A discreet and robust integration into a typical Montreal plex
At AirGreen , we have just completed the installation of a Sharp Eco Inverter wall-mounted heat pump in a brick plex in Plateau-Mont-Royal . The building features all the charm and complexity of Montreal's alleyways: a spiral steel staircase , aligned openings, a narrow courtyard, and limited circulation for equipment. Our mission: to deliver a reliable, quiet, and aesthetically pleasing HVAC system without disrupting the occupants' lives or access to emergency exits.
Why the Sharp Eco Inverter for this project
The Sharp Eco Inverter range features a variable-speed compressor and Plasmacluster Ion technology, which is popular for its indoor air quality. Whether used for air conditioning or supplementary heating, the inverter's fine-tuned regulation limits temperature variations and reduces consumption during mid-seasons. In an average-sized urban home, this usage profile ensures stable comfort and measured acoustics .
Highlights for this type of housing:
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Continuous modulation : the device adapts its power to actual loads, useful during rapid weather changes in Montreal .
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Advanced indoor filtration (Plasmacluster): an asset for families sensitive to air quality.
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Compact condenser format : makes it easy to install on wall brackets in narrow alleys.
Capacity: BTU selection was carried out after simplified load assessment (orientation, insulation, sealing, windows). The sizing avoids overflow in summer and underperformance in the off-season.
Installation details: precision, durability, compliance
Support and implementation
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Fixing on galvanized expansion brackets , anchored in the solid brick with suitable spacers: load-bearing and anti-tearing capacity verified.
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Rear and side clearance respected for air sweeping and maintenance.
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Height above ground designed to remain out of the water and blown snow accumulation zone, without encroaching on traffic under the spiral staircase .
Refrigeration and electricity route
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Set of refrigerant lines (approximately 3.5 m on this project) continuously insulated and capped vertically for a clean finish along the downspout.
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Outdoor disconnect box located within easy reach of the technician, dedicated wiring from the panel, rating and circuit breaker compliant with the Canadian Electrical Code.
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Single hole with watertight bulkhead and adequate slope for gravity drainage of condensate on the inside; no condensate pump required here.
Anti-vibration and acoustic
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Anti-vibration pads under the condenser base and neoprene washers at the support points: transmission of vibrations to the masonry greatly reduced, beneficial for adjoining neighbors.
Resistance to local climate
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The wall's orientation and natural deflectors limit exposure to winter wind. Connections are sheathed and sealed to prevent infiltration and frost on the connections.
Plateau Constraints and Team Solutions
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Limited space between wall, windows and staircase: we measured the actual space on site and simulated the opening angles of the leaves to validate the final position.
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Fire evacuation route to be preserved: the device is installed outside the passage gauge with a regulatory setback, and maintenance is carried out from a secure work surface.
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Potential noise pollution in the interior courtyard: choice of reinforced + anti-vibration supports, and fine adjustment of the fan during commissioning in order to maintain a low noise level at idle.
Result for the occupants
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Even cooling on the ground floor, without “cold drafts”.
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Effective additional heating during spring and autumn temperature fluctuations.
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Smoothed consumption thanks to the inverter: longer cycles, reduced intensity, better COP at partial load.
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Aesthetics respected : sober capping matching the descent, minimal visibility from the alley.
Practical advice and pitfalls to avoid for this type of building
Size up before you buy
Oversizing increases short cycles; undersizing forces the machine to run at high speeds, resulting in noise and wear. We systematically carry out a thermal assessment that takes into account the year of construction, windows, and sealing.
Take care of the exterior implantation
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Avoid closed-back areas (corners, alcoves) which recycle hot air in summer.
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Keep ≥ 30 cm under the appliance to evacuate snow and limit frost.
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Provide sufficient frontal clearance for interventions (reel washing, service maneuvers).
Think about the path of the condensates
In brick plexes, gravity remains the most reliable solution: continuous slope, watertight bulkhead, accessible drain. Condensate pumps are only used as a last resort (noise, maintenance).
Electricity and compliance
Dedicated circuit, suitable gauge, compliant circuit breaker ; the disconnect box must remain clear. Improvised wiring is a common cause of breakdowns and insurance denials.
Recommended HVAC maintenance
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Cleaning the filters and the internal exchanger every season.
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Gentle washing of the external battery; control of pressures and intensity in test mode.
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Checking the tightness of the hoods and the seating of the brackets after winter.
Grants and Eligibility
High-performance wall-mounted heat pumps may be eligible for provincial subsidies (e.g., energy efficiency programs). Eligibility depends on the specific model , operating temperatures, and current standards . We assist our clients in preparing the application and optimizing related work (caulking, infiltration control) when this improves the energy balance.
Why entrust your installation to AirGreen?
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Greater Montreal specialists : daily interventions in Plateau-Mont-Royal , Rosemont , Le Sud-Ouest , Laval and the South Shore/North Shore .
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Construction method adapted to alleys: compact lifting, facade protection, neighbor management.
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Installation guarantee and responsive after-sales service : usage advice, HVAC maintenance reminders, availability during hot weather.
In short
This Sharp Eco Inverter wall-mounted heat pump installation in Plateau-Mont-Royal combines performance , silence and durability in a tight urban environment. The wall-mounted bracket installation, clean hooded path and electrical compliance ensure years of reliable service, with controlled consumption and immediate comfort for occupants.