Turning a basement into a truly comfortable living space—especially during Québec’s harsh winters—is a common challenge for many homeowners in Montréal, Laval, Longueuil, on the North Shore and the South Shore. At AirGreen, we support these transformations with HVAC solutions that are customized, high-performing, and perfectly adapted to each home’s reality. This article shares the real-life story of a couple from Laval who, thanks to the installation of a wall-mounted heat pump, can finally enjoy their previously freezing basement to the fullest.
Turning an unusable basement into a cozy oasis: an increasingly common request
Many basements in Québec lack proper heating, making them cold and uninviting for months at a time. In this case, our clients, owners of a single-family home in Laval, were only using their basement for storing boxes, since they didn’t have an efficient heating system. Their goal: to turn the space into a home theatre and guest bedroom, without having to modify their existing central heating setup.
The choice of a wall-mounted heat pump: flexibility and efficiency
After conducting an on-site assessment, our technicians recommended the installation of a Gree Lomo 12,000 BTU wall-mounted heat pump. This recommendation was based on several key criteria:
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Performance matched to the basement’s size (approximately 550 sq. ft.)
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Rapid heating capacity even at -20°C
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Reversible system also offering cooling in summer
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Easy installation without major renovations or added ductwork
The Gree Lomo 12,000 BTU model is well-known for its reliability, quiet operation, and excellent energy efficiency, boasting a SEER of 20 and an HSPF of 10. On top of that, this model is eligible for Hydro-Québec’s LogisVert grant, which helped the clients significantly reduce the net cost of installation.
A seamless installation, adapted to the basement’s architecture
Our team travelled to Laval for a full installation in just one day. Here's how we carried it out:
Assessment of the structural wall
The basement wall was made of concrete blocks covered in drywall and insulated with mineral wool. We had to carefully select the mounting spot to ensure the unit was firmly anchored while allowing proper airflow clearance.
Drilling the exterior exit
The compressor was installed outside, on the east-facing side of the home, sheltered from prevailing winds. We drilled a discreet opening for the refrigerant lines, condensation drain, and power supply—ensuring airtight and moisture-proof sealing.
Electrical connections and performance testing
The unit was connected to the home’s electrical panel with a dedicated breaker, in full compliance with the Canadian Electrical Code. After commissioning, we conducted pressure checks, performance tests, and airflow measurements to guarantee optimal performance.
The result: a basement that became a highlight of the home
A few weeks after installation, we followed up with our clients for feedback. Their response was clear:
“We still can’t believe it. We used to avoid the basement in winter. Now we spend our family movie nights there. It’s quiet, warm, and we’re wondering why we didn’t do this sooner!”
They also noted that their energy consumption hasn’t increased significantly, thanks to the heat pump’s efficiency, which more than makes up for its operating costs.
Why choose AirGreen for your wall-mounted heat pump needs
At AirGreen, we specialize in custom HVAC solutions throughout Montréal, Laval, Longueuil, the North Shore and the South Shore. Our approach is built on several essential pillars:
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Accurate assessment of thermal and structural needs for each space
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Transparent recommendations, based on real-world performance data
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Professional installation that meets the highest standards
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Guidance through available grant programs (Hydro-Québec, LogisVert, etc.)
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Post-installation follow-up to ensure complete satisfaction
LogisVert grant: a valuable incentive for Québec homeowners
One of the key advantages of this installation was eligibility for Hydro-Québec’s LogisVert grant. In this case, the Gree Lomo 12,000 BTU model allowed the clients to receive a $1,287 rebate, making the project not only more affordable but also more profitable long term.
We assist all our clients throughout the grant application process, providing the necessary documentation and clearly explaining every step.
Practical tips before heating a basement with a heat pump
Here are some key tips we often share with clients before tackling a similar project:
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Properly insulate the basement walls and floors to maximize efficiency
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Choose a BTU output suited to the space, not too weak or oversized
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Plan a strategic location for the wall unit to avoid cold spots
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Consider the outdoor compressor placement to reduce noise
Expertise you can see in the results
This project in Laval perfectly illustrates our ability to transform an underused space into a comfortable living area with a well-chosen and well-installed wall-mounted heat pump. By combining technical expertise, quality products, and impeccable customer service, we turn every project into a lasting success.
Want to make your basement more comfortable right now?
Trust our team for a custom wall-mounted heat pump installation, perfectly tailored to your needs. Whether you’re in Montréal, Laval, Longueuil, on the North Shore or the South Shore, we’re here to upgrade your everyday comfort.