When a simple cleaning becomes a complete technical intervention
One of our recent service calls in Town of Mount Royal perfectly illustrates the importance of rigorous maintenance of wall-mounted air conditioning systems. The client, the owner of a typical brick duplex in the area, contacted us after noticing that his North Cool air conditioner was circulating air, but without any real cooling. This is a common situation in the spring, when systems are restarted after several months of inactivity.
Initial diagnosis: lack of cooling related to maintenance
Upon opening the indoor unit cover, our technician noticed significant clogging of the filters and evaporator coil . These deposits of dust and pollen block air circulation and impair heat exchange, resulting in reduced energy efficiency and increased electricity consumption .
Another obvious sign: excessive condensation on the bottom of the hull, indicating a partially blocked drain . This type of problem, if left uncorrected, can cause water leaks inside the housing.
Repair and maintenance steps
Our intervention followed a complete restoration protocol, carried out according to AirGreen standards:
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Thorough cleaning of air filters with a biodegradable disinfectant product.
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Vacuuming and brushing the interior coil to clear the exchange fins.
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Checking the ventilation motor and greasing the bearings.
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Cleaning and purging the condensate drain , then spill test.
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Measurement of air inlet and outlet temperatures , confirming a difference of 11°C after intervention.
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Communication test with the outdoor unit to ensure correct compressor response.
Efficiency restored immediately
After restarting, the unit returned to full performance. The air supply was fresh, the static pressure was correct, and the power consumption was stable.
The customer, surprised by the amount of dust extracted from the unit, agreed to incorporate regular annual maintenance , a simple but crucial gesture to extend the life of the air conditioner.
The benefits of professional AirGreen maintenance
An AirGreen service isn't just a cleaning. It's a complete inspection aimed at:
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prevent costly breakdowns;
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maintain energy performance;
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remove contaminants from indoor air;
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and ensure quiet and stable operation of the system.
Our technicians, all certified and trained on several brands — including North Cool, Gree, Fujitsu, Midea, and Sharp — operate throughout Montreal , Laval , Longueuil , on the North Shore and the South Shore .
Conclusion: A summer-ready air conditioner
Thanks to a careful upgrade , this North Cool wall-mounted air conditioner from Ville Mont-Royal now works like new. Customer comfort has been fully restored, and indoor air quality has been significantly improved.
A simple reminder: annual preventive maintenance remains the best way to ensure the reliability and longevity of a residential HVAC system.