An exemplary urban exterior layout: performance, discretion and controlled clearances
At AirGreen , we installed a Sharp Eco Inverter wall-mounted heat pump in a typical Rosemont–La Petite-Patrie plex. In this narrow courtyard lined with brick and metal beams, the objective was clear: maintain free airflow for the condenser, reduce noise pollution for the immediate neighborhood, and ensure easy maintenance year-round, without encroaching on circulation space.
Equipment choice: Sharp Eco Inverter with R-32
The Sharp Eco Inverter range stands out for:
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inverter technology that finely modulates capacity to follow the actual thermal load;
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the use of R-32 refrigerant (class A2L) , with reduced GWP compared to R-410A;
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Plasmacluster ionization on the indoor head, useful for maintaining healthier indoor air quality;
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a contained noise level on the exterior side, appreciated in Montreal alleys and courtyards;
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high seasonal returns allowing access to financial assistance programs in Greater Montreal .
For urban housing with load-bearing brick walls and limited clearances, this efficiency/compactness combination meets the site's constraints precisely.
Condenser installation: clearance rules and raised base
The condenser is raised on an anchored metal support , in order to:
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maintain effective defrosting in winter;
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stay above the snow accumulation ;
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limit the re-entry of dust and debris.
We respected the necessary clearances on the sides and, especially, on the blowing facade, avoiding the corner returns that sometimes create the guardrails and blind walls. The silent blocks limit the transmission of vibrations in the structure, an important element for the solid brick walls of the Rosemont plexes.
Good AirGreen reflex : when the location requires a niche, we aim for a generous front opening and sufficient return height . This is the best way to maintain the low static pressure required by axial fans in residential condensers.
Refrigerant and power supply path: cleanliness and future service guaranteed
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Refrigerant lines : optimized length and controlled bend radii to respect equipment limits;
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Fittings : calibrated flares and torques ;
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Leak-proofing : nitrogen test followed by deep vacuum ;
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Power supply : dedicated circuit with external circuit breaker accessible for HVAC maintenance;
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Internal condensate : evacuation by gravity slope when the architecture allows it, in order to avoid a pump and the additional maintenance it requires.
The protective sheaths/capping are aligned with the masonry lines for a clean visual reading and rapid subsequent interventions.
Urban site specificities: brick, neighborhood and Montreal winter
In a dense environment , every detail counts:
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Blowing orientation : we favored a clear facade, away from the re-entrant angles;
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Snow and ice : the installation height and the metal platform prevent the bottom of the unit from icing up;
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Technician access : space provided in front of the condenser for annual maintenance (expansion, pressures, battery cleaning);
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Water management : slightly sloping floor to drain defrost water away from traffic.
These choices ensure stable performance in January and July, without unwanted noise or recirculation of hot air.
Inside: regular diffusion and comfort near the windows
The wall-mounted fan is sized to cover the main living area. Set to horizontal sweep , it compensates for losses through glass walls and maintains a low temperature gradient in the room. In summer, the dehumidification mode improves the thermal sensation without overcooling, an asset during humid periods in Montreal.
Commissioning: what we systematically check
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Vacuum draw to the required threshold and stabilization;
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Release of R-32 fluid and control of intensities ;
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Temperature differentials in heating and air conditioning;
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Checking the orientation of the shutters and user instructions;
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Training : filters, cleaning, seasonal usage tips.
Result: rapid temperature rise, stable setpoint maintenance and controlled noise levels.
Savings and subsidies in Greater Montreal
R-32 wall-mounted heat pumps like the Sharp Eco Inverter meet the criteria of many assistance programs in Montreal, Laval, Longueuil, North Shore, South Shore . Our team:
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validates eligibility based on power and yields;
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prepares supporting documents ;
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schedules installation to coincide with funding windows .
The objective: to reduce the net cost of the project and maximize amortization through energy savings.
HVAC Maintenance: Simple Routine for Lasting Performance
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Filters : monthly rinsing during periods of intensive use;
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External battery : gentle rinsing of the condenser in spring;
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Clearances : keep 60–90 cm clear at the front and 30 cm at the sides;
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Annual inspection : checking connections, measuring refrigeration parameters, checking for leaks .
Regular maintenance keeps consumption low and extends the life of the compressor.
AirGreen Tips for Brick Courtyards and Balconies
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Elevate the condenser and avoid closed corners;
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Provide a snow cutter if the unit is exposed to snow drifts;
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Avoid improvised deflectors that are too close, which would send hot air back towards the grille;
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Install an external circuit breaker within reach of the technician;
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When renovating masonry, protect the condenser fins from mortar dust.
These measures ensure exemplary reliability in the real conditions of Montreal plexes.
Balance sheet
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Location : Rosemont–La Petite-Patrie (Montreal) .
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Type : Sharp Eco Inverter wall-mounted heat pump ( R-32, A2L refrigerant).
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Exterior installation : raised metal base , clearances respected, silent blocks ; brick masonry.
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Route : optimized lengths, high vacuum , complete controls.
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Result : stable comfort, reduced noise level , lower operating costs and simple maintenance .
AirGreen, your HVAC partner in Montreal and surrounding areas
We support owners and condominium associations in Montreal , Laval , Longueuil , on the North Shore and the South Shore . From load study to commissioning, our commitment remains the same: a clean, sustainable and efficient installation , perfectly adapted to the local architecture.