPA filter	Traps particles like dust, pollen, and smoke
Activated carbon filter	Absorbs gases like VOCs and odors
UV light	Kills mold, bacteria, and viruses
Ionizer	Emits negative ions to attract particles

Do air purifiers emit radiation?

Some air purifiers use UV light or ionizers that could theoretically emit radiation. However, they operate well below hazard levels.

UV light air purifiers

UV light air purifiers contain a UV-C light bulb that emits short-wave ultraviolet radiation. This UV light kills microbes like mold, bacteria, and viruses by damaging their DNA and preventing them from reproducing. However, the UV light is contained inside the sealed purifier where people cannot be exposed to it. UV air purifiers do not leak harmful radiation.

Ionizer air purifiers

Ionizer air purifiers emit negative ions, which are oxygen molecules with an extra electron. These ions cause particles like dust and pollen to stick together and precipitate out of the air. Ionizers do emit some ozone, a form of oxygen that can irritate lungs at high levels. However, ionizers sold today must meet strict ozone emission standards of less than 50 parts per billion.

Are air purifiers safe?

Yes, air purifiers are completely safe when used as directed. All air purifiers sold in the US must meet Electrical Safety standards from organizations like UL and ETL. This includes limits on the electromagnetic radiation they can emit. While air purifiers give off some radiation inherent to all electronics, it is far below amounts that could impact human health.

Frequently Asked Questions

Do HEPA air purifiers emit radiation?

No. HEPA air purifiers use fans and filters to clean the air. They do not emit any harmful radiation.

Do ionizer air purifiers give you cancer?

No. Ionizer air purifiers emit ozone, but at levels far below safety limits when compliant with regulations. There is no evidence ionizers cause cancer.

Is it safe to sit near an air purifier?

Yes. Air purifiers produce less EMF radiation than other common household electronics like televisions, cell phones, and WiFi routers. You can safely sit or sleep near an air purifier without risk.

Do UV air purifiers leak UV light?

No. The UV light is fully contained inside a sealed chamber. No UV radiation can escape the air purifier.

Should you leave an air purifier on all night?

Yes, many air purifiers are designed to run 24/7. Just follow the manufacturer’s instructions. Letting it run overnight can continuously clean the air while you sleep.

Do air purifiers reduce dust?

Yes. Air purifiers efficiently remove dust, dander, pollen, and other airborne particles from the room. This helps reduce settled dust over time.

Do air purifiers help with allergies?

Yes. By removing allergens like pollen and pet dander, air purifiers can provide relief for allergy sufferers.

The bottom line

Air purifiers do not emit harmful radiation. While they generate low levels of EMF inherent to all electronics, it is not enough to impact health. Air purifiers utilize contained UV light and regulated ozone emission ionizers. When used as directed, air purifiers are completely safe.

For more information, check out this article on air purifier safety from the Environmental Protection Agency.

Do HEPA Filters Actually Remove Viruses from the Air We Breathe?

Do HEPA Filters Remove Viruses?

With illnesses like COVID-19 and the flu spreading through the air, many people wonder if using a HEPA filter can help protect them from airborne viruses. HEPA filtration can capture some viral particles, but it should not be relied on as a complete solution. This article will examine how effective HEPA filters are against viruses and what precautions are still needed even when using these specialized filters.

What Are HEPA Filters and How Do They Work?

HEPA stands for “high efficiency particulate air.” To qualify as true HEPA, a filter must remove a minimum of 99.97% of particles that are 0.3 microns in size during testing. This capability makes HEPA filters useful against viruses, but they have limitations.

Particle Size	Removal Efficiency
0.3 microns	99.97%
0.1 microns	99.99%

HEPA filters capture particles through a combination of techniques:

Interception – particles following the air flow path collide with filter fibers and stick.
Impaction – particles too large to avoid fibers get trapped in them.
Diffusion – smallest particles bounce around and adhere to fibers.
Electrostatic attraction – filter materials attract and hold particles.

This mesh of dense fibers catches even very tiny particles like viruses as air passes through. Better filters have more uniform fibers to maximize particle capture.

Can HEPA Filters Remove Viruses Like COVID-19 and Flu?

HEPA filters can capture airborne viral particles, including SARS-CoV-2 (the virus causing COVID-19) and influenza. However, viruses present some challenges:

Small size – Many viruses are smaller than 0.3 microns. HEPA filters are less effective on these tiny particles.
Aerosol transmission – Viruses can travel in aerosols, remaining airborne longer than larger droplets.
Infectious dose – It may take only a few virus particles to cause infection and illness.

Despite these difficulties, HEPA filters still significantly reduce airborne viruses. Studies estimate they remove over 99% of virus-containing droplets and particles. Portable HEPA air purifiers can supplement HVAC filters to improve air cleaning throughout a building.

HEPA Filter Limitations Against Viruses

While HEPA filters capture most viral particles, they cannot completely eliminate the risk of airborne transmission:

Not 100% effective – A small number of viruses can pass through, especially smallest ones.
Bypass – Unfiltered air can bypass filter if not properly sealed.
Saturation – Filters get overloaded as particles accumulate.
Recirculation – Filters do not remove viruses already present in the air.

Additionally, viruses deposited on the filter can remain infectious for hours to days depending on the specific type. Proper handling and disposal is important to avoid transmission from used filters.

Virus	Survival Time on HEPA Filter
SARS-CoV-1	72 hours
MS2 bacteriophage	8-12 hours

Best Practices for HEPA Filtration Against Viruses

While HEPA filters have limitations, they remain a useful part of a complete infection control strategy when implemented properly:

Right filter ratings – Choose true HEPA rated filters, which are 99.97% efficient at 0.3 microns.
Combined ventilation – Supplement with outdoor air intake and exhaust ventilation.
Portable purifiers – Use HEPA purifiers to boost filtration in high-risk areas.
Monitor performance – Check differential pressure across filter to detect any damage or leaks.
Change filters – Replace per manufacturer instructions, typically every 6-12 months.
Proper installation – Ensure tight filter fit to prevent bypass leakage.
Control humidity – Keep relative humidity below 65% to avoid viral particle aggregation.

In critical spaces like hospitals, the highest-rated HEPA filters along with supplemental disinfection techniques are recommended. Commercial buildings should consult HVAC professionals on selecting appropriate filtration levels.

Other Precautions to Take with HEPA Filtration

HEPA filters reduce airborne viruses, but cannot entirely prevent transmission on their own. Even venues using HEPA filters need additional precautions like:

Face masks – Wear tight-fitting masks like N95s, KN95s, or KF94s.
Social distancing – Keep at least 6 feet between people.
Occupancy limits – Reduce density in indoor spaces.
Ventilation – Bring in outdoor air; avoid stagnant recirculation.
Surface cleaning – Disinfect high-touch surfaces frequently.
Hand hygiene – Wash hands thoroughly and often.
Respiratory etiquette – Cover coughs and sneezes.

A “Swiss cheese” model with layered interventions will reduce overall transmission risks more than any single measure alone. HEPA filters serve as an important component when combined with additional evidence-based precautions.

Conclusion

HEPA filtration can capture most airborne viruses in a space, lowering infection risk. However, it has limitations and should not be the sole protective measure. True HEPA filters, properly installed and maintained, remain useful as part of a multifaceted infection control approach. Supplementing with portable purifiers, adequate ventilation, and other hygiene practices is key for protecting public health against illnesses like COVID-19 or influenza.

Here is a 7 question FAQ added to the end of the article:

Frequently Asked Questions

Q: How small of particles can HEPA filters remove?

A: HEPA filters are rated to remove 99.97% of particles sized 0.3 microns. Even smaller particles down to 0.1 microns are captured at 99.99% efficiency or higher.

Q: Can HEPA filters protect against COVID-19?

A: Yes, HEPA filters effectively capture the SARS-CoV-2 virus particles that cause COVID-19. They greatly reduce transmission risks.

Q: Are HEPA filters 100% effective against viruses?

A: No. While HEPA filtration removes over 99% of viral particles, it cannot completely eliminate the risk of airborne transmission on its own.

Q: How often should you change a HEPA filter?

A: Replace HEPA filters based on manufacturer recommendations, typically every 6-12 months. Check pressure readings across the filter to monitor when changeout is needed.

Q: Can HEPA filters trap viruses and then release them later?

A: Viruses trapped on the filter can remain infectious for hours to days depending on the specific type. Proper PPE and handling is important when changing used filters.

Q: Are portable HEPA purifiers or in-duct HVAC filters better?

A: Built-in HVAC filters clean the overall space air. Portable purifiers supplement them by providing intensive filtration in high-risk areas. Using both together gives the best results.

Q: What other steps help reduce viral transmission?

A: Wear tight-fitting masks, keep distance, improve ventilation, use disinfection, wash hands frequently, and cover coughs/sneezes. A layered defense is most effective.
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Can You Run an Air Purifier With the Window Open?

The short answer is yes, you can run an air purifier with the window open. However, doing so may impact the effectiveness of the air purifier. In this article, we’ll explore the reasons why you may want to run an air purifier with the window open, factors that can reduce the air purifier’s performance, and tips to maximize its effectiveness if you need to have the window open.

Why Run an Air Purifier Near an Open Window?

There are a few reasons why you may need or want to run an air purifier near an open window:

To remove odors, smoke, pollen, or other pollutants entering through the open window.
To increase airflow and ventilation.
If placing the air purifier elsewhere would block walkways or furniture.
If noise from the air purifier is less bothersome near the open window.

For example, you may want to open a window to let in fresh air but also need to run an air purifier to filter out pollen, dander, or other allergens coming in from outside. An open window near a busy road could also allow pollutants like car exhaust to enter, which an air purifier could help remove.

Factors That May Reduce Air Purifier Effectiveness

While running an air purifier near an open window is possible, there are some factors that may reduce its effectiveness:

Air exchange rate – Open windows increase ventilation and airflow through a room. This quick turnover of air from outside can limit the time the air purifier has to filter and clean the air.
Unpurified air entering – With a constant source of unfiltered air coming in through the window, the air purifier has to work harder to keep up.
Allergens and pollutants – Depending on wind and weather conditions outside, running the air purifier near the open window may draw in more of the particles you’re trying to avoid rather than push them out.
Room size – Air purifiers are usually designed for closed rooms of certain sizes. Opening a window can throw off that balance and reduce the unit’s cleaning capacity for the space.

The rate of air exchange from outside, combined with the unit’s CADR (clean air delivery rate) will determine if the air purifier can still effectively clean the air with the window open. Larger capacity air purifiers will be better equipped to handle open windows in small spaces.

Tips for Running an Air Purifier Effectively Near an Open Window

If you need to run an air purifier with the window open, the following tips can help maximize its performance:

Close all other windows and doors – This contains the area the air purifier needs to clean.
Position the air purifier 2-4 feet from the open window – Lets it focus on filtering the incoming air.
Point the air purifier towards the window – Helps direct any allergens and pollutants back outside.
Reduce window opening size – Start with windows cracked open just a few inches to allow some air exchange while minimizing impact on the air purifier.
Use highest fan setting – Runs the air purifier at maximum filtration capacity.
Supplement with box or tower fans – Strategically placed fans can help direct incoming air towards the purifier and disturb stagnant pockets of air.
Close the window periodically – Gives the air purifier time to properly clean the room’s air without constant dilution.

Monitoring pollen counts and air quality reports can help determine when it’s best to shut the window altogether. At night or during periods of poor outdoor air quality, you may want to keep windows closed and rely solely on the air purifier.

When an Air Purifier May Not be Enough

While air purifiers can help clean the air, they have limits. If you are experiencing very poor outdoor air quality or are highly sensitive to pollens or pollutants:

Sealing off the room completely and running the air purifier may be a better approach.
Using HEPA air filters in HVAC systems can provide whole-home air purification.
Portable air conditioners with HEPA filters offer an alternative to open windows for warm rooms.
Consulting an indoor air quality expert can help identify the best solutions for your situation.

Air purifiers work optimally when windows are kept closed, but can still provide some benefit if the factors reducing their effectiveness are minimized. Try the tips suggested here if you need to have a window open near your air purifier.

Frequently Asked Questions

1. Do air purifiers work with windows open?

Air purifiers can still provide some benefit with windows open, but their effectiveness will be reduced. The constant influx of unfiltered air limits the time the purifier has to clean the room’s air. Strategic purifier placement and fan usage can help maximize air cleaning.

2. Should you keep windows open with air purifier?

It’s generally recommended to keep windows closed when running an air purifier, especially if trying to control a specific indoor air pollutant like pollen. Open windows increase ventilation but allow more allergens and pollutants to enter unchecked. However, you may need to open windows periodically for fresh air.

3. Do air purifiers work better with windows closed?

Yes, air purifiers work significantly better with all windows and doors closed. This contains the area the purifier needs to clean and prevents constant dilution with untreated outside air. Closed rooms allow air purifiers to recirculate and filter the room’s air multiple times.

4. Should you run air purifier all the time?

Many experts recommend running air purifiers continuously if you want to maintain improved indoor air quality. Airborne particulates accumulate quickly after an air purifier is turned off. However, some models have an auto mode that monitors air quality and adjusts operation as needed to save energy.

5. Is it a waste to run air purifier with window open?

It’s not a complete waste, as the air purifier can still filter some of the incoming air. However, the benefits are significantly reduced compared to running with windows closed. It’s best to limit window opening size, point the purifier towards incoming air, and maximize fan speeds.

6. Do air purifiers pull air from outside?

Air purifiers are designed to filter and recirculate the air within a closed room. They don’t actively pull air in from outside sources. However, opening windows and doors near an air purifier can impact the air currents in a way that draws outdoor air into the room and purifier intake.

7. Can air purifiers remove car exhaust from outside air?

Air purifiers with activated carbon filters can help remove some vehicle exhaust that enters indoors from open windows or doors. However, very high levels from direct sources like highways may overwhelm an air purifier. Sealing off rooms or using whole-home air purification is more effective.

The Bottom Line

Running an air purifier near an open window is generally not ideal, since the constant influx of outside air reduces the unit’s cleaning capacity. But strategic placement and fan usage can still allow it to filter out some allergens, odors, and pollutants entering indoors. Just don’t expect the same level of air purification compared to running with all windows firmly shut.

For further reading, check out this article from EPA.gov on the use of air purifiers and filters in the home.

Is Asbestos Still Dangerous When Wet? The Health Risks Explained

Is Asbestos Dangerous When Wet?

Asbestos is a dangerous material and poses health risks even when wet. The microscopic asbestos fibers can still become airborne when disturbed, increasing the risk of inhaling them and developing asbestos-related diseases.

Asbestos is a naturally occurring fibrous mineral that was extensively used in building materials in the past for its durability, fire resistance, and insulating abilities. However, research showed that exposure to asbestos fibers can cause serious illnesses like mesothelioma, asbestosis, and lung cancer. This led to strict regulations on the use of asbestos in many countries.

When materials containing asbestos are disturbed, it can release microscopic fibers into the air. Exposure typically occurs when people inhale these airborne fibers, often without realizing it. The durability of asbestos fibers allows them to remain in the lungs for long periods. Over time, the embedded fibers cause inflammation, scarring, and genetic damage that can eventually lead to disease.

Asbestos Fibers Can Still Be Released When Wet

Wetting asbestos aims to keep the fibers contained in liquid, preventing them from becoming airborne. However, asbestos fibers can still be released from wet materials if disturbed or agitated vigorously. Activities like scrubbing, scraping, power-washing, or even removing saturated asbestos materials can dislodge fibers into the air. The water itself also becomes contaminated with asbestos and needs proper disposal.

Asbestos Fibers Don’t Dissolve in Water

Unlike other minerals like salt, asbestos fibers do not dissolve or break down when mixed with water. The fibers still remain whole and potentially hazardous if released from the liquid. Even Thames River sediment containing asbestos fibers hundreds of years old can pose a risk if stirred up according to research. Asbestos maintains its fibrous structure and health risks when wet.

Asbestos Can Re-release Fibers as it Dries

Wet asbestos materials like insulation or cement sheets will start to dry following any leak or flood damage. The drying process can release fibers as the asbestos re-emerges to a dried state. Improper drying also leads to material degradation over time, creating more potential for exposure. Professional asbestos removal follows strict procedures to dispose of wet materials safely before drying occurs.

Microscopic Asbestos Fibers Remain Hard to Detect

Wet asbestos still contains the microscopic fibers that make asbestos dangerous to inhale. When released from water, these thin fibers 5,000 times smaller than a human hair become very hard to detect visually. You cannot rely on only seeing fibers in the air to gauge asbestos exposure. Detecting airborne asbestos instead requires specialized equipment and professional testing.

For these reasons, treating asbestos as safe when wet is erroneous. Precautions are still vital to avoid releasing fibers that could be inhaled. The microscopic size and durability of asbestos fibers means wet asbestos should be handled as carefully as dry until properly disposed of by professionals.

Health Risks from Asbestos Exposure

Inhaling or ingesting asbestos fibers can eventually cause toxic effects and serious diseases. Asbestos poses health risks including:

Mesothelioma – This is an aggressive rare cancer affecting the lining of the lungs, abdomen or heart. It is exclusively tied to asbestos exposure.
Lung Cancer – Inhaled asbestos fibers are known to increase the risk of lung cancer, especially in smokers. Non-smokers are also at risk.
Asbestosis – This chronic disease causes lung inflammation and scarring that worsens over time. It restricts breathing and has no cure.
Pleural Plaques – Thick scar tissue spots that grow on the pleura (lining of the lungs and chest cavity). Can cause pain and breathing issues.

These diseases often arise decades after asbestos exposure took place. Once diagnosed, life expectancy ranges from a few months for mesothelioma to only a few years for asbestosis. Even low dose, incidental asbestos exposure can eventually accumulate to cause disease. There are no absolutely safe levels of exposure.

Situations Where Asbestos Exposure Can Occur

Asbestos deposits are found across the world and asbestos has been used in thousands of products. While now banned or restricted in many applications, asbestos can still be encountered in these settings:

Older Homes – Asbestos was used until the 1980s in insulation, shingles, siding and many other building materials. Renovations pose a major risk.
Commercial Buildings – Schools, offices and factories built before the 1990s can still contain asbestos in walls, ceilings, pipes and flooring. Damage or renovations release fibers.
Automotive Applications – Brake pads and older clutches and gaskets contained asbestos that when serviced can expose mechanics.
Power Plants – Asbestos was used extensively at power plants for insulation around boilers and pipes. Maintenance workers remain at risk.
Naturally Occurring Sites – Natural asbestos deposits are found across states like California and Wyoming. Construction projects in those areas can release fibers.
Secondhand Exposure – Handling asbestos materials can release fibers that stick to clothing. Household members of exposed workers were once at great risk.

Recognizing materials that may contain asbestos and using proper safety precautions is key to minimizing exposure from these sources. Never handle suspected asbestos without consulting an expert.

Professional Asbestos Management

Given the hazards wet or dry asbestos can pose, it should only be handled and removed by specialized professionals. Disturbing asbestos unsafely can just worsen exposure. Professional abatement companies follow strict regulations to protect people and property.

Asbestos professionals:

Inspect buildings for asbestos and take samples to identify asbestos content.
Perform risk assessments to identify hazards and priorities for asbestos management.
Develop detailed site-specific plans and procedures for asbestos projects.
Use safety practices that isolate the workspace, control air flow and require specialized respirators and protective equipment. This prevents fibers from spreading.
Wet asbestos during removal and keep it wet until sealed off for disposal. This reduces airborne emissions dramatically.
Dispose of asbestos waste at designated landfills to prevent exposure from dry waste.
Monitor air quality during removal and conduct clearance testing afterwards. This confirms absence of lingering fibers.
Provide documentation like manifests and permits showing proper transportation and disposal.

Homeowners should not attempt DIY asbestos projects. Likewise, some contractors may cut corners to lower costs, putting people at risk of exposure. Always hire accredited asbestos professionals following asbestos work practices to ensure safety.

Asbestos Removal Tips for Homeowners

If you suspect asbestos at home, don’t disturb it. Follow these tips:

Identify suspect materials like old vinyl tiles, insulation and cement products that could contain asbestos. Assume they contain asbestos if unsure.
Limit damage and deterioration through maintenance. Don’t break or sand materials.
Inspect for damage after any work done at home and look for debris that could release fibers.
Consider sealing off damaged areas using plastic sheeting and tape until professional assessment.
Get samples lab tested to confirm asbestos content before doing work.
Hire a certified asbestos company if removal or large repairs are needed. Require proper protective measures.
For minor repairs hire an asbestos-trained professional to use wet methods, protective equipment and proper cleanup.
Ensure asbestos waste is disposed of properly. Confirm disposal facility and permits.
Consider encapsulation (sealing asbestos with a protective coating) as an alternative to removal where possible.
Follow all federal, state and local asbestos regulations which can vary by region.

Trying to handle asbestos yourself without training puts you and your family at risk of exposure. The dangers remain whether asbestos is wet or dry. Safer alternatives are encapsulation or hiring professional asbestos services.

Frequently Asked Questions

1. Why is asbestos so dangerous?

Asbestos is dangerous due to the microscopic size, shape and durability of its fibers. When inhaled, the fibers become lodged in lung tissue where they cause chronic inflammation and scarring over time. This leads to asbestos-related diseases that are often fatal.

2. Is asbestos illegal?

Asbestos is not completely illegal in the US but is heavily regulated. Some specific asbestos-containing products have been banned. Strict rules govern asbestos removal and disposal. Asbestos use in new materials is prohibited.

3. Can you see asbestos fibers?

No, asbestos fibers are invisible to the naked eye. They are around 5,000 times thinner than a human hair. You cannot rely on visibility to determine if asbestos exposure is occurring. Specialized equipment is required to detect airborne asbestos reliably.

4. Does washing asbestos make it safe?

No, washing asbestos does not make it safe. Asbestos fibers do not dissolve or break down in water. They can still be released into the air from wet asbestos materials if disturbed. Handling wet asbestos still requires protective equipment to prevent exposure.

5. Is removing asbestos yourself safe?

Removing any significant amount of asbestos yourself is extremely dangerous and not recommended. The average person lacks the specialized equipment, training and experience needed to prevent asbestos exposure during removal. Always hire certified asbestos professionals.

6. How can you tell if something contains asbestos?

You cannot identify asbestos materials visually. Previously common building products like drywall, tiles and insulation can contain hidden asbestos. The only way to conclusively identify asbestos is through lab testing of material samples, done by asbestos inspectors.

7. Is encapsulation an effective method for asbestos?

Encapsulation involves sealing asbestos material in place with a protective coating rather than removing it. This can be an effective method when done properly by asbestos professionals. It eliminates exposure from deterioration while avoiding risks of removal. Ongoing monitoring is recommended.

Conclusion

In conclusion, asbestos remains a significant health hazard even when wet due to the nature of its durable microscopic fibers. Breathing in these released fibers can eventually lead to life-threatening illnesses for which there are limited treatments available. All asbestos handling jobs, regardless of wetness, necessitate protective equipment and training to minimize risks. Homeowners should refrain from disturbing suspected asbestos materials, keeping them well maintained or sealed off, and only hire accredited asbestos professionals when removal is required. While historically ubiquitous, following proper asbestos safety procedures when identified in buildings can limit exposure and protect health.

External Resources:

Asbestos – US EPA

Asbestos Frequently Asked Questions – US EPA

Asbestos Health Effects – CDC