A complete under-balcony maintenance to breathe new life into an outdoor unit
As part of our regular HVAC maintenance interventions in the North Shore region, our team went to Sainte-Thérèse to perform a complete cleaning of a wall-mounted heat pump installed under a wooden balcony.
A confined space, poorly ventilated, and often exposed to dust and humidity: a typical environment which, over time, can significantly reduce the performance of an outdoor unit.
Before our intervention: a blocked and confined heat pump
The customer contacted us after noticing that their heat pump was producing less cool air and that the outdoor fan seemed to be running harder than usual.
Upon arrival, we observed several factors contributing to this loss of efficiency:
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Accumulation of dust, leaves and gravel around the unit.
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Fins partially obstructed by fine debris.
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Confined environment under the balcony, limiting air circulation.
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Storage objects (ladders, pallets, buckets) preventing proper ventilation.
These conditions cause the compressor to overheat , increase energy consumption , and in the long term, risk premature wear of the ventilation motor.
A cleaning method adapted to the constraints of the location
At AirGreen, we always adapt our methods to the environment of the unit. Under this balcony, the priority was to clean effectively without excessive splashing or spraying onto neighboring surfaces.
Our technicians proceeded as follows:
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Safe disconnection and complete visual inspection.
We checked the condition of the electrical connections, wall brackets and power cable. -
Protection of surrounding surfaces.
A waterproof sheet was placed under the heat pump to collect water and cleaning residue. -
Cleaning the condenser and fins.
Application of a biodegradable product based on natural enzymes , specially designed to dissolve grease and dust without damaging metals.
Then, rinse gently at low pressure to dislodge ingrained dirt. -
Antibacterial disinfection of the ventilation grille.
This treatment eliminates mold spores and neutralizes odors accumulated in the confined area. -
Perimeter cleaning.
We cleared the space around the unit to ensure good air circulation , an essential condition for optimal performance.
After cleaning: a more efficient and quieter heat pump
As soon as it was switched back on, the fan regained a smooth and silent rotation .
Temperature and pressure tests confirmed a marked improvement in energy efficiency .
The customer immediately noticed improved indoor comfort and a reduction in outdoor noise.
Why this type of interview is essential
Even if the heat pump seems safe under a balcony, fine particles and stagnant moisture always end up seeping into the fins and fan.
Regular maintenance allows for:
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To improve the quality of the air released near the house;
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To preserve the efficiency of the compressor and heat exchangers;
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To reduce electricity consumption ;
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And above all, to avoid costly breakdowns during periods of intense heat or cold.
AirGreen's expertise: precise, safe and respectful maintenance
Every cleaning carried out by our team follows the manufacturers' recommendations and uses non-corrosive and environmentally friendly products.
We pay particular attention to areas that are often neglected: fins, condensates, turbine blade, suction grilles.
Our technicians also take care to correct structural causes (lack of ventilation, obstruction, poor positioning of the unit) to prevent future problems.
At AirGreen, we believe that smart preventative maintenance is the best investment to extend the life of your HVAC system.
Each service call is also an opportunity to educate our clients on proper seasonal maintenance practices:
Keep the space clear, check the internal filters every two months, and schedule an annual professional cleaning .
End result: a healthy system, restored efficiency
After our visit to Sainte-Thérèse, the client's wall-mounted heat pump is now operating under optimal conditions.
The airflow is regular, the noise is reduced, and the consumption is stabilized.
A simple cleaning, when done properly, can truly transform the performance of an HVAC system .