Essential maintenance to restore performance and air quality
At AirGreen , we know that a high-performing wall-mounted heat pump depends directly on the cleanliness of its internal components. This week, our team was called to Sainte-Julie, on the South Shore, to perform a complete cleaning of a wall-mounted unit whose client had noticed a decrease in efficiency and a feeling of heaviness in the air in their home.
Symptoms before our intervention
The owner noticed several telltale signs:
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The air being blown seemed less fresh than before.
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A slight, unusual noise was coming from the fan.
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A dusty smell was noticeable when it was switched on.
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Electricity consumption was increasing for no apparent reason.
Upon inspecting the indoor unit, we quickly confirmed the source of the problem: significant dust buildup on the filters and fins , early mold growth on the evaporator , and a partially blocked drain , causing abnormal water flow.
Steps in professional cleaning
At AirGreen, every wall-mounted heat pump cleaning follows a rigorous methodology inspired by manufacturer recommendations and best practices in the HVAC industry.
1. Preparation and protection of the premises
First and foremost, we protect the wall, floor, and surrounding furniture using drop cloths and a specialized washing bag for wall-mounted appliances. This step prevents any splashing during rinsing.
2. Dismantling and inspection
We removed the filters, the front hood, and the air deflector. Each part was carefully examined:
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Filters clogged with household dust.
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Evaporator fins covered with a greasy film, reducing heat transfer.
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Fan (turbine) slightly sticky, accumulating dirt.
3. Washing and disinfection
We performed a gentle pressure wash of the evaporator using a biodegradable solution, specially designed to dissolve grease and microbial contaminants.
The filters were cleaned with hot soapy water, then air-dried.
An antibacterial and antifungal treatment was applied to the entire unit to prevent mold growth.
4. Cleaning the drain and fins
The drain was cleared with a hand pump and rinsed with clean water until the flow was perfectly smooth. The condenser fins were carefully straightened and dusted to optimize airflow.
5. Verification and return to service
After complete drying, we reassembled the device and performed a performance test :
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The airflow had once again become strong and uniform.
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The blowing temperature stabilized quickly.
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The device worked silently, like new.
The result: clean air and a revitalized heat pump
The customer immediately noticed the difference: the indoor air was fresher, healthier, and better distributed . Furthermore, thanks to the deep cleaning, the heat pump regained optimal energy efficiency , thus reducing heating and cooling costs.
Why an annual cleaning is essential
Even the most efficient systems accumulate dust, pollen, and microparticles. Without regular maintenance, this can:
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Reduce performance by 20 to 30%.
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Promotes the growth of harmful molds.
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Clogging the fan increases noise and power consumption.
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To cause premature breakdowns.
At AirGreen, we recommend a complete professional cleaning once a year , ideally before the air conditioning season. We exclusively use environmentally friendly products that are safe for health and materials.
AirGreen's expertise at the service of your comfort
Our team is trained to work on all types of HVAC systems — wall-mounted heat pumps, multi-zone systems, central units, air exchangers, and ductwork . Every service call is documented and carried out in compliance with technical and environmental standards.
Using AirGreen means:
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To guarantee a deep cleaning , well beyond simple dusting.
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Preventing costly breakdowns .
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Improve the air quality in your house or condo.
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Extend the lifespan of your equipment.
In conclusion
This intervention in Sainte-Julie perfectly illustrates the importance of proper preventative maintenance. Thanks to our meticulous and environmentally friendly approach , the client now enjoys renewed comfort and a system ready to withstand Quebec's temperature variations, both summer and winter.