A typical service call in the heat of Laval
On a hot and humid day in Sainte-Dorothée , our AirGreen technicians were called to work on a Gree wall-mounted air conditioner that was no longer cooling properly. The customer, visibly concerned about the low flow of cold air despite recent maintenance, suspected a refrigerant problem. A common situation in North Shore residences, where HVAC systems are often called upon as soon as the first warm days of spring arrive.
Accurate diagnosis using an infrared thermometer
Upon our arrival, our technician began with a complete analysis of the unit's thermal performance . Using an infrared thermometer , the air outlet temperature was measured at 11.5°C , well below the expected value for a unit in good condition, which confirmed a pressure imbalance in the refrigeration circuit. This first visual and digital test is crucial to quickly identify whether the cause of the problem is the compressor, the expansion valve, or a leak.
Thorough inspection and diagnosis
After removing the front panel and checking the slightly clogged air filters , we noticed a buildup of dust on the evaporator. This dirt was significantly reducing the airflow and overall performance of the unit.
Once the cleaning was complete, the technician continued by checking the R-32 refrigerant level , typical of recent Gree models. A slight loss of pressure in the circuit was detected, indicating a micro-leak at a copper connection.
System repair and recharge
We repaired the connection using silver solder , ensuring a long-lasting seal. Once the leak was repaired, the system was evacuated to remove any moisture before recharging with R-32 refrigerant according to the manufacturer's specifications.
After restarting, the blowing temperature dropped to 6.5°C , a significant improvement in performance. The customer immediately noticed the difference: the air became fresh and constant again, restoring comfort to his living room.
Preventive maintenance: the secret to long-lasting performance
Our technicians took advantage of this intervention to remind the customer of some essential good maintenance practices :
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Clean air filters every two months during periods of heavy use.
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Avoid blockages around the outdoor unit, especially from leaves or debris.
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Schedule an annual inspection with AirGreen to check refrigerant pressure and electrical components for proper condition.
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Watch for warning signs : decreased power, unusual noises, or excessive condensation.
Recognized AirGreen expertise on the North Shore
This intervention in Sainte-Dorothée perfectly illustrates our expertise in residential HVAC system repair . Our teams operate daily across Laval, Montreal, Longueuil , as well as on the North Shore and the South Shore , offering fast, precise and transparent services.
At AirGreen , every service call is treated with the same rigor:
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Structured and documented diagnosis ,
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Sustainable repair ,
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Energy optimization ,
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Customer satisfaction guaranteed .
Our clients appreciate our professional approach and the clarity of our interventions: no surprises, only concrete results.
Final result
After the repair, the customer's Gree wall-mounted air conditioner was operating at full capacity again. The room temperature stabilized at 22°C in less than 20 minutes , with a significantly reduced humidity level .
A perfect example of the synergy between technical expertise and rigorous maintenance , values that have made AirGreen's reputation in the greater Montreal area.