Maintenance—The Overlooked Key to Long-Lasting Air Conditioning Performance
Most homeowners in Montréal, Laval, Longueuil, the North Shore, and the South Shore invest in a wall-mounted air conditioner or heat pump to improve comfort while reducing energy consumption. Yet many ignore that a lack of HVAC maintenance can lead to a 15% drop in efficiency each year. At AirGreen, our technicians see firsthand every day that well-maintained systems work better, last longer, and consume far less electricity.
What We See in the Field: High-Performance Systems... That Lose Steam Too Quickly
Our teams visit homes and businesses every week where new air conditioning systems seem to lose performance after only a few years. The causes are nearly always the same: lack of maintenance, dust buildup, clogged filters, or low refrigerant levels.
Case Study in Longueuil
A client had a Gree Charmo R32 wall-mounted air conditioner, 24,000 BTU, installed three years earlier. He complained of weaker cooling and a sudden spike in his electricity bill. After inspection by our technician, the diagnosis was clear:
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Severely clogged filters
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Indoor coils covered in dust
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R-32 refrigerant pressure below normal
Result: the unit was using more energy to produce less cool air. A complete maintenance service restored proper functionality.
Why Annual Maintenance Is Essential
Maintaining an HVAC system isn’t just a visual check. It’s a set of technical procedures performed by certified professionals.
What’s Included in AirGreen Maintenance:
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Thorough cleaning of filters, coils, and condensate trays
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Checking refrigerant levels (R-32, R-410A, R-454B depending on the model)
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Inspecting electrical connections
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Inspecting ducts and wall mounts
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Measuring overall system performance and making necessary adjustments
An annual maintenance visit helps:
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Maintain the system’s energy efficiency
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Prevent costly breakdowns
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Extend the lifespan of the equipment
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Preserve indoor air quality
A Neglected AC System Means Sacrificed Comfort
Losing 15% efficiency each year, a wall-mounted air conditioner or heat pump slowly becomes less effective—without the user even noticing. Comfort gradually fades: longer cycles, uneven temperatures, strange noises, poor humidity control…
Testimonial from a Client in Laval
"I thought my air conditioner was working fine, but I kept sweating in the living room at the end of the day. After AirGreen’s maintenance, the difference was instant. We got real comfort back without replacing the unit."
The Most Common Mistakes to Avoid
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Forgetting to clean the filters
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Result: higher energy use and reduced airflow
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Delaying maintenance too long
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Result: unexpected failures, premature compressor wear
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Ignoring warning signs
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Result: silent malfunctions, gradual performance loss
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Running the system non-stop without breaks
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Result: overheating and accelerated wear of components
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Maintenance Service Tailored to Montréal and Surrounding Areas
At AirGreen, we tailor our services to the region’s climate and the specific requirements of HVAC systems in Greater Montréal. Our technicians operate throughout Montréal, Laval, Longueuil, the North Shore, and the South Shore, using precise diagnostic tools and an expert eye for every technical detail.
Recent Interventions:
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Maintenance on a central Lennox heat pump with R-454B in Saint-Jérôme
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Full cleaning of a Fujitsu wall-mounted AC in Brossard
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Rebalancing refrigerant pressures on a Midea EVOX G3 unit in Montréal-Nord
In each case, clients reported an immediate boost in performance and a notable reduction in electricity use.
Preserve Your Grants with Regular Maintenance
Programs like Hydro-Québec’s LogisVert or other government subsidies often require systems to be properly maintained to remain eligible for grants. A documented lack of maintenance can result in reduced or revoked subsidies.
Conclusion: A Small Step, A Big Impact
An annual maintenance visit is a small investment for maximum performance. At AirGreen, we believe every air conditioner deserves regular care to perform at its best. Avoid nasty surprises, extend the life of your systems, and enjoy optimal comfort year-round.
Contact AirGreen today to schedule your HVAC system’s maintenance. Our teams respond quickly anywhere in Montréal, Laval, Longueuil, the North Shore, and the South Shore, with the same high standard of quality.