Installation of a Fujitsu AIRSTAGE Orion XLTH wall-mounted heat pump in Rigaud, in Montérégie
Fujitsu AIRSTAGE Orion XLTH wall-mounted heat pump installed in Rigaud: a compact, neatly finished HVAC installation with Inverter technology, R-32, built-in Wi-Fi, and heating designed for Quebec’s cold climate.
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 Fujitsu installation in Rigaud where indoor unit placement makes all the difference
In this residence in Rigaud, we installed a Fujitsu AIRSTAGE Orion XLTH wall-mounted heat pump, a range designed to provide both cooling and heating in Quebec’s demanding winter conditions. In this installation, one feature immediately stands out: the indoor unit was positioned very high on the wall, near the ceiling, close to the side wall and window.
This type of location appears simple when looking at the final result. In reality, it requires precise preparation. The available space, airflow, refrigerant line routing, condensate drainage, future access for maintenance, and the visual integration of the heat pump into the room must all be considered.
The photograph clearly shows the desired result: a discreet white Fujitsu wall-mounted unit, cleanly integrated without unnecessarily occupying the wall. The elevated positioning also preserves usable space below the unit while promoting good air distribution throughout the room.
The technical documentation provided for the range confirms that the AIRSTAGE Orion XLTH, also presented as the Orion CTEB series, is available in several capacities and uses R-32 refrigerant. Fujitsu indicates heating operation down to -26 °C (-15 °F) for models in this series.
A wall location selected based on the room, not just aesthetics
During a wall-mounted heat pump installation in Rigaud, selecting the wall is an important part of the work. An indoor unit should not simply be placed wherever it “fits.” We need to consider what will happen when the fan operates several hours a day, in both cooling and heating modes.
In this room, the unit is installed near a corner, with a window on the adjacent wall. This configuration requires, among other things, consideration of the airflow path. The goal is to prevent a significant portion of the conditioned air from being directed immediately toward an obstacle, while still allowing the unit to treat the room’s volume effectively.
The result visible in the photo is particularly compact: the heat pump occupies the upper part of the wall and leaves a large open area below. This approach can be especially interesting when the interior layout limits the possible locations for a wall-mounted air conditioner or ductless heat pump.
An installation very close to the ceiling requires greater precision
Wall-mounted units are often installed high up, but the more limited the available space, the more important taking accurate measurements becomes.
In particular, we must plan for:
- the space required around the unit for its operation and maintenance;
- the ability to open the front panel properly;
- access to the filters;
- the routing of the refrigerant lines;
- the condensate drain connection;
- the communication cable and power supply appropriate for the system;
- the proper drainage slope when the drain operates by gravity;
- the airflow direction to achieve comfortable air distribution;
- precise alignment so that the installation remains visually neat.
A successful installation must remain practical for many years after commissioning. Being able to remove the filters, inspect the heat exchanger, and carry out HVAC maintenance without unnecessarily dismantling the immediate surroundings of the unit is part of this consideration.
Fujitsu Orion XLTH: a heat pump designed for cold-climate heating
For a residence located in Rigaud, winter performance is obviously a major consideration. The Fujitsu technical data sheet indicates a heating operating range of -26 °C to 24 °C for the five capacities presented in this series.
The range includes the 09KZAH1, 12KZAH1, 15KZAH1, 18KZAH1, and 24KZAH1 models. Their nominal cooling capacity ranges from 9,000 to 22,000 BTU/h, while their nominal heating capacity ranges from 12,000 to 25,200 BTU/h.
It is important to clarify that the photograph alone cannot confirm with certainty the exact BTU capacity of the unit installed in Rigaud. To identify a precise capacity, we rely on the model number or rating plate rather than the unit’s exterior appearance.
This distinction is important because an oversized or undersized heat pump can compromise comfort. The choice should not be made simply according to the area stated in an advertisement. Insulation, windows, sun exposure, room layout, ceiling height, and the building’s heat loss must also be considered.
High energy performance according to the selected capacity
The Fujitsu documentation shows particularly interesting TRÈS2 values for this series:
| Series model | Rated cooling | Rated heating | TRÈS2 |
|---|---|---|---|
| 09KZAH1 | 9,000 BTU/h | 12,000 BTU/h | 33,1 |
| 12KZAH1 | 12,000 BTU/h | 16,000 BTU/h | 30,5 |
| 15KZAH1 | 14,500 BTU/h | 18,000 BTU/h | 27,5 |
| 18KZAH1 | 18,000 BTU/h | 21,600 BTU/h | 25,5 |
| 24KZAH1 | 22,000 BTU/h | 25,200 BTU/h | 24,0 |
These figures also show why models with equivalent capacity must be compared. An efficiency rating should not be analyzed in isolation: above all, the heat pump must match the building's actual load.
The Fujitsu documentation also lists the ENERGY STAR, ENERGY STAR Cold Climate, and ENERGY STAR Most Efficient classifications for the models presented in this documentation.
For homeowners evaluating rebates available for a heat pump in Quebec, it remains necessary to verify the exact model, the indoor/outdoor combination, the applicable references, and the program criteria in effect when the work is carried out. Belonging to a high-performance product line does not replace administrative validation of the specific system installed.
Inverter technology adapted to load variations
The Orion XLTH uses an inverter compressor. Unlike operation limited to a succession of full-power starts and stops, inverter technology allows the system to modulate its capacity according to demand.
In everyday use, this modulation is intended to maintain a more consistent temperature and adjust consumption to the room's actual needs. Fujitsu also highlights the speed of temperature adjustment and the maintenance of consistent comfort thanks to this technology.
For homeowners in Rigaud, as well as in Montreal, Laval, Longueuil, the North Shore, and the South Shore, this feature is particularly relevant, since a home's heating load can vary enormously between a cool autumn evening and a sustained period of winter cold.
R-32: the refrigerant used by this new Fujitsu generation
The series presented in the documentation operates with R-32. Fujitsu indicates a global warming potential of 675 for this refrigerant, compared with 2,088 for R-410A in the graph shown on page 2 of the brochure—an announced reduction of 68% in GWP.
For a modern installation, this information also affects work procedures. The equipment, installation methods, and commissioning practices must correspond to the refrigerant specified by the manufacturer.
Therefore, you should never assume that a new heat pump can simply retain all the characteristics of an old system without verification. The piping dimensions, permitted line length, and installed model must be confirmed.
Piping dimensions vary by capacity
This is a technical detail that is often overlooked when replacing an older heat pump. In the Fujitsu Orion XLTH series presented here, not all capacities use the same connections.
The 09K and 12K models use a 1/4 in liquid line and a 3/8 in gas line. The 15K model retains the 1/4 in liquid line but uses a 1/2 in gas line. The 18K and 24K versions use 3/8 in liquid and 5/8 in gas lines.
This explains why replacing an existing heat pump should begin with an inspection of the current system. Piping already installed in the building is not automatically compatible with the new unit simply because both appliances are wall-mounted heat pumps.
Piping lengths that provide some installation flexibility
The technical specifications also indicate the maximum permitted lengths:
- up to 25 m (82 ft) for the 09K and 12K versions;
- up to 30 m (98 ft) for the 15K version;
- up to 50 m (164 ft) for the 18K and 24K versions.
This flexibility can be useful in installations where the outdoor unit cannot be positioned directly behind the indoor unit. However, this does not mean that a long refrigerant line is always desirable. When we can optimize the route, we generally aim for an installation that is logical, accessible, and clean.
Why this installation in Rigaud reflects our approach at AirGreen
A discreet finish inside the home
The result visible in the photo effectively sums up an essential aspect of our work: a good HVAC installation should operate efficiently without becoming the dominant element in the room.
The Fujitsu unit is installed high on a light-colored wall. Its white casing blends naturally into the space and does not compromise either the window on the right or the main area available for furnishings.
The installation is particularly interesting because it shows that a compact location does not necessarily prevent a clean installation. The configuration simply needs to be assessed properly before work begins.
The indoor sound level can drop as low as 23 dB depending on the capacity
Acoustic comfort matters greatly for a heat pump installed in a bedroom, living room, or space occupied for long periods.
According to the Fujitsu technical sheet, quiet mode reaches 23 dB(A) on the 09K and 12K models, 26 dB(A) on the 15K, and 30 dB(A) on the 18K and 24K versions. The specified outdoor sound levels range from 46 to 50 dB(A), depending on the model and operating mode.
Acoustics also depend on the installation itself. High-performance equipment can become disruptive if it is mounted on a structure that easily transmits vibrations or if the outdoor unit is poorly located. The choice of machine and the quality of the installation must therefore be considered together.
Power supply: 208 to 230 V according to Fujitsu specifications
All models in this series listed in the technical sheet operate on a 208 to 230 V, 60 Hz, single-phase power supply.
The specified circuit breaker is 15 A for the 09K and 12K versions and 20 A for the 15K, 18K, and 24K versions.
This is precisely the type of information that must be confirmed before an installation or replacement. The capacity available in the electrical panel, the existing circuit, and the exact equipment specifications must be validated so that the installation is carried out according to the applicable requirements.
A compact indoor unit, especially in the lower capacities
The technical sheet also provides the precise dimensions of the indoor units. The 09K, 12K, and 15K versions measure approximately 11 in. high, 38 9/16 in. wide, and 9 7/16 in. deep. The 18K and 24K models are larger, measuring approximately 13 3/8 in. high, 45 1/4 in. wide, and 11 in. deep.
These dimensions show why we always check the space actually available before definitively selecting a capacity and location. A few inches can determine whether a heat pump fits neatly above a door, near a window, or in a limited section of wall.
In the project photographed in Rigaud, the environment around the unit makes this question particularly relevant.
ProCore coils, built-in Wi-Fi, and remote control
The Orion XLTH documentation also mentions ProCore copper coils, designed to provide increased corrosion resistance.
The control platform includes built-in Wi-Fi connectivity, with remote monitoring through the AIRSTAGE mobile app. Several optional controllers and interfaces are also indicated, including wired controllers and solutions enabling BACnet or Modbus integration for certain applications.
For a residence, Wi-Fi is mainly useful for changing the temperature remotely or adjusting operation without having to be in front of the unit. For more complex projects or certain commercial buildings, the integration possibilities may become even more important.
Mistakes we seek to avoid during a wall-mounted installation
A quality heat pump cannot compensate for a poorly planned installation.
Among the problems we want to avoid are incorrect sizing, inadequate condensate drainage, piping that is incompatible with the selected model, a location that restricts airflow, an installation that makes maintenance difficult, or an electrical supply selected without considering the manufacturer's specifications.
It is also important to avoid choosing a capacity solely because it is larger. In an Inverter system, modulation is important, but proper HVAC sizing remains essential to operating quality.
What Rigaud homeowners can take away from this installation
This Fujitsu Orion XLTH heat pump installation in Rigaud shows that a successful project depends as much on installation details as on the equipment itself.
The series offers several interesting technical features: heating down to -26 °C, Inverter technology, R-32 refrigerant, built-in Wi-Fi, ENERGY STAR performance ratings indicated by Fujitsu, quiet indoor operation, and several capacities that allow the system to be adapted to the building.
But the final result also depends on how the unit is integrated into the home.
At AirGreen, we approach our wall-mounted heat pump installations in Rigaud, Montreal, Laval, Longueuil, the North Shore, and the South Shore by considering the required capacity, room layout, indoor location, refrigerant line routing, drainage, electrical supply, accessibility for maintenance, and quality of finish together.
In this Rigaud installation, the photo shows precisely what we aim to achieve: a wall-mounted unit positioned in a compact, clean, and discreet manner while preserving the available living space. Behind this apparent simplicity are the technical decisions that determine the quality of a true professional HVAC installation.
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.
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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?
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).