A typical AirGreen intervention in Laval: efficiency, cleanliness and precision
At AirGreen , we know that wall-mounted air conditioner maintenance or repair isn't just about "putting the cold back on." It's a precision job that requires a thorough diagnosis, a deep cleaning, and a complete overhaul of the unit—to ensure the customer's comfort is restored for the long term. Recently, our team visited Sainte-Rose (Laval) for a thorough repair and cleaning service on a Gree wall-mounted air conditioner .
The context: a device that leaked and cooled poorly
The customer contacted us after noticing two concerning issues:
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water was flowing down the wall,
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and the flow of cold air was significantly reduced.
Upon arriving on site, our technicians noted a lack of internal maintenance : the indoor fan impeller was dirty, the evaporator fins had a thin layer of dust, and the condensate drain pan was partially clogged. These symptoms explained both the poor cooling performance and the water leaks observed by the customer.
The diagnosis: between clogging and blocked drain
A comprehensive check revealed that:
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The condensate drain was almost completely blocked.
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The fan motor was struggling to spin at full speed due to dirt buildup.
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The internal temperature sensor was sending false readings, causing erratic on/off cycles.
To prevent water infiltration or damage to the wall, our team installed a professional wash cloth (pictured above)—an essential accessory for cleaning the wall unit without splashing or damaging the interior environment.
AirGreen intervention: complete cleaning and restoration of air flow
Here are the main steps carried out on site:
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Protection of the work area : installation of a sealed maintenance tarpaulin with drainage pipe.
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Partial disassembly of the front panel and inspection of the electronic cards.
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Steam cleaning and biodegradable products for the evaporator and turbine.
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Clear and flush the condensate drain to the outside.
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Checking the temperature sensor and recalibrating the control board.
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Final performance test : Airflow returned to normal and noise level decreased.
In less than two hours, the device was restored to working order, and the room temperature returned to a comfortable level.
Essential HVAC maintenance for the durability of the unit
This type of intervention is an important reminder: a wall-mounted air conditioner , especially in a residential environment, must be serviced at least once a year . Without this:
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dust reduces energy efficiency,
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condensation water accumulates and eventually leaks,
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the life of the engine and electronic components decreases.
At AirGreen, we recommend all our customers schedule a preventative maintenance visit in the spring , before the hot weather. This helps maintain quiet operation, better air quality, and optimized energy consumption.
Why choose AirGreen for your HVAC repairs in Laval and Greater Montreal
Our teams cover the entire Greater Montreal area, including Laval, Longueuil, the North Shore and the South Shore . We respond quickly to all types of devices:
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Wall-mounted air conditioners and wall-mounted heat pumps ,
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MultiZone and central systems ,
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PTAC, ceiling cassettes, air exchangers and electric furnaces .
Every AirGreen technician is trained to accurately diagnose the source of the problem, perform a lasting repair , and thoroughly clean every internal component .
Result: comfort restored and customer satisfied
At the end of our intervention in Sainte-Rose, the customer found a quiet, efficient, and leak-free air conditioner. The airflow was strong again, and the temperature in the room quickly stabilized.
This type of result is AirGreen's signature: clean, durable and guaranteed HVAC repairs , carried out by passionate professionals who are fully familiar with the specific features of brands like Gree, Fujitsu, Midea, Sharp, Hitachi or Goodman .