A well-groomed interior, precise testing and immediate comfort in a Rosemont condo
At AirGreen , we have just installed a GREE wall-mounted heat pump ( Livo R32 family) in a condo in the Rosemont–La Petite-Patrie district of Montreal . The aim of the project was to provide reliable heating in winter and stable air conditioning in summer , while respecting the constraints of urban housing: limited space, close neighbors and the need for impeccable finishing. The interior head, with its discreet design and integrated digital display, fits perfectly into the living room wall.
Project context and client objectives
The owner wanted to replace an older unit with an energy-efficient, quiet HVAC solution that performed well down to low temperatures. Our recommendation was a GREE R-32 wall-mounted heat pump , known for its high seasonal efficiency and stability in heating mode in Montreal's cold weather. The goal was clear:
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reduce operating costs ;
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stabilize the indoor temperature ;
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preserve acoustic tranquility ;
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prepare the installation for eligibility for subsidies applicable to high-efficiency heat pumps in Greater Montreal.
Reading performance at commissioning
When switching on in heating mode , we took an infrared reading at the battery outlet. The thermometer displays 113°F (≈ 45°C) at the lip of the shutter, a value consistent with a rapid temperature rise on an Inverter unit in nominal mode. This measurement is part of our standard protocol: it validates the quality of the heat exchange , the correct charging of the circuit and the air circulation . We always complete this test with:
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a pressure test and a leak test of the refrigeration circuit;
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checking airflow and fan speeds ;
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control of instantaneous consumption and power factor at different levels.
Technical choice: R-32, Inverter and four-season comfort
R-32 refrigerant has a lower global warming potential than older generation refrigerants, while still allowing for higher efficiencies at partial load. Coupled with inverter logic, the indoor head precisely modulates its power to maintain the setpoint smoothly. In concrete terms, this means:
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less perceived temperature variations ;
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reduced operating noise ;
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optimized electricity consumption during long mid-season and winter periods.
Architectural integration and route of connections
The interior head is positioned at the top of the wall , away from obstacles and with sufficient clearance for the shutter to sweep . This placement ensures uniform diffusion towards the heart of the living areas. The main drilling was made perpendicular to the exterior wall, with a slight slope for gravity drainage of condensates.
The refrigerant connections and communication wiring use discreet white capping that follows the wall-ceiling junction, then passes through the casing to the outdoor unit located on the rear balcony. The total length of the route is optimized to comply with the manufacturer's recommendations and limit pressure losses. Careful drips on the exterior protect the masonry and cladding from water stains in summer.
External support and electrical coordination
Outdoors, the GREE condenser is placed on a raised aluminum support to promote air circulation and prevent snow accumulation. We integrate anti-vibration pads to limit mechanical transmission to the structure. On the power supply side, the dedicated line and the circuit breaker have been checked to confirm compliance with the assembly's nameplate (voltage, maximum current, protections). Grounding and communication wiring are secured in conduits suitable for outdoor environments.
Key steps of an AirGreen installation
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Technical visit and assessment of constraints (useful height, obstacles, orientation of walls, neighborhood).
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Calculation of interior head positioning to maximize sweep and minimize air recirculation.
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Careful drilling with wall pass-through, sleeve and calibrated slope for the gravity drain .
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Installation of the capping and routing of the connections while respecting the radii of curvature and the insulation.
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Brazing under nitrogen , vacuuming and leak testing with dry nitrogen.
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Opening of the valves , electrical checks, progressive start-up and reading of temperatures (including our measurement of ≈45°C on blowing).
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Fine adjustment : modes, speeds, shutters, settings, timer and energy saving options.
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Customer training : filter, cleaning, seasonal instructions, best practices to extend lifespan.
Results: comfort, silence and economy
From the first hour, the customer notices:
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stable and even heat in the living room and adjacent rooms;
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a contained noise level thanks to the modulating fan and the careful location;
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appreciable responsiveness when changing instructions.
In summer, the same unit provides efficient cooling , with intelligent defrosting in winter heating mode to maintain performance without prolonged outages.
HVAC Best Practices and Maintenance
To maintain original yields , we recommend:
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cleaning filters every 4 to 6 weeks during periods of intensive use;
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visual inspection of the capping and drain at each change of season;
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annual maintenance by an AirGreen technician: checking pressures, battery, fan and condensate;
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In winter, clear the area around the condenser (snow, ice, leaves) to ensure air intake .
Grants and Eligibility
High-efficiency wall-mounted heat pumps using new-generation refrigerants such as R-32 are generally eligible for assistance programs in Greater Montreal. We support our clients in Montreal , Laval , Longueuil , as well as the North Shore and South Shore , to select equipment and prepare application files based on current criteria (seasonal efficiency, performance in extreme cold, compliant installation).
What sets AirGreen apart
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Local expertise in Montreal buildings (condos, plexes, houses).
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HVAC installations that prioritize fine finishing and acoustic respect for the neighborhood.
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Complete support : choice of BTU capacity, advice on the position of the heads , preparation for subsidies , instrumented commissioning and responsive after-sales service .
Tips for properly sizing your wall-mounted heat pump
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Evaluate the actual thermal load (taking into account insulation and sealing).
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Favor new generation R-32 models to combine efficiency and reduced environmental impact .
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In condos and plexes, opt for a short route for connections and gravity drainage when the configuration allows it.
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If multiple rooms need to be covered, consider a Multi-Zone Heat Pump or adding a second head, depending on occupancy and partitions.
Review of the project in Rosemont–La Petite-Patrie
This GREE wall-mounted heat pump (Livo R32) perfectly meets expectations: efficient heating even in cold weather, stable cooling in summer, silence , energy efficiency and aesthetic integration . The measurements at commissioning, including the blowing temperature of approximately 45 °C , confirm a healthy circuit and a rapid temperature rise capacity . It is a sustainable investment, aligned with AirGreen standards and the requirements of residential buildings in Montreal.
Are you in Greater Montreal?
Whether you are in Montreal , Laval , Longueuil , on the North Shore or the South Shore , our team will support you from diagnosis to commissioning , with clear advice, clean work and measured performance. For a similar project, contact us: we will suggest the BTU capacity and configuration adapted to your home and your energy saving objectives.