In-depth maintenance to breathe new life into a central heat pump
At AirGreen , we know that a complete HVAC system cleaning isn't just about aesthetics: it's an essential step in preserving the performance, durability, and air quality of a home. Recently, our team worked in Sainte-Catherine , on Montreal's South Shore, to perform a thorough cleaning of an outdoor central heat pump that was showing several signs of fouling.
A revealing diagnosis: dirt, corrosion, and loss of efficiency
Upon arrival, the situation was clear: the outdoor unit was clogged with debris, dead leaves, and a thin layer of dust stuck to the fins . The unit, exposed to the elements for several seasons, showed signs of oxidation on the top cover, while the heat exchange coils were partially blocked. These deposits hampered airflow , forcing the compressor to work harder, which increased electricity consumption and reduced the system's efficiency.
We also noticed that the refrigerant lines were slightly inadequately insulated, allowing some heat to escape — a common but often overlooked problem during maintenance.
AirGreen's intervention: method, rigor and respect for equipment
To restore the heat pump's optimal performance, our team followed a professional, multi-step cleaning process that complies with manufacturer standards.
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Power outage and preliminary inspection : before any handling, we secured the unit to ensure safe operation.
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Removal of the top cover and cleaning of the fins : using a low-pressure water jet and a biodegradable cleaner, we removed the dirt and pollen deposits without damaging the aluminum fins.
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Degreasing of the fan and internal compartment : the fan blades had a thin layer of greasy residue, which was removed using a mild, non-corrosive product.
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Condensation drain and unit base check : the drain, partially obstructed by leaves, was cleared to prevent any accumulation of stagnant water.
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Visual inspection of electrical connections and coil : we checked for oxidation on the terminals and tightened the connections if necessary.
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Restart and performance check : once the cleaning was complete, we measured the pressure, temperature and airflow to confirm the return to optimal performance.
Results: restored efficiency and cleaner air
After our intervention, the client immediately noticed a reduction in compressor noise and improved temperature stability inside the house. The system regained its initial energy efficiency , resulting in more economical consumption and consistent comfort, even on the hottest days.
In addition, removing debris and potential mold around the fins helps improve indoor air quality — a particularly important factor for homes with children or people with allergies.
Why regular cleaning is essential
A poorly maintained central heat pump can quickly lose up to 20% of its energy efficiency , cause premature breakdowns , or even negatively impact indoor air quality. At AirGreen, we recommend a complete annual service , including coil cleaning, refrigerant checks, and inspections of the indoor and outdoor fans.
Our qualified technicians serve Montreal, Laval, the North Shore, and the South Shore , using eco-friendly products and techniques tailored to each make and model. Our goal: to extend the lifespan of your HVAC system while optimizing your comfort and energy savings.
By choosing AirGreen, you benefit from professional, transparent, and rigorous service tailored to each type of HVAC installation—whether it's a wall-mounted heat pump, a central system, or a multi-zone unit. We are committed to ensuring your equipment breathes, so you can breathe better, all year round.