A quick and effective intervention for restored comfort
At AirGreen , we know how essential a reliable wall-mounted air conditioner is to the comfort of our customers in Laval and throughout the North Shore . This service call in Sainte-Dorothée concerned a Gree wall-mounted air conditioner installed in a bright living room with a high ceiling. The customer had noticed a decline in performance over the past few days—the unit was no longer cooling as well as before, despite a properly adjusted thermostat and recent maintenance.
On-site diagnosis: when performance drops for no apparent reason
Upon our arrival, our certified technician carried out a complete check:
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Blowing temperature measured at the outlet of the indoor unit;
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Operating pressures on the outdoor unit;
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Inspection of the filter, exchanger and temperature sensor.
The diagnosis revealed a partial lack of refrigerant due to a microleak on the flare connection between the indoor unit and the refrigeration line. This type of problem is common when connections are subject to slight seasonal pressure fluctuations, particularly in well-insulated homes in Laval.
Repair: Detection, tightening and system upgrade
To correct the problem, our technician:
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Locate the leak using an electronic detector;
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Tighten the flare fitting after remaking the junction;
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Pulled a full vacuum on the line to remove moisture;
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Recharged the system with R32 refrigerant according to Gree manufacturer's specifications;
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Tested operation at different fan speeds.
After these steps, the Gree wall-mounted air conditioner regained its full cooling capacity, with a temperature difference of 11°C between the ambient air and the air outlet—optimal performance.
Result: immediate comfort and peace of mind
The customer immediately noticed the difference:
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The air in the room has become fresh and stable again;
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No vibration or abnormal noise;
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Stable electricity consumption measured by the wall thermostat.
We also took advantage of the visit to reiterate the importance of annual maintenance : cleaning filters, inspecting fittings, checking refrigeration pressure, and monitoring condensate. These simple steps help prevent micro-leaks and extend the system's lifespan.
Why trust AirGreen for your HVAC repairs in Laval
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RBQ and CCQ certified technicians , trained on Gree, Fujitsu, Midea, Sharp systems and more;
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Fast home service in Laval, Longueuil, Montreal, North Shore and South Shore;
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Precise and transparent diagnosis : no repair without customer validation;
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Warranty on replaced parts and labor .
At AirGreen, every HVAC service call is handled with care and respect. Our priority: restoring your comfort as quickly as possible while ensuring the long-term reliability of your system.