An intervention under the stairs: between accessibility and efficiency
At AirGreen , we regularly work in unusual situations. This time, our team went to Lachine to perform a complete cleaning of a Galanz heat pump installed under an exterior staircase. An unusual installation, often chosen for aesthetic or space reasons, but one that presents particular maintenance challenges.
An environment conducive to fouling
Positioned close to the ground and partially sheltered by the staircase, the outdoor unit of this heat pump accumulated:
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Dead leaves and debris stuck around the base;
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A thin layer of dust and damp dirt on the ventilation grille;
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Traces of corrosion on the bodywork due to stagnant moisture.
This type of semi-closed environment promotes the gradual degradation of efficiency : dirt prevents heat dissipation, which forces the compressor to work harder, increasing energy consumption and reducing the lifespan of the device.
Initial diagnosis and preparation for cleaning
Our technicians began by:
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Disconnect the heat pump to ensure safe intervention;
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Clear away the leaves and debris around the base;
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Check the condition of the refrigeration pipe insulation — here, the outer foam coating was partially damaged by moisture.
A visual and tactile inspection confirmed that the heat exchanger was not obstructed , but covered with a thin, greasy film, typical of devices installed near parking lots.
The complete cleaning process
The cleaning process took place in several specific stages:
1. Mechanical cleaning and blowing
A compressed air blast was used to remove the dust and particles that had accumulated on the condenser fins.
2. Application of a biodegradable cleaner
An environmentally friendly cleaning product, based on non-corrosive agents, was sprayed on all metal surfaces. This type of solution effectively dissolves grease and deposits without damaging the fins or altering the original anti-corrosion treatment.
3. Low-pressure rinsing
Using a gentle stream of water, we rinsed the unit, taking care not to force the water towards the electrical connections. This method ensures complete removal of contaminants .
4. Checking drains and connections
The refrigeration lines and power cable were readjusted and resealed with a new layer of insulating sheath to prevent heat loss.
Immediate results and benefits
After drying and restarting, the Galanz heat pump has regained:
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A smooth and constant airflow ;
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A reduced noise level thanks to the decrease in mechanical resistance;
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A notable improvement in energy efficiency estimated at 10–15%.
The owner immediately noticed improved stability of the indoor temperature and quieter operation of the system.
AirGreen Prevention and Advice
At AirGreen, we emphasize the importance of annual maintenance of heat pumps, especially when the outdoor unit is installed:
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Close to the ground (risk of dirt and debris);
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Under a structure (lack of natural ventilation);
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Close to a driveway or garage (dust, salt, humidity).
We also recommend:
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To visually clean the area around the device at each change of season;
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To protect the insulating conduits with a sheath that is resistant to UV and moisture;
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To schedule a professional wash in the spring to prepare for the summer season.
By taking these simple steps, it is possible to extend the lifespan of the device while reducing energy costs and the risk of premature breakdowns.
By choosing AirGreen for the cleaning and maintenance of your HVAC system in Lachine , you benefit from professional, meticulous service that adheres to manufacturer standards. Every service is designed to optimize your equipment's performance , preserve air quality, and ensure lasting comfort in every season.