Giving an outdoor unit a second life through meticulous maintenance
At AirGreen , every HVAC cleaning service has one goal: to restore the performance and durability of your systems while ensuring healthy indoor air. During this service in Outremont , our team performed a complete cleaning of a wall-mounted heat pump installed high on a brick wall , typical of residential buildings in the area.
Initial diagnosis: signs of progressive fouling
The client had noticed that their heat pump seemed less efficient on hot days , and that the outdoor fan was making a slight grinding noise . During our inspection, we noted several telltale signs:
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An accumulation of dust and dirt on the condenser fins .
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Traces of moisture and discoloration due to prolonged exposure to the elements.
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Slightly rusty metal supports , threatening the long-term stability of the installation.
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Reduced airflow , resulting from a partial obstruction of the flow.
These symptoms demonstrated the need for a complete and preventative cleaning in order to restore the system's performance before the next summer season.
Key steps in our professional cleaning
1. Securing and powering off
Before starting, we secured the work area and disconnected the heat pump's power supply . The work was carried out on a high-mounted wall unit, requiring the use of a portable scaffold and safety harnesses to ensure the technician's safety.
2. Component Inspection
We checked the overall condition of the unit: fan, condenser, electrical connectors, and refrigerant lines. No apparent leaks were detected, but accumulated dust and debris significantly reduced airflow.
3. Mechanical dust removal
Gentle brushing with an anti-static brush removed the most stubborn particles from the front grille and fins. This first step, often overlooked, is essential before any wet washing to prevent dirt from becoming more deeply embedded.
4. Application of a biodegradable cleaner
We applied an environmentally friendly, neutral-based cleaner designed to dissolve grease, dust, and contaminants without damaging the materials. After approximately five minutes, a rinse with a jet of fresh water removed all residue.
5. Cleaning the fan and the drainage tray
The fan was thoroughly rinsed and then dried with compressed air. We also checked and cleaned the water collection tray and the drain pipe to ensure proper drainage and prevent any stagnation that could cause odors.
6. Finishing and final check
After complete drying, we applied a protective anti-corrosion treatment to the metal fixings and checked the system's operation. The unit resumed silent operation with a powerful and constant airflow.
Results observed after our intervention
Once the cleaning was finished, the difference was immediate:
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Energy efficiency restored : the heat pump was once again reaching its set temperature quickly.
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Reduced noise : the fan operated without friction or vibration.
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Optimal airflow : airflow through the condenser was fully restored.
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Impeccable visual appearance : the surface of the outdoor unit regained its original color, free of dust and deposits.
The importance of regular maintenance
At AirGreen, we often remind our customers that annual preventative maintenance is key to:
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Extend the lifespan of the heat pump.
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Avoid costly breakdowns due to fouling or corrosion.
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Reduce energy consumption , and therefore operating costs.
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Maintaining optimal indoor air quality is essential for comfort and health.
Why choose AirGreen?
Our certified technicians are distinguished by their technical expertise and professional rigor . We use only:
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Biodegradable products that are safe for surfaces.
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Specialized equipment adapted to each type of unit (walls, roofs, balconies, elevated structures).
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Methods that respect manufacturers' standards to guarantee the safety and performance of each system.
In conclusion
This service call in Outremont perfectly illustrates the value of regular maintenance for wall-mounted heat pumps . Even a properly functioning unit can accumulate dust, moisture, and debris, compromising its long-term performance. Thanks to the AirGreen team, this unit is now clean, efficient, and ready to withstand Montreal's varying climates with maximum effectiveness.