A telltale service call: weakened airflow and reduced performance
At AirGreen , we regularly receive calls from customers in Sainte-Rose (Laval) reporting a decline in the performance of their wall-mounted HVAC system . In this case, it was a Midea wall-mounted heat pump , a popular model for its reliability and energy efficiency. The customer had noticed for several weeks that the unit was almost no longer blowing cold air , despite a temperature set at 21 °C. A classic sign of a neglected maintenance problem or internal fouling.
Initial inspection: one indoor unit visibly clogged
Upon our arrival, a simple glance at the wall unit was enough to reveal the main cause:
The air filters were covered with dust and micro-debris , significantly reducing airflow.
Additionally, the evaporator coil (the heat exchanger behind the filters) was showing signs of accumulated dirt , which was impairing heat exchange.
Our certified technicians immediately performed a complete HVAC system assessment , including:
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Checking filters and evaporator;
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Measurement of air flow and inlet/outlet temperatures;
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Inspection of the blower turbine;
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Analysis of the condensate drain (often blocked when maintenance is neglected).
Diagnosis confirmed: lack of periodic maintenance
The diagnosis was clear: the device had not been cleaned for over a year .
Clogging of this magnitude leads to:
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A decrease in energy efficiency (up to 30%);
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An increase in electricity consumption ;
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Increased pressure on the external compressor , which reduces the life of the system;
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And sometimes ice forms on the coils .
In this case, the compressor was still working correctly, but there was a risk of overheating in the medium term if no action was taken.
AirGreen intervention: complete cleaning and refurbishment of the air flow
Our technicians undertook a complete professional cleaning , step by step:
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Removing and washing air filters with a mild antibacterial solution;
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Dusting and disinfection of the evaporator coil using a biodegradable cleaner;
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Cleaning the blower turbine to remove invisible buildup;
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Checking and purging the condensate drain to avoid any water overflow;
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Restart and full functional test , with temperature and pressure measurements.
The result?
Airflow restored to 100% , a blown temperature of 7°C in air conditioning mode , and a noise level reduced by half .
Results and recommendations
The customer immediately noticed the difference: fresher, more consistent air and quieter circulation .
Our team took the time to explain to him the importance of annual preventive maintenance , especially before the summer season, in order to avoid:
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Overconsumption of electricity;
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Electronic card or fan failures;
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Bad odors due to mold in the filters.
We also recommended scheduling a thorough cleaning twice a year , especially if there are pets or high humidity in the home.
AirGreen: your HVAC expert in Laval and Greater Montreal
This service call in Sainte-Rose perfectly illustrates the value of proactive maintenance .
At AirGreen , we combine technical expertise and an educational approach: each customer understands the origin of the problem, the solutions implemented and the measures to adopt to extend the life of their equipment.
Whether you are in Montreal, Laval, Longueuil, on the North Shore or the South Shore , our team is always ready to intervene quickly to:
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Repair a faulty wall-mounted heat pump;
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Carry out a complete cleaning of your HVAC units;
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Optimize the energy performance of your installations.
Each intervention is documented, tested and validated to guarantee restored comfort and lasting peace of mind .
In summary
This Midea heat pump in Sainte-Rose has regained all its power thanks to a simple but crucial AirGreen maintenance .
Regular maintenance can often prevent costly repairs.
With AirGreen, each intervention is an opportunity to restore life and efficiency to your HVAC system , while ensuring your comfort in summer and winter.