A quiet and precise HVAC solution for a bright living room overlooking the courtyard
Project context: 4-season comfort in a Villeray plex
In a typical Villeray–Saint-Michel–Parc-Extension home, we are modernizing the thermal comfort of a living space that opens onto the backyard. The main room benefits from a large French window with Venetian blinds , a source of sunshine in the summer… and variable solar gains the rest of the year. To stabilize the temperature, reduce summer humidity and heat efficiently in the off-season, we recommend aSharp wall-mounted heat pump with R-32 refrigerant , sized for approximately 12,000 BTUs depending on the surface area and insulation of the main level.
Why choose Sharp for this HVAC installation
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High efficiency thanks to the inverter compressor and R-32, which promotes energy efficiency.
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Careful acoustics : the wall head emits a uniform breath, ideal for a living room adjacent to the dining area.
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Reliability in cold climates : maintains good heating capacity at low temperatures, suitable for Montreal , Laval , Longueuil , as well as the North Shore and South Shore sectors.
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Discreet design blending into the light-colored living room wall, with a motorized shutter ensuring precise airflow .
Our goal: stable comfort without direct air currents on the sofa or noisy triggers, while limiting electricity consumption.
Interior integration: strategic position above the French window
Wall Head Location
We place the unit at the highest point of the wall , aligned with the lintel of the French window. This placement:
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frees circulation and protects the device from shocks;
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optimizes stratification : warm air in winter is taken up high then redistributed evenly;
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allows for lateral sweeping of the room without blowing directly onto the seating area.
Airflow management
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Orientation of the shutters so as to cover the length of the living room, then the dining area.
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Programming a silent mode for evenings; gradual increase in power during heat waves.
Condensates and finishes
The condensate drain follows a regular slope towards the outside for reliable gravity drainage . The opening is sealed (fire-resistant and vapor-resistant foam) to prevent any air infiltration. The connection passages are covered with discreet, easily washable capping.
Outdoor route and power supply
Refrigeration connections
From the wall head, the most direct route is preferred towards the rear or side facade. We voluntarily limit the total length (approximately 3 to 5 m depending on access) to reduce pressure losses and preserve seasonal efficiency .
Outdoor unit and clearances
The condenser is fixed on brackets or on a slab depending on the configuration, respecting the recommended clearances:
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60–80 cm clear at the front;
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30–40 cm lateral;
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40–60 cm from the ground in snowy areas to limit burial and facilitate defrosting .
Electricity and safety
We install a visible and accessible exterior disconnect . The circuit is dedicated to the electrical panel, calibrated according to the Sharp nameplate. The wiring runs protected in the exterior capping for a clean and durable finish.
Sizing: AirGreen method for a fair choice
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Thermal survey : volume to be treated, quality of insulation, sealing of joinery, adjacent levels.
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Occupancy profile : hours of sunlight through the patio door, supplemental heating habits.
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Permissible noise : selection of fan speeds and usage scenarios (evening/night).
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Power reserve : reasonable margin for weather extremes without oversizing.
Result: a heat pump of around 12,000 BTU for the main level, controlling humidity and temperature with optimized consumption .
Commissioning: rigor and traceability
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Flaring carried out with a torque meter; visual checks of the bearings.
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Nitrogen pressure test to check for leaks.
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Vacuum drawing down to ≤ 500 microns , stabilization and measurement.
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Factory R-32 charge opening and checks: amperage, discharge temperatures, delta T, superheat/subcooling as conditions dictate.
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User settings : instructions, oscillation, weekly programming, filters and maintenance messages.
Measurable comfort from day one
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In air conditioning , the wall head quickly lowers the temperature while reducing the relative humidity ; the feeling of freshness improves without having to lower the set point excessively.
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In heating , inverter modulation maintains thermal stability and limits cycles, guaranteeing savings and longevity.
HVAC Maintenance: Our Recommendations for Long-Lasting Performance
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Filters : dust every 4 to 8 weeks depending on use and the presence of animals.
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Condenser : Regular clearing of snow and debris; do not obstruct the front.
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Annual thorough cleaning : interior exchanger, blower, condensate tray, electrical check.
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Usage modes : prefer stable instructions and continuous operation at low speed rather than repeated starts/stops.
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Heatwave periods : favor an early start in the morning to smooth out the load.
Pitfalls to avoid (AirGreen feedback)
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Indoor unit too low : visual disturbance and reduced efficiency. Installation in the upper part remains the best compromise.
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Direct blowing towards the table or sofa : would cause discomfort; hence the fine orientation of the shutters.
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Drain without slope : risk of backflow; gravity remains the reference when the configuration allows it.
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Exposed unprotected wiring : exposure to UV and shocks; capping guarantees durability over time.
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Oversizing : short cycles, noise and consumption increase. We adjust the capacity to the thermal reality of the housing.
Grants and Compliance
Recent R-32 wall-mounted heat pumps with low-temperature performance generally meet the financial assistance programs in effect in Quebec. We assist our clients in Montreal , Laval , Longueuil , North Shore and South Shore with eligibility , documentation and submissions . All our installations comply with electrical codes and manufacturer-required clearances.
Summary site sheet
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Type : mini-split wall-mounted heat pump .
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Brand : Sharp (recent model with R-32, typical capacity 12,000 BTU).
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Interior installation : in the upper part , above the French window, shutter oriented to cover the living room and dining room.
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Route : short connections (≈ 3–5 m), harmonized interior/exterior capping , gravity condensates .
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Exterior : condenser on brackets/slab with standard clearances; disconnection nearby.
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Objectives : 4-season comfort, humidity control, energy savings .
Why AirGreen
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Local expertise in Montreal buildings (plexes, houses, condos).
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Selection of R-32 / R-454B equipment suitable for extreme cold .
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Documented commissioning process , supporting metrics.
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Structured after-sales service : preventive maintenance, rapid diagnostics, original parts.
Are you considering a similar HVAC installation in Villeray or another Greater Montreal neighborhood? Our team will assess your location on-site, recommend the optimal location , estimate savings , and assist with grant applications .