High-end comfort in co-ownership: a neat, quiet HVAC installation designed for the realities of residential towers in the Montreal archipelago.
The context: a condo, real constraints, a net result
In Île-des-Sœurs , in a condominium with unobstructed views, our client wanted a wall-mounted heat pump solution capable of providing efficient air conditioning in the summer and reliable heating support in the mid-seasons, without encroaching on the space or disturbing the peace and quiet of the neighborhood. We chose a Sharp with Eco Inverter technology with Plasmacluster , for its fine modulation, its sound discretion and its measurable contribution to indoor air quality .
Device, configuration and sizing philosophy
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Type: single-zone wall-mounted heat pump .
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Brand: Sharp , Eco Inverter range with Plasmacluster ionization.
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Capacity: determined from a load calculation (useful surface area, orientation, glazing/wall ratio, infiltration, concrete floor/ceiling).
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Performance objectives: temperature stability, resistance to low temperatures for backup, controlled electricity consumption.
At AirGreen, we don't oversize. The right BTU is neither "big" nor "small," it's just right : it's what prevents short cycles, protects the inverter compressor, and ensures consistent comfort room after room.
Interior integration: high, straight, efficient
The wall-mounted fan is installed high under the ceiling , above the bay window, for wide diffusion without direct air currents. We have respected the recommended clearances (rear, top and sides) to optimize suction and simplify maintenance.
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Shutters and air blades: adjusted to sweep the ceiling and break the cold wall effect of the glazing, with a slight inclination in heating mode to promote air mixing and avoid stratification.
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Discreet cladding: a compact capping accompanies the exit of the refrigeration connections near the lintel; its light color harmonizes with the walls and blends into the line of the blinds.
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Filter access: we have validated a free travel for opening the hood, making cleaning the filters simple for the owner.
AirGreen tip for glass condos: in summer, tilt the shutter slightly toward the ceiling to limit direct airflow onto the living area; in winter, raise it a little less so that the treated air gently “scrapes” the cold surface of the windows.
Refrigeration path and condensate management
We have chosen a short and direct route to the outside, crossing the wall with a watertight wall pass-through and a controlled slope.
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Estimated line length: ≈ 2–3 m , which reduces load losses and improves seasonal efficiency.
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Continuous insulation of the refrigerator connections, careful sealing of the crossings and vapor barrier on the interior side.
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Condensate: integrated gravity drain with constant minimum slope; a non-return valve prevents any odor or air ingress. The condensate pump option remains possible but has been avoided here in favor of simplicity and reliability.
Exterior installation coordinated with the co-ownership
The compact outdoor unit is positioned on a raised, unobstructed rigid support , in accordance with the condominium association 's guidelines (sizes, noise, aesthetics).
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Raising and clearances : free space around the propeller to ensure full capacity, easy access for maintenance and de-icing.
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Vibrations and sound transmission : anti-vibration mounts and torque tightening of connections; thoughtful orientation to direct airflow away from sensitive areas.
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Winter management : the space under the unit is left free for ice evacuation during defrost cycles.
Electricity and protection: compliance without compromise
The heat pump has a dedicated circuit for the panel (compliant rating), an external disconnect switch for maintenance and a verified grounding . We check the permissible voltage drop on the circuit and the quality of the tightening at the terminal block in order to protect the inverter electronics.
Key steps of our method
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On-site survey (solar gains, obstacles, possible paths).
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Co-ownership validation : aesthetic and acoustic compliance, choice of support.
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Clean drilling with gaskets, vapor barrier and interior/exterior finish.
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Installation of connections : precise bending, brazing/crimping according to specifications, deep vacuum and leak testing.
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Electrical connections and controlled power-up .
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Commissioning : checking pressures, sensors, calibrating valves, setting modes and explaining usage to the owner.
Results for the client
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Silence and comfort : low noise level, particularly appreciable at the end of the evening in a condominium environment.
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Air Quality : Plasmacluster ionization helps reduce some odors and keep filters cleaner longer.
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Energy savings : fine modulation of the compressor and short refrigeration path for low consumption.
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Visual discretion : clean integration above the window, minimalist capping.
HVAC Maintenance: The Simple and Effective Plan
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Every 2–4 weeks in summer: remove and clean the filters (warm water, dry thoroughly).
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Annual : AirGreen inspection (pressures, subcooling/overheating, fans, probes, tightening, deep cleaning), disconnect switch check, drain validation.
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Winter : Clear the outdoor unit area after heavy snowfall and avoid storing objects in front of the suction.
Points of attention in co-ownership (and how we manage them)
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Regulatory noise : location selection and low-noise settings; verification of the announced dB(A) and positioning in relation to neighboring windows.
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Waterproofing : continuous air barrier, UV exterior sealant, controlled drain slope.
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Fire and structure : respect distances to combustible materials and use of appropriate anchors for concrete/masonry.
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Service access : hatches and clearances provided for maintenance without disrupting the occupancy of the accommodation.
Grants and Eligibility
High-efficiency heat pumps may be eligible for assistance programs in Quebec. Eligibility depends on the low-temperature performance and technical specifications of the installed model. We support our clients in Montreal , Laval , Longueuil , the North Shore , and the South Shore to verify criteria, prepare documents, and maximize financial returns when the configuration is suitable.
Usage tips for lasting comfort
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Stable instructions : limit variations of several degrees; the inverter excels in consistency.
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Blinds and clearances : maintain a space in front of the vent so as not to restrict the suction; adjust the slats to guide the air along the ceiling.
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Auto vs. Heat/Cool mode : Use Cool in summer and Heat in mid-season; reserve Auto for the off-season without significant amplitudes.
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Interior doors : leave open for a few minutes to even out temperatures.
Why AirGreen for your project in Île-des-Sœurs and Greater Montreal?
Our team understands the realities of high-rise buildings and condominiums : approvals, noise, access, crossings, and security. We deliver clean, efficient, and durable facilities, supported by responsive after-sales service throughout Greater Montreal .
Are you considering installing a wall-mounted heat pump in a condo in Montreal or Nuns' Island? We handle the thermal analysis, capacity selection, co-ownership compliance, and commissioning for year-round comfort.
Keywords: heat pump , wall-mounted heat pump , HVAC installation , HVAC maintenance , Sharp , Montreal , Laval , Longueuil , North Shore , South Shore .