A service call under the Montreal sun
It was a beautiful summer morning in Verdun , a vibrant riverside neighborhood where red brick balconies are a common sight. That day, our AirGreen team received a call from a concerned customer: their Midea wall-mounted air conditioner was no longer cooling their apartment properly, leaving the air lukewarm despite a running compressor.
The appointment was quickly set - our goal is always to ensure optimal thermal comfort , especially during heat peaks in the Montreal region.
Diagnosis of Midea wall-mounted air conditioner
Upon our arrival, we found a wall-mounted Midea condenser unit securely attached to a brick wall beneath a metal balcony structure. This configuration is typical of homes in southwest Montreal: limited space, a compact installation, and sometimes hampered ventilation.
We immediately carried out a complete diagnosis of the HVAC system :
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Air temperature not cold enough at the outlet of the indoor unit.
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Abnormal pressure on the refrigerant line.
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Dust accumulation on the outdoor coil.
After verification, the main cause was identified: severe fouling of the external heat exchanger combined with a partial lack of R-32 refrigerant , probably due to a micro-leak at the flare connection.
AirGreen intervention: precision and efficiency
Our certified technician undertook a three-step procedure :
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Complete cleaning of the condenser with a biodegradable product to restore heat exchange and improve air flow.
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Nitrogen leak test to locate the leak on the fitting. The flare was then re-done and tightened to Midea standards.
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Recharging the system with the precise amount of R-32 refrigerant specified by the manufacturer, followed by a complete performance test .
The whole thing took place in less than two hours, demonstrating once again AirGreen's speed and rigor on the ground.
Result: restored comfort and optimal performance
As soon as the intervention was completed, the wall-mounted air conditioner started working again. The indoor temperature dropped from 28°C to 22°C in less than 20 minutes , proof that the system was returning to its original performance. The relieved customer particularly appreciated our clear explanations and the transparency of our approach.
We also took the time to give him some preventative maintenance tips :
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Clean the internal filters every month.
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Check that there is sufficient clearance around the outdoor condenser.
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Schedule an annual inspection to prevent premature wear of components.
AirGreen Expertise: the benchmark in HVAC maintenance in Montreal
At AirGreen , we understand the unique challenges of Quebec's climate : humid heat in the summer, freezing cold in the winter. That's why our teams work on all makes and models of wall-mounted air conditioners and heat pumps , whether Midea , Fujitsu , Gree , Sharp , Goodman , or Lennox .
Each intervention is carried out with:
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Calibrated tools and original parts .
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Technicians trained to manufacturer standards.
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An environmentally friendly approach to residential facilities.
A strong presence on the island and its surroundings
Whether you are in Montreal , Laval , Longueuil , on the North Shore or the South Shore , AirGreen remains your trusted partner for:
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Wall-mounted air conditioner repair
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Preventive HVAC Maintenance
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Replacement and installation of heat pumps
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Energy optimization with grant programs available in Quebec
Thanks to our local experience, we operate in neighborhoods as diverse as Rosemont , Ahuntsic , Saint-Laurent , Brossard and Blainville , adapting our solutions to the architectural realities of each building.
In conclusion: performance in the service of comfort
This Midea wall-mounted air conditioner repair in Verdun perfectly illustrates our philosophy: combining technical expertise , human service , and sustainable efficiency . At AirGreen, every service call is an opportunity to demonstrate our commitment to Montreal residential comfort —a climate that is both controlled and energy-efficient.