Essential work under a terrace: renovating a neglected unit
Under a shaded terrace in Sainte-Catherine , our AirGreen team was recently called in for a complete cleaning of a wall-mounted heat pump installed in a less than ideal environment: limited space, dust accumulation, humidity, and poor ventilation. These conditions had resulted in significant dirt buildup on the casing, fins, and ducts , directly impacting the unit's performance and the client's indoor air quality.
Initial state: a dirty and inefficient device
Upon our arrival, we noticed:
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A thick accumulation of dust and mud on the outer casing.
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Obstructed fins significantly reducing airflow.
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Traces of moisture due to proximity to the ground and lack of natural ventilation.
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An abnormal operating noise , a sign of a fan unbalanced by dirt.
The customer had noticed a significant drop in performance: the heat pump took much longer to heat and cool, while consuming more electricity.
Step-by-step deep cleaning
At AirGreen, we prioritize a methodical and safe approach , in accordance with manufacturers' recommendations. The intervention proceeded as follows:
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Power outage and securing of the workstation under the terrace.
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Partial dismantling of the hood to access the heat exchanger and fans.
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Vacuuming and dusting using a soft air compressor and an anti-static nozzle, so as not to damage the fins.
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Application of a biodegradable cleaner designed for HVAC systems, removing greasy residues and mineral deposits.
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Controlled low-pressure rinsing to prevent any risk of water seeping into electrical components.
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Cleaning the condensation drain , often neglected, but crucial to prevent water backflow and mold.
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Checking the wiring and fixings , which are exposed to moisture and frost, to ensure the safety and longevity of the system.
Results after intervention
After complete drying and restarting, the change was immediate:
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The airflow has been restored to full capacity .
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The operating noise has returned to normal.
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The heat pump's energy efficiency has returned to its original levels.
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The customer immediately noticed more stable thermal comfort and a reduction in heating time .
We also advised the owner to plan a complete cleaning twice a year , particularly in spring and autumn, to prevent dust and moisture from accumulating again under the terrace.
Why use AirGreen
This intervention perfectly illustrates the importance of regular preventative maintenance , especially in confined environments and those exposed to humidity.
At AirGreen , we use ecological methods , specialized tools , and we apply the highest standards of HVAC cleaning in Montreal, Laval, Longueuil, on the North Shore and the South Shore.
Professional cleaning of your heat pump extends its lifespan, improves your comfort and allows you to make significant energy savings while breathing healthier indoor air .