At AirGreen, every service call is an opportunity to showcase our expertise in HVAC repair and restore our clients' comfort as quickly as possible. Today, we take you to Saint-Léonard, a vibrant residential neighbourhood in Montréal, where we were called to diagnose an issue with a Senville wall-mounted heat pump installed between two central rooms: a dining area and a bathroom.
A well-installed unit showing signs of weakness
The client contacted us after noticing that the unit no longer consistently produced cold air, despite correct settings on the remote. The system — a Senville AURA wall-mounted model — appeared to be in good shape, mounted high above a dividing wall that served key living spaces. However, the ambient air remained lukewarm even after long periods of operation.
Initial inspection: signs of a compressor failure or refrigerant loss
Our technicians, specialists in wall-mounted heat pump repair, began their diagnostic with a visual and functional inspection:
-
The indoor fan was running fine.
-
No error codes were displayed.
-
The outdoor compressor, however, only started sporadically.
-
The unit didn’t make any unusual noises but seemed to be working in vain.
We then checked the R-410A refrigerant levels, commonly used in Senville systems, and detected a small leak at the expansion pipe connection. Even a minor leak like this can gradually cause failures in heat pump systems and explain a drop in cooling capacity.
Repair steps: AirGreen’s expertise in action
The repair required a multi-step approach, which we clearly explained to the client before starting:
-
Complete circuit evacuation using a certified refrigerant recovery unit.
-
Welding and tightening of the leaking fitting on the low-pressure line.
-
Leak test using nitrogen, ensuring no more leaks were present.
-
Precise recharge with R-410A refrigerant, according to manufacturer specifications.
-
Full restart, followed by performance testing over multiple cycles.
We also cleaned the indoor filters and checked the condensate drain, which was slightly clogged — another factor that can contribute to ineffective cooling.
Results: back to optimal performance
As soon as the wall-mounted heat pump was restarted, comfort returned within minutes. The compressor started without delay, and the unit began delivering a steady stream of cool air throughout the living area. Using our measuring tools, we confirmed the unit was again achieving a blowout temperature of 8°C, a sign of a fully functional system.
The client was relieved and satisfied, especially to have found an efficient solution without needing to replace the entire unit.
Why choose AirGreen for your heat pump repairs in Saint-Léonard and across Montréal?
This case is typical of our interventions across Montréal, Laval, Longueuil, the North Shore, and the South Shore. Our technicians are trained to accurately diagnose even the subtlest malfunctions on wall-mounted HVAC equipment from all major brands: Senville, Gree, Fujitsu, Sharp, Bosch, and more.
We guarantee:
-
Durable repairs, using certified parts.
-
Fast response times in residential areas like Saint-Léonard.
-
Full transparency on pricing, with quotes provided before any work begins.
-
Practical advice to prevent future issues.
Best practices to avoid problems with your wall-mounted heat pump
During our visit, we recommended a few simple habits to the client:
-
Monthly cleaning of filters.
-
Scheduling a professional annual maintenance, including the outdoor unit.
-
Regularly checking for unobstructed airflow around the unit (furniture, curtains, etc.).
-
Monitoring seasonal performance, to detect any efficiency drop early on.
At AirGreen, we believe that prevention is the best protection to extend the life of your equipment and maintain constant comfort year-round.
Conclusion: a service call turned into a long-term solution
This intervention in Saint-Léonard perfectly illustrates our approach: fast, precise, customer-focused, and above all — effective. A Senville wall-mounted heat pump brought back to life thanks to thorough diagnostics and targeted repair. The result: a working system, a satisfied client, and a home ready to handle both summer heat and winter cold.
For any HVAC repair needs in Montréal, Laval, Longueuil, the North Shore, or the South Shore, think AirGreen — your trusted local partner for all your heating, ventilation, and air conditioning needs.
