Four-season comfort in a bright condo: precise interior integration
At AirGreen , we have just completed an HVAC installation that epitomizes our expertise: a Gree R-32 wall-mounted heat pump installed high above a built-in closet in a home in the Rosemont–La Petite-Patrie neighborhood of Montreal . The client's goal was clear: improve summer comfort in the master bedroom and provide stable, economical supplemental heating from mid-season to winter, all without encroaching on the living space.
A typically Montreal context, very real constraints
The apartment features white walls, full-height storage, and ceilings with ample space for a wall unit . However, this type of interior imposes specific requirements:
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preserve minimalist aesthetics;
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avoid direct blowing on the rest area;
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ensure a very low noise level at night;
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create a short and discreet technical route to the outside to maximize efficiency.
We therefore opted for a high-level installation : the indoor unit is placed near the ceiling, centered above the closet. This position allows for long-range horizontal diffusion and vertical sweeping that evens out the temperature without any noticeable drafts on the bed.
Why Gree R-32 for this project
The Gree wall-mounted range using R-32 refrigerant ticks the priority boxes for a Montreal condo:
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High energy efficiency (competitive SEER/HSPF) which translates into savings in air conditioning and heating;
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Quiet operation : the noise level in night mode is among the lowest in its category, ideal for a bedroom;
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Cold weather performance adapted to the local climate, with capacity maintained down to negative temperatures;
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R-32 refrigerant with reduced global warming potential compared to R-410A;
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Compatibility with grant programs when combined with recognized efficiency thresholds.
In this home, the calculated heat load (well-insulated envelope, room between 12 and 18 m², moderate exposure) brings us to the range of 9,000–12,000 BTU for the indoor head. This dimension avoids short cycles and ensures effective dehumidification during heat waves.
Key steps and technical choices
1) Identification and preparation
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Check clearances around the head (ceiling, sides, blowing area).
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Definition of a single drilling path towards the outside, with a slight slope for the gravity flow of condensates.
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Surface protection and leveling of the mounting plate .
2) Drilling and passage of connections
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Creation of a clean and watertight drilling, with sleeve and vapor barrier .
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Passage of insulated refrigerant lines , communication cable and drain . The total length remains deliberately short , in order to limit pressure losses and optimize the COP .
3) Interior finishes
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Installation of a flush white trunking , aligned with the lines of the closet for a clear visual reading.
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Checking the level of the head and the anchoring (dowels suitable for the support, tightening torque respected).
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Drain slope test: gravity evacuation prioritized, condensate pump solution kept as an option if a future redevelopment requires it.
4) External connections
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Connection of the links to the condenser (positioned outside according to regulatory clearances and the best air circulation).
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Brazing and nitrogen pressurization followed by deep vacuum drawing to target values, with stabilization.
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Power up on dedicated circuit and calibration of electrical protections in accordance with the manufacturer's instructions.
5) Commissioning and quality control
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Pressure control, blowing/return temperature measurement, leak- tightness check.
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Setting Auto/Heat/Cool modes , sweep and Night mode .
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Customer training on basic maintenance ( filters , condenser clearance, seasonal best practices).
Result: precise comfort, preserved aesthetics
The high positioning completely frees up the wall and preserves the clean aesthetic of the room. The air blade is directed so as to cover the resting area without direct blowing. In summer, the speed rises quickly, then the Inverter mode stabilizes the temperature and humidity. In the off-season, the machine provides flexible and economical additional heat , useful when the building's central heating is still off or operating at low speed.
HVAC Use and Maintenance Tips
To maintain performance over time, we recommend:
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Clean filters every 4 to 8 weeks during periods of heavy use;
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Maintaining free clearance around the outdoor condenser (foliage, snow, objects);
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Programming Night mode or setting a gentle setting (no temperature yo-yo) to reduce consumption;
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Annual HVAC maintenance by AirGreen: check of the refrigeration circuit, condensates, tightness of connections and firmware (if applicable).
Points of vigilance — and how we avoid them
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Oversizing : source of short cycles and discomfort. We size based on actual thermal load , not just surface area.
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Underestimated drainage : risk of droplets. The slope is measured, the drain is sheathed and secured.
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Poorly placed drilling : thermal bridges, noise. Our drillings are sealed and offset from sensitive areas.
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Vibrations : we use appropriate mounts and silent blocks , and validate the balancing while running.
Grants and Eligibility
For a recent R-32 wall-mounted heat pump , several mechanisms can apply in Quebec depending on the seasonal performance of the equipment and the criteria in force. Customers in Montreal , Laval , Longueuil , as well as the North and South Shores benefit from AirGreen support to identify relevant programs , gather proof of installation and optimize demand when the chosen model reaches the required thresholds.
Why AirGreen in Montreal and Greater Montreal
We understand local architectural realities : plexes, recent condos, masonry buildings, wooden structures, load-bearing walls, concrete ceilings. This expertise allows us to offer short technical routes , anticipate co-ownership constraints and ensure careful finishes that integrate with the interior design. Our team serves Montreal , Laval , Longueuil , the North Shore and the South Shore daily, with slots adapted to the constraints of construction sites in residential areas.
What the customer gains, concretely
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Immediate comfort in summer, thanks to effective dehumidification and gentle laminar air;
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Energy savings compared to a traditional air conditioner, and efficient additional heating ;
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Silent night mode for preserved sleep;
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Aesthetic integration : the device blends into the room, the chute merges with the carpentry;
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Peace of mind : an installation carried out according to the rules of the art, tested, documented and explained.
Installation summary sheet
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Type : Gree wall-mounted heat pump (mini-split) – R-32
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Interior location : installation high above a cupboard; clearances respected
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Route : single drilling, gravity drain , short and isolated connections, white interior chute
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Electrical : Dedicated circuit in accordance with the manufacturer's recommendations
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Commissioning : vacuum, pressures checked, seal validated, comfort settings and night mode
And after?
AirGreen offers a simple maintenance plan : annual reminder, inspection visit, professional cleaning if required, and updating of operating parameters. In the event of expansion or redevelopment, the solution is scalable (adding a second head to a multi-zone system, for example, if the project warrants it).
By installing this Gree R-32 wall-mounted heat pump in Rosemont–La Petite-Patrie , we are delivering exactly what Greater Montreal households expect: precise comfort, better controlled energy bills, and discreet integration into interiors where every inch counts. This is the AirGreen signature: clean, sustainable HVAC installations designed for everyday life — in Montreal , Laval , Longueuil , on the North Shore and the South Shore .