Installation of a FUJITSU ORION XLTH KZAH R-32 18,000 BTU wall-mounted heat pump in Duvernay, Laval
In Duvernay, AirGreen installs a FUJITSU ORION XLTH 18,000 BTU R-32 wall-mounted heat pump, eligible for LogisVert, quiet, efficient, and suitable for Laval winters.
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The job on one screen
The unit’s data sheet
The range as published on airgreen.ca: pick a size to see its capacity in deep cold.
| Size | Heating at −8 °C | Heating at −15 °C | Coldest certified point | COP at −15 °C | SEER | HSPF | Indicative LogisVert aid |
|---|---|---|---|---|---|---|---|
| Fujitsu Orion XLTH 9 000 | 7,500 | 15,400 | −26 °C: 11,400 | 2.26 | 33.1 | 13.3 | – |
| Fujitsu Orion XLTH 12 000 | 10,000 | 16,600 | −26 °C: 12,200 | 2.16 | 30.5 | 12.7 | $1,200 |
| Fujitsu Orion XLTH 15 000 | 11,400 | 21,000 | −26 °C: 16,400 | 2.1 | 27.5 | 12.7 | $1,368 |
| Fujitsu Orion XLTH 18 000 | 13,600 | 24,800 | −26 °C: 19,110 | 2.08 | 25.5 | 12.5 | $1,632 |
| Fujitsu Orion XLTH 24 000 | 15,900 | 25,200 | −26 °C: 19,110 | 2.14 | 24.0 | 11.9 | $1,908 |
According to NEEP, it delivers up to 11,400 BTU/h at −26 °C (−15 °F), more than its 9,000 BTU cooling rating. Its efficiency there is still 1.70.
According to NEEP, its COP at −15 °C is 2.26: the highest of the Orion XLTH line, which ranges from 2.08 to 2.16 at that temperature.
At 8 °C, its certified maximum capacity reaches 23,000 BTU/h, more than double its nominal size.
According to NEEP, it delivers up to 12,200 BTU/h at −26 °C (−15 °F), more than its 12,000 BTU cooling rating. Its efficiency there is still 1.81.
At 8 °C, its certified maximum capacity reaches 23,600 BTU/h, 97% more than its nominal 12,000 BTU size.
At −26 °C, its certified minimum capacity is 1,400 BTU/h (3,500 at 8 °C). It slows down instead of cycling on and off.
According to NEEP, it delivers up to 16,400 BTU/h at −26 °C (−15 °F), more than its 15,000 BTU cooling rating. Its efficiency there is still 1.92.
According to NEEP, its COP at −26 °C is 1.92: the highest of the Orion XLTH line, which ranges from 1.65 to 1.81 at that temperature.
At 8 °C, its certified maximum capacity reaches 25,000 BTU/h, 67% more than its nominal 15,000 BTU size.
According to NEEP, it delivers up to 19,110 BTU/h at −26 °C (−15 °F), more than its 18,000 BTU cooling rating. Its efficiency there is still 1.65.
At 8 °C, its certified maximum capacity reaches 31,800 BTU/h, 77% more than its nominal 18,000 BTU size.
According to NEEP, its certified heating capacity at −15 °C (5 °F) is 24,800 BTU/h, 138% of its nominal 18,000 BTU size. Its COP there is 2.08.
According to NEEP, its certified maximum capacity at −26 °C (−15 °F) is 19,110 BTU/h, 80% of its nominal 24,000 BTU size.
At 8 °C, its certified maximum capacity reaches 36,800 BTU/h, 53% more than its nominal 24,000 BTU size.
At −26 °C, its certified minimum capacity is 3,540 BTU/h (8,200 at 8 °C). It slows down instead of cycling on and off.
Data read live from the airgreen.ca page of each size (NEEP / AHRI certified performance). When the title names the installed size, it is highlighted; otherwise the whole range is shown. The aid shown is today’s, using Hydro-Québec’s rule ($120 per 1,000 BTU/h at −8 °C); amounts quoted in the article date from its publication. Only Hydro-Québec confirms the assistance granted.A dash in the aid column: amount to be confirmed for this model.
The article, chapter by chapter
A Compact, Clean, and High-Performance Installation for a Duvernay Home
In Duvernay, a residential area of Laval where homes often have quite tight exterior configurations, our AirGreen team recently installed a FUJITSU ORION XLTH KZAH R-32 18,000 BTU wall-mounted heat pump, a system renowned for its cold-weather heating performance, cooling efficiency, and quiet operation. This project perfectly illustrates what we frequently encounter in Greater Montreal: a homeowner who wishes to improve their indoor comfort without compromising the exterior appearance of their residence or the long-term reliability of the system.
The photo of this installation shows an important element: the outdoor unit was fixed directly onto wall brackets, above ground level, against a concrete foundation and under the exterior siding of the house. This choice is not insignificant. In Duvernay, as in several areas of Montreal, Longueuil, the North Shore, and the South Shore, winters bring snow, ice, humidity, and freeze-thaw cycles. Installing the outdoor unit on wall brackets protects it from ground snow accumulation, facilitates drainage during defrost cycles, and maintains cleaner access for future maintenance.
In this specific case, the client wanted to replace a less efficient heating and cooling solution with a more modern appliance, eligible for a subsidy, quiet, and capable of offering stable comfort in winter. The FUJITSU ORION XLTH 18,000 BTU wall-mounted heat pump met these criteria very well, thanks in particular to its heating capacity down to -26 °C, its R-32 refrigerant, its included WiFi, and its excellent energy performance.
Why the FUJITSU ORION XLTH 18,000 BTU was Perfect for this Installation
The choice of a wall-mounted heat pump should never be limited to brand or price. At AirGreen, we first analyze the building's configuration, the area to be treated, insulation, solar orientation, ceiling height, possible indoor unit location, piping route, available electrical capacity, and external constraints. In this Duvernay installation, the 18,000 BTU capacity was particularly well-suited to serve a large living area, with a real need for heating during the coldest months.
The FUJITSU ORION XLTH KZAH R-32 is a very popular model for Quebec residences, as it doesn't just effectively cool in summer. It is designed to offer serious heating performance, even when the outdoor temperature drops sharply. For a Laval homeowner who wants to reduce their reliance on electric baseboards or improve the comfort of a main floor, this capacity makes a tangible difference in daily life.
Technical Details of the Installed System
For this installation, the important model data are as follows:
- Brand: FUJITSU
- Indoor model: ASUH18KZAS
- Outdoor model: AOUH18KZAH1
- Machine type: wall-mounted heat pump, mini split, wall-mounted air conditioner
- Nominal power: 18,000 BTU
- Heating capacity down to: -26 °C
- Refrigerant: R-32
- AHRI: 215647921
- ENERGY STAR®: Yes
- ENERGY STAR® Cold Climate: Yes
- LogisVert Provincial Grant: $1,632, according to current criteria
- WiFi: Included
- Piping: 3/8 – 5/8 in
- Indoor sound level: 30 / 46 dB(A)
- Outdoor sound level: approx. 50 dB(A)
- Voltage: 220V
- MCA: 20A
- MOP: 20A
- Warranty: 12 years compressor, 12 years parts, labor according to available options
This information isn't just numbers on a spec sheet. It helps to understand why this model is relevant for a residential HVAC installation in Laval. An outdoor sound level of approximately 50 dB(A), for example, is an important point in a residential neighborhood where neighbors may be close. Low-temperature performance is equally essential to prevent a unit from being useful only in spring and autumn, but insufficient in January.
An Exterior Location Chosen for Durability
The outdoor unit visible in the photo is installed on a concrete foundation, with clearance allowing the fan to breathe adequately. We paid particular attention to alignment, level, bracket stability, and connection protection. Wall mounts reduce risks related to snow accumulation, but they must be installed precisely to avoid unnecessary vibrations and ensure an even distribution of the unit's weight.
In a wall-mounted heat pump installation, the positioning of the outdoor unit directly influences performance, longevity, and acoustic comfort. A poorly positioned unit can create vibrations, receive too much snow, suffer from poor drainage, or become difficult to access for maintenance. Here, we opted for a compact, clean, and functional solution, perfectly adapted to the existing wall and the yard's configuration.
The foundation already presented some visual irregularities, as seen in the photo. Our role was not just to attach a machine to a wall, but to ensure that the installation remains solid despite temperature variations, humidity, and the normal movements of a building throughout the seasons. The anchor points were therefore carefully selected, and the routing of the conduits was organized to limit mechanical stress on the refrigerant lines.
R-32: A More Modern Choice for New Installations
The R-32 refrigerant is an important component in this FUJITSU model. Compared to older generations of appliances using other refrigerants, R-32 is part of a more current approach in the HVAC industry, with better efficiency and reduced environmental impact compared to some older gases. For an owner investing in a new heat pump today, this detail matters.
At AirGreen, we are seeing more and more customers in Montreal, Laval, Longueuil, on the North Shore, and the South Shore asking specific questions about the type of refrigerant used, parts availability, expected appliance lifespan, and evolving standards. The FUJITSU ORION XLTH KZAH R-32 offers a solid answer to these concerns, as it combines recent technology with FUJITSU's reputation for reliability.
18,000 BTU Power Well-Suited for Open Areas
One of the common pitfalls when choosing a wall-mounted air conditioner or heat pump is selecting power that is too low or too high. An undersized unit will operate at full capacity too often and may not achieve the desired comfort during extreme temperatures. Conversely, an oversized unit can create short cycles, dehumidify less effectively, and offer a less consistent temperature.
In this Duvernay project, the 18,000 BTU power represented an excellent balance. It allows covering a large area without excessive capacity. The objective was to obtain a more stable temperature in the main rooms, for both heating and cooling, while benefiting from the unit's INVERTER modulation. This technology adjusts the compressor's operation according to actual demand, which helps reduce energy consumption and avoid sudden temperature variations.
Important Sound Comfort for Daily Life
Noise is often underestimated at the time of purchase, but it becomes a major criterion once the unit is installed. In a house, a system that is too noisy can disturb evenings, teleworking, sleep, or resting moments. The FUJITSU ORION XLTH 18,000 BTU offers an indoor sound level that can go down to around 30 dB(A), which is very discreet in a living room.
Outdoors, the sound level of approximately 50 dB(A) also contributes to good neighborly relations. In residential areas like Duvernay, Vimont, Laval-des-Rapides, or Sainte-Rose, side yards can be narrow and distances to neighboring properties limited. A good installation therefore involves not only respecting the manufacturer's technical requirements but also anticipating acoustic comfort in the real environment.
Challenges Faced During This Installation
Even when a project seems simple at first glance, a professional installation requires a series of precise decisions. On this site, the main points of attention concerned:
- the choice of an adequate height for the outdoor unit;
- solid fastening to an appropriate wall mount;
- clean and safe routing of refrigerant lines;
- protection of connections against humidity;
- sufficient clearance around the unit;
- visual integration of the installation against the existing building;
- preparation for future maintenance.
The FUJITSU unit visible in the photo was positioned to preserve access to service panels. This is an essential detail. During HVAC maintenance, pressure checks, diagnostics, or warranty interventions, the technician must be able to properly access the components. An installation that is too tight against an obstruction can complicate interventions and increase future costs.
Commissioning: An Essential Step, Not a Mere Formality
Once the mechanical installation is complete, our team always proceeds with full commissioning. This step includes checking refrigerant connections, leak testing, vacuum evacuation, electrical control, validating heating and cooling operation, and explaining the controls to the client.
For a FUJITSU wall-mounted heat pump, commissioning is particularly important to ensure the system operates according to expected parameters. A good unit poorly installed can yield poor results. Conversely, a quality unit installed methodically can offer remarkable performance for many years.
We also take the time to explain to the client how to use WiFi, how to adjust modes, how to avoid conflicting settings, and how to clean the indoor unit filters. These simple tips have a direct impact on comfort and system lifespan.
Practical Advice for Laval Homeowners
For homeowners considering an HVAC installation in Laval, a few points deserve particular attention before choosing a model:
Check the actually necessary power
The BTU number should not be chosen at random. Area, insulation, windows, sunlight, and interior configuration must be considered. An open space does not have the same needs as a compartmentalized dwelling.
Choose an accessible outdoor location
An outdoor unit must be protected, but also accessible. It must be able to breathe, defrost properly, and be easily maintained. Wall mounts are often an excellent solution in Quebec, but they must be installed solidly.
Consider subsidies from the outset
The LogisVert grant can represent a significant financial advantage, but it is necessary to ensure that the chosen model is eligible and that the required documents are properly prepared. In this project, the FUJITSU ORION XLTH 18,000 BTU showed a provincial grant of $1,632, subject to applicable criteria.
Do not neglect the sound level
Comfort is not limited to temperature. A quiet, well-positioned, and well-fixed appliance significantly improves the daily experience.
Have the appliance installed by a qualified team
A heat pump is a complete refrigeration system. The quality of vacuum evacuation, connections, drainage, wiring, and fastening directly influences reliability. A quick but approximate installation can lead to performance, noise, or durability issues.
What This Project Demonstrates About the AirGreen Approach
This installation in Duvernay reflects our way of working at AirGreen: we don't just aim to install a machine, but to deliver a complete solution. We analyze the building, the desired comfort, site constraints, electrical requirements, and subsidy possibilities. Then, we propose an adapted system, cleanly installed and clearly explained to the client.
Our teams regularly work in Montreal, Laval, Longueuil, on the North Shore and the South Shore, in a wide variety of contexts: single-family homes, condos, duplexes, multiplexes, commercial premises, and mixed-use buildings. This experience allows us to anticipate the details that make a difference: unit location, noise, drainage, aesthetics, service access, compliance, winter performance, and ease of use.
The FUJITSU ORION XLTH KZAH R-32 18,000 BTU is an excellent example of a unit that is well-suited to the Quebec climate when the project is properly evaluated. Its heating capacity down to -26°C, energy efficiency, quiet operation, and eligibility for a grant make it a very serious option for homeowners who want to modernize their comfort without compromising on quality.
Final result: a clean, stable, and winter-ready installation
The final result in Duvernay is a solidly installed, well-positioned wall-mounted heat pump, ready to provide reliable comfort in all seasons. In summer, the client will be able to enjoy efficient and quiet air conditioning. In winter, the system will be able to contribute to heating the house with performance adapted to Laval's low temperatures.
This installation also demonstrates the importance of careful execution. The wall brackets, unit alignment, clearances, line protection, and commissioning are all elements that are not always visible in a product sheet but determine long-term customer satisfaction.
For homeowners in Duvernay and the surrounding areas who are comparing wall-mounted heat pump options, the FUJITSU ORION XLTH 18,000 BTU is definitely worth considering, especially when installed by an experienced team that understands the realities of the Quebec climate and the specific characteristics of local residential buildings.
The job tools
Two quick checks with real numbers: what heat costs, and what your current heaters add up to in BTU/h.
Baseboards and electric furnaces turn 1 kWh of electricity into 1 kWh of heat. A heat pump delivers more: that is its COP. At Hydro-Québec’s rate D (11.142¢/kWh above 40 kWh a day, since 1 April 2026):
Hydro-Québec: a heat pump can be up to three times more efficient than baseboards for heating in the colder months.
Estimate per kWh of heat, at the chosen temperature, using the certified COP from the product page. Taxes, access charge and backup heat not included.
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.
How the job unfolds
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 we check on a job like this one
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.
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.
Good habits, once the unit is in place
Six simple habits that keep the unit going. Your list stays on this device.
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.
The right pages, at the right time
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).