Essential indoor maintenance for performance and air quality
In Côte-Saint-Luc, a client contacted us for a complete cleaning of their wall-mounted heat pump installed in a living room with a cathedral ceiling. The unit, used year-round for heating and cooling, was beginning to show several symptoms typical of internal dirt buildup : reduced airflow, slight dusty odors, and unusual fan noise. With the arrival of spring, it was the perfect time for a deep cleaning to optimize the HVAC system's performance before the warmer months.
Wall system inspection and diagnosis
Upon arrival, we noticed that the wall-mounted heat pump, installed high up, needed thorough maintenance . Difficult access had rendered previous cleanings incomplete. After opening the cover:
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The air filters were covered with a thin layer of dust and pollen.
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The evaporator showed a visible accumulation of lint and micro-particles, blocking airflow.
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The tangential fan (blower) had a greasy film on its blades, a sign of prolonged use without professional cleaning.
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The condensation drain contained a slight deposit, which could cause an overflow during periods of high heat.
Such a level of soiling is common in well-insulated homes, where dust and microparticles accumulate more quickly.
Steps in professional cleaning by AirGreen
1. Protection of the work area
We began by protecting the furniture and walls with drop cloths and absorbent towels. This precaution prevents any splashing of water or residue during the washing process.
2. Disassembly and pre-cleaning
The front hood, filters, and directional flaps were carefully removed. After initial dusting with compressed air, we immersed the filters in a biodegradable solution designed to dissolve grease and allergens.
3. Deep cleaning of the evaporator
Using a gentle pressure washing kit , we applied an eco-friendly detergent to the evaporator, allowing it to work before rinsing. This step removes ingrained dust and microbial deposits that cause unpleasant odors. The result: sparkling fins and fully restored airflow .
4. Degreasing and disinfecting the fan
The often-neglected tangential fan was cleaned blade by blade using a fine brush and an antibacterial product. This treatment removes oily deposits and prevents mold growth, ensuring cleaner, odor-free air .
5. Drain cleaning and condensation test
The drain was purged with compressed air and rinsed with hot water to ensure proper drainage. We then ran the system in air conditioning mode to verify that the condensate was draining correctly .
6. Drying, reassembly and final testing
Once all the components were dry, we reassembled the unit and performed a complete performance test :
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Verification of the blowing temperature (measured difference of 9 °C between the ambient air and the expelled air).
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Airflow and noise level control.
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Final inspection of the drain and motorized flap.
Everything worked perfectly.
Results and benefits for the client
After the cleaning, the difference was immediate: more powerful airflow, fresher and healthier air, and quieter operation . The customer mentioned that the room now reached the desired temperature twice as fast as before the service.
At AirGreen, we emphasize that cleaning the inside of a wall-mounted heat pump is more than just dusting. It involves a complete maintenance of the core of the HVAC system , aimed at:
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Preserve the health of occupants by eliminating bacteria and allergens.
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Reduce energy consumption by up to 20%.
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Extend the life of the equipment by reducing the load on the motor and compressor.
AirGreen: Your HVAC maintenance partner in Montreal and the surrounding area
Whether you're in Côte-Saint-Luc, Montreal, Laval, Longueuil, on the North Shore or the South Shore , our team uses professional equipment and environmentally friendly products. We strictly adhere to manufacturers' recommendations and guarantee meticulous cleaning that is safe for your electronic components.
Our customers thus benefit from a more efficient, quieter and more durable HVAC system , while enjoying healthier indoor air.