A typical service call in the middle of summer
During a hot summer day in Boisbriand , a customer contacted us about a performance issue with their LG wall-mounted air conditioner . The outdoor unit, installed on a side wall of the house, was no longer producing enough cold air inside. At AirGreen , we know that a loss of efficiency from an air conditioning unit during a heatwave can quickly compromise the comfort of a home.
Initial diagnosis: an overheating air conditioner
Upon arrival, our technician quickly noticed that the LG wall-mounted condenser was partially obstructed by a conifer , reducing the airflow necessary for the system to function properly. The outdoor unit was installed at a suitable height, but too close to the vegetation , which caused:
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A buildup of debris in the condenser fins.
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A high discharge temperature , limiting the cooling capacity.
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Increased risk of compressor overload .
After a complete electrical and refrigeration inspection, our technician also noted a slight leak on the suction line connection , probably caused by continuous vibration of the unit.
Steps of repair
To restore optimal functioning of the system, our team proceeded in a structured manner:
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Complete condenser cleaning : use a biodegradable cleaner to clear the fins and restore airflow.
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Clear surrounding vegetation to ensure a minimum space of 30 cm around the unit.
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Refrigerant leak repair : tightening the flare connection, nitrogen leak test and recharging with R-410A refrigerant gas according to LG manufacturer's specifications.
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Electrical check : Check the voltage and amperage of the compressor to ensure that no overconsumption was present.
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Performance test : air inlet and outlet temperature measurement to validate system performance.
Results: restored comfort and improved performance
After restarting, the LG air conditioner returned to smooth operation, with a blowing temperature of 8°C and stable pressure , in line with the manufacturer's standards. The customer immediately felt an improvement in indoor freshness.
We took care to explain to the owner the importance of regular maintenance and maintaining sufficient clearance around the outdoor unit —an often overlooked point, but essential to the longevity of any HVAC system.
Maintenance tips to extend the life of an LG air conditioner
Our technicians recommend that all LG wall-mounted air conditioner owners follow these few practices:
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Clean the interior filters every two months during the air conditioning season.
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Visually inspect the outdoor condenser in spring and fall.
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Schedule annual preventative maintenance with a certified technician.
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Maintain a clearance of at least 30 cm around the unit to avoid overheating.
AirGreen expertise at your service on the North Shore
At AirGreen , we operate daily in Montreal, Laval, Longueuil, the North Shore and the South Shore for repairs, installations and maintenance of HVAC systems of all brands, including LG, Gree, Fujitsu, Midea, Sharp and Daikin . Our mission is simple: to guarantee the performance, energy efficiency and comfort of our customers .
Every service call, like the one in Boisbriand, reminds us of the importance of technical rigor and prevention in the field of heating and air conditioning.