Installation of a Fujitsu (R-32 range) wall-mounted heat pump in Rosemont–La Petite-Patrie
In Rosemont–La Petite-Patrie, AirGreen installs a Fujitsu R-32 : a quiet and efficient wall-mounted heat pump , carefully installed in a windowed living room, with a short run and perfect airtightness. Serving Greater Montreal.
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.
Four-season comfort in a bright living room: careful installation that respects space, decor and performance
Context and objectives of the project
In Rosemont–La Petite-Patrie , a homeowner wanted to modernize the comfort of his Montreal home: efficient cooling in the summer , supplemental heating in the off-season, silence , more energy savings and a discreet look in a very windowed living room. We offer a new generation Fujitsu wall-mounted heat pump with R-32 refrigerant , chosen for its reliability, high seasonal efficiency and cold resistance suitable for Greater Montreal .
Why a Fujitsu wall-mounted (R-32) for this living room?
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Competitive seasonal efficiency (SEER/HSPF), inverter compressor and precise control electronics: the machine maintains a stable temperature with controlled consumption.
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R-32 : better GWP and favorable thermodynamic performance, with reduced loads at equivalent capacity.
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Ideal capacity for a living room (living room/dining room) typical of Montreal plexes, without oversizing which would cause short cycles or discomfort.
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Extreme cold operation : XLTH/Altair/Orion range model (depending on the configuration chosen) compatible with our winters; perfect as a backup to the main heating system.
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Silence : very contained acoustic profiles, both on the interior head and condenser sides, to preserve the calm of the living room.
HVAC installation procedure
1) Interior layout: aesthetics and optimal blowing
The wall head is placed high under the ceiling , centered on the section of wall between two windows. This position favors:
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uniform airflow over the living area;
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effective destratification in winter (hot air blown in the upper part).
We control:
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the leveling of the unit;
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clearances around and in front of the facade (curtains, rods, furniture, TV) so as not to disrupt air intake;
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access for HVAC maintenance (filters, facade, deflectors).
Attention point for the living room: curtains near a wall can disrupt the recovery. We have adjusted the height and spacing to prevent any re-aspiration of the blown air (risk of short cycles, noise and reduced efficiency).
2) Drilling, wall crossing and sealing
The through- hole is made with a controlled angle towards the outside for gravity flow of the drain. Installation of a sheath to protect the insulation from the refrigeration connections, then interior/exterior caulking (compatible mastic, vapor barrier) for air and water tightness.
3) Route of external connections and finishes
Outside, the insulated copper tubes, communication cable, and condensation drain are housed in a UV-coated cap, matching the cladding. The route is short and straight to limit pressure losses and preserve the factory refrigerant charge.
4) Power supply and electrical safety
The dedicated circuit supplies power to the outdoor unit via a disconnect box within easy reach of the technician. Protection at the main panel is rated to the maximum amperage (MCA/MOP) of the installed model, with conduits and devices marked for ease of service .
5) Refrigeration procedures and commissioning
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Nitrogen brazing , torque testing of flared fittings , nitrogen leak testing .
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Deep vacuum (<500 microns), stabilization, then release of load according to the manufacturer's protocol.
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Checking the intensities , blowing temperatures , over/underheating and factory settings adapted to the living area .
Result: tangible comfort and discreet integration
The customer immediately benefits from uniform cooling during hot weather and responsive heating support in autumn and spring. The interior facade remains simple : the head blends into the decor, the blowing line avoids curtains and the positioning does not encroach on the TV corner .
Technical points that make the difference
Sizing (BTU) and Air Management
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Calculation of load on the open surface (living room + dining area), taking into account the windows and orientation.
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Selection of a consistent wall capacity (typology 9k–12k–15k depending on volumes and solar contributions), to maintain a stable inverter regime , therefore silence and efficiency .
Condensation drain
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Gravity with controlled slope and protected discharge point.
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Flow and watertightness test at the end of the work.
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Advice to the customer to avoid obstruction (dusting, seasonal checks).
Acoustics and vibrations
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Pads on bindings, ventilation profile adjusted to Quiet mode for the evening.
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Outside: choice of a suitable base/brackets (depending on the facade), clearances respected to limit resonance against the wall.
Longevity and cleanliness of the installation
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Compliant bending radii , continuous insulation on the lines, stainless steel screwed UV trunking.
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End of work documentation: photos , suction/discharge values , microns , intensities, usage advice.
Daily usage tips
Target modes and temperatures
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Aim for 23–24°C in summer for stable comfort and controlled consumption.
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In mid-season, leave the inverter running continuously: avoid impulsive switching on/off.
Airflow and curtains
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Ensure that the curtains remain out of the direct flow: if necessary, adjust the vertical/horizontal sweep to bring the air towards the occupied zone.
HVAC Maintenance
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Clean filters every 4–8 weeks (depending on dust and animals).
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Annual inspection: evaporator , turbine , drain , contactors , tightening and capping control .
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An AirGreen maintenance contract is available for Montreal , Laval , Longueuil , the North Shore and the South Shore .
Grants and Eligibility
High-efficiency R-32 wall-mounted heat pumps may be eligible for assistance programs (low-temperature performance criteria, certification, compliant installation). We verify eligibility based on the exact model and assist the customer with the process .
Challenges specific to a Montreal salon… and our solutions
Large windows, variable solar gains
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Orientation analyzed to avoid hot zones near bay windows.
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Sweep and flow settings to even out the temperature between the TV area and the dining room.
Integration with existing systems
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Discreet routing of connections in the external chute, short passage to preserve the factory refrigerant charge.
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Coordination with the existing electrical system of the home and clear identification of circuit breakers.
Quebec winter
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Clearances provided for efficient defrosting , adequate height of the outdoor unit (depending on the facade) to avoid snowdrifts and splashes .
What the customer gains, concretely
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4-season comfort in the main living area.
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Lower bills thanks to the inverter compressor and R-32.
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Silence and aesthetics : harmonious integration without disturbing the layout.
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Simplified maintenance and clear access to service components.
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AirGreen support : sizing, installation, HVAC maintenance and grant procedures.
AirGreen: local expertise and serious monitoring
Our teams operate weekly in Montreal , Laval , Longueuil , on the North Shore and the South Shore . Method, site cleanliness, compliance with codes , documented commissioning report: this is how we guarantee efficient and durable installations .
Service keywords : heat pump , wall-mounted air conditioner , HVAC installation , HVAC maintenance , Montreal , Laval , Longueuil , North Shore , South Shore , Fujitsu , R-32 .
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).