When precision and expertise meet: a successful AirGreen service call
At AirGreen , we are regularly called to diagnose and repair Fujitsu air conditioning systems in Montreal. This service call, carried out in the Côte-des-Neiges district, perfectly illustrates our rigorous approach and attention to detail during each HVAC intervention.
Background to the call
A customer contacted us after noticing that their Fujitsu wall-mounted air conditioner was no longer cooling their space effectively. Despite seemingly normal operation—lights lit and airflow present—the room temperature remained high, even in "cool" mode.
Accurate diagnosis with infrared thermometer
Our technicians used a professional infrared thermometer , an essential tool to check the actual temperature of the air blown by the indoor unit. The measurement revealed an outlet temperature of 14.9 °C , which is well above the normal performance expected of a Fujitsu air conditioner in good condition (around 8–10 °C depending on ambient conditions).
This data immediately pointed us towards a problem with the refrigeration cycle's efficiency . Several potential causes could explain this difference:
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Insufficient refrigerant level (possible micro-leak);
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Dirty evaporator coil reducing heat exchange;
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Clogged filter restricting airflow;
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Or even a compressor with partial loss of performance .
Thorough technical inspection
After removing the cover from the wall unit, our technicians noticed:
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A slight accumulation of dust on the evaporator;
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A slightly clogged filter ;
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No abnormal noise coming from the compressor.
We then carried out a check of the refrigerant gas pressure on the outside. The measurements confirmed a slight lack of refrigerant , symptomatic of a small leak on the suction line.
Intervention carried out
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Complete cleaning of filters and evaporator with a certified biodegradable solution.
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Nitrogen leak test to identify the leak.
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Repair of the flare connection on the outside, followed by a complete vacuum .
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R410A refrigerant recharge according to Fujitsu specifications.
After restarting, the outlet temperature dropped to 7.6°C , proving the system's full efficiency had been restored.
Results and customer satisfaction
The customer immediately noticed the difference: the air was significantly fresher and the room temperature dropped by 4°C in less than 15 minutes . In addition, the system's energy consumption was optimized thanks to a restored refrigeration cycle.
Why choose AirGreen for your HVAC repairs in Montreal
Our interventions are based on:
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In- depth expertise on all brands of wall-mounted air conditioners, including Fujitsu, Midea, Gree, Sharp and Lennox ;
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Advanced diagnostic tools , such as infrared thermometers, digital pressure gauges and electronic leak detectors;
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Fast and transparent service , covering Montreal, Laval, the North Shore and the South Shore ;
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And above all, a team of certified and passionate technicians , always ready to restore your HVAC system to optimal performance.
Care instructions
To prevent such a situation from happening again, we recommend:
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Cleaning the filters every 4 to 6 weeks ;
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Annual preventive maintenance before the summer season;
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And checking the refrigerant level by an authorized professional.
By following these best practices, you will maximize the lifespan of your Fujitsu air conditioner while maintaining consistent comfort in your home.
AirGreen: Your Trusted HVAC Partner
At AirGreen, every service call is handled with the same rigor, whether it's a minor breakdown or a complex repair. Our goal: to ensure the lasting comfort of our customers , while guaranteeing the optimal performance of each system installed or repaired.