Four-season comfort perfectly integrated into Montreal duplex life
In Rosemont–La Petite-Patrie , we just completed an exemplary HVAC installation in a typical brick duplex with metal exterior stairs and a wooden deck . The owner's goal: to benefit from efficient heating in winter and discreet cooling in summer, without compromising the aesthetics of the backyard or the daily use of the deck. We recommended a new-generation Gree R-32 wall-mounted heat pump , a proven choice for Montreal urban housing seeking efficiency, reliability and a small visual footprint.
Site context: backyard, wooden deck and brick facade
The outdoor unit is installed on the terrace, in a recess protected by a slatted panel . This context imposes clear rules:
-
Optimized airflow despite limited space: the unit has been raised on a galvanized support to clear the airflow from the wooden floor and prevent the accumulation of snow and dust.
-
Transmission of vibrations minimized thanks to anti-vibration pads , essential for preserving the peace and quiet of occupants and neighbors.
-
Clean routing of the refrigeration connections and the communication cable in a discreet gray capping , running along the slatted partition to the drilling point.
-
Condensate management by gravity flow, with continuous slope and clear outlet to prevent any water return during thaws.
This type of installation, common in Montreal , requires specific know-how: we think about both the mechanical performance and the actual use of the terrace (furniture, traffic, annual maintenance).
Machine choice: Gree R32, a modern wall-mounted heat pump
The Gree brand stands out for its Inverter technologies , its robustness in cold climates and the availability of R-32 ranges (e.g. Livo R32, Vireo R32, Airy R32, Sapphire R32 , etc.). For this project, we selected a high-efficiency R-32 model , ideal for an open-plan main living area or a medium-sized home. Without specifying a specific reference here, the chosen range offers:
-
High seasonal heating and cooling efficiencies , helping to reduce energy costs .
-
Quiet operation of the outdoor unit, crucial in a shared yard.
-
Reliable behavior at low temperatures (down to approximately −25°C depending on the range), ensuring stable heating throughout most of the Montreal winter.
-
R-32 refrigerant , with a lower global warming potential (GWP) than R-410A, with optimized charges.
Sizing and implementation: precision and compliance
To correctly size a wall-mounted heat pump , we correlate:
-
Building envelope (brick wall, degree of insulation, waterproofing).
-
Surface area and interior configuration (open area, corridors, natural air circulation).
-
Exposure and solar gain (interior courtyard quite shaded here, favorable to summer performance).
The outdoor unit is positioned away from snow drifts and out of the passageway on the terrace. The lateral and frontal clearances recommended by Gree are respected, including with respect to the slatted panel in order to avoid any recirculation of hot air in heating mode. All hardware (anchors, screws, support) is treated against corrosion .
On the interior side, a wall-mounted motorized shutter efficiently serves the main space. We optimized the connection path (approximately 2 to 4 m visible between the outlet and the unit, including the passage and capping) to reduce pressure losses, facilitate maintenance, and preserve aesthetics.
Key steps in AirGreen installation
-
Drilling the wall at a controlled angle for condensate drainage.
-
Installation of refrigeration connections (high density insulated copper) and compliant crimping /brazing.
-
Deep vacuuming of the circuit, leak tests and pressure gauge control before releasing the fluid.
-
Electrical connection on dedicated circuit with waterproof outdoor disconnect box , in accordance with RBQ requirements and HVAC best practices.
-
Commissioning : checking the inverter parameters , currents , drainage and blowing temperatures .
-
Finishing : clean capping , weatherproof sealing of the drilling, site cleanliness and maintenance briefing to the client.
Results: immediate comfort and lasting savings
As soon as it is started, the heat pump provides:
-
In summer : fast and even air conditioning , without uncomfortable drafts thanks to fine fan control and Inverter mode .
-
In winter : stable heating with intelligent defrosting , reducing shutdown cycles and maintaining a gentle, constant temperature.
-
All year round: a contained noise level , both inside and outside, preserving the tranquility of the backyard.
The owner thus benefits from a measurable reduction in consumption compared to basic electrical appliances, with a return on investment accelerated by seasonal performance.
Grants and eligibility: Montreal, Laval, Longueuil, North Shore, South Shore
Gree R-32 wall-mounted heat pumps , when they meet the required performance thresholds (including Energy Star and low temperature heating criteria), are often eligible for provincial and utility financial assistance . At AirGreen, we:
-
Let us validate the admissibility of the proposed model.
-
Let’s prepare the technical supporting documents (yields, product sheets, detailed invoices).
-
We support our clients, from Montreal to Laval , Longueuil , North Shore and South Shore , in submitting requests to accelerate reimbursement.
Best practices for Montreal terraces and backyards
To maximize the lifespan and performance of a wall-mounted heat pump in a courtyard/patio:
-
Maintain clear clearance around the air intake and blower (do not stick flower boxes, boxes, bicycles).
-
Clear snow in front of the unit in winter and avoid accumulation under the slats.
-
Gently clean the exterior grill at the beginning of summer (without high pressure).
-
Schedule annual HVAC maintenance : refrigerant check, electrical tightening, coil cleaning, drain check.
-
Monitor capping and sealing points after large freeze/thaw cycles.
Pitfalls to avoid when undertaking a similar project
-
Undersize the machine for a multi-room open area: the wall head must be positioned so that the flow reaches the occupied areas.
-
Placing the outdoor unit too low on a deck: Snow and debris reduce performance, increase noise, and accelerate corrosion.
-
Neglecting drainage : A drain with no slope or a clogged drain can cause water damage and odors.
-
Ignore the neighborhood : the orientation of the blowing must avoid resonances against slatted panels or nearby walls.
Why AirGreen for your HVAC installation in Rosemont–La Petite-Patrie and throughout Greater Montreal
We specialize in wall-mounted and multi-zone heat pumps adapted to local architecture (plexes, condos, houses). Our strength:
-
Neutral advice on recent R-32/R-454B brands and ranges (Gree, Fujitsu, Midea, Sharp, etc.).
-
RBQ certified and compliant installations , with clear guarantees .
-
Responsive after-sales service , parts and maintenance available locally.
-
Aesthetic approach : careful cappings, discreet supports, optimized routes.
Whether you are in Montreal , Laval , Longueuil , on the North Shore or the South Shore , we deliver sustainable, efficient projects that are perfectly adapted to your daily life.
Conclusion
This Gree R-32 wall-mounted heat pump installation in Rosemont–La Petite-Patrie illustrates our way of working: site analysis , sound technical choices , clean execution and administrative support . The result: four-season comfort and energy cost control , without compromising the aesthetics of the backyard.