A deep clean in a confined urban environment
At AirGreen , we regularly work in Montreal 's central neighborhoods, where HVAC systems are often installed in tight or partially enclosed spaces. This was the case during a complete cleaning of a Mestro inverter wall-mounted heat pump in the Ville-Marie sector, in the heart of downtown. Despite limited access, our team successfully restored the system's efficiency while ensuring a safe and meticulous cleaning.
Before the intervention: a dirty and poorly insulated appliance
The client contacted us after noticing a significant drop in airflow and increased electricity consumption . Upon arrival, our visual inspection immediately revealed several issues:
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A thick layer of dust on the hood and fins of the outdoor unit.
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Significant fouling of the condenser due to urban pollution and lack of ventilation in the narrow courtyard.
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Pipe insulation that is severely deteriorated , cracked by sun and humidity.
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Traces of stagnant moisture and superficial corrosion on the refrigeration fittings.
These signs indicated not only a lack of regular maintenance , but also a loss of energy efficiency of up to 20 to 30%. In urban areas like Ville-Marie, where fine particles and soot accumulate rapidly, this type of situation is very common.
Steps for a complete AirGreen cleaning
To restore the heat pump to its original performance, our team carried out a thorough cleaning in several stages , respecting the manufacturer's instructions and AirGreen safety standards.
1. Securing and complete diagnostics
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Power outage and refrigeration circuit check.
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Initial measurement of gas pressure and yield using a digital manometer to establish a post-cleaning baseline for comparison.
2. Mechanical and chemical cleaning of the condenser
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Removal of the front panel and protective grille.
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Vacuuming and dusting the fins with a low-pressure compressed air cleaner .
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Application of a biodegradable cleaning product to dissolve grease and stuck-on particles.
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Rinse with clean water, then dry completely using an air blower .
3. Restoration of insulation and drainage
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Removal of the old , cracked insulation sheath , replaced with UV-resistant neoprene foam.
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Check the condensation drain to ensure there is no obstruction.
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Cleaning of the support and the floor to remove dust deposits and prevent corrosion.
4. Final inspection and return to service
Once the system was clean and isolated, we performed a full performance test . The client immediately noticed:
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A more powerful and stable airflow .
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A decrease in the outside noise level .
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A noticeable reduction in energy consumption after a few days of use.
After the intervention: a system like new
The maintenance has restored optimal performance , ensuring better indoor comfort while extending the life of the heat pump.
At AirGreen, we emphasize the importance of annual preventative maintenance , particularly for installations exposed to pollution or direct UV rays. These regular interventions allow us to:
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Maintain excellent indoor air quality .
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Reduce the compressor's workload.
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Prevent breakdowns related to overheating or lack of refrigerant.
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Maintain energy efficiency in accordance with the manufacturer's standards.
AirGreen's expertise at the service of urban environments
Our technicians are trained to work even in complex conditions: restricted balconies, narrow alleyways, or installations on the roofs of buildings.
Thanks to our specialized equipment and environmentally friendly methods , we ensure safe, precise and durable cleaning for all types of wall-mounted heat pumps and HVAC systems in Montreal, Laval, Longueuil, on the North Shore and the South Shore.
AirGreen Air Conditioning & Heating — Your reference in maintenance, cleaning and optimization of residential and commercial HVAC systems for over a decade.