Service, Cleaning, and Maintenance of Wall-Mounted Air Conditioners

How to Maintain and Clean an Air Conditioner

Maintaining a wall-mounted air conditioner involves two steps. First, clean the filters every 2 to 4 weeks during the heating or cooling season. Next, have a technician perform a thorough professional inspection once a year and a deep cleaning every 5 years. The result: improved efficiency, healthier air, and a longer lifespan for your unit. Maintaining a wall-mounted air conditioner involves all the steps needed to keep your unit clean and running efficiently: cleaning the filters, inspecting the coil, and checking the drainage. It’s a simple routine—partly something you can do yourself, and partly something best left to a professional, such as the team at Enviro Confort.

Why Maintaining Your Wall-Mounted Air Conditioner Makes All the Difference

A neglected air conditioner works harder but delivers poorer results. Dust and mold build up in the filters and on the coil. Airflow is restricted. The unit has to work harder to cool the room, which increases its energy consumption and causes its components to wear out prematurely. A clogged coil can also freeze up in the middle of the season. The ice then blocks heat exchange, and the unit blows out lukewarm air. Moisture that builds up inside the unit creates an ideal environment for mold. This air, laden with allergens and odors, then circulates throughout your home and degrades indoor air quality. Regular maintenance reverses this downward spiral and protects both your comfort and your energy bill.
  • Efficiency: A clean coil allows the air conditioner to cool without wasting energy
  • Clean Air: Clean filters trap dust, mold, and allergens
  • Lifespan: Less wear and tear, so the device lasts longer
  • Cost savings: An air conditioner that “breathes” uses less energy to produce the same amount of cooling

How often should a wall-mounted air conditioner be serviced?

The most important thing is to clean the filters every 2 to 4 weeks during the operating season. In the spring, check the coil and the outdoor unit before the first heat wave. Once a year, have a technician perform a complete professional maintenance check. This schedule is sufficient for normal residential use and keeps the unit in good condition. Certain conditions cause these intervals to be shorter. Heavy use throughout the summer, the presence of pets, or construction dust cause the filters to become clogged more quickly. Spring in the Quebec City and Lévis area also brings its share of pollen, which quickly clogs the indoor unit. In these cases, cleaning every two weeks is still preferable. Some signs indicate that cleaning is needed sooner. Keep an eye out for them.
  1. A musty or damp smell when turned on
  2. The air feels less cold than usual
  3. An unusual noise coming from the indoor unit
  4. An Unexplained Increase in Your Electricity Bills

What a Professional Deep Cleaning Includes

Professional maintenance and cleaning go far beyond simply wiping dust off the surface. Our technicians perform the maintenance recommended by the manufacturers on both the indoor and outdoor units. Here are the services included.
  • Thorough cleaning of the filters, coil, and fins
  • Inspection of the indoor unit and the outdoor condenser
  • Checking drainage and ventilation to prevent water leaks
  • Measuring Proper Operation and Operating Temperatures
  • Inspection of electrical components and refrigerant level
  • Straightening of warped fins and disinfection of the condensate pan
Our 8 service technicians cover the North Shore and the South Shore. In the event of a sudden breakdown, emergency service is available 7 days a week if you sign up for a maintenance contract. An annual maintenance contract takes the hassle out of it: the service visit is scheduled every year, your air conditioners and heat pumps remain covered, and their performance is maintained over time.

Professional maintenance or do-it-yourself cleaning

You handle the routine maintenance of your air conditioner; a refrigeration technician handles the more complex tasks. Basic filter cleaning and dusting the exterior can be done without specialized tools. Anything involving the refrigerant or opening the unit should be left to a professional. The rule is simple. Never open the unit yourself.
Task Do-It-Yourself Professional
Clean the filters with warm water and mild soap Yes Optional
Dust off the front of the wall-mounted unit Yes Not required
Thoroughly Clean the Coil No Yes
Check the refrigerant in the wall-mounted heat pump No Yes
Open the device for professional cleaning No Yes
A basic tip: Always let the filters air dry before putting them back in place—never use a hair dryer. Also, turn off the power before cleaning. Our team will take care of the rest.

Let Enviro Confort take care of cleaning your wall-mounted air conditioner and heat pump

Comfort, quality, and trust: these are the principles that guide every job performed by our air conditioning, heating, and heat pump teams in Quebec City and Lévis. Our 13 advisors and 10 installation teams are here to assist you, backed by more than 500 customer reviews. Schedule an appointment with an advisor or get a free, no-obligation quote for the maintenance of your wall-mounted air conditioner.

FAQ

It is not required by law, but it is strongly recommended by manufacturers. Regular maintenance helps maintain the appliance’s performance, reduces the risk of breakdowns, and, in some cases, ensures compliance with the warranty terms.

The cost varies depending on the type of unit, the number of units to be serviced, and the work required. To find out the price for your specific system, the easiest way is to request a personalized quote from a professional.

A poorly maintained appliance may lose efficiency, consume more electricity, produce unpleasant odors, or be more prone to breakdowns. Regular cleaning helps ensure reliable operation and greater comfort.

Spring is generally the best time to have your air conditioner professionally serviced before the first heat waves arrive. This ensures that your air conditioner is ready to operate efficiently as soon as the summer season begins.