A typical service call in the AirGreen daily life
In the residential neighborhood of Sainte-Dorothée in Laval , a customer contacted us after noticing that her Gree wall-mounted heat pump was no longer blowing hot air, despite an operating indicator light being on. During this transition period between seasons, it is essential for residents to be able to count on an efficient and reliable HVAC system, especially when temperatures fluctuate between cool mornings and warm afternoons.
At AirGreen , we're used to dealing with this type of breakdown quickly. Upon our arrival, our technician conducted a complete inspection of the outdoor system —the wall-mounted condenser installed on a red brick wall typical of the Laval suburbs.
Accurate diagnosis: communication failure and ice accumulation
The first observation was a slight formation of frost at the base of the condenser, indicating poor refrigerant circulation . Using our measuring instruments, we confirmed a pressure imbalance between the suction and discharge lines. Upon opening the control box cover, our technician detected a slightly oxidized communications board —a common occurrence after several cycles of humidity and heat.
We also noted that the condensate drain was partially clogged, which contributed to ice formation during defrost cycles.
Repair and recommissioning
Our technicians performed the following steps:
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Complete cleaning of the outdoor coil and condensate drain , in order to restore optimal airflow.
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Replacement of the electronic communication card with an original Gree part, guaranteeing compatibility and durability of the system.
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Checking the tightness of the copper fittings and adding a small recharge of R-32 refrigerant , in compliance with current environmental standards.
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Complete testing in heating and cooling mode to confirm performance and pressure stability.
After these interventions, the heat pump resumed normal operation, with stable and quiet performance . The customer immediately noticed the difference: the hot air circulated efficiently and the interior temperature stabilized within a few minutes.
An aesthetic and durable finish
We also took advantage of the intervention to improve the aesthetic management of the refrigeration duct , by installing a heat-resistant black chute perfectly integrated into the brick wall. This type of detail, although aesthetic, also plays a functional role by protecting the refrigeration lines against the extreme climatic variations typical of the Quebec climate.
Maintenance tips to extend the lifespan
At AirGreen, we recommend that our customers have their wall-mounted heat pump inspected at least once a year . A few simple steps can prevent most breakdowns:
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Clean the internal filters regularly.
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Ensure the outdoor unit remains clear (no obstructions from leaves, snow or debris).
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Listen for any abnormal vibrating or clicking noises .
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Schedule professional maintenance before winter to optimize defrosting.
These preventive measures not only reduce the risk of breakdowns, but also guarantee optimal energy consumption , especially for Gree models known for their high energy efficiency at low temperatures.
AirGreen: your HVAC partner in Laval and Greater Montreal
Every repair performed by AirGreen is accompanied by attention to detail and impeccable customer service. Our team of certified technicians covers Laval, Montreal, Longueuil, the North Shore and the South Shore , always ready to respond quickly to any HVAC service call .
Whether it's an electrical problem, a refrigerant leak, or a compressor failure , we put our expertise and experience to work for your comfort — with genuine parts and guaranteed repairs .
In summary , this intervention in Sainte-Dorothée perfectly illustrates AirGreen's philosophy: combining technical rigor, speed of execution and aesthetic care . Result: a refurbished Gree heat pump, a satisfied customer, and a house ready to face the coming months with optimal comfort.