Protect your summer comfort with rigorous annual maintenance for your wall-mounted air conditioner
In Montréal, where summers are increasingly hot and humid, having an efficient wall-mounted air conditioner has become an absolute necessity. Yet far too often, homeowners neglect a crucial step in ensuring the longevity and efficiency of their system: professional annual maintenance. At AirGreen, we regularly visit homes where simple maintenance practices could have prevented costly breakdowns or drops in performance. This article offers a detailed and practical guide on proper maintenance, common mistakes to avoid, and the long-term benefits of keeping your system well-maintained.
Why annual maintenance for your residential wall-mounted air conditioner is essential in Montréal
The Montréal climate is demanding on HVAC systems. Long periods of heat, combined with frequent use, can lead to dust, mold, and debris buildup inside wall units. An annual maintenance visit by professionals, like our team at AirGreen, not only preserves your system’s energy efficiency but also extends its lifespan by several years.
The consequences of neglected maintenance
Here’s what we frequently encounter during service calls:
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Clogged filters: Reduce air quality and force the unit to work harder, increasing energy consumption.
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Blocked heat exchanger: Reduces cooling efficiency, lengthens cycles, and wears components prematurely.
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Poor condensate drainage: Can cause leaks, corrosion, and even wall damage.
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Mold buildup: Affects occupants’ health and reduces indoor air quality.
Key steps in a successful annual maintenance visit
At AirGreen, our technicians follow a precise process during every maintenance call. Here are the key steps of our service:
Complete inspection of the wall unit
We check all visible and hidden components of the indoor unit:
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Filter condition
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Coil cleanliness
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Drainage system
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Fan motor
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Remote control operation
Deep cleaning
Our specialists use certified products to:
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Clean the coils without damaging them
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Disinfect the filters and water collection tray
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Eliminate organic buildup that causes unpleasant odors
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Clean the fan blades, which are often overlooked
Inspection of the outdoor unit
The outdoor unit (compressor) is just as important. We perform:
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Debris removal around the unit, including leaves, spider webs, etc.
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Refrigerant pressure check (if necessary)
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Complete electrical inspection to detect potential issues
Final performance test
Once cleaning is complete, we restart the system and check:
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Consistent temperature output
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Airflow
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Noise levels
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System tightness
Case study: maintenance of a Gree wall-mounted air conditioner in Outremont
During a recent visit to Outremont, our team carried out an annual maintenance on a Gree Lomo 18,000 BTU wall-mounted air conditioner installed three years prior. The client reported reduced efficiency and unpleasant odors. The result: the coils were covered in dust and mold was visible in the condensate tray. After a thorough cleaning and disinfection, the unit regained its original performance, and the odors disappeared. The client also noticed a significant drop in electricity consumption the following month.
Recommended frequency: once a year, ideally in spring
The ideal time to schedule maintenance for your wall-mounted air conditioner is in the spring, before the first major heatwaves. This ensures optimal performance throughout the summer and avoids long wait times during peak season.
Why choose AirGreen for your HVAC maintenance in Montréal
Proven expertise across the greater Montréal area
At AirGreen, we perform wall-mounted air conditioner maintenance every week in Montréal, Laval, Longueuil, the North Shore, and the South Shore. Our team is trained on the specifics of all major brands: Fujitsu, Gree, Tosot, Sharp, LG, Midea, Daikin, and more.
Unmatched value for money
Our packages include a full inspection, deep cleaning, final testing, and personalized recommendations. No surprises—everything is clearly outlined from the start.
Personalized advice for your future needs
After every maintenance visit, we provide a technical report and tailored advice for your home, including suggestions to improve comfort or plan an upgrade in the medium term.
What you can do between professional visits
We encourage all our clients to adopt good habits between professional maintenance visits:
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Clean the filters once a month (with a vacuum or lukewarm water)
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Keep the area around the outdoor unit free of vegetation
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Check for any unusual odors or noises
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Avoid running the unit with windows open
Maintenance and grants: what you need to know
While grants like Hydro-Québec’s LogisVert mostly apply to the installation of new heat pumps, regular annual maintenance is often required to maintain the manufacturer’s warranty and remain eligible for certain energy efficiency program extensions.
Trust AirGreen to extend the life of your wall-mounted air conditioner
Annual maintenance isn’t an expense—it’s an investment in longevity, comfort, and energy savings. Don’t let dust, moisture, and wear compromise your summer comfort. With AirGreen, you get reliable, local service from seasoned professionals operating throughout Montréal, Laval, Longueuil, the North Shore, and the South Shore.
Contact us today to schedule your annual maintenance. Your comfort should never be put on pause.