Reviving a clogged system for optimal comfort
At AirGreen , we recently performed a complete cleaning of a wall-mounted heat pump installed in Brossard , on Montreal's South Shore. The client had noticed a decrease in the performance of their outdoor unit , accompanied by weaker airflow and louder fan noise than usual . Upon inspection of the protective grille and condenser fins, it was clear that an accumulation of dust and grease residue was obstructing airflow.
Initial diagnosis: visible dirt and loss of yield
Our team first conducted a thorough visual inspection. We found:
-
A thick film of sticky dust on the front protective grille.
-
Partially obstructed heat exchange fins , preventing proper air circulation.
-
Traces of dried soap residue around the drain holes indicate a previous incomplete cleaning.
-
The unit was still able to function, but with a noticeable overconsumption of electricity due to the lack of air circulation.
This situation, common in devices not regularly maintained, causes a decrease in energy efficiency and can, in the long term, damage the compressor .
Steps for deep cleaning
1. Safety measures and preparation
Before any work began, we disconnected the heat pump's power supply to avoid any risk. The unit was partially disassembled to access the most heavily soiled areas without damaging sensitive components.
2. Application of a biodegradable cleaner
We sprayed an environmentally friendly cleaning product specifically formulated for HVAC systems. This gentle degreaser dissolves oily residues and accumulated dust on the heat exchanger fins and front grille. The product works for several minutes to loosen dirt without damaging the metal.
3. Low-pressure rinsing
Once the degreaser was activated, we rinsed with clean water at low pressure , ensuring the complete removal of deposits. This step restored the surface to its original shine while also restoring the thermal conductivity necessary for good heat transfer.
4. Cleaning the fan
The fan blades, often overlooked, were carefully washed to remove dust stuck to them. This cleaning reduces vibration and noise, while also improving airflow.
5. Check the drainage and control box
We checked the condensation drain to prevent any water accumulation that could cause mold or corrosion. The electrical box and wiring were also inspected to ensure the system's safety.
Result after cleaning
The result was immediate:
-
The airflow has become stable and powerful again.
-
The noise level has decreased significantly.
-
The blown air temperature adjusted more quickly to the thermostat setting.
-
The customer noticed better uniformity of the air conditioning inside, even on hot days.
Thanks to this thorough cleaning, the heat pump can now operate at full capacity, while extending its lifespan and reducing the risk of premature breakdowns.
The importance of annual maintenance by AirGreen
Even a modern, high-performance wall-mounted heat pump requires regular preventative maintenance . Over time, dust, pollen, pollution, and cooking grease accumulate on the heat exchange surfaces. This not only reduces efficiency but can also lead to indoor air quality problems .
At AirGreen , we use safe and environmentally friendly products , professional tools adapted to each model, and we respect the manufacturers' guidelines for each intervention.
We operate throughout Montreal, Laval, Longueuil, on the North Shore and the South Shore , to ensure our clients lasting comfort, cleaner air and maximum energy efficiency.
Conclusion
This cleaning in Brossard demonstrates once again the importance of rigorous maintenance of HVAC systems. A simple accumulation of dust can reduce the efficiency of a heat pump by more than 30% . By entrusting the cleaning to AirGreen , you are investing in the performance, reliability, and longevity of your unit.