Installation of a FUJITSU ORION XLTH+ 15,000 BTU wall-mounted heat pump in Dorval
AirGreen installs a FUJITSU ORION XLTH+ 15,000 BTU wall-mounted heat pump in Dorval in a tight technical space, with clean finish, winter performance, and LogisVert eligibility.
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.
A Fujitsu Wall-Mounted Installation in a Tight Technical Space in Dorval
In Dorval, our AirGreen team completed a demanding HVAC installation of a FUJITSU ORION XLTH+ 15,000 BTU wall-mounted heat pump, a model known for its cold-weather heating performance, quiet operation, and eligibility for the LogisVert subsidy.
This project was unique from the outset: the indoor unit had to be installed in a confined space, near a suspended ceiling, ducts, wiring, network equipment, and an already busy mechanical passage. In this type of configuration, a mini-split installation is never just about attaching a unit to the wall. It requires consideration for clearance, drainage, refrigerant line routing, future access for maintenance, visual finish, and overall safety.
The client was looking for a reliable solution to improve their four-season comfort, with a machine capable of efficiently heating in winter and quickly cooling in summer. The choice fell on the FUJITSU ORION XLTH+ 15,000 BTU, a wall-mounted heat pump using R-32 refrigerant, designed for Quebec winters and suitable for residential buildings in Dorval, Montreal, Laval, Longueuil, the North Shore, and the South Shore.
Why the FUJITSU ORION XLTH+ 15,000 BTU was the right choice
The installed model offers a very attractive combination for an owner who wants to invest in a durable solution:
- Cooling capacity: 15,000 BTU
- Heating down to -30 °C
- SEER2: 28.7
- HSPF2: 13.0
- ENERGY STAR®: yes
- ENERGY STAR® Cold Climate: yes
- Refrigerant: R-32
- Wi-Fi included
- Indoor sound level: 26 to 46 dB(A)
- Outdoor sound level: 51 dB(A)
- Piping: 1/4 – 3/8 in
- Voltage: 220 V
- LogisVert provincial subsidy: up to $1,296 depending on eligibility
In a house or condo in Dorval, this type of wall-mounted heat pump is particularly relevant when you want to reduce the use of electric baseboards, improve comfort in an open area, or replace an older, less efficient wall-mounted air conditioner.
A significant constraint: the space around the indoor unit
The image of this installation clearly shows the main challenge: the Fujitsu indoor unit is placed under a suspended ceiling, with an open technical area to the right. Several mechanical and electrical elements are visible nearby, which required precise planning.
Our refrigeration technicians had to check:
- the clearance above the unit to allow for good air intake;
- the exit angle of the refrigerant lines;
- the passage of the condensate drain;
- the protection of pipes in an already congested environment;
- future access to the filter, front panel, and internal components;
- the stability of the unit on a wall with little room for error.
In this type of project, an error of a few centimeters can complicate maintenance, create a drainage problem, or make the finish much less clean. At AirGreen, we take the time to validate these details before drilling, connecting, or closing anything.
The routing of refrigerant lines and the drain
One of the most sensitive aspects of a mini-split installation is line routing. Here, the refrigeration pipes and the condensate drain had to exit neatly from the right side of the unit, avoiding existing obstacles.
We worked with a simple approach: keep the route as short, accessible, and clean as possible. The drain had to maintain a functional slope to prevent any water backflow into the indoor unit. The refrigerant lines, for their part, had to be protected and positioned without excessive tension.
A good installation is not only visible in the final result. It is measured primarily in the invisible details: proper vacuuming, tightly sealed connections, adequate insulation, tested drainage, and complete startup before leaving the premises.
Why R-32 is a tangible advantage
The FUJITSU ORION XLTH+ 15,000 BTU operates with R-32 refrigerant, a new generation of gas used in several high-performance HVAC systems. For the client, this means better energy efficiency and more modern technology than older R-410A systems.
During installation, this type of machine requires rigorous execution. Vacuuming, pressurization, connection verification, and commissioning must be done according to best practices. This is precisely where the experience of a specialized HVAC contractor makes a difference.
A quiet unit for discreet comfort
In this project in Dorval, sound level was an important criterion. The indoor unit of the Fujitsu Orion XLTH+ can go down to approximately 26 dB(A) in silent mode, allowing for comfortable use in a living room, office, finished basement, or multi-functional area.
The heat pump must not only heat or cool. It must do so without disturbing daily life. This is one of the reasons why this model is often chosen for residential installations in Greater Montreal.
Winter performance adapted to Dorval's climate
Dorval is exposed to very real winter conditions: winds, freezing periods, thaws, humidity, snow, and low temperatures. A standard heat pump can quickly reach its limits if it is not designed for the cold.
The FUJITSU ORION XLTH+ is designed to maintain heating performance down to -30 °C. For an owner, this means:
- less reliance on electric baseboards;
- more uniform heat;
- better temperature stability;
- better controlled consumption;
- superior comfort during extreme cold.
Mistakes to avoid in a similar installation
This project illustrates several points that owners should always check before choosing an installer:
- never install a wall unit too close to the ceiling without validating air intake;
- avoid poorly sloped or excessively long drains;
- do not trap refrigerant lines behind hard-to-reach equipment;
- plan for future maintenance from the time of installation;
- choose a power output adapted to the room, not just the area;
- confirm eligibility for subsidies before finalizing the project.
A high-end appliance can yield average results if the installation is poorly conceived. Conversely, a meticulous installation allows the machine to reach its full potential.
An AirGreen achievement designed for performance, cleanliness, and future maintenance
At AirGreen, we install wall-mounted heat pumps, mini-splits, and wall-mounted air conditioners in a wide variety of contexts: single-family homes, condos, duplexes, triplexes, businesses, offices, and more complex technical spaces like this one.
For this installation in Dorval, our objective was clear: to deliver a high-performance, clean, safe, and easy-to-maintain system. The client now benefits from a reliable, quiet, efficient Fujitsu unit perfectly adapted to the Quebec climate.
Why choose AirGreen for a Fujitsu installation in Dorval
Our team is very familiar with the constraints of buildings in Greater Montreal. Whether in Dorval, Montreal, Laval, Longueuil, on the North Shore or the South Shore, each installation requires a different analysis.
We offer:
- thorough sizing according to the building's configuration;
- experienced refrigeration technicians;
- clean installation with respect for clearances;
- special attention to drainage and refrigerant lines;
- a complete startup verification;
- support for applicable subsidies;
- accessible after-sales service.
Conclusion
This installation of a FUJITSU ORION XLTH+ 15,000 BTU wall-mounted heat pump in Dorval clearly demonstrates the importance of a professional approach in a confined technical space. The final result offers the client four-season comfort, excellent energy efficiency, reliable winter performance, and a neat finish despite the building's constraints.
For an owner seeking a durable HVAC installation in Dorval or elsewhere in the Greater Montreal area, this Fujitsu model represents a solid choice, especially when the installation is carried out with precision.
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
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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).