An outdoor unit obstructed under a balcony: a typical case in Pointe-Claire
At AirGreen , we were recently called to Pointe-Claire , on Montreal's West Shore , for the complete cleaning of a central heat pump installed in the immediate vicinity of a brick wall and partially sheltered under a small balcony. This type of configuration, while common in many single-family homes in the area, presents particular challenges in terms of ventilation and maintenance.
Diagnosis: Reduced yield due to dirt and limited space
Upon arrival, our team observed several typical signs of a lack of maintenance:
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Accumulation of dust and debris on top of the condenser.
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Dead leaves and dirt trapped at the base of the unit.
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Clogged fins , limiting airflow.
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Condensation and humidity are exacerbated by the proximity of the wall.
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Abnormal fan noise , a sign of an imbalance due to dirt.
The owner mentioned a noticeable decrease in indoor comfort and an increase in electricity consumption . These symptoms were perfectly consistent with a heat pump whose outdoor condenser was partially obstructed and poorly ventilated.
AirGreen's intervention: rigor and method
Our certified technician first performed a complete inspection of the system to ensure that no mechanical or electrical components were damaged. Next, we undertook a thorough cleaning of the outdoor unit, following these steps:
1. Clearing the work area
We temporarily moved the cleaning products from the upper balcony to prevent any contamination. The limited space required great care to protect surfaces and electrical connections.
2. Pre-cleaning with compressed air
A gentle blast of compressed air dislodged the fine dust trapped between the fins without deforming them.
3. Application of an environmentally friendly degreaser
We used a biodegradable, citrus-based product , safe for aluminum surfaces and for the environment, to dissolve the greasy film formed by the mixture of dust and moisture.
4. Low-pressure rinsing
Using a controlled jet of water , we carefully rinsed the fins to remove residue without risking damage to the coil.
5. Condensation drain check
The heat pump drain was checked and flushed to prevent any accumulation of stagnant water, which is particularly important in a semi-enclosed space like this.
6. Final check and restart
Once the cleaning was complete, we tested the system: optimized airflow, reduced noise, and restored energy efficiency .
Results and benefits for the client
After the intervention, the owner immediately noticed:
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Faster cooling inside.
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A reduction in the operating noise of the outdoor unit.
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A decrease in power consumption was observed on the smart thermometer.
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Improved air circulation around the condenser.
We also recommended freeing up more space around the heat pump (at least 60 cm on each side) and avoiding storing chemicals above it , to limit corrosion or accidental contamination.
The importance of preventative cleaning
This type of intervention perfectly illustrates why annual maintenance of a central heat pump is essential:
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It preserves the lifespan of the compressor and fan .
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It maintains maximum energy performance .
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It improves indoor air quality .
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And most importantly, it prevents costly breakdowns .
At AirGreen, we combine technical expertise, ecological products and respect for manufacturers' recommendations to offer safe and effective cleaning, whether you are in Montreal, Laval, Longueuil, on the North Shore or the South Shore .