Everything you need to know before installing a wall-mounted heat pump in your home
At AirGreen, we understand that choosing a wall-mounted heat pump is a big decision. Whether it’s for your comfort, your energy bills, or your environmental footprint, this HVAC solution raises many questions. Here are the 10 most frequently asked questions by our clients in Montréal, Laval, Longueuil, the North Shore and the South Shore — along with clear, detailed and professional answers.
1. What exactly is a wall-mounted heat pump?
A wall-mounted heat pump is a reversible heating and air conditioning system installed high on an interior wall. It works using a heat exchange principle: it pulls heat from the outdoor air and transfers it inside during winter, and does the opposite in summer to cool your rooms.
These systems are made up of a wall-mounted indoor unit and an outdoor compressor. Often called mini-splits, they’re ideal for homes without centralized duct systems.
2. Is it really efficient in Québec’s climate?
Absolutely. Recent models — such as the Fujitsu KZAH, the Gree Extreme, or the Sharp ZU1 — are specifically designed for Québec’s winters. These heat pumps can operate in temperatures as low as -30°C thanks to variable-speed compressors and advanced defrosting technologies.
At AirGreen, we’ve installed high-performance units in Sainte-Julie, Laval, and even Beaconsfield, which have allowed homeowners to heat their homes effectively even during extreme cold snaps.
3. How much energy can I save with a heat pump?
A lot. A wall-mounted heat pump can reduce your energy consumption by 30 to 60% compared to traditional heating systems like electric baseboards. Energy Star-certified models like the Fujitsu or Bosch BIVA IDS Premium R-454B are among the most efficient on the market.
Plus, these systems may qualify for energy savings programs such as Hydro-Québec’s LogisVert program, boosting your long-term savings even more.
4. Is it noisy?
Not at all. Modern wall-mounted units are extremely quiet, often operating between 20 and 30 decibels, which is equivalent to leaves rustling. That makes them perfect for bedrooms, living rooms, or home offices.
During our installation in Sainte-Marthe-sur-le-Lac, one client was amazed that they couldn’t even hear their Fujitsu heat pump running at night.
5. What is the average lifespan?
A well-maintained wall-mounted heat pump can easily last between 12 and 15 years, or even longer. At AirGreen, we always recommend a complete annual HVAC maintenance to maximize the unit’s lifespan and performance. This includes filter cleaning, compressor inspection, and coil washing.
6. Do I need a permit or authorization to install a heat pump?
In most cases, no municipal permit is required for a standard installation. However, some Montréal boroughs, like Outremont or Plateau-Mont-Royal, may have specific requirements regarding noise levels or the visual appearance of outdoor units.
At AirGreen, we always verify municipal regulations before starting any installation.
7. How much does a wall-mounted heat pump cost, installed?
Costs vary depending on the brand, BTU capacity (9000, 12000, 18000, 24000), and the technical specifications. On average, for a quality wall unit installed by a certified contractor, prices range from $3,000 to $6,500.
Here’s a real-life example: an 18,000 BTU Gree Extreme installed in Longueuil, eligible for a $1,704 LogisVert grant, ended up costing $4,950 all included after the rebate.
8. What power level should I choose for my home?
The ideal capacity depends on room size, insulation, sunlight exposure, and more. Here’s a general guide:
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9,000 BTU: up to 400 sq. ft.
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12,000 BTU: 400 to 600 sq. ft.
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18,000 BTU: 600 to 1,000 sq. ft.
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24,000 BTU: 1,000 to 1,400 sq. ft.
Our experts always carry out a personalized heat load calculation with each estimate to determine the proper capacity. For example, in Oka, a corner house with poor insulation needed two 12,000 BTU units instead of a single 24,000 BTU system.
9. Are there grants available?
Yes, several programs are available:
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Hydro-Québec’s LogisVert (up to $2,200 depending on the system)
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Grants for replacing oil heating systems
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Occasional municipal programs
We assist our clients from A to Z in the grant application process, just like we did for a family in Saint-Lambert, who received a $1,704 refund after installing a Gree Sapphire heat pump.
10. What’s the difference between a wall-mounted and a central heat pump?
A wall-mounted heat pump heats or cools targeted areas, while a central heat pump connects to a duct system that distributes air evenly throughout the home.
Wall units are often more affordable up front, easier to install, and perfect for properties without existing ductwork — which is common in many homes across Montréal and Laval.
HVAC installation with AirGreen: expertise, precision, and client satisfaction
For years, AirGreen has been installing wall-mounted heat pumps across the Greater Montréal region. Each project is unique: we tailor our solutions to your property, your comfort needs, and your budget.
Whether in Brossard, Saint-Laurent or Repentigny, we take the time to assess every situation, optimize unit placement, and deliver a clean, professional, and long-lasting installation.
What our clients are saying
“Thanks to AirGreen, our condo in Longueuil is now comfortable year-round. Fast installation, clear advice, flawless service.” – Sophie G., Longueuil
“AirGreen’s team installed our Gree Extreme in Sainte-Julie. They even adjusted the exterior bracket for noise control and water drainage. Great job!” – Marc D., Sainte-Julie
In short: why trust AirGreen?
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Regional expertise in HVAC installation across Montréal, Laval, Longueuil, North Shore, South Shore
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Carefully selected trusted brands: Fujitsu, Gree, Sharp, Bosch, Tosot
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Transparent estimates, no hidden fees
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Full support with Hydro-Québec grants
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Reliable after-sales service and professional HVAC maintenance
Call us today for a free estimate. Let’s find the wall-mounted heat pump that’s the perfect fit for your home or building.