Installation of a FUJITSU ORION XLTH+ 15,000 BTU wall-mounted heat pump in LaSalle
In LaSalle, AirGreen installs a FUJITSU ORION XLTH+ 15,000 BTU wall-mounted heat pump in a confined space above a door, with heating down to -30 °C and eligible for a LogisVert grant.
Take a tour of the installation
Each number is a point we check on site. Switch between summer and winter to watch air and heat move.
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 compact installation in a restricted space, above a balcony door
In this apartment in LaSalle, our AirGreen team carried out a particularly delicate HVAC installation: a Fujitsu Airstage ORION XLTH+ 15,000 BTU wall-mounted heat pump, installed in a very limited space, just above an interior door leading to a glazed area and a balcony. This type of configuration requires precise planning, as every inch counts: available height, moldings, flap clearance, condensate drainage, refrigerant line routing, and final aesthetics.
The client's objective was clear: to obtain a reliable heating and air conditioning system without sacrificing already limited wall space. The chosen model, the FUJITSU ORION XLTH+ 15,000 BTU, perfectly meets the needs of a Montreal dwelling: heating down to -30 °C, high efficiency, quiet operation, Wi-Fi included, and eligibility for the LogisVert grant.
Why this model was suitable for this installation in LaSalle
The FUJITSU ORION XLTH+ 15,000 BTU is an excellent option for homes where a wall-mounted heat pump, mini-split, and wall-mounted air conditioner are to be combined into a single four-season solution.
Its important features:
- Cooling capacity: 15,000 BTU
- Heating down to -30 °C
- R-32 Refrigerant
- SEER2: 28.7
- HSPF2: 13.0
- ENERGY STAR®: Yes
- ENERGY STAR® Cold Climate: Yes
- Wi-Fi included
- Indoor sound level: 26 to 46 dB(A)
- Piping: 1/4 – 3/8 in
- LogisVert grant: up to $1,296 for eligible projects
In areas like LaSalle, where there are many duplexes, triplexes, condos, and apartments with architectural constraints, this type of unit becomes very interesting: powerful, compact, discreet, and capable of reducing reliance on electric baseboards for much of the winter.
Installation above a door: the real challenges of the site
The photo clearly shows the specificity of the project: the indoor unit is positioned very high, above an opening, between two closely spaced walls, with ceiling moldings and an already sensitive wall finish area. This is not a standard installation on a large, free wall.
Our technicians had to pay particular attention to several elements:
- leaving enough clearance for the air flap to open;
- avoiding any interference with the door;
- maintaining a clean appearance despite finishing constraints around the frame;
- ensuring a correct slope for condensate drainage;
- protecting refrigerant and electrical lines;
- positioning the unit to maximize air distribution in the room.
A common mistake in this type of installation is placing the unit too low or too close to the frame, which can hinder airflow, create vibrations, or make maintenance more difficult. At AirGreen, we always validate the actual clearance before final fixing, especially in homes in Montreal, Laval, Longueuil, the North Shore, and the South Shore, where older buildings often present unforeseen constraints.
An efficient solution for air conditioning and heating a Montreal home
The client wanted to improve their comfort in both summer and winter. The chosen location allows air to circulate to the main living area while limiting visual clutter. A well-positioned wall-mounted heat pump can make a big difference in an apartment: it reduces hot spots in summer, improves comfort in mid-season, and provides more uniform heat than electric baseboards used alone.
The FUJITSU ORION XLTH+ is particularly interesting for this type of need due to its Inverter technology. Instead of operating in sudden cycles, the unit modulates its power to maintain a stable temperature. The result: fewer variations, less noise, and a more natural sense of comfort.
Low-temperature heating: a major advantage in Quebec
In LaSalle, as elsewhere in Greater Montreal, winters require significant heating capacity. The FUJITSU ORION XLTH+ 15,000 BTU is designed to operate down to -30 °C, making it a serious choice for homeowners who want a reliable system, not just an air conditioner used occasionally.
Its heating performance is one of the elements that justifies its high-end positioning. For many clients, this performance helps reduce the use of electric baseboards, especially when the unit is properly sized and installed.
A clean installation despite finishing constraints
In this project, the area around the unit showed signs of previous work and unfinished wall surfacing. This type of situation is common when HVAC installation integrates into an already renovated space or one undergoing adjustments. Our role is to install the equipment safely, functionally, and neatly, while respecting the limits of the existing building.
The unit was precisely aligned to maintain a balanced appearance in a narrow space. The final result is discreet: the Fujitsu indoor module integrates above the door without blocking passage, encroaching on the opening, or compromising air distribution.
What homeowners should remember before installing a wall-mounted heat pump
A mini-split installation is not just about mounting a unit on a wall. For a lasting result, you need to analyze:
- the wall structure;
- the distance between the indoor and outdoor units;
- drainage;
- access for maintenance;
- sound level;
- airflow direction;
- required power based on area and insulation;
- eligibility for subsidies;
- the quality of commissioning.
In this case, the choice of the 15,000 BTU allowed for a good performance reserve, without unnecessarily oversizing the unit. This is an important nuance: if too small, the system works constantly; if too large, it can create discomfort and less efficient cycles. Sizing remains one of the most important steps in a successful HVAC project.
A Fujitsu wall-mounted heat pump methodically installed by AirGreen
Our approach to this type of project
At AirGreen, we approach every installation with a simple logic: choose the right equipment, install it cleanly, verify its operation, then explain to the client how to use it efficiently. For this installation in LaSalle, our technicians took the time to validate the location, clearances, fastening, line routing, and commissioning.
A professional installation includes, in particular:
- controlled drilling to the outside;
- secure fastening of the indoor unit;
- connection of refrigerant lines;
- vacuuming;
- leak checks;
- compliant electrical connection;
- testing in cooling and heating;
- explaining operation to the client.
These steps are essential to protect the system's performance, especially with an R-32 unit like the FUJITSU ORION XLTH+.
Why AirGreen often recommends Fujitsu for demanding projects
Fujitsu is a brand we regularly install in Greater Montreal, particularly in Montreal, LaSalle, Laval, Longueuil, on the North Shore, and the South Shore. The ORION XLTH+ series is appreciated for its extreme cold performance, quietness, and reliability.
In homes where space is limited, unit width, airflow direction, and modulation quality become important criteria. The model installed here offers a good balance of power, comfort, and discretion.
Mistakes to avoid in a similar installation
For homeowners considering a wall-mounted heat pump in a tight space like this, here are the main mistakes to avoid:
- choosing the location based solely on appearance, without considering airflow;
- ignoring the drainage slope;
- installing the unit too close to the ceiling or a molding;
- underestimating the necessary heating power;
- neglecting access for maintenance;
- choosing a model ineligible for subsidies;
- entrusting the installation to a team unfamiliar with the constraints of Quebec's climate.
A poorly planned installation can lead to noise, water leaks, poor air distribution, or disappointing performance. A well-thought-out installation, like the one carried out here in LaSalle, on the other hand, provides stable and lasting comfort.
Four-season comfort in an urban space
This achievement perfectly illustrates what many Montreal homeowners are looking for: a compact, efficient, quiet solution adapted to the local climate. The wall-mounted air conditioner also becomes a true source of heating, capable of operating during cold periods, while offering efficient air conditioning in summer.
For an apartment, a condo, a duplex, or a small commercial space, a Fujitsu ORION XLTH+ 15,000 BTU wall-mounted heat pump can represent an excellent investment, especially when the installation is eligible for the LogisVert grant.
Why this installation in LaSalle is a good example of a successful project
This project demonstrates that an architectural constraint does not prevent a quality installation. On the contrary, it requires better preparation. The space available above the door was limited but sufficient for a professional installation. The choice of model, the precision of the installation, and rigorous commissioning allowed the client to obtain a high-performance system without heavily modifying the interior layout.
It is precisely this type of project that reflects our work at AirGreen: adapting the HVAC solution to the actual building, and not forcing a standard installation into a space that is not suitable for it.
Conclusion
The installation of this FUJITSU ORION XLTH+ 15,000 BTU wall-mounted heat pump in LaSalle shows the importance of proper sizing, thoughtful placement, and careful technical execution. Thanks to its heating performance down to -30 °C, its high energy efficiency, quiet operation, integrated Wi-Fi, and potential eligibility for the LogisVert grant, this model is a very relevant option for homeowners in Greater Montreal.
For an HVAC installation in Montreal, Laval, Longueuil, on the North Shore, or the South Shore, AirGreen supports its clients with a professional, transparent approach adapted to each building.
The big day, step by step
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.
What would it look like 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.
Four mistakes we do not make
Flip each card to see what we do instead.
Your own project, step by step
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.
Is your home ready?
Check what applies at your place. A "no" is not a refusal: it is what we sort out during the estimate.
Four statements: true or false?
It all comes down to details you have just seen.
1. In heating mode, the outdoor unit can produce water.
During defrost cycles. That water must drain away without forming ice.
2. You pick the capacity with a simple square-footage rule.
Windows, insulation, orientation and how the room is used all count. Capacity is chosen on site.
3. A multi-zone connects several indoor heads to a single condenser.
One head per room, all on the same condenser. Each room keeps its own temperature.
4. The disconnect can sit behind the patio furniture.
It must stay accessible: it is what shuts the unit off for service.
0 / 4 right answers
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?
No question matches. Write to us: we answer.
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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).