Installation of a GREE (R-32) wall-mounted heat pump in Villeray–Saint-Michel–Parc-Extension
On a brick facade in Villeray–Saint-Michel–Parc-Extension , we are installing a GREE (R-32) wall-mounted heat pump with a brick-colored vertical casing , short connections, and precise commissioning. A clean, efficient, and durable AirGreen HVAC installation .
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.
High-end finish on brick facade: brick-colored metallic cladding, clean vertical connections and four-season performance for a Montreal condo
Context and comfort objectives
At AirGreen , we are modernizing a red brick condo in Villeray–Saint-Michel–Parc-Extension with a new-generation GREE R-32 wall-mounted heat pump. The main challenge: ensuring reliable heating in winter and gentle cooling in summer, while integrating the installation into a facade visible from the courtyard. The client wanted a discreet , clean , and easy-to-maintain finish, without compromising on longevity.
Why a GREE wall-mounted heat pump (R-32) for this project?
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Four-season efficiency : inverter modulation and very good low-temperature performance for constant comfort.
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R-32 refrigerant : better volumetric performance and reduced climate footprint compared to older generations of R-410A.
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Mini-split format : ideal for urban housing in Greater Montreal , without a duct network.
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Power portfolio (9,000 to 18,000 BTU) allowing precise sizing according to the calculated thermal load.
Our practice: we validate the power by calculating the load (orientation, glazing, infiltration, insulation). This rigor prevents oversizing, reduces short cycles and stabilizes humidity.
Reading the site and architectural choices
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Red brick facade with dark woodwork: Montreal heritage context.
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Low wall condenser , protected from the prevailing winds of the alley, in the immediate vicinity of the refrigerated crossing .
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Brick-colored metallized vertical cladding on two parallel uprights: cladding which visually disappears into the facade and protects the connections ( insulated copper , communication cable , drain ).
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Very short path between the outdoor unit and the indoor head: limited pressure losses and optimized commissioning .
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Power supply with drop loop and protected connections: reliability in rain and ice.
Our installation process (AirGreen method)
Step 1 — Preparation, drilling and sealing
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Marking of axes and clean **coring** through the brick with sleeve and slope ensuring gravity flow of condensates.
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Vapor barrier on the interior side to maintain the continuity of the envelope.
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Exterior sealing with brick-compatible elastomer to prevent infiltration and air bridges.
Step 2 — Mechanical installation of the condenser
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Level the base/stand, check front and side clearances for non-recirculating airflow .
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Vibration decoupling (pads and torque tightening) for a very low noise level on masonry.
Step 3 — Refrigeration connections and hooding
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Large radius bending of insulated copper tubes; no mechanical stress on the flanges.
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Nitrogen brazing , deep vacuum and micron leak testing.
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Installation of a vertical metallized cladding tinted close to the brick: UV/shock protection and aesthetic integration . Useful length of approximately 2.5–3 m , finished with waterproof finishing pieces.
Step 4 — Electricity and Safety
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Connection to a dedicated circuit with a rating in accordance with the GREE nameplate.
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Establishment of an accessible and labeled service section for maintenance.
Step 5 — Commissioning
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Control of pressures , temperatures , currents and superheat/subcooling .
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Setting of modes and speeds ; heating instructions based on the room comfort curve .
Visible details that make the difference
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Brick-colored cladding : the metal sheath matches the color of the wall and conceals the connections, a guarantee of acceptance by the co-ownerships.
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Straight vertical path : fewer bends = better reliability and maintained yields .
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Drip loop on the power supply**: prevents water from dripping towards the connectors.
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Free service access **: ease of annual maintenance, reduced intervention time.
Results observed
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Uniform comfort in the living area, with reduced stratification near the windows.
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Silence on the facade thanks to the separation and the cover which prevents unwanted noise.
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Careful aesthetics respecting the rhythm of the brick and metal uprights.
AirGreen Best Practices for Montreal Brick
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Drilling to the correct diameter and rigid sleeve to prevent the joints from bursting.
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Two-component waterproofing : exterior sealant + interior vapor barrier .
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UV and de-icing salt resistant cover ; stainless steel screws only.
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Clearances maintained around the turbine and exchanger to preserve heating capacity .
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Annual HVAC maintenance : cleaning of battery/fan, checking of pressures and insulation of connections.
Sizing and choice of range
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For a condo living area, the 9,000–12,000 BTU range covers most needs; more open or north-facing layouts may require 15,000–18,000 BTU .
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In the current offer, we recommend the GREE R-32 ranges (e.g. Livo R32 , Vireo R32 , Clivia R32 ) for their stability in extreme cold , their sobriety and their silence . The final choice is made at the time of submission after calculating the load and installation constraints.
Grants and Eligibility
R-32 wall-mounted heat pumps with capacity maintenance at around −25°C/−30°C are often eligible for assistance programs in Quebec. We support our customers with:
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the assembly of the file (serial numbers, photos, installation certificate),
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verification of criteria (power, yields, certification),
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coordination with the paying agency.
Maintenance: Owner's Guide
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Leave 60–90 cm free in front of the blower front.
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Clean the inner head filters every 4–8 weeks during use.
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Inspect the leak tightness of the hole and the condition of the cover every spring.
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Avoid any obstacles leaning against the vertical hood (bins, bicycles, ladders).
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Schedule annual HVAC maintenance to maintain performance and warranty .
Frequently asked questions that we address upfront
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Noise for the neighbors? The inverter + anti-vibration mounts combination limits structural transmission. We optimize the minimum nighttime speed if necessary.
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Harsh winter? Proper elevation, defrost management , and clearances ensure cold weather capacity .
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Aesthetics? The brick-colored cladding aligns the installation with the facade; the chosen interior heads remain discreet and easy to integrate.
In summary
This HVAC installation illustrates our approach to working in the plexes and condos of Villeray–Saint-Michel–Parc-Extension : carefully sized GREE (R-32) wall-mounted heat pump , perfectly aligned brick -colored metal cladding , short connections and rigorous commissioning . We apply the same standards throughout Greater Montreal ( Montreal , Laval , Longueuil , North Shore , South Shore ) to deliver lasting comfort , controlled energy bills and a finish that respects the local architecture.
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.
Which type of equipment for your project?
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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).