A rushed HVAC decision: lessons from some wall-mounted heat pump installations in Montreal
In Montreal, many homeowners and condo dwellers choose to invest in a wall-mounted heat pump to improve comfort while reducing energy bills. It’s a logical decision, especially with attractive grants like Hydro-Québec’s LogisVert program, which can offer up to $2,500 in support. Yet despite these advantages, some residents in Montreal deeply regret their heat pump purchase… less than a year after installation.
Why such quick disappointment? At AirGreen, we’ve analyzed several real cases we’ve encountered in the field to understand these frustrations. Here’s what you need to know before installing a wall-mounted heat pump in Montreal, Laval, Longueuil, the North Shore or South Shore.
A poorly suited heat pump: where problems begin
One of the most common traps we observe during corrective service calls is a poor evaluation of the home’s thermal needs. Many Montrealers are sold 12,000 BTU models for spaces that are too large or poorly insulated, creating a mismatch between performance and comfort.
In a condo in Plateau-Mont-Royal, a client chose a generic brand unit online, without consulting an HVAC expert. The result: the unit ran constantly through the winter, struggled to heat the rooms, and showed premature wear on the compressor.
The importance of professional HVAC installation
The installation itself plays a critical role in long-term performance. During a service call in Verdun, our AirGreen team found that the wall-mounted unit had been installed only 10 cm from the ceiling — preventing proper air circulation. The outdoor unit, meanwhile, had been placed right next to a dryer vent, drawing in humidity and lint.
Thanks to our expertise, we repositioned both units and cleaned the entire system. Since then, the customer has experienced no further breakdowns and has noted a clear improvement in comfort.
Unknown or unreliable brands: a risky bet
The online market is full of cheap wall-mounted heat pumps, but few of these brands have proper after-sales service in Montreal. Without locally available replacement parts, even a minor breakdown can leave your unit out of service for weeks.
At AirGreen, we recommend proven models like the Gree Extreme, Fujitsu KZAH, or the Sharp ZU1, all compatible with provincial grants and backed by solid warranties.
Winter performance: a brutal test in Montreal
Heating capacity at -20°C is one of the most overlooked criteria by consumers. Many so-called “four-season” models only work well in cooling mode, and shut down as soon as the temperature drops below -10°C.
In a project in Ahuntsic, a homeowner contacted us after spending the whole winter with a freezing cold living room. His heat pump no longer defrosted properly and kept switching to safety mode. We replaced the unit with a Gree Sapphire 18,000 BTU, tested to operate in temperatures as low as -30°C. Since then, the client has confirmed he finally has the comfort he was looking for.
A poor installation can void your grants
Another common disappointment: grant applications being denied because the system wasn’t installed by a certified contractor. Several Montrealers have found out the hard way that only certified installers like AirGreen can get your grants approved.
We recently helped a couple in Rosemont who had their heat pump installed by an unlicensed contractor, only to have their $1,900 grant application rejected. We reinstalled a compliant system (a Fujitsu 15,000 BTU R-32) and assisted with the entire grant application until it was accepted.
Practical advice to avoid a regrettable purchase
1. Always ask for a personalized heat load assessment
Before any installation, it’s important to assess square footage, sun exposure, insulation, and space layout. Our AirGreen advisors provide free on-site evaluations in Montreal, Laval, Longueuil, the North Shore and South Shore.
2. Choose reliable brands and certified installers
Avoid cutting corners. A heat pump is a long-term investment. Choose brands with local service centers and full warranties, installed by a company holding valid RBQ and CMEQ licenses.
3. Make sure your system qualifies for available grants
LogisVert and Chauffez Vert eligibility rules can change. Our experts stay up to date to maximize your grant eligibility and ensure approval without surprises.
4. Schedule annual maintenance
Many breakdowns are preventable. Annual HVAC maintenance helps preserve performance and prevent early wear. AirGreen offers preventive maintenance plans for wall-mounted heat pumps, including cleaning, pressure checks, and thermostat calibration.
The AirGreen difference: expertise, precision, and complete support
At AirGreen, we’ve helped hundreds of households across Greater Montreal install wall-mounted heat pumps they won’t regret. Our approach is based on rigorous technical analysis, reliable products, and comprehensive support from A to Z: product selection, installation, maintenance, and grant assistance.
We understand that every home is different. That’s why we personalize every HVAC solution, to provide long-lasting comfort, summer and winter.