A quick service call for comfort restored in Montreal
At AirGreen , we were recently called to work in an apartment in the Côte-des-Neiges–Notre-Dame-de-Grâce neighborhood of Montreal. The client contacted us after noticing that their Fujitsu wall-mounted air conditioner was no longer cooling the room properly, despite an external compressor that appeared to be operating normally. The indoor unit, installed high up near the ceiling, was diffusing lukewarm air even in maximum cooling mode.
Diagnosis: Loss of efficiency and obstruction of airflow
Upon our arrival, our technician carried out the basic checks:
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R-32 refrigerant gas pressure : slightly lower than the recommended standard.
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Air filters : very dirty, severely limiting air circulation.
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Evaporator : traces of dust and beginning of icing, a direct consequence of lack of maintenance.
After cleaning the filters and inspecting the coil, we confirmed a small leak at a flare fitting at the outlet of the wall-mounted unit. This type of problem is common when the original installation has experienced repeated vibration or slight movement of the copper pipe.
Repair carried out
Our technicians have:
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Tightened and resealed the connection using a calibrated tightening torque.
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Performed a nitrogen leak test to ensure pressure resistance.
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Complete vacuum extraction of the refrigeration circuit.
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Recharged the system with the exact amount of R-32 , according to Fujitsu specifications.
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Cleaned the indoor coils with biodegradable foam to restore heat exchange.
Once the unit was put back into service, it immediately returned to a blowing temperature of 10°C at the air outlet , a sign of optimal performance .
Result: fresh air and a reassured customer
In less than two hours, the Fujitsu wall-mounted air conditioner was back to full performance. The customer, who had feared a major compressor failure, was relieved to learn that it was simply a minor leak combined with a lack of maintenance.
We recommended that he have his wall unit cleaned once a year to avoid:
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Loss of energy efficiency;
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Mold growth on the evaporator;
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The risks of leaks or accumulation of condensate.
Why choose AirGreen for your HVAC repairs in Montreal
Our certified technicians travel throughout Montreal, Laval, Longueuil, the North Shore and the South Shore to diagnose and repair your HVAC systems with precision and professionalism. Whether you have a Gree wall-mounted heat pump , a Sharp air conditioner , or a Fujitsu MultiZone system , we guarantee:
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An honest and transparent diagnosis ,
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Original parts ,
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A certified workforce ,
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And fast service , often the same day.
Maintenance tips for wall-mounted air conditioners
To extend the life of your device and maintain consistent comfort, we recommend:
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Clean the filters every two months during the hot season;
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Check the flow of the condensate drain to avoid water leaks;
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Schedule a complete annual maintenance with an AirGreen technician;
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Keep curtains and furniture away from the airflow for optimal distribution.
With regular maintenance, your wall-mounted air conditioner can operate efficiently for over 12 years while reducing your electricity costs.
Recognized expertise across Greater Montreal
From Côte-des-Neiges to Outremont , via Laval , Sainte-Dorothée and the South Shore , AirGreen works every week on wall-mounted, central and multi-zone installations. Our reputation is based on lasting repairs , accurate diagnostics and a constant commitment to the satisfaction of our residential and commercial customers .
By choosing AirGreen, you benefit not only from fast service, but also from expert advice to optimize the energy performance of your HVAC equipment.