An elegant installation, a discreet but serious problem
At AirGreen , we often work in homes where aesthetics are as important as performance. This was the case during this repair of a Panasonic wall-mounted heat pump in Ville Mont-Royal , installed with a recessed finish to perfectly match the minimalist interior of the home.
The customer contacted us after noticing that the air blown by the unit was no longer as cold as usual , despite an apparently healthy outdoor compressor.
First observation: limited airflow
The Panasonic indoor unit, although aesthetically pleasing, was integrated into a wall alcove, but suffered from restricted airflow . This configuration, often favored for its sleek look, can, however , impair ventilation and heat dissipation if the minimum clearances are not respected.
Our technician therefore began the intervention with a complete visual inspection of the positioning and the conduits.
Technical diagnosis: coil fouling and temperature sensor drifting
After opening the front panel, we detected two main causes for the performance drop:
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Accumulation of dust and microfibers on the evaporator fins.
This deposit reduces heat exchange capacity and prevents efficient cooling. -
Room temperature sensor incorrectly positioned , distorting the internal reading and causing the compressor to stop prematurely.
These two elements combined perfectly explained the irregular cycles observed by the client and the sensation of warm air.
Steps of repair
1. Secure access to the built-in unit
Before any work could be done, the upper access panel had to be removed to clear the space around the Panasonic unit. This step required special attention to avoid damaging the wall finishes, typical of high-end homes in the Town of Mount Royal.
2. Complete cleaning of the coil
Using a specialized biodegradable HVAC cleaning product , we removed the dust accumulated between the fins. Rinsing was carried out under gentle pressure to avoid any deformation of the coil.
3. Sensor readjustment
We repositioned and recalibrated the ambient temperature sensor , which had become slightly detached from its original support. This detail, often underestimated, can modify the system's regulation logic and distort the thermal reading.
4. Checking drainage and electrical connections
We also cleaned the drain line and tightened the unit's electrical terminals, preventing any risk of future failure or condensate water overflow.
Results obtained after intervention
After a full system reboot, testing confirmed optimal performance :
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Blowing temperature at 8°C in cooling mode .
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Smooth and quiet operating cycles.
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Stabilized electricity consumption.
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No abnormal mechanical noise.
The customer immediately noticed the return of thermal and sound comfort , while appreciating that the unit retains its wall integration without aesthetic alteration.
AirGreen Analysis: A Successful, But Demanding Design
This intervention illustrates a common challenge: recessed or semi-recessed installations require sufficient peripheral ventilation. At AirGreen, we take care to evaluate these details during each visit to ensure a balance between interior design and energy efficiency .
Our recommendations for concealed wall installations:
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Leave a minimum clearance of 15 cm above and on the sides of the unit.
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Clean the filters every two months, especially if the front is difficult to access.
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Schedule an annual professional maintenance , including internal cleaning and sensor calibration.
AirGreen Expertise in Town of Mount Royal and Greater Montreal
This Panasonic heat pump repair in Ville Mont-Royal demonstrates our expertise in high-end residential environments, where discretion and performance must coexist.
Our certified technicians work throughout Greater Montreal, Laval, Longueuil, the North Shore and the South Shore , on recognized brands such as Panasonic, Fujitsu, Sharp, Midea, Zephyr, Trane and Gree .
Every repair is carried out according to the strictest standards in the HVAC industry, with calibrated tools and a respectful approach to materials and spaces.
Conclusion: comfort restored and efficiency restored
Thanks to meticulous and precise intervention , this customer's Panasonic heat pump has regained its full performance, while maintaining its discreet integration into the decor.
Further proof that at AirGreen , we combine technical expertise, respect for aesthetics and the durability of HVAC equipment — for reliable comfort, summer and winter.
AirGreen – Specialists in the repair, maintenance and installation of HVAC systems in Montreal, Laval, Longueuil, North Shore and South Shore.