A typical early summer service call in Montreal
At AirGreen , we often receive urgent calls as soon as the warm weather hits Montreal. That day, our team was dispatched to the Côte-des-Neiges–Notre-Dame-de-Grâce neighborhood, where a customer reported a Galanz wall-mounted air conditioner that was no longer effectively cooling his ground-floor apartment in a typical red brick building.
The installation, a 12,000 BTU Galanz wall-mounted system , served an open living room/kitchen area. After a quick phone interview, our technician visited the site for a complete diagnosis of the HVAC system .
Diagnosis: loss of performance and lack of cold
The customer noticed that his outdoor unit was running, but the air blown inside remained lukewarm.
Our inspection revealed:
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Low R-410A refrigerant pressure , indicating a leak in the refrigeration circuit .
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Slight oxidation on the fluid hose fittings, probably caused by exposure to sunlight and moisture.
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A clogging of the indoor coil , which reduced the heat exchange and the performance of the air conditioner.
These combined elements explained the low cooling capacity and the excess electricity consumption noted by the customer.
Intervention: complete repair and refurbishment of the performance
Our certified technicians proceeded in several precise steps:
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Leak location using an electronic detector and a pressurized nitrogen test.
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Repair of the defective connection , followed by silver soldering to ensure a lasting seal.
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Complete cleaning of the interior coil and filter using a biodegradable product.
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Replacing the refrigerant with the exact amount recommended by Galanz, after a 500 micron vacuum .
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Checking operating pressures and measuring the blowing temperature difference.
Once restarted, the blown air temperature dropped to 12°C , proof of a perfectly rebalanced system.
Result: restored comfort and optimized performance
The customer immediately noticed the difference:
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Even and rapid freshness in all rooms.
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Reduced energy consumption .
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Less noise pollution , the compressor now operates without overheating.
We also advised the customer to have annual preventive maintenance to extend the life of the air conditioner and avoid micro-leaks.
AirGreen Tips for Wall-Mounted Air Conditioner Owners in Montreal
To avoid breakdowns during a heatwave:
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Clean your air filters every month during the summer.
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Check for ice or standing water around the outdoor compressor.
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Avoid obstructing ventilation grilles.
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Entrust refrigerant diagnosis and recharge to certified technicians.
At AirGreen , we serve all of Montreal, Laval, Longueuil, the North Shore and the South Shore for the repair of wall-mounted air conditioners , whether it is a Galanz, Fujitsu, Gree, Midea, Sharp, or Daikin unit.
Why trust AirGreen?
Because every intervention is treated as a unique case . We systematically document each repair, test performance after intervention and clearly explain to our customers the preventive measures to be adopted. Our goal is simple: to guarantee the long-term reliability and comfort of your HVAC system .
AirGreen – Experts in residential and commercial HVAC system repair in Montreal
From diagnosis to restored performance, we provide fast, lasting and guaranteed interventions.