Project

Fujitsu wall-mounted heat pump installation in Rosemont–La Petite-Patrie: discreet comfort and four-season performance

AirGreen installed a Fujitsu Airstage R32 wall-mounted heat pump in a Rosemont–La Petite-Patrie apartment. Its discreet interior integration, efficient air distribution, and stable comfort are perfectly suited to Montreal's urban lifestyle.

By AirGreen Climatisation & Chauffage Admin4 min read
Fujitsu wall-mounted heat pump installation in Rosemont–La Petite-Patrie: discreet comfort and four-season performance
Fujitsu wall-mounted heat pump installation in Rosemont–La Petite-Patrie: discreet comfort and four-season performance
–chapters in this story
4 minreading time
–type of installation
2026year published
The tour

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.

Generic diagram: wall-mounted heat pump, indoor and outdoor units

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.

  1. 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.

  2. The refrigerant lines, the communication cable and the drain go through the wall in a single opening, sealed against water, cold air and insects.

  3. Two insulated copper pipes connect the two units. Outside, a line cover can protect them from sun, knocks and weather.

  4. A shut-off switch near the outdoor unit isolates it safely for service. It must stay accessible at all times.

  5. The compressor and the fan. In heating mode it captures heat from the outdoor air, even in winter, and moves it inside.

  6. On the ground or on the wall, it keeps the unit above accumulated snow. The unit stays clear and defrost water can drain away.

  7. The fan needs to blow freely. Storage, a fence or a wall too close, and efficiency drops while noise goes up.

The job

In a residential apartment in Rosemont–La Petite-Patrie , Montreal, we recently completed the installation of a Fujitsu wall-mounted heat pump , a choice perfectly suited to urban realities: optimized spaces, precise comfort needs and the search for a quiet, reliable and efficient system all year round.

This type of neighborhood, composed mainly of duplexes and small residential buildings, demands a careful approach from both a technical and aesthetic standpoint. At AirGreen , our goal remains the same: to seamlessly integrate HVAC technology into the living space, without compromising on comfort or sustainability.

The system installed: Fujitsu Airstage wall-mounted heat pump (R-32)

Based on the elements visible in the interior photo, this is clearly a Fujitsu Airstage wall-mounted heat pump (mini-split/wall unit) , operating on R-32 refrigerant . It features a compact wall unit with a clean design, installed high up — an ideal configuration for uniform air distribution in a Montreal apartment.

Model consistent with the installation

Although the nameplate is not legible in the image, the shape of the indoor unit, the Airstage designation, and the urban residential setting strongly suggest a Fujitsu Altair 300 (KNAS R-32) or Altair 500 (KPAS R-32) . These models are frequently installed in apartments and condos in Greater Montreal due to their balance of performance, quiet operation, and energy efficiency.

Why a Fujitsu wall-mounted heat pump is ideal in Rosemont

In an area like Rosemont–La Petite-Patrie, several constraints come into play:

  • areas sometimes small,

  • standard ceilings,

  • party walls,

  • requires very quiet operation,

  • Heating and air conditioning are often centralized in a limited way or non-existently.

The Fujitsu wall-mounted heat pump perfectly addresses these realities thanks to:

  • a gentle and directional airflow , without unpleasant drafts,

  • excellent modulation , avoiding sudden temperature variations,

  • high efficiency in air conditioning during the summer,

  • reliable heating capacity for much of the Montreal winter.

Interior installation details: precision and integration

1) Positioning at a height, near an opening

The unit is installed above an interior passageway, a common and effective solution in urban housing. This position allows for:

  • improved air circulation in several areas,

  • discreet integration into the existing architecture,

  • minimal occupation of usable wall space.

We always validate the clearances recommended by Fujitsu to ensure optimal operation and easy access for maintenance.

2) Clean and discreet finish

The routing of the pipes (refrigerant, drain, supply) is perfectly integrated into the wall, without visible moldings or intrusive elements. This is essential in homes where interior aesthetics are important.

At AirGreen, we pay particular attention to:

  • wall head alignment,

  • the cleanliness of the joints,

  • the stability of the fixing,

  • overall visual discretion.

3) Integrated sensors and controls

The indicator lights and integrated sensors under the unit are typical of recent Fujitsu models. These elements contribute to:

  • more precise temperature control ,

  • improved responsiveness depending on room occupancy,

  • consistent comfort, without frequent adjustments.

Everyday comfort: what the customer quickly notices

In projects similar to Rosemont, residents typically observe:

  • a more stable temperature throughout the dwelling,

  • Quiet air conditioning, even during heat waves.

  • an improvement in nighttime comfort

  • a reduction in the use of electric baseboard heaters.

In the mid-season, the wall-mounted heat pump often becomes the primary source of heating, resulting in better energy efficiency and more consistent comfort.

An AirGreen installation: beyond the machine

Even with a well-known brand like Fujitsu , the quality of the installation remains crucial. For this type of residential project, our approach includes:

  • analysis of the actual thermal load of the dwelling,

  • the precise choice of the interior location,

  • the watertight and durable wall drilling,

  • the rigorous vacuuming of the pipes,

  • complete commissioning with functional tests,

  • Usage tips adapted to urban lifestyles.

It is this rigor that ensures that the heat pump delivers its true performance, year after year.

Maintenance and longevity

In an urban environment like Montreal, minimal but regular maintenance is recommended:

  • Periodic cleaning of the filters

  • drainage check

  • Occasional professional maintenance to preserve performance and reliability.

A well-maintained Fujitsu wall-mounted heat pump can provide many years of worry-free comfort.

AirGreen: Your HVAC Expert in Montreal

Whether in Rosemont–La Petite-Patrie , elsewhere in Montreal (Plateau-Mont-Royal, Villeray, Ahuntsic, Verdun, etc.), in Laval or on the North Shore / South Shore , we install Fujitsu systems adapted to local realities, always with the same requirement for quality.

The steps

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.

Step 1 of 9The on-site estimate

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.

  1. 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.
  2. The quoteModel, capacity and price, in writing. We also check whether the model qualifies for assistance programs.
  3. Getting readyFloors and furniture protected, wall plate position marked level, wall opening located.
  4. The wall openingA single opening, with the slope the drain needs to flow outside.
  5. The outdoor unitSet on a stand raised above the snow, with the clearances the manufacturer requires.
  6. Lines, cable and drainConnected, insulated and protected. The opening is then sealed against water, cold air and insects.
  7. The electrical workA dedicated circuit and an accessible disconnect near the outdoor unit.
  8. Tests and start-upLeak test, vacuum, then start-up and a check of heating and cooling.
  9. The walkthroughRemote, modes, filters: we show you the essentials before we leave.
Your numbers

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.

Size checkYour baseboards, in BTU/h
–BTU/h of installed electric heat

    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.

    Mistakes avoided

    Four mistakes we do not make

    Flip each card to see what we do instead.

    Going further

    Your own project, step by step

    Through the seasons

    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.
    At your place

    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.

    0 / 6 checked
    True or false

    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.

    2. You pick the capacity with a simple square-footage rule.

    3. A multi-zone connects several indoor heads to a single condenser.

    4. The disconnect can sit behind the patio furniture.

    Frequently asked questions

    What people ask us about this kind of work

    12 questions
    Does a wall-mounted heat pump heat in winter?
    Yes, it heats and cools. Its capacity drops in very cold weather; the operating range depends on the model and is listed on its spec sheet.
    Wall-mounted or multi-zone: how do I choose?
    One wall head and one condenser outside: the direct solution for a room or an open area. For two to five rooms, a multi-zone puts one head in each room on a single condenser.
    Where does the outdoor unit go?
    Where it stays above the snow, clear and accessible, away from walkways. We decide it with you during the estimate.
    Are there grants?
    Depending on the model and your situation, assistance programs may apply, including Hydro-Québec's LogisVert. AirGreen checks the model number before quoting an amount. See the grants.
    Do I need a permit?
    Rules vary from city to city: location, distances, noise. See permits and by-laws, and we check for your address.
    How cold can it heat?
    It depends on the model. According to Hydro-Québec, newer models work down to a temperature between −15 °C and −25 °C, and some cold-climate models are certified lower. The minimum temperature is on each unit's spec sheet.
    How much can I save?
    Hydro-Québec says a heat pump can be up to three times more efficient than baseboards for heating in the colder months. The result depends on the house, the climate and how it is used.
    How is the LogisVert assistance calculated?
    For ENERGY STAR cold-climate certified heat pumps, Hydro-Québec lists assistance of $120 per 1,000 BTU/h of heating capacity at −8 °C. AirGreen checks the exact model before quoting an amount; only Hydro-Québec confirms the assistance granted. See the grants.
    Is it noisy?
    The sound level depends on the model and is listed in decibels on each unit's spec sheet. Location matters too: when possible, we avoid putting the outdoor unit under a bedroom window.
    The outdoor unit is covered in ice: is that normal?
    Some frost is: the unit runs defrost cycles. Never hit the ice. If the unit stays iced up or stops heating, call us.
    Does AirGreen hold the required licences?
    Yes. AirGreen holds RBQ licence 5645-9605-01, subclasses 15.8 Ventilation, 15.10 Refrigeration and 16 Electricity.
    Is the estimate free?
    Yes. The on-site estimate is free and the quote follows within 24 hours. Book my free estimate.

    Could this job help a neighbour?

    Share
    Similar projects

    More jobs to see, near you

    By town, by equipment or by region: browse more than 4,700 published projects.

    Each dot: a town where AirGreen has published projects. The glowing dot: this job.

    All our projects

    Your project

    Every house has its constraints. We see them before we install.

    The on-site estimate is free and the quote follows within 24 hours.

    • RBQ licence5645-9605-01 · 15.8, 15.10, 16
    • EstimateOn site, free
    • QuoteWithin 24 hours

    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).

    Leave a comment