Precise comfort in a room with high ceilings: a clean and sustainable interior integration, carried out by AirGreen
In a bright apartment in Villeray–Saint-Michel–Parc-Extension , our team installed a Samsung wall-mounted heat pump (R-32) to stabilize the temperature of a bedroom/office overlooking the courtyard. The client's objective was clear: efficient summer cooling , reliable supplemental heating in winter , and quiet operation , all with careful installation that respected the minimalist aesthetic of the room.
Why this choice of device is essential in the Villeray residential park
Housing in the area often combines interior gypsum walls , raised doors and windows overlooking trees or balconies . In this context, a recent wall-mounted heat pump with R-32 refrigerant offers:
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High seasonal efficiency thanks to the Inverter compressor, which modulates power and avoids energy-consuming short cycles.
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A contained noise level , essential for a room with mixed use (work, rest).
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Precise directional blowing to cover the area evenly without unpleasant drafts.
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Reduced environmental impact compared to older generations with R-410A.
The capacity chosen for this type of room is generally around 9,000 to 12,000 BTU , subject to the load calculation carried out on site (surface, insulation, orientation, air infiltration, presence of electronic devices and occupants). We always size the machine to the actual need , never on instinct.
Room analysis: ceiling height and centered door
The room has a clear white ceiling , an interior door positioned under the unit and a window overlooking the courtyard providing moderate solar gain. Our technical priorities:
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Maintain sufficient overhead clearance for free air intake and easy access to filters.
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Direct the blowing towards the useful volume, without direct impact on the occupied area near the door.
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Optimize the gravity drain path to reduce maintenance and noise risks.
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Minimize the length of refrigerant lines to maintain efficiency and simplify future interventions.
Installation details: a readable AirGreen signature in each finish
Implantation of the inner head
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Installation in the upper part , level , respecting the clearances recommended by the manufacturer.
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Fixing to reinforcements in the partition, with anchors suitable for gypsum; tightening torque control to avoid vibrations.
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Airflow management : orientation of horizontal flaps for transverse sweeping of the room; adjustment of vertical flaps to limit the impact on the passage area above the door.
Connections, drilling and drain
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Single hole through the exterior wall with insulated sheath and peripheral sealing (closed cell foam + mastic), limiting thermal bridges and air inlets.
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Gravity drainage with continuous slope towards the outside; no condensate pump required, therefore less maintenance and no noise pollution.
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Short refrigerant lines and communication cabling neatly routed outside to reach the condenser; exterior capping harmonised with the façade (laid with a line, clean angles).
Power supply and compliance
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Dedicated circuit according to the appliance's nominal currents, calibrated circuit breaker and connection box positioned for safe service access.
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Implementation compliant with RBQ / CSA requirements, with clear identification of conductors.
Commissioning
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Nitrogen leak test , deep vacuum until stabilization, then release of the load according to the actual length of the connections.
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Functional checks : delta T in cold and hot conditions, absorbed intensity, communication between cards, shutter response.
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Customer briefing : filter cleaning, Auto/Heat/Cool modes, humidity management, seasonal best practices.
Measurable result for the client
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Uniform temperature without noticeable stratification thanks to the head elevation and optimized sweeping.
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Minimal noise at low speeds, compatible with teleworking and sleeping .
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Controlled consumption : the machine stabilizes the thermal load instead of chaining full-throttle starts.
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Aesthetics respected : no visible trunking inside, invisible connections and perfectly aligned equipment.
What we systematically monitor in a room like this
Sizing
Oversizing by 30-40% would cause short cycling , poor humidity management and premature wear. Our load calculation takes into account solar gains through the window , air permeability and actual occupancy.
Air return and obstacles
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No shelf or molding near the top of the unit.
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No vertical obstacles within the minimum lateral distance (bookcases, projecting uprights).
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Temperature sensor control to avoid readings skewed by door airflow.
Drain
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Slope > 1%, siphon if required by the external configuration, anti-freeze protection at the passage.
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Flow test with clear water before closing the finishes.
Vibes
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Checking the partition wall , installing spacers if necessary, silent blocks on the condenser side.
HVAC Maintenance: Keeping Performance at Day 1 Levels
Proper HVAC maintenance extends performance:
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Filters : rinse every 4 to 8 weeks during heavy use.
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Annual inspection : exchanger, condensate tray, fan, probes; electrical tightening ; visual inspection of external connections.
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Dust prevention : avoid obstruction around the unit; dust the room before heat waves.
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Winter : clear the outdoor condenser area (snow, ice), keep clearances for air intake/expulsion.
We offer maintenance plans with proactive reminders and visit reports to preserve seasonal indices and the lifespan of the device.
Grants and technical files
Recent R-32 wall-mounted heat pumps can qualify for financial assistance when the SEER/SEER2 and HSPF/HSPF2 ratings are at the required level. We support our customers in:
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Verification of the eligibility of the installed model.
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Collecting evidence (serial numbers, installation photos, detailed invoices).
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Submission of the file within the deadlines announced by the programs in force.
AirGreen Tips for Rooms with Aligned Doors and Windows
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Position the head so that it blows parallel to the natural airflow rather than directly onto the occupant.
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Respect the ceiling distance to preserve air intake and avoid immediate recirculation.
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Favor gravity drain ; the condensate pump remains a solution of last resort.
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Take into account actual solar gains (curtains, blinds, trees) to adjust the sizing.
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Provide service access from the design stage: filters, front cover, fixing screws, space for instruments.
AirGreen: methodology, finishes and local monitoring
Our approach can be summed up in three clear steps:
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On-site technical study with load calculation and connection layout.
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Clean and compliant HVAC installation , neat finishes inside and out.
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Documented commissioning and support during the first season of use.
We operate weekly in Montreal, Laval, Longueuil, North Shore and South Shore , with teams continuously trained on the R-32/R-454B generations and the winter requirements of Greater Montreal .
AirGreen — Wall-mounted heat pumps: installation, maintenance and HVAC modernization throughout Greater Montreal.