INSTALLATION and repair of Wall-mounted heat pumps
Maintenance of Wall-Mounted Heat Pumps in Montreal
The installation of a wall-mounted heat pump, such as the Fujitsu with Inverter technology, is the most popular solution in Quebec to heat and cool your home comfortably and economically all year round.
In the summer, it extracts heat from the inside to give you efficient air conditioning. In winter, even in very cold weather, it captures the calories present in the outside air to heat your home. Thanks to a high SEER (often 20+ on recent Fujitsu models), these devices consume much less electricity than a conventional wall-mounted air conditioner or an electric furnace.
The external condenser, the heart of the system, ensures high durability and maximum efficiency. For everything to work perfectly, the BTU power must be perfectly adapted to the area to be heated/cooled: incorrect sizing leads to overconsumption, premature wear and costly repairs.
That’s why regular maintenance is essential to extend the life of your wall-mounted heat pump and avoid breakdowns. In the following sections, we explain step by step how to effectively choose, install, maintain and repair your Fujitsu wall-mounted heat pump in Montreal and on the North Shore.
Choosing the Right Wall-Mounted Heat Pump
Choosing the ideal wall-mounted heat pump requires a precise evaluation of the surface area, insulation, exposure and Quebec climate (harsh winters). Don’t leave anything to chance: call on an expert for a professional calculation and avoid overconsumption or discomfort.
BTU power is crucial for optimal performance and energy savings. Here is a reference table adapted to Quebec homes (average insulation, Montreal and surrounding areas):
| Area (ft²) | Recommended Power (BTUs) | Examples of use |
|---|---|---|
| 300 – 500 | 9,000 BTU | Small room or condo |
| 500 – 800 | 12,000 BTUs | Medium living room or apartment |
| 800 – 1,200 | 15,000 – 18,000 BTUs | Open room or ground floor |
| 1,200 – 1,800 | 18,000 – 24,000 BTUs | Medium or open concept house |
Fujitsu offers excellent models (such as the LZAH1 or RLFW1 series) that perform down to -26 °C or lower, with a high SEER (up to 33 on the most recent ones). Gree also offers options with a heated base for efficient defrosting in the winter. Think multi-unit if you want to cover several rooms economically.
Location selection
The effectiveness of your wall-mounted heat pump depends a lot on its location. Choose an interior wall with good air circulation, with no furniture or curtains blocking the unit. Outside, place the unit on a sturdy stand, clear of snow, leaves, or obstructions, and away from windows to limit noise.
Wall-mounted ductless heat pump models, such as those from Fujitsu, distribute air evenly thanks to a high-performance evaporator. Avoid placing the indoor unit near bedrooms or living room to minimize noise (some Fujitsu models go down to 21 dB). A specialized contractor will be able to optimize the installation for Quebec standards and your hearing comfort.
Installation itself
Installing a wall-mounted heat pump is a critical step: entrust it to a certified professional to avoid leaks, loss of efficiency or voiding of warranty. Improper mounting can cause condensation, freezing, or performance problems in the winter.
Fujitsu models (e.g. RLS3 or RLFW1) require a solid fastening, a well-insulated refrigeration line and a perfect seal. Experienced technicians take into account the windows, extreme temperature variations in Quebec and the risk of condensate freezing. Fujitsu, Daikin and Mitsubishi offer all-season systems: reliable heating down to -20°C/-30°C and efficient air conditioning in summer, which greatly reduces your electricity bill compared to an electric furnace.
With more than 30 years of experience in the Quebec market, Fujitsu combines performance, discreet aesthetics and exceptional durability.
Testing and calibration – towards perfection!
Once installed, rigorously test your Fujitsu heat pump: check the heating/cooling, fan blades, defrost and response to outside temperatures. Fine-tuned calibration (via remote control or the Airstage app for some models) optimizes performance, reduces consumption and extends service life.
Fujitsu units (indoor + outdoor) are among the most efficient without additional electrical resistance. With a wide availability of parts in Quebec, repairs are fast and downtime is minimal.
Regular maintenance
Annual maintenance is essential to maintain the efficiency and longevity of your wall-mounted heat pump, especially in Quebec with sudden changes in temperature. Clean the filters every 1-3 months, check the outdoor unit (clear of snow), and have the components inspected by a pro before winter.
Fujitsu’s advanced models consume little power in heating mode and work even at very low temperatures thanks to anti-freeze technologies. For complete comfort, complete with a central air conditioning system.
Environmental impact
Installing a wall-mounted heat pump in Montreal is both economical and ecological. These devices harness the free energy of the outside air to heat or cool, consuming up to 3-4 times less electricity than traditional systems. The result: lower bills and reduced pressure on the Hydro-Québec network during winter or summer peaks. With current subsidies (LogisVert, federal), the CO₂ impact decreases significantly, making wall-mounted heat pumps a sustainable choice for your Quebec home.
What is the average cost of installing a wall-mounted heat pump?
| Range | Average Installed Price | Model Examples | Typical Floor Area |
|---|---|---|---|
| Economy | $3,000 – $4,500Gree | Lomo, Senville | 400–800 sq. ft. |
| Mid-Range | $4,500 – $6,500Fujitsu | Halcyon Standard, Daikin LV | 500–1,200 sq. ft. |
| Premium (Low Temperature) | $6,000 – $8,500Fujitsu | XLTH/R-32, Mitsubishi Hyper-Heat | 800–1,500 sq. ft. |
For a popular Fujitsu model (e.g., 12,000–18,000 BTUs, SEER 20+), you can often count on **$4,800 to $6,700** installed. Ultra-efficient models (SEER 25–30+, performing at -30 °C) go higher but offer the best performance.
Factors that influence the price:
- Power and performance: More BTUs or better HSPF = more expensive, but more savings.
- Installation: Easy access = $1,000–1,500; complex (2 floors, stone wall) = +$500–$1,500.
- 2026 grants: Via LogisVert (Hydro-Québec), get up to $120–140/1,000 BTUs at -8°C (often $1,200–5,400 total depending on model). Federal programs (Greener Homes) sometimes add $1,000–5,000. Actual net cost often **$2,500–5,000** after grants!
This investment pays for itself quickly: a Fujitsu wall-mounted heat pump reduces your heating/cooling bill by 30–60% compared to a conventional electric + AC furnace (savings of $500–1,500/year depending on your home). In 5–8 years, it pays for itself, while increasing the value of your property and being more environmentally friendly.
Need an accurate quote adapted to your home in Montreal, Laval, North Shore or Terrebonne? Contact us for a free on-site evaluation and maximize your grants!
Repair of your wall-mounted heat pump
If your wall-mounted heat pump no longer heats up or seems out of order, try these simple and safe checks before calling a technician. These steps often solve minor problems, especially in winter in Quebec where frost and extreme temperatures are common.
Problem: No heating in winter mode, quiet or unresponsive unit
- Check the power supply: Turn off the circuit breaker dedicated to the heat pump completely (indoor and outdoor if applicable), wait 1-2 minutes, then turn it back on. This often resets the system and fixes a temporary bug or overload.
- Check the lights/LEDs on the indoor unit: If the LEDs light up but you don’t have hot air despite the fan running, switch to “Off” mode on the remote control or thermostat for 30 seconds, then switch back to heating mode with a temperature of 4-5°C above the current room.
- Wait 5 to 10 minutes: The compressor may take a long time to start in heating mode, especially in very cold weather. If nothing changes, contact a certified professional – it could be a problem with the electronic board, reversible valve or refrigerant charge.
Problem: Frozen unit or no response in winter (frosted outdoor coils)
- Turn off the heating and switch to air conditioning: Set the remote control to “Cool” (or “Cooling”) with a minimum temperature of 20°C. This reverses the cycle and sends hot gas into the outer coils to melt the frost naturally.
- Let the fan spin: Keep the fan mode active to speed up defrosting. Never force with hot water or tools – risk of damage to the coil or compressor.
- Wait 20-30 minutes: Check if the frost has melted and if the heating is starting again. If the problem persists (recurring frost, no automatic defrost), there is probably a defect (icing sensor, reversible valve, faulty external fan or lack of refrigerant). Call an expert like SolutionAir immediately for an accurate diagnosis and avoid costly repairs.
Do not attempt to repair electrical components, the refrigerant, or the outdoor unit yourself – this can void the warranty and be dangerous. Fujitsu models and other high-performance brands in Quebec have a good automatic defrost cycle, but annual maintenance prevents 80% of these winter breakdowns.
Need quick help in Montreal, Laval, North Shore or surrounding areas? Contact us for a reliable and certified wall-mounted heat pump repair.
FAQ: Installation of Built-in Heat Pump
What advantages does a built-in heat pump offer compared to other heating or cooling systems?
- Exceptional energy efficiency : With a COP (Coefficient of Performance) often of 3 to 4+ (up to 300-400% efficiency), it produces 3-4 kWh of heat for 1 kWh of electricity consumed, compared to 1 kWh for 1 kWh on an electric furnace or baseboard heater. The result: savings of 30-60% on your Hydro-Québec bill (often $500-1,500/year depending on the house and the high-performance Fujitsu/Daikin/Mitsubishi model).
- Dual heating + air conditioning function : Reliable heating even in extreme cold (high-performance models down to -20/-30 °C with heating base and intelligent defrosting) AND efficient air conditioning in summer with dehumidification. An electric furnace only heats up, and a conventional AC does not offer heating.
- Zoned and precise comfort : Independent control per room (temperature, fan speed, silent mode at 20-25 dB). Homogeneous air diffusion and circulation (no lamination as with skirting boards where the heat rises to the ceiling). Ideal for condos, homes without ducts or additions.
- Attractive savings and subsidies : Rapid amortisation thanks to lower consumption. Eligible for Hydro-Québec’s LogisVert program (up to $6,700 in 2026 for ENERGY STAR or -8°C models), plus federal assistance. Net cost often reduced by $2,000-5,000 vs. installed price.
- Discreet and space-saving installation : Compact wall-mounted indoor unit (little floor space), quiet and aesthetically pleasing outdoor unit. Faster and less invasive than a central heat pump (no ducts to install) or a forced duct system.
- Eco-friendly and sustainable : Reduces demand on the peak power grid, uses modern refrigerants (R-32/R-410A low GWP on recent Fujitsu), and reduces emissions vs. oil/propane. Long warranties (10-12 years parts on Fujitsu, Daikin, Mitsubishi).
In summary, for an average Quebec home, a Fujitsu wall-mounted heat pump or equivalent offers the best comfort/savings/environment ratio compared to an electric furnace (more expensive to operate), baseboards (uneven comfort) or a simple AC (no heating). It’s a winning choice to reduce your bills while enjoying all-season comfort.
Curious to see if it suits your home? Request a free quote and a personalized grant evaluation!
What is the installation of an in-wall heat pump and what does this service involve?
This service includes several key steps performed by a certified technician:
- On-site evaluation : Calculation of the required power (BTUs) according to surface area, insulation, exposure and Quebec climate (winters at -30 °C).
- Indoor unit mounting : Wall mounting (usually high for better air distribution) with precise drilling for the refrigerant line.
- Outdoor Unit Installation : Placement on stable support (roof, floor or wall), clear of snow and obstructions, with secure electrical connection.
- Connection and commissioning : Installation of the insulated refrigerant line, electrical connection, system vacuum, refrigerant load (often R-32 eco for the new Fujitsu), function tests (heating, cooling, defrosting).
- Configuration and verification : Optimal settings via remote control/app, calibration for maximum efficiency, delivery of documentation and activation of the warranty (up to 10-12 years on Fujitsu).
It’s a perfect solution for year-round comfort: reliable heating even in extreme cold, quiet air conditioning in the summer, significant energy savings (30-60% reduction on bills vs. electric furnace + AC), and eligibility for Hydro-Québec’s LogisVert grants (up to $6,700 in 2026 for ENERGY STAR or cold climate models).
Why call on a pro? DIY installation is risky (leaks, loss of warranty, non-compliance with CSA/electrical standards), and only a certified installer guarantees performance, safety and access to financial aid. At SolutionAir, we manage everything from A to Z for a quick (usually 1 day) and hassle-free installation.
Why should I hire a professional for the installation of my built-in heat pump?
Why should I hire a professional for the installation of my wall-mounted heat pump?
Having your wall-mounted heat pump installed by a certified professional (RBQ license, qualified technician) is highly recommended – and often mandatory – in Quebec. A DIY or poorly done installation carries major risks and negates most of the benefits. Here’s why entrusting the work to an expert is essential:
- Standards Compliance and Safety : Installations must comply with CSA, electrical and RBQ standards. A pro prevents overloading, short circuits, fires or refrigerant leaks (R-32/R-410A toxic to the environment and dangerous). Improper handling may cause permanent damage, injury, or lawsuit.
- Maximum performance and efficiency : Precise sizing (BTU adapted to your home), optimal location, well-insulated refrigerant line, vacuum and correct load, calibration for defrosting in winter. One mistake reduces efficiency by 20-50%, increases consumption, and causes premature failures.
- Preservation of the manufacturer’s warranty : Fujitsu, Daikin, Mitsubishi and others require installation by a certified installer to validate the warranty (often 10-12 years on compressor). A DIY or non-certified installation cancels it completely.
- Access to major grants : To benefit from Hydro-Québec’s LogisVert program (up to $6,700 in 2026 for an ENERGY STAR wall-mounted heat pump performing at -8°C, calculated at $120-140/1,000 BTU/h), the installation must be done by a recognized and registered contractor. Without it, you lose thousands of dollars in financial aid.
- Peace of mind and speed : An experienced pro usually finishes in 1 day, tests everything on site, explains how it works and manages the unexpected (e.g., difficult access, condo license). You avoid stress, costly future repairs and enjoy a reliable all-season system.
In summary, a professional installation is not a luxury: it is a necessity for the safety, real savings (bills + subsidies), durability and value of your home. At SolutionAir, our RBQ-certified technicians trained on the best brands (Fujitsu included) guarantee an impeccable installation and maximize your financial assistance.
Ready to take action? Request your free evaluation and personalized quote – we take care of everything, subsidies included!
How long does it take to install a built-in heat pump in a typical home?
The length of time it takes to install an in-wall heat pump depends on several factors, including the complexity of the project, the size of the unit, and the characteristics of your space. In general, a standard installation can take anywhere from a few hours to a full day. Our team of professionals will ensure that the installation is carried out in a neat and efficient manner, minimizing disruptions to your daily routine.
What preliminary steps are required before installing a built-in heat pump?
Before proceeding with the installation of your built-in heat pump, it is essential to take some preliminary steps. First, you’ll need to choose the optimal location for the unit. It should be well ventilated, free of obstacles, and easily accessible for future maintenance. Additionally, it is essential to ensure that the necessary electricity is in place to power the unit. Finally, our team will assess the compatibility of your space with your chosen built-in heat pump model, ensuring that it meets your heating and cooling needs.
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