Installation of a FUJITSU ORION XLTH+ 15,000 BTU wall-mounted heat pump in Châteauguay
AirGreen Installation in Châteauguay of a Fujitsu Orion XLTH+ 15,000 BTU wall-mounted heat pump. High-performance HVAC solution, heating down to -30°C, ideal for Montreal and the South Shore with LogisVert subsidy.
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.
Strategic Installation Above a Door: Maximizing Space Without Compromising Performance
At AirGreen, every HVAC installation presents its unique challenges. In Châteauguay, we recently completed a particularly interesting project: the installation of a FUJITSU ORION XLTH+ 15,000 BTU wall-mounted heat pump in a configuration where available space dictated precise technical choices.
The indoor unit was installed directly above an exterior door, in a room with tiled walls. This configuration, often perceived as complex, was optimized thanks to our field expertise to ensure homogeneous air distribution, maximum energy efficiency, and clean aesthetic integration.
Why this heat pump choice was ideal for this home in Châteauguay
Perfectly adapted power
The FUJITSU ORION XLTH+ 15,000 BTU model was selected after a comprehensive analysis of the client's needs. In this residence:
- Semi-open living area
- Average insulation typical of many homes on the South Shore
- Need for efficient heating in winter
- Effective air conditioning in summer
With its heating capacity down to -30 °C, this heat pump perfectly meets the climatic realities of Châteauguay, Montreal, Laval, and Longueuil.
Exceptional energy performance
This model offers:
- SEER2: 28.7
- HSPF2: 13.0
- Refrigerant R-32 (more ecological and efficient)
Concretely, this means a significant reduction in energy costs, especially when replacing electric baseboard heaters.
LogisVert subsidy applicable
The client benefits from a subsidy of up to $1,296, which makes this investment even more advantageous.
Technical challenges encountered on this project
Installation above an exterior door
Installing a wall unit above a door presents several challenges:
- Limited height between the door frame and the ceiling
- Need for sufficient clearance for air circulation
- Precise management of the blowing angle
Our team adjusted the installation to guarantee:
- Air diffusion directed towards the main room
- No direct draft towards the entrance
- Uniform thermal comfort
Ceramic wall: precision and expertise required
The wall on which the unit was installed was entirely covered with ceramic tiles. This implies:
- Delicate drilling to avoid cracks
- Reinforced fixings
- Perfect alignment for a professional finish
Our experienced refrigeration technicians used specialized techniques to ensure a solid and durable installation, without compromising the integrity of the wall.
Duct passage and aesthetics
In this type of installation:
- Ducts must be discreet
- Condensate drainage must be perfectly managed
- The whole must remain visually clean
We integrated an optimized piping route with a neat finish, respecting AirGreen's high aesthetic standards.
Key steps of HVAC installation
1. Analysis and planning
Before any installation:
- Complete thermal evaluation
- Choice of optimal location
- Verification of structural constraints
2. Indoor unit installation
- Secure fastening to the ceramic wall
- Precise leveling
- Adjustment of louvers for optimal diffusion
3. Outdoor unit installation
- Strategic positioning to reduce noise
- Installation on a stable support
- Preparation for winter conditions (drainage, defrosting)
4. Refrigerant connections
- Piping 1/4 – 3/8
- Complete vacuum pull
- Rigorous leak tests
5. Commissioning
- Performance verification
- Wi-Fi configuration
- Full explanation to the client
Final result: comfort and performance delivered
After installation:
- Stable temperature throughout the room
- Immediate reduction in electrical heating needs
- Quiet operation (26 dB indoors)
The client particularly appreciated:
- The extremely low noise level
- The speed of heating
- Remote control via Wi-Fi
Practical tips for a similar installation
Don't underestimate the location
Installing above a door can be an excellent solution if:
- The air is well directed
- There is sufficient space
- The installation is done by professionals
Be careful with ceramic walls
This type of surface requires:
- Specialized tools
- Great precision
- Real expertise in HVAC installation
Always size correctly
An incorrectly sized heat pump can:
- Overconsume energy
- Heat inefficiently
- Reduce its lifespan
At AirGreen, every project is precisely calculated.
Why trust AirGreen in Châteauguay and on the South Shore
Our approach is distinguished by:
- In-depth expertise in wall-mounted heat pumps
- Real knowledge of buildings in Montreal, Laval, Longueuil, North Shore, and South Shore
- Clean, durable, and high-performance installations
- Comprehensive support, before and after installation
We don't just install machines: we design solutions tailored to each home.
Conclusion: a smart installation in a constrained space
This project in Châteauguay demonstrates that a complex installation can become an optimal solution when well-conceived.
The FUJITSU ORION XLTH+ 15,000 BTU proves to be a strategic choice here:
- Reliable heating even in extreme cold
- Efficient air conditioning
- Reduced consumption
- Quiet comfort
Even in an atypical configuration like an installation above a door on a ceramic wall, professional execution yields an impeccable result.
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).