Air Conditioner Maintenance Tips and More


As the summer temperatures continue to climb, make sure that you are prepared!!

Regular maintenance of your air conditioners and dehumidifiers is important to keep them running at peak efficiency and to save on your energy bills.

An air conditioner’s filters, coils, and fins require regular maintenance for the unit to function effectively and efficiently throughout its years of service. Neglecting necessary maintenance ensures a steady decline in air conditioning performance while energy use steadily increases.

Air Conditioner Filters

The most important maintenance task that will ensure the efficiency of your air conditioner is to routinely replace or clean its filters. Clogged, dirty filters block normal airflow and reduce a system’s efficiency significantly. Replacing a dirty, clogged filter with a clean one can lower your air conditioner’s energy consumption by 5% to 15%.

Some types of filters are reusable; others must be replaced. They are available in a variety of types and efficiencies. Clean or replace your air conditioning system’s filter or filters every month or two during the cooling season. Filters may need more frequent attention if the air conditioner is in constant use, is subjected to dusty conditions, or you have fur-bearing pets in the house.

Air Conditioner Coils

The air conditioner’s evaporator coil and condenser coil collect dirt over their months and years of service. A clean filter prevents the evaporator coil from soiling quickly. In time, however, the evaporator coil will still collect dirt.  To avoid this problem, check your evaporator coil every year and clean it as necessary.

You should minimize dirt and debris near the condenser unit. Your dryer vents, falling leaves, and lawn mower are all potential sources of dirt and debris. Cleaning the area around the coil, removing any debris, and trimming foliage back at least 2 feet (0.6 meters) allow for adequate airflow around the condenser.

Coil Fins

The aluminum fins on evaporator and condenser coils are easily bent and can block airflow through the coil. Air conditioning wholesalers sell a tool called a “fin comb” that will comb these fins back into nearly original condition.

Condensate Drains

Occasionally pass a stiff wire through the unit’s drain channels. Clogged drain channels prevent a unit from reducing humidity, and the resulting excess moisture may discolor walls or carpet.

Window Seals for Room Air Conditioners

At the start of each cooling season, inspect the seal between the air conditioner and the window frame to ensure it makes contact with the unit’s metal case. Moisture can damage this seal, allowing cool air to escape from your house.

Hiring a Professional

When your air conditioner needs more than regular maintenance, hire a professional service technician. A well-trained technician will find and fix problems in your air conditioning system.We have a team of full-time repair technicians, with years of experience in diagnosing and repairing equipment at JB Hostetter in Mount Joy, PA. We service almost every single thing we sell that can be repaired, including air conditioners and dehumidifiers. If we sell it to you, our staff has the capability and knowledge to fix it.


If all else fails, we stock  an assortment of fans, screens, and air conditioners.


Make sure that you measure the width and height of the window opening so

that we can determine the one that will be the best fit for your home.

We handle a wide assortment of air conditioners for your home, office, or

other area of need. Our selection includes built in / wall mounting units

and window mounting units. We also stock free standing portable air

conditioning units. The brands that we carry include Danby, Frigidaire, and GE and range from 5,000-24,000 BTU.

Our experienced sales staff can help you pick out the right air conditioner for you.


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Related Articles from our website:

Check out the Energy Saver 101 Infographic: Home Cooling from the U.S Dept. of Energy for more ways to help improve your comfort and the efficiency of your air conditioner.

See more details about air conditioner maintenance from the Department of Energy