A customer looking for freshness in the middle of summer in Brossard
During this particularly hot month of June, a customer living in Brossard , on the South Shore of Montreal, contacted us about a performance problem with a Midea wall-mounted air conditioner . The indoor unit was blowing lukewarm air despite the air conditioning mode being activated at full capacity.
At AirGreen , we know how essential a high-performance wall-mounted air conditioner is to the comfort of Quebec homes during heatwaves. We dispatched a technician the same day to perform a complete system diagnosis .
Diagnosis: Dust accumulation and airflow obstruction
Upon opening the cover of the Midea wall unit, our technician observed several revealing elements:
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The air filters were saturated with fine dust and pollen , significantly reducing airflow.
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The evaporator coil had a thin layer of dirt, preventing proper heat exchange.
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The tangential fan appeared to be spinning slower than expected, a sign of motor imbalance or overload .
We also performed a refrigerant level check at the outdoor compressor: the pressures were slightly lower than the reference values, indicating a possible microleak or a slight undercharge of the system .
Intervention: complete cleaning and refrigerant replenishment
The intervention was carried out in several stages, each aimed at restoring the original performance of the system :
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Complete disassembly of the front panel and extraction of the air filters, cleaned with warm water and dried carefully.
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Deep cleaning of the evaporator coil with a Midea-approved, biodegradable, no-rinse foaming product.
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Dusting the tangential fan , a delicate operation requiring partial disassembly of the turbine.
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Checking the wiring and electrical connections to ensure a constant and secure power supply.
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Recharge with R-32 refrigerant to restore the manufacturer's recommended pressure ratings.
Once everything was reassembled, the Midea air conditioner resumed its optimal operation: powerful airflow, fast and quiet cooling , and energy consumption in line with expectations.
Result: restored comfort and lasting performance
The customer immediately noticed a marked improvement in ambient comfort . In less than 15 minutes, the indoor temperature dropped from 27°C to 22°C, demonstrating a return to full system capacity.
We recommended a six-monthly preventive maintenance , including:
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Regular cleaning of air filters (every two months).
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An annual professional inspection before the hot season.
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Refrigerant level control to prevent efficiency losses.
Proper maintenance extends the life of your wall-mounted air conditioner and helps prevent costly breakdowns.
AirGreen expertise serving South Shore residences
At AirGreen , we work daily on wall-mounted air conditioners and heat pumps from Midea, Gree, Fujitsu, Sharp, Goodman and several other brands in the greater Montreal area, Laval, Longueuil, the North Shore and the South Shore .
Each repair is carried out with the same level of requirement:
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Accurate diagnosis , based on advanced measuring tools.
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Careful intervention , in accordance with the manufacturer's specifications.
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Long-lasting result , guaranteeing optimal comfort and maximum energy efficiency.
Our reputation is based on our ability to combine technical expertise and professional rigor , while offering courteous and rapid service, adapted to the specific needs of each residence.
To remember
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Initial problem: lack of cooling due to clogged filters and undercharging of refrigerant.
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Solution: Complete cleaning, engine check and refill with R-32.
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Result: restored air conditioning, optimal comfort and improved energy efficiency.
In Brossard, as everywhere else, AirGreen remains your reference for repair and maintenance of Midea wall-mounted air conditioners . Thanks to our certified technicians and our attention to detail, you can enjoy lasting comfort, summer and winter.