Installation of a FUJITSU Orion XLTH+ 15,000 BTU wall-mounted heat pump in Saint-Eustache
Installation of a FUJITSU Orion XLTH+ 15,000 BTU wall-mounted heat pump in Saint-Eustache. Optimal comfort, high energy efficiency and ideal solution for basements on the North Shore.
In summer, the outdoor unit rejects the house's heat outside.
Generic illustration of this type of installation, not a survey of this job site. Tap a number.
Mounted level on a wall plate, high enough for the air to reach the whole room, with enough space around it to slide the filters out easily.
The refrigerant lines, the communication cable and the drain go through the wall in a single opening, sealed against water, cold air and insects.
Two insulated copper pipes connect the two units. Outside, a line cover can protect them from sun, knocks and weather.
A shut-off switch near the outdoor unit isolates it safely for service. It must stay accessible at all times.
The compressor and the fan. In heating mode it captures heat from the outdoor air, even in winter, and moves it inside.
On the ground or on the wall, it keeps the unit above accumulated snow. The unit stays clear and defrost water can drain away.
The fan needs to blow freely. Storage, a fence or a wall too close, and efficiency drops while noise goes up.
Strategic Installation in a Residential Basement for Four-Season Comfort
At AirGreen, we recently completed a full HVAC installation in Saint-Eustache, featuring a FUJITSU Orion XLTH+ 15,000 BTU wall-mounted heat pump, a model renowned for its performance in cold climates. This intervention aimed to transform an uncomfortable basement into a pleasant living space, summer and winter alike, while optimizing energy consumption.
Upon our arrival, we observed a typical configuration for homes on the North Shore: a semi-underground basement, with a narrow horizontal window, a low ceiling, and a wall partially occupied by a brick fireplace. These elements directly influenced our installation approach.
Technical Challenges Encountered and Custom Solutions
Optimal Positioning Above the Window
The indoor unit was installed directly above the window, a strategic choice dictated by several constraints:
- Maximize air diffusion in a low-ceiling room
- Avoid any obstruction related to the brick fireplace located on the right
- Maintain adequate distance from the ceiling for effective air circulation
This type of installation requires particular precision. Incorrect height or misalignment can impair the overall performance of the system. We therefore performed precise laser leveling and adjusted the wall mount to ensure a perfectly straight and stable installation.
Managing Space and Existing Materials
The wall featured decorative paneling on its lower part, which required special attention to:
- Avoid cracks or aesthetic damage
- Ensure solid fastening despite material variations
- Maintain a clean and professional finish
We used adapted anchors and reinforced certain fastening points to ensure the durability of the installation.
Integration with the Brick Fireplace
The presence of the brick fireplace presented an additional challenge. It was necessary to avoid any thermal interference and preserve the aesthetics of the wall. We therefore:
- Positioned the unit at a safe distance from the fireplace
- Optimized the route of the refrigerant lines to bypass the structure
- Ensured a discreet finish with perfectly aligned pipe covers
Why the FUJITSU Orion XLTH+ 15,000 BTU Was the Ideal Choice
Exceptional Performance in Quebec's Climate
The FUJITSU Orion XLTH+ model is specifically designed for Quebec's extreme conditions. It offers:
- Efficient heating down to -30 °C
- Cooling capacity of 15,000 BTU
- Inverter technology for intelligent modulation
In this project in Saint-Eustache, this choice allows the client to significantly reduce their reliance on electric baseboards.
Energy Efficiency and Subsidy
This heat pump is eligible for the LogisVert subsidy, with an amount that can reach $1,296, which represents a significant financial advantage.
Its energy performance includes:
- SEER2: 28.7
- HSPF2: 13.0
- More eco-friendly R-32 refrigerant
This translates directly into measurable energy savings from the first season.
Remarkable Acoustic Comfort
In a space like a finished basement, noise is a critical factor. This unit offers:
- Indoor sound level as low as 26 dB(A)
- Smooth operation without sudden cycles
The client thus benefits from a quiet environment, ideal for a living room or office.
AirGreen Installation Process: Rigor and Expertise
Key Steps Carried Out on This Project
Our team followed a strict protocol to guarantee a durable and high-performance HVAC installation:
- Complete analysis of the room and airflow
- Choosing the optimal positioning of the indoor unit
- Precise drilling for pipe passage
- Installation of the outdoor unit on a stable support
- Refrigerant connection with complete vacuum pull
- Leak tests and commissioning
Each step was carried out by certified refrigeration technicians, ensuring full compliance with current standards in Quebec.
Impeccable Aesthetic Finish
A point often overlooked by some installers, but essential at AirGreen: the finish.
On this project, we have:
- Perfectly aligned the unit with the window
- Used discreet pipe covers
- Completely cleaned the area after installation
The final result is both functional and visually harmonious.
Concrete Results for the Client
After installation, the client immediately noticed several improvements:
- Uniform temperature throughout the basement
- Significant reduction in humidity
- Stable thermal comfort even on cold days
This type of transformation is common in our projects in Saint-Eustache, Laval, and on the North Shore, where basements are often underutilized due to inefficient heating.
Practical Advice for a Similar Installation
Avoid Common Mistakes
When installing a wall-mounted heat pump, certain errors can compromise performance:
- Installing the unit too close to the ceiling
- Neglecting airflow
- Undersizing the BTU capacity
At AirGreen, we always perform precise sizing to avoid these problems.
Importance of the Right Location
In a basement, it is crucial to:
- Position the unit in a central area
- Avoid direct obstacles (furniture, walls)
- Consider existing heat sources
The case of this installation in Saint-Eustache perfectly illustrates the importance of thoughtful placement.
Why Choose AirGreen for Your HVAC Installation
Our expertise is based on hundreds of installations carried out in Montreal, Laval, Longueuil, North Shore, and South Shore. We offer:
- In-depth technical analysis before each project
- Clean and durable installations
- Full transparency on costs
- Reliable after-sales service
We don't just install a machine: we optimize your long-term comfort.
Conclusion: An Intelligent Investment for Your Comfort
This installation of a FUJITSU Orion XLTH+ 15,000 BTU heat pump in Saint-Eustache demonstrates that with a professional approach, even a complex space like a basement can become perfectly comfortable.
Thanks to a combination of advanced technology, technical expertise, and careful installation, the client now benefits from a pleasant environment all year round, while reducing their energy costs.
How it goes, from the first call to the end
The main steps of this kind of job at AirGreen. Every house has its quirks: the estimate brings them out.
We look at the room, the outside wall, the line route and where the outdoor unit will go. That is where the capacity gets chosen.
Model, capacity and price, in writing. We also check whether the model qualifies for assistance programs.
Floors and furniture protected, wall plate position marked level, wall opening located.
A single opening, with the slope the drain needs to flow outside.
Set on a stand raised above the snow, with the clearances the manufacturer requires.
Connected, insulated and protected. The opening is then sealed against water, cold air and insects.
A dedicated circuit and an accessible disconnect near the outdoor unit.
Leak test, vacuum, then start-up and a check of heating and cooling.
Remote, modes, filters: we show you the essentials before we leave.
- The on-site estimateWe look at the room, the outside wall, the line route and where the outdoor unit will go. That is where the capacity gets chosen.
- The quoteModel, capacity and price, in writing. We also check whether the model qualifies for assistance programs.
- Getting readyFloors and furniture protected, wall plate position marked level, wall opening located.
- The wall openingA single opening, with the slope the drain needs to flow outside.
- The outdoor unitSet on a stand raised above the snow, with the clearances the manufacturer requires.
- Lines, cable and drainConnected, insulated and protected. The opening is then sealed against water, cold air and insects.
- The electrical workA dedicated circuit and an accessible disconnect near the outdoor unit.
- Tests and start-upLeak test, vacuum, then start-up and a check of heating and cooling.
- The walkthroughRemote, modes, filters: we show you the essentials before we leave.
And at your place?
Two quick checks with real numbers: what heat costs, and what your current heaters add up to in BTU/h.
Conversion: 1 W = 3.412 BTU/h. An indication, not a load calculation: baseboards and furnaces are often stronger than the real need, and they can stay as backup. AirGreen confirms the capacity on site.
What to do, season by season
Three habits per season for this unit. They take a few minutes and prevent many calls.
- Clean the indoor unit's filters.
- Clear leaves and debris left on the outdoor unit by winter.
- Test cooling before the first hot days.
- Clean the filters more often when the unit runs a lot.
- Keep plants away from the outdoor unit.
- Check that no water drips from the indoor unit.
- Rake the leaves around the outdoor unit.
- Test heating before the first cold days.
- Book periodic maintenance before winter.
- Keep snow away from the stand and the front of the unit.
- Let the unit defrost: it is normal.
- Never hit the ice on the fins; call us if the unit stays iced up.
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What people ask us about this kind of work
Does a wall-mounted heat pump heat in winter?
Wall-mounted or multi-zone: how do I choose?
Where does the outdoor unit go?
Are there grants?
Do I need a permit?
How cold can it heat?
How much can I save?
How is the LogisVert assistance calculated?
Is it noisy?
The outdoor unit is covered in ice: is that normal?
Does AirGreen hold the required licences?
Is the estimate free?
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Text and photo: a real AirGreen Climatisation & Chauffage job. The diagrams are generic illustrations of the type of installation, not a survey of this job site. Sources of the added figures: airgreen.ca product pages (NEEP / AHRI performance), Hydro-Québec (Heat pumps page, LogisVert, read on 13 October 2026), Régie de l’énergie (rate D as of 1 April 2026).