Four-season comfort in a bright plex on the Plateau
At AirGreen , we were commissioned to improve the comfort of an open-concept floor bathed in natural light in Plateau-Mont-Royal . The main room, with a skylight and white ceilings, suffered from significant solar gain in the summer and cool areas in the winter. Our recommendation: a Gree wall-mounted heat pump with R-32 refrigerant , compact, quiet and perfectly suited to a contemporary living space where aesthetics count as much as performance.
Why a Gree R-32 wall-mounted heat pump here?
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Superior energy efficiency , with inverter compressor to modulate power according to actual demand.
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Quiet operation : The very low noise level is suitable for open-plan living areas and quiet evening moments.
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R-32 refrigerant : reduces the environmental footprint and prepares the home for the demands of tomorrow.
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Reliable additional heating during the off-season and during moderate cold weather, limiting the use of electric baseboards.
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Eligibility for grants when the chosen configuration meets the effectiveness criteria of provincial and federal programs.
Detailed reading of needs and sizing
Our consultants assess the orientation , the actual surface area to be treated , the air stratification created by the high ceiling and the presence of the skylight . The objective is not to "oversize" the equipment, but to achieve the balance between air conditioning capacity during heat waves and heating efficiency when the temperature drops below zero.
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Sensitive summer load increased by direct sunlight: air conditioning becomes the priority.
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Controlled latent load : the selected machine manages dehumidification well without overcooling.
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Zoning : the main room is treated as a priority; adjacent rooms benefit from natural air transfer thanks to the high installation.
Expected result : 12,000 to 18,000 BTU depending on the final configuration of the unit chosen and the thermal profile of the location, with sufficient margin for extreme heat episodes without generating short cycles.
Installation details — clean, discreet, durable
Interior positioning
The wall-mounted head is installed under the ceiling , at a controlled distance from adjacent walls to ensure uniform diffusion . The chosen height promotes the Coandă effect : the air-conditioned air flows along the ceiling, mixes and then descends gently, which avoids the sensation of a direct draft in the living area.
Drilling and evacuation of condensates
The through-hole is made with a constant outward slope to allow gravity drainage of condensate— without a pump . This choice reduces the risk of breakdown and noise, while simplifying maintenance. We install an insulated sleeve and a vapor barrier at the wall to maintain the integrity of the envelope.
Refrigerant connections and power supply
The insulated copper pipes , communication cable , and dedicated power supply reach the outdoor unit via the shortest possible route , minimizing pressure losses and optimizing seasonal efficiency . Outside, the lines are protected in discreet capping coordinated with the facade (choice of colors available), ensuring a clean and professional appearance.
Vibration and noise management
The inner head is fixed to a template plate with anchors adapted to the support. The appropriate silent blocks on the outer side limit the transmission of vibrations. The result: virtually inaudible operation in the living room.
What the heat pump changes on a daily basis
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Montreal summers : air conditioning controls the light from the skylight without overcooling. Humidity remains comfortable, even during humid periods.
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Mid-season and early winter : the heat pump provides efficient heating at low cost, delaying the use of the main heating system.
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Winter : depending on the Gree range selected, the machine maintains heating capacity in cold weather ; the existing backup takes over during extremely cold weather .
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Energy bill : significant reduction thanks to the coefficient of performance which is significantly higher than an electrical resistance.
Product Focus: Gree R-32 wall unit (residential range)
The Gree R-32 wall-mounted family includes several series (e.g. Livo, Airy, Clivia, Vireo, Pular, Sapphire, Extrême ), covering capacities from 9,000 to 24,000 BTU and extreme cold profiles depending on the model. Common points that interest our customers in Greater Montreal:
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High frequency inverter for fine modulation, saving energy.
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Intelligent defrosting and electronic management of the heating cycle.
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Multi-layer filters and motorized shutters to direct air where it is needed.
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Simplified HVAC maintenance : front access to the housing, easy cleaning of the filter and exchanger.
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Subsidy compatibility when seasonal yields reach the required thresholds.
At AirGreen, we always validate the technical data sheet and the performance certificate of the specific model installed (SEER2/HSPS/SCOP), in order to ensure potential eligibility for current programs.
Key steps in our HVAC installation
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Technical visit : taking measurements, identifying the route of the connections, checking the electrical panel and clearances.
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Detailed proposal : capacity, recommended Gree series, installation rendering (routing, capping , brackets or slab for exterior), deadlines and guarantees.
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Facility :
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Installation of the plate and the inner head.
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Drilling at the correct angle, insulated sleeve, sealing around the perimeter.
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Laying and brazing of lines, deep vacuum drawing and leak testing .
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Compliant electrical connection (dedicated circuit breaker if required).
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Start-up, superheat/subcooling measurements and setup.
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Customer delivery : demonstration of operating modes , maintenance instructions, recommended inspection schedule.
Good practices and pitfalls to avoid
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Don't underestimate the impact of a skylight : provide sufficient capacity and air diffusion that embraces the open area.
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Respect the condensate drainage slope : an insufficient slope causes droplets and odors.
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Limit the length of refrigerant connections: the shorter it is, the more stable the performance .
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Protecting aesthetics : aligned capping, neat drilling, discreet supports; in a minimalist white interior, the finesse of execution makes all the difference.
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Schedule HVAC maintenance : Annual filter cleaning and a complete service every 12 to 24 months maximize longevity.
Grants and eligibility (Montreal, Laval, Longueuil, North Shore, South Shore)
For high-efficiency wall-mounted heat pumps , financial assistance may be available if the selected series and capacity meet the required efficiency thresholds. Our team will guide you through:
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Check eligibility according to the technical sheet of the specific model installed,
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Prepare the required documents ,
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Optimize the choice of the Gree series (certain extreme cold ranges offer favorable program yields).
Result — controlled comfort, preserved interior
The installation in this Plateau plex provides consistent cooling in the summer and energy-efficient supplemental heating the rest of the year, without compromising the clean style of the space. Occupants benefit from stable comfort , better dehumidified air , and precise control of operating costs .
Why entrust your HVAC installation to AirGreen?
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Local expertise : daily interventions in Montreal , Laval , Longueuil , North Shore and South Shore .
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Quality of execution : compliance with professional standards, calibrated refrigeration equipment, systematic quality control procedures.
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Complete support : from thermal studies to subsidies , including HVAC maintenance .
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After-sales service : usage advice, maintenance reminders, parts availability and performance monitoring.
Considering a Gree wall-mounted heat pump for a condo, plex, or townhouse? At AirGreen, we size, install, and maintain systems designed for the climate reality of Greater Montreal —with a level of finish that respects the architecture and daily lives of our clients.