Maintaining a Healthy Climate Control: Cleaning Air Conditioner Filters

June 21, 2023

To ensure optimal performance, it's important to clean your air conditioner filters regularly. The specific instructions for your system can be found in the manufacturer's instruction manual. If you no longer have the manual, you can visit the manufacturer's website to access a copy.

Here's what you'll need for the cleaning process:

Vacuum cleaner

Gloves

Face mask

Safety glasses

Cleaning cloth

Soap/detergent

Warm water

Step ladder (if necessary)

Before you begin, make sure to switch off the power at the wall!

Step 1: Removing the Filters

The process of accessing the air filters may vary depending on the type of system, but the cleaning method remains the same.

For split systems and window air conditioners, lift the front panel from the bottom and slide out the filters.

In the case of ducted air conditioning, the filters are usually located at the return vent, which can be found within a wall or the roof. You might need a step ladder to reach them. Unscrew or slide open the panel and lift the filter out. Be cautious of falling dust and wear a mask and goggles for protection.

Step 2: Vacuuming Dust Buildup

Cleaning the clogged air filters can be done in various ways, but using a vacuum is the easiest and least messy option. Gently run the vacuum over the filter, ensuring that you suction all the surface material. Remember to handle the reusable filters delicately to avoid any damage.

Alternatively, you can take the filters outside and brush off the dust over a waste bin.

Step 3: Rinsing in Warm Soapy Water

Fill a sink or tub with warm, soapy water and wash the filters. A mild detergent will suffice for this task.

Since filters can be fragile, it's recommended to use a cleaning cloth instead of a coarse brush or scouring pad. Once cleaned, allow the filters to dry completely in a safe area.

Replacement air filters can be obtained from the manufacturer when needed.

Step 4: Cleaning the AC Unit

Gently vacuum around the filter area to remove any residual dust. Wipe the surroundings with a damp cloth as necessary. After ensuring that both the filters and AC unit are completely dry, slide the filters back in, close the cover, and switch the power back on.

Cleaning the Outdoor Unit

The outdoor unit also requires attention. Begin by sweeping or blowing away any leaves or debris surrounding it, as they can obstruct airflow around the internal coils. Next, wipe down the unit to remove dirt buildup and excessive grime.

Using a vacuum or dustbuster, clear any dust that may have entered through the air intake. However, it's important to note that removing the covers yourself is not advised, as it could potentially damage the unit and void the warranty. Instead, it's best to leave the cleaning of the internal components to a professional during an annual service.

By following these steps, you'll be able to maintain your air conditioning unit and extend its lifespan while ensuring a constant supply of fresh, clean air for healthier breathing. Regular maintenance and cleaning are essential for both your comfort and energy savings in the long run.

If you’re in need of service or a new system, contact Alpine Heating & Cooling. Our team has more than 25 years of experience servicing all makes and models. We offer timely, convenient service and provide thorough inspections to catch any potential issues. Visit our website to see a full list of HVAC services, or call (330) 263-0013 for an appointment.

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Why Your Air Conditioner Runs More in August | Alpine

By Tom Markley • August 5, 2026

Have you noticed your air conditioner running longer in August, even when the temperature outside does not seem as high as it was earlier in the summer? You are not imagining it. By late summer, several factors can make your cooling system work harder to keep your Ohio home comfortable. Humidity Makes Your Home Feel Warmer Temperature is only part of the comfort equation. August can bring high humidity, which makes the air feel warmer and forces your air conditioner to remove both heat and moisture from your home. Because moisture removal takes time, your AC may run longer even when the outdoor temperature is not unusually high. Warm Nights Give Your Home Less Time to Cool Down When nighttime temperatures remain warm, your home may not have much opportunity to release the heat it absorbed during the day. Attics, walls, roofing materials and ductwork can hold onto heat. When the next day begins, your air conditioner may already be working against a warm house instead of starting fresh. Your AC Has Been Working All Summer By August, your cooling system may have already logged hundreds of hours of operation. A dirty air filter, debris around the outdoor unit or dust collecting on system components can gradually reduce airflow and efficiency. ENERGY STAR notes that dirty filters restrict airflow and cause heating and cooling equipment to work harder. Checking your filter and keeping the outdoor unit clear of grass, leaves and overgrown plants can help your system operate more effectively. Longer Run Times Are Not Always a Problem An air conditioner running for longer periods is not automatically a sign that something is wrong. Longer, steadier cooling cycles can help maintain a consistent temperature and remove humidity from the air. However, you may need professional AC service if your system: Runs almost constantly without reaching the thermostat setting Produces weak or warm airflow Makes unusual noises Causes a sudden increase in your electric bill Leaves some rooms much warmer than others Frequently turns on and off after only a few minutes Help Your AC Finish the Summer Strong Replace or clean your air filter when needed, keep the outdoor unit free from obstructions and avoid making large thermostat adjustments throughout the day. If your air conditioner is running more than usual and your home is still uncomfortable, Alpine Heating, Cooling, Plumbing & Refrigeration can inspect the system and determine whether it needs maintenance or repair. We serve homeowners throughout Wayne, Holmes and Ashland counties from our Wooster, Ashland and Mt. Eaton locations.