Maximizing the performance of your wall-mounted heat pump year-round is not something you leave to chance. At AirGreen, experts in HVAC in Montréal, Laval, Longueuil, the North Shore and the South Shore, we’ve developed a precise annual maintenance calendar based on our field experience and the recommendations of manufacturers like Fujitsu, Gree, Sharp, Tosot, or Lennox. Our goal: to ensure the longevity, energy efficiency, and optimal comfort of your system, season after season.
Why a structured annual maintenance schedule is essential
Regular maintenance of your wall-mounted heat pump is much more than a simple precaution—it’s a technical necessity to preserve its performance and prevent costly breakdowns. Here’s what we see every day with our clients on the field:
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Dust buildup on indoor and outdoor coils, reducing thermal exchange efficiency.
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Air filters getting clogged, resulting in higher energy consumption.
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Condensation and mold growth that can affect indoor air quality.
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Premature wear of mechanical parts due to lack of lubrication or undetected wear.
Thanks to our expertise, we’ve created a clear maintenance plan tailored to the Québec climate and local usage habits.
Spring: the deep clean before summer
Full system inspection
With the return of milder temperatures, April is the perfect time to launch the first maintenance phase. That’s when our team performs:
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A full visual inspection of both indoor and outdoor units.
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A check of the drain line to prevent leaks and overflows.
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A test of the remote control and programming system.
Deep cleaning
A thorough cleaning of the indoor fan, coils, and condensate tray is performed. This operation is crucial to ensure purified air throughout the summer season.
AirGreen uses biodegradable and non-corrosive products, specifically designed for HVAC systems, so they don’t damage internal components.
Summer: active monitoring during peak usage
Monthly filter checks
Between June and August, the system often runs continuously. We recommend that clients:
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Check and clean air filters every 30 days.
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Make sure the outdoor unit is free from obstructions (leaves, debris, vegetation).
Technical support in case of overheating
During heat waves in Laval or Longueuil, calls increase about machines shutting down or overheating. These cases are often due to lack of prior maintenance. Our technicians provide fast response service to avoid prolonged downtime.
Fall: prepping for heating season
Heating mode inspection
Starting in September, a full test of the heating mode is essential:
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Checking how quickly the unit reaches the set temperature.
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Analyzing energy consumption trends compared to previous readings (if available).
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Verifying the temperature probe and sensors.
Cleaning the outdoor coil
Falling leaves and dirt can build up on the outdoor unit. Our technicians provide:
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A low-pressure cleaning to protect the condenser fins.
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A check on water drainage, crucial to prevent icing during winter.
Winter: heightened vigilance and thermal monitoring
Monitoring cold-weather performance
In December and January, it’s critical to:
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Monitor the defrost cycles of the heat pump, especially with high-efficiency models like the Gree Sapphire or Fujitsu KZAH.
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Ensure the outdoor fan spins freely, with no ice or snow buildup.
Preventive service calls on request
We offer a proactive winter maintenance service, especially for wall-mounted heat pumps located on the North Shore or more exposed areas like Sainte-Julie or Oka. This approach prevents prolonged downtime during deep freezes.
Real-life example: annual maintenance of a Sharp ZU1 heat pump in Pierrefonds
One of our clients in Pierrefonds, Montréal, who owns a 24,000 BTU Sharp ZU1 wall-mounted heat pump, entrusted us with full annual maintenance. Thanks to our spring intervention:
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The system operated at peak efficiency during the July heatwave.
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In the fall, the heating mode started instantly, with a 15% drop in consumption compared to the previous year.
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No technical breakdown occurred throughout winter, even during temperatures reaching -23°C.
This kind of measurable result proves the effectiveness of structured, professional maintenance.
Practical tips between professional maintenance visits
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Keep 1 meter of clearance around the outdoor unit.
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Never fully cover the outdoor unit, even in winter.
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Never use household products to clean filters or coils.
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Contact a certified professional if you hear unusual noises or notice performance issues.
Why choose AirGreen for your wall-mounted heat pump maintenance
At AirGreen, we don’t just inspect—we optimize, protect, and extend the life of your equipment. Every visit is documented, and every recommendation is personalized to your heat pump model and usage.
Our certified technicians operate across the Greater Montréal area, providing fast, reliable service and complete transparency on recommendations and pricing.
What you gain with a proper maintenance schedule:
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Lower electricity bills (up to 25% energy savings).
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Constant thermal comfort, year-round.
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Fewer risks of emergency breakdowns.
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Extended lifespan of your wall-mounted heat pump.
Conclusion
A structured annual maintenance calendar, tailored to your wall-mounted heat pump model and your location, is your best guarantee for long-term performance and peace of mind. Whether you're in Longueuil, Laval, Montréal, the North Shore or the South Shore, AirGreen is your trusted partner for HVAC maintenance.
Contact us today to set up a personalized annual maintenance plan for your system. With AirGreen, you’re investing in reliability, expertise, and lasting comfort.