Is it time too deep clean the HVAC system again?

Keeping the components of the central heat and air unit that you rely on for warm and cool air clean are essential for not only getting the best results out of your AC but also making sure your energy bill stays manageable.

The air conditioning evaporative and condensing coils carry a lot of weight in determining how well your AC unit is able to cool off your house.

When they get dirty it
can decrease the capacity of your unit to cool your home and increase the amount of energy it takes to do so. A air handler with dirty coils can actually increase your energy bill as much as 40%.

But the good news is, you do not have to pay somebody or spend a lot of money on a specific degreaser or cleaner to revive your AC’s copper coils back to their original shine and performance.

A perfect homemade AC coil cleaner for both your evaporative and condenser coils is as easy as going to your cupboard or medicine cabinet and pulling out a couple of household items that most people are sure to have around.

Best Homemade AC Coil Cleaners- Homespun Recipes

1. Vinegar and alcohol

1. Half cup of vinegar
2. Half cup of rubbing alcohol
3. Baking soda

If this sounds familiar, it’s because it’s basically the same ingredients as DIY window cleaner.

Nevertheless, alcohol and vinegar are an excellent combination to make sure that any tiny debris stuck on the coils breaks completely loose.

If you have debris that won’t come off without a little scrubbing, baking soda is a natural cleaner that has a mild abrasive element to it that will help with scrubbing without damaging the coils.
Vinegar is also one of the best cleaning tools to remove mold and mildew.

2. Soapy water and baking soda

1. Water
2. Dish soap
3. Baking soda

Another easy recipe with ingredients that most people have around the house. A bucket of water with a little bit of dish soap and some baking soda if you need something abrasive to loosen up anything stuck to the coils.

With any type of homemade AC coil cleaner, remember to use a light brush and take it easy on the coils. You don’t want to scratch the coils or bend the fins that protect the coils.

3. Bleach and Water

1. Bleach
2. Water

A three to one combination of water and bleach (bleach being the smaller portion) in a spray bottle is an excellent homemade solution to clean the coils on your air conditioner.
Not only will bleach kill mold and mildew, it will also help prevent it from coming back.

Warning: If you don’t like the smell of bleach or if you have any type of adverse challenges with bleach, you probably want to stay away from this option. The reason is there is a chance that the smell will creep into your ventilation and into your home.

Cleaning air conditioner coils with vinegar

4. Vinegar and water

Using a homemade AC coil cleaner made up of simply vinegar and water is an excellent easy do-it-yourself solution for cleaning the coils in your AC unit.

Equal parts:

1. White vinegar
2. Water

White vinegar is one of the most effective mildew and mold cleaners there is. It not only removes mold, it leaves behind disinfectant properties that hinders mold from coming back.

5. Homemade Enzyme Cleaner

Natural enzymatic cleaners use enzymes, typically derived from bacteria or yeast, to break down organic substances like grease, oil, and biofilm.

These enzymes act as catalysts, speeding up the cleaning process without the need for harsh chemicals, making them eco-friendly and safe for use around pets and children.

A simple homemade enzymatic cleaner recipe:

Combine:
2-3 medium-sized citrus fruits (such as oranges, lemons, or limes)
about 1 cup of sugar
around 4 cups of water

This mixture should be allowed to ferment in a sealed container for 2-3 weeks to develop the enzymes effectively. After fermentation, the liquid can be strained and diluted with water for use.¹

6. Hydrogen Peroxide

Hydrogen peroxide works as an antifungal and antibacterial agent primarily due to its oxidative properties. This process not only helps in disinfecting the coils but also in removing mold and mildew, which can significantly impact air quality and the efficiency of the AC unit.

A recommended mixture is:

One part hydrogen peroxide to four parts water.

This solution can then be applied to the coils using a spray bottle. After spraying, allow the solution to sit for a few minutes to work on the mold and mildew, then rinse the coils thoroughly with water to remove any residue​.

7. Homemade Mini Split Cleaning Solution

Mini-split AC systems, known for their efficiency and flexibility, present unique maintenance challenges compared to traditional central air conditioning systems.
Their compact, ductless design requires specialized care, particularly for the indoor units that accumulate dust and allergens.

A tailored homemade cleaning solution for mini-splits can include:

A gentle, non-corrosive mixture such as diluted mild dish soap and water, or a half-and-half mix of water and white vinegar.

This solution can be applied using a spray bottle directly onto the coils and blower wheel of the indoor unit, avoiding electrical components.

After application, a soft brush or cloth can be used to gently remove any debris, followed by a clean water rinse to ensure no residue is left behind.

5.Compressed air and dust buster

What could be an easier solution to cleaning the AC coils than using an air compressor to simply blow off any debris.
Using a compressor to blow the debris and dirt off of the coils is very effective but just hitting the area with a sudden force of air will scattered dust and debris all through your AC unit.

So before using forced air to clean the unit, it is best to take a dust buster or vacuum with the right attachments to get and get as much dirt and debris up as you can beforehand.

Another reminder. The fins that surround the coils are made out of very light tin. Be careful not to barrel down with the air. Keep it three or four inches away to ensure you do not bend the fins.

6. Garden hose

On the evaporative side of the AC which is outside, you will find that keeping the area tidy around your AC unit will help your AC run much more efficiently.

Simply taking a garden hose and applying some of pressurized water to the outside of your unit and even into any of the inside that you can actually reach with a garden hose spray attachment will help your AC run easier and along with keeping the air conditioner filters replaced will give you less opportunities with your unit freezing over.

Maintenance Schedule

For an effective AC maintenance schedule, consider the following guidelines based on your environment:

In dusty areas or homes with pets, clean the AC coils every 3 months to prevent buildup.

In less dusty environments, a bi-annual cleaning in spring and fall is sufficient.

Always ensure to replace or clean filters regularly, ideally every month, for optimal air quality and efficiency.

Safety Precautions

When using homemade AC coil cleaners, it’s crucial to prioritize safety.

Handle all chemicals, especially bleach, with care, using gloves and eye protection.

Ensure proper ventilation to avoid inhaling fumes.

When accessing outdoor units, use stable ladders and have someone spot you to prevent falls.

Always follow manufacturer guidelines for your AC unit to avoid damaging components.

Faq

1. Can I use these cleaners on all types of AC units?

   Most homemade solutions are safe for various AC units, but check manufacturer guidelines.

2. How often should I clean my AC coils?

   Clean coils every 3-6 months, depending on usage and environmental factors.

3. Can homemade solutions damage my AC unit?
   

   If used correctly, they’re generally safe, but always test on a small area first.

4. What are the signs my AC coils need cleaning?

   Reduced efficiency, higher energy bills, and poor cooling performance indicate dirty coils.

5. Are there safety precautions for using homemade cleaners?

   Wear gloves and ensure good ventilation, especially when using solutions with vinegar or hydrogen peroxide.

6. Can cleaning improve energy efficiency?

   Yes, regular cleaning can maintain optimal efficiency and lower energy costs.

7. How to ensure cleaner safety for specific AC models?

   Consult your AC’s manual or contact the manufacturer for recommendations.

8. Is rinsing required after cleaning with homemade solutions?

   Yes, to prevent residue buildup and potential damage.

9. Can I clean the outdoor unit with homemade solutions?

   Yes, but be cautious of electrical components and water-sensitive areas.

A window air conditioner is one of the easiest ways to efficiently cool off a room.

But what happens when an unexpected summer rain hits and water starts pooling up in your window AC ?

It can be a pain to deal with, but fortunately, there are some things you can do to get the water out and keep it from happening again down the line.

Window Air Conditioner Full of Water After Rain

1.Getting the Water Out

The first thing to do is get the water out of the window AC unit.

And the first step to working with a window AC regardless of what kind of repair you’re doing on it, used to unplug it.

You don’t want to risk getting shocked especially when you are talking about dealing with water and electricity.

1. Locate the drain hole.

The drain hole is typically located at the bottom of the window AC. It’s designed to allow the water that is built up from condensation to have a place to drip out of.

2. Clear any debris

Since there is already a drain hole that should be allowing the rain water that has gotten into the air conditioner to drain out.

The logical first step is to make sure that the drain hole is clear and doesn’t have any debris.

You can remove any blockage that may have gotten in there, typically very easily with a pipe cleaner or small cleaning brush.

You can even use a Shop-Vac or air compressor If you want to go that far.

3. Fix the tilt

If you clean out the drain hole and there is still water collected in the bottom of the AC, then the tilt of the air conditioner maybe slightly off.

Which basically means that the water is not running towards the drain and is puddling up somewhere.

Most window air conditioners are required to have a slight tilt towards the rear. It’s that tilt that provides a pathway for the water to run towards the drain hole.

But there are window ACs that require the unit to be completely level for the water to drain evenly out of the drain hole.

If you have the type of window AC that requires a tilt, The easiest thing is to use a level to get it square then let it fall to the rear till you get the bubble in the middle of the level to one side.

If you have a window AC that requires it to be completely level, use the same leveling tool to make sure the bubble is sitting directly in the center when you set it.

You should definitely check your manual to find out which type you have.

Keeping the water out.

Even though window air conditioners may not be completely waterproof, they are designed to withstand the elements.

And if there is a rainstorm with high winds, there is a chance that rain is going to get into your window AC.

But that in itself is not a problem.

So the best way to keep the water out of your window air conditioner is the same methods that you used to get the water out.

1. Remove anything that could be blocking the drainage hole on the bottom of the outside of the air conditioner.

2. Make sure the tilt is correct.

Most window air conditioners require that you slightly tilt the air conditioner backwards to provide a path for the water to flow to the drain.

How much of a tilt? About 5° or when the bubble in the middle of the level is on one side of the center.

Other window air conditioners require that the air conditioner be completely level for the water to drain properly.

Check your manual to find out which one you have.

Window Air Conditioner Not Working After Rain

When your window air conditioner stops working following a rainstorm, it’s crucial to understand the underlying causes for effective troubleshooting. Here are two common issues to consider:

Tripped Circuit Breaker

• Electrical Overload: A tripped breaker often indicates an electrical overload. If your AC unit, along with other appliances, is drawing more power than the circuit can handle, it may trip the breaker as a safety measure.
• Power Surges: During storms, power surges are common and can trip the circuit breaker. These surges can occur due to lightning strikes or fluctuations in the power grid.
• Inspect and Reset: Check your home’s electrical panel for any tripped breakers. If you find the corresponding breaker for the AC unit tripped, reset it. If it trips again, it’s a sign of an underlying issue that needs professional attention.

Water Intrusion

• What is Water Intrusion?: Water intrusion refers to the entry of water into parts of the AC unit where it can cause damage, especially the electrical components.
• How It Occurs: During heavy rain, especially if the unit is improperly sealed or installed, water can seep into the internal parts. This is more likely if the unit has gaps allowing water to enter or if the drain system is overwhelmed.
• Risks Involved: Water inside the unit can lead to short circuits or corrosion of electrical parts, which can cause the unit to malfunction or not start.
• Safety Measures: If you suspect water has entered the internal parts of the AC, it’s important to unplug the unit and avoid using it until it has been checked and cleared by a professional.

Steps to Take

• Professional Inspection: If your unit has stopped working after rain and you suspect either of these issues, the safest course of action is to seek professional help. A qualified technician can safely assess and repair any damage caused by water intrusion or electrical issues.
• Preventive Maintenance: Regularly inspect the seal and installation of your unit to ensure it’s protected against rainwater. Also, consider installing a surge protector to safeguard against electrical surges during storms.

Understanding these potential causes and taking the right steps can help you effectively address issues with your window AC unit after rain, ensuring its longevity and efficient operation.

Advanced Electrical Checks and When to Call an Electrician

If your window air conditioner stops working after a rainstorm and you’ve determined that the circuit breaker has not tripped, there are a couple of additional steps you can take to diagnose the problem. However, remember that safety is paramount, and when in doubt, it’s always best to consult a professional.

Checking the Outlet

• Test with Another Device: To determine if the issue lies with the outlet, try plugging in a different, small appliance (like a lamp or a phone charger) to see if it works. This can help you ascertain whether the problem is with the AC unit or the outlet.
• Signs of Outlet Damage: Look for signs of damage or wear on the outlet, such as discoloration, a burnt smell, or visible sparks. These could indicate serious issues that need immediate attention.

When to Call an Electrician

• No Power from the Outlet: If other devices also fail to work when plugged into the same outlet, there might be an issue with the outlet or the wiring in the wall. This is a job for a licensed electrician.
• Recurring Breaker Trips: If the breaker for the AC unit trips repeatedly, this could indicate a more serious electrical issue, such as a short circuit within the AC unit or in your home’s wiring.
• Safety Concerns: Electrical work can be hazardous. If you have any concerns about your ability to safely perform these checks, or if you notice anything unusual like a burning smell or discolored outlet, it’s time to call in a professional.

Potential AC Component Issues

• Internal Damage: If the outlet is functioning correctly but the AC unit still won’t turn on, the issue may lie within the AC’s internal components. This could be due to water damage, electrical faults, or other malfunctions.
• Professional AC Repair: In this case, it’s advisable to have a professional HVAC technician inspect the unit. They can assess whether the unit can be repaired or if it needs to be replaced.

Conclusion.

Window Air Conditioner Full of Water After Rain

 A window air conditioner full of water after rain comes down to a clogged drain hole.

Use a pipe cleaner or brush and clear out the drainage hole and the water should flow out naturally.

But if the water does not completely drain, there is probably an issue with how the air conditioner is tilted.

Most air conditioners are meant to be tilted so that the water has a clear path to the drain.

Some are meant to be completely level for the water to drain.

Check your manual to find out which one you have and proceed to fix your tilt

Running the AC Fan Only at Night

Key Takeaways

• Efficiency of Nighttime AC Use: Running the AC fan only at night is an energy-efficient practice that can reduce electricity bills and improve sleep comfort, especially in cooler climates.
• Drawbacks of Fan-Only Mode: This approach may not adequately cool the home during hot nights and lacks dehumidifying capabilities, potentially leading to increased indoor humidity and insufficient air quality control.
• Benefits of Programmable Thermostats: Programmable thermostats provide a solution by allowing automated scheduling for AC use, balancing comfort, energy savings, and addressing humidity and air quality concerns.
• Advantages of Wi-Fi Enabled Thermostats: Wi-Fi enabled programmable thermostats add the convenience of remote control and monitoring, offering flexibility, customizable alerts, and maintenance reminders for a more efficient home climate management.

Introduction

Living in an area where the climate swings from scorching desert heat to refreshing cool breezes can be quite a challenge, especially when it comes to getting a good night’s sleep.

You might find yourself going to bed feeling uncomfortably hot, only to wake up in the middle of the night shivering from an unexpected drop in temperature.

This is where smart usage of your air conditioning (AC) system comes into play, particularly in understanding and utilizing the fan settings effectively.

Your AC thermostat typically offers two fan settings: “On” and “Auto.”

The “On” setting keeps the fan running continuously, providing consistent air circulation but potentially leading to increased energy usage and higher humidity levels.

In contrast, the “Auto” setting is more energy-efficient, where the fan operates only during active cooling cycles.

This mode can help maintain comfortable temperatures without the unnecessary energy expenditure.

In this article, we’ll explore the strategy of running your AC fan only at night, a practice that can be particularly beneficial in regions with such drastic temperature variations.

By effectively cycling off the AC and relying on the fan during cooler nighttime hours, you can enjoy significant energy savings while ensuring your comfort throughout the night.

Running your AC fan only at night, especially in fan mode, can be a beneficial practice for several reasons, particularly if you’re looking to reduce your electricity bills and improve indoor air quality.

Benefits and Drawbacks of Running the AC Fan Only at Night

• Energy Savings: When you set your AC to fan mode at night, it turns off the compressor, which is responsible for the cooling. The fan alone circulates the air without cooling it, leading to reduced energy consumption. Since the temperature usually drops at night, the need for active cooling decreases, making this an efficient way to maintain comfort without incurring high energy costs.
• Improved Indoor Air Quality: The fan mode helps circulate indoor air. This can be particularly beneficial if you have closed your windows and doors to run the AC during the day, as it prevents the air from becoming too stale.
• Preventing Mold Growth in the AC: Running your AC in fan mode can help evaporate any moisture that’s accumulated in the coils and drain pan, reducing the likelihood of mold and mildew growth inside the unit.
• White Noise for Better Sleep: Some people find that the white noise generated by the AC fan mode can be soothing and help them sleep better.

However, there are a few considerations to keep in mind:

• No Cooling Effect: The fan mode does not cool the air since the compressor is off. If the night is particularly warm, you might not find relief from the heat.
• No Dehumidifying Effect: The fan mode does not dehumidify the air. In fact, it might slightly increase indoor humidity levels.
• Increased Maintenance: Running the fan constantly can lead to quicker clogging of filters and may require more frequent maintenance.

How to Manually Set a Thermostat to Run the Fan Only

To set up your AC fan for night use, simply switch your AC to the fan mode using your remote or thermostat. This setting typically shows a fan icon. It’s also advisable to set your AC to “Auto” mode during the day, which runs the fan only when cooling is needed, and then switch to fan mode at night.

Manually adjusting the thermostat every night and morning can be cumbersome. This is where a programmable thermostat can be extremely beneficial.

Programmable Thermostats

A programmable thermostat automates the control of your HVAC system, making it easier to manage your AC’s fan mode and other settings based on your schedule. Here’s how it could help you achieve your goal of running the AC fan at night without manual intervention:

• Automated Schedule Setting: You can program the thermostat to automatically switch your AC to fan mode at a specific time each night and then revert to regular cooling mode or turn off in the morning. This eliminates the need to remember to adjust the settings manually.
• Customizable for Daily Routines: Different schedules can be programmed for weekdays and weekends, accommodating your routine. For instance, you might prefer a different schedule on nights when you go to bed later.
• Energy Efficiency: By ensuring that the AC runs only when needed, programmable thermostats can help save energy and reduce costs, aligning with your goal of energy savings.
• Convenience and Comfort: With a programmable thermostat, your home environment can be automatically adjusted to your preferences, providing comfort without the hassle of manual adjustments.
• Advanced Features: Many modern programmable thermostats offer additional features like remote control via apps, learning your preferences over time, or even integrating with other smart home systems for a more connected home experience.

Benefits and Drawbacks of Using a Programmable Thermostat

Choosing the Right Thermostat

When selecting a programmable thermostat, consider the following:

• Compatibility: Ensure the thermostat is compatible with your HVAC system.
• Features: Look for features like Wi-Fi connectivity for remote control, learning capabilities, and compatibility with smart home devices.
• User Interface: Choose a thermostat with an intuitive interface, making it easy to program and adjust schedules.

Getting Started with a Programmable Thermostat:

1. Select a Model: Choose a thermostat that fits your system and needs.
2. Installation: Follow the manufacturer’s instructions for installation, or consider professional installation if you’re not comfortable doing it yourself.
3. Programming: Set up your preferred schedule according to the instructions. You might set it to switch to fan mode at your bedtime and revert to the previous setting in the morning.
4. Adjust as Needed: Over time, you can adjust the programming to better fit your schedule and comfort preferences.

Modern Smart Thermostats

Often come with mobile control capabilities that provide several benefits:

• Remote Access: You can control your thermostat from anywhere using your smartphone, computer, tablet, or iPad. This means you can adjust your home’s temperature settings whether you’re at home, at work, or even on vacation.
• Ease of Use: Mobile apps provided by thermostat manufacturers, like Honeywell and Lennox, are user-friendly and intuitive. They make setting up and adjusting your thermostat’s schedule straightforward.
• Customizable Alerts and Reminders: These apps can send you alerts for unusually high or low temperatures and remind you when it’s time for routine maintenance tasks like air filter replacements.
• Vacation Settings: If you’re going away, you can easily set a vacation mode to save energy while ensuring your home stays at a safe temperature.
• Weather Alerts: Some apps also provide weather alerts specific to your area, helping you make more informed decisions about your HVAC settings.
• Programming Tips: To maximize the benefits, it’s recommended to avoid frequent adjustments and drastic temperature changes. For instance, setting a consistent program for weekdays and a different one for weekends can help maintain comfort and efficiency.

With a Wi-Fi-enabled programmable thermostat, you can also enjoy the advantage of controlling your home’s temperature on the go, ensuring you don’t waste energy if your schedule changes unexpectedly.

Examples of Scheduling a Programmable Thermostat

Scenario 1: Energy Savings with Comfort

• Daytime (When Home): Set the thermostat to a comfortable but energy-efficient temperature, such as 78°F (25°C) during the summer. This setting is warm enough to save energy but cool enough for comfort.
• Nighttime (Sleeping Hours): Program the thermostat to switch to fan mode around your bedtime. This will circulate the air without the extra cooling, saving energy. If humidity is a concern, set the AC to turn on for cooling if the indoor humidity rises above a certain level.
• Morning: Schedule the AC to start cooling 30 minutes before you wake up, ensuring comfort when you start your day. Set it back to energy-saving mode when you leave for work.

Scenario 2: Maximizing Air Quality

• Daytime (When Home): Keep the AC on a comfortable setting while ensuring it cycles on occasionally to filter the indoor air.
• Evening to Early Night: Use the AC in cooling mode to reduce humidity and maintain air quality.
• Late Night to Morning: Switch to fan mode to save energy. If equipped with humidity sensors, program the AC to activate if humidity levels rise too high.
• Morning: Before waking up, revert to the cooling mode to reduce any overnight humidity increase and ensure a comfortable start to your day.

Best Programmable Thermostats

1. Google Nest Learning Thermostat
   • Rating: Best Overall
   • Features: Learns and adapts to your habits, voice control with Google Home, energy-efficient.
   • Design: Sleek and modern with various finishes.
   • Purchase Here
2. 
   Emerson Sensi Wi-Fi Smart Thermostat
   • Rating: Best for Budget-Conscious Consumers
   • Features: Affordable, energy-saving, smart alerts, no common wire required for installation.
   • App Control: Easy adjustments through its app.
   • View Here
3. 
   ecobee SmartThermostat
   • Rating: Best for Smart Home Integration
   • Features: Room sensors for even temperature, built-in Amazon Alexa, compatible with various smart home systems, music streaming capability.
   • Voice Control: Offers extensive smart features through voice commands.
   • Purchase Here
4. 
   Amazon Smart Thermostat
   • Rating: Best Value Smart Thermostat
   • Features: Affordable smart thermostat, DIY installation, energy consumption tracking.
   • Integration: Works seamlessly with Amazon’s Alexa app.
   • Purchase Here

Please note that while programmable thermostats, including top models like the Google Nest Learning Thermostat, offer advanced features and efficiencies, common issues such as improper wiring, low battery, and connectivity problems can occur. These issues are often due to installation errors or routine maintenance needs rather than the units themselves. Proper installation and regular maintenance are key to ensuring the optimal performance of any programmable thermostat.

Summary

Running the AC only at night, particularly in fan mode, offers energy savings and better sleep comfort, especially in cooler climates. However, it may not be effective in reducing humidity or providing adequate cooling during hotter nights.

Programmable thermostats present a solution by automating HVAC control, offering remote access and customized settings for different lifestyles. These devices help in balancing comfort and energy efficiency, although they require proper installation and maintenance to avoid common issues like faulty wiring or battery problems.

Mold in Air Conditioning Units: Causes, Health Effects, and Prevention

Mold growth in air conditioning units is a common problem that can have negative effects on indoor air quality and health. This article will explain why mold grows in AC units, the health risks, and how to prevent and remove mold.

What Causes Mold to Grow in AC Units?

Mold spores are present everywhere in the environment. When conditions are right, these spores multiply quickly to form mold colonies. The typical conditions that encourage mold growth in air conditioning units include:

• Moisture – High humidity and condensation provide the moisture mold needs to thrive.
• Standing water – Clogged AC drains allow water to pool and stagnate.
• Dust buildup – Dust particles provide a food source for mold.
• Poor airflow – Stagnant air encourages mold growth.

Health Risks of Mold in AC Units

Breathing in mold spores and particles can trigger allergic reactions and asthma symptoms. Other potential health effects include:

• Wheezing, coughing, and chest tightness
• Irritated eyes, nose, throat, and skin
• Headaches, fatigue, and memory problems
• In rare cases, a serious fungal infection in lungs or sinuses

People with asthma, allergies, or compromised immune systems are most vulnerable to the effects of mold. But even healthy people may have reactions after repeated exposure.

Preventing Mold Growth in AC Units

Here are some tips to help prevent mold in air conditioners:

• Change filters regularly to allow proper airflow.
• Inspect drain lines for clogs and clear them as needed.
• Keep coils and fins free of dust and debris.
• Ensure condensate pans drain properly.
• Seal ductwork to prevent leaks and condensation.
• Install a dehumidifier to control indoor humidity.
• Consider using DampRid, which absorbs excess moisture in air.

Removing Mold from AC Units

If mold is already present, follow these steps for safe removal:

1. Turn off and unplug the AC unit.
2. Wear gloves, goggles, and a respirator for protection.
3. Clean coils and fins with a coil cleaner like Arm & Hammer Coil Cleaner.
4. Scrub away surface mold on other components with detergent and water.
5. To kill mold, spray a solution of 1 part bleach to 10 parts water.
6. Once cleaned, dry all components thoroughly before turning AC back on.

For severe mold contamination, replacement of insulation or other components may be necessary. It’s also a good idea to have HVAC professionals inspect and sanitize ductwork.

Frequently Asked Questions

What are some early signs of mold growth in an AC unit?

Some early signs include musty odors, visible mold growth around vents or filters, increased humidity/condensation, and health symptoms when the AC runs.

Should I have my AC ducts cleaned if there is mold?

Yes, HVAC professionals should thoroughly clean moldy ductwork using vacuuming, brushing, and sanitizing methods.

Can window AC units get mold too?

Yes, mold can grow in window units, especially in the condensate drain area. Follow the same preventive and cleaning steps.

Is it safe to spray bleach directly on AC coils?

Bleach should be diluted 10:1 with water first. Check the manufacturer’s cleaning guidelines before applying any chemicals.

What is the black stuff I see in my AC drain line?

Black substance in drains is usually mold growth, which indicates standing water. Unclog the drain and sanitize to remove it.

Should I replace my AC unit if there is extensive mold?

If mold contamination is severe, replacement may be the best option. An HVAC professional can assess whether the unit can be sufficiently cleaned.

Can poor air quality from AC mold make pets sick too?

Yes, the allergens and toxins from AC mold can also affect pets. It’s best to address the issue promptly.

The Bottom Line

Mold growth is common in air conditioning systems due to the presence of moisture, dust, and condensation. But left unchecked, AC mold can degrade indoor air quality and lead to potential health issues when spores are inhaled. By staying vigilant about maintenance, quickly addressing any mold issues, and having regular professional cleanings, you can help keep your AC system mold-free and your air healthy.

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.

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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