Installation of a FUJITSU ORION XLTH+ 15,000 BTU wall-mounted heat pump in Ville-Marie, Montreal
Discover expert installation of a FUJITSU ORION XLTH+ 15,000 BTU wall-mounted heat pump in Ville-Marie. A high-performance, quiet HVAC solution eligible for grants in Montreal, Laval, and the South Shore.
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 HVAC Installation in the Heart of Ville-Marie: Maximum Comfort in a Confined Space
In downtown Montreal, in the dynamic district of Ville-Marie, every HVAC installation project presents unique challenges. At AirGreen, we recently installed a FUJITSU ORION XLTH+ 15,000 BTU wall-mounted heat pump in a typical Montreal apartment where space optimization, visual discretion, and thermal performance were essential.
Upon arrival, several elements caught our attention: a narrow load-bearing wall, immediate proximity to a ceiling light, and limited technical passage for piping. These constraints, common in downtown buildings, require a precise, experienced, and perfectly mastered approach.
Why the FUJITSU ORION XLTH+ Model Was the Ideal Choice
A Heat Pump Designed for Quebec's Climatic Realities
The choice of the FUJITSU ORION XLTH+ 15,000 BTU model is never insignificant. This system is specifically designed to cope with the extreme conditions in Quebec, particularly in Montreal, Laval, on the North Shore, and the South Shore.
Its technical characteristics are particularly well-suited:
- Heating capacity down to -30 °C
- Inverter technology for intelligent modulation
- R-32 refrigerant, more ecological and efficient
- High SEER2 (28.7) for ultra-efficient air conditioning
- Quiet operation (from 26 dB)
For this project in Ville-Marie, the client was looking for a system capable of effectively replacing electric baseboard heaters while providing reliable air conditioning during increasingly hot summers.
LogisVert Subsidy: A Concrete Financial Advantage
Another decisive factor in this project was eligibility for the Hydro-Québec LogisVert subsidy, which can amount to $1,296. This allows the client to significantly reduce their initial investment while opting for a high-end solution.
Site Analysis and Technical Challenges Encountered
A Complex Wall Configuration
The installation shown in the photo clearly illustrates a typical downtown reality:
- The indoor unit is installed very close to the ceiling
- A light fixture is located in immediate proximity
- An existing lateral wall outlet (old duct) had to be bypassed
- A discreet pipe cover was added on the right side to maintain aesthetics
These constraints require millimeter-perfect precision during installation.
Positioning Management for Optimal Air Distribution
Installing a wall-mounted heat pump is not just about attaching a unit to the wall. It's about ensuring that:
- Air flow is not blocked by the ceiling
- Air circulates efficiently throughout the room
- Noise remains minimal despite ceiling proximity
In this specific case, we adjusted:
- The angle of the louvers to maximize diffusion
- The installation height to meet standards while optimizing performance
- The orientation to avoid direct airflow on occupants
Detailed Steps of the HVAC Installation
1. Site Preparation and Protection
Before any intervention, our team:
- Protected surrounding surfaces
- Checked wall structures
- Confirmed the optimal location based on electrical and mechanical constraints
2. Drilling and Pipe Passage
We performed precise drilling to allow passage of:
- Refrigerant lines (1/4 – 3/8)
- The condensate drain
- Electrical wiring
Everything was carefully insulated to prevent any thermal loss.
3. Indoor Unit Installation
The FUJITSU unit was securely fastened, taking into account:
- Wall stability
- Ceiling proximity
- Aesthetic alignment with the room
4. Outdoor Unit Placement
Although not visible in the photo, the outdoor unit was strategically positioned:
- Away from high-traffic areas
- Protected against snow accumulation
- Optimized for drainage in winter
5. Vacuuming and Performance Tests
As with all our HVAC installations in Montreal, we performed:
- A complete vacuum evacuation
- Leak tests
- Pressure checks
- System calibration
Concrete Results for the Client
Immediate Thermal Comfort
Upon startup, the client noted:
- Rapid and uniform heating
- Gentle air conditioning without aggressive drafts
- A noticeable reduction in temperature variations
Reduced Energy Consumption
Thanks to Inverter technology and high efficiency:
- Fewer on/off cycles
- Optimized electricity consumption
- Reduced long-term energy costs
Silence and Discretion
In a dense urban environment like Ville-Marie, silence is crucial:
- Nearly inaudible indoor unit
- No disturbing noise for neighbors
Practical Tips for a Successful Installation in Montreal
Avoiding Common Mistakes
Here are the mistakes we often encounter:
- Installing the unit too low or too high
- Neglecting air circulation
- Underestimating the importance of outdoor positioning
- Choosing a model not suited to Quebec's climate
Why Choose AirGreen
Our approach is based on:
- Proven local expertise
- In-depth knowledge of buildings in Montreal, Laval, Longueuil, North Shore, and South Shore
- Installation compliant with the strictest standards
- Total transparency in our recommendations
A Concrete Example of AirGreen Expertise
This project in Ville-Marie perfectly illustrates our ability to:
- Adapt our installations to confined spaces
- Offer aesthetic and high-performance solutions
- Maximize comfort while respecting architectural constraints
Every installation is unique, and it is precisely this tailor-made approach that makes the difference.
Conclusion: A Durable and High-Performance HVAC Installation
The installation of this FUJITSU ORION XLTH+ 15,000 BTU wall-mounted heat pump in Ville-Marie represents a complete solution for four-season comfort. Thanks to rigorous execution and extensive field expertise, the client now benefits from a reliable, quiet, and highly efficient system.
At AirGreen, we continue to support homeowners in Montreal, Laval, Longueuil, the North Shore, and the South Shore in their HVAC installation projects, offering adapted, durable, and optimized solutions for the Quebec climate.
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
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?
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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).