A clean and durable HVAC upgrade on a typical Rosemont brick facade
At AirGreen , we place as much importance on performance as on finish . On this Rosemont–La Petite-Patrie plex, we installed a GREE wall-mounted heat pump (R-32 range) designed to offer four-season comfort, while respecting the character of the building: red brick facade, white metal arches and balconies. The result combines energy efficiency , silence and aesthetic integration .
Project context and comfort objectives
The owner wanted:
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stabilize the temperature of living areas in summer and winter;
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reduce operating costs compared to traditional electric heating;
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preserve the aesthetics of the facade visible from the alley and the balcony;
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limit the footprint in order to keep the passage clear.
The solution chosen : a recent GREE wall-mounted heat pump operating on R-32 refrigerant , installed on wall brackets to free up the floor and secure the equipment during snowy periods. This range is distinguished by its inverter compressor , intelligent defrosting and capacity maintenance in cold weather - advantages perfectly suited to the climate of Greater Montreal .
Outdoor installation: wall supports and air circulation
We fixed the GREE condenser on galvanized brackets with anti-vibration pads , at a height providing:
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a clearance above the snow level ;
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free condensate drainage ;
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protection against impact and debris.
The facade already houses an old neighboring appliance. We therefore scrupulously respected the recommended side and rear clearances to ensure optimal air circulation and avoid any recirculation of hot air in heating mode. The anchors are sized for solid brick; the stainless steel fasteners are resistant to freeze/thaw cycles.
Connection path: brown capping harmonized with the brick
The refrigerant lines , communication wiring and condensate drain follow a short, straight route . We installed brown capping forming a vertical then horizontal L , perfectly aligned with the face of the joints. This choice:
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protects insulation and bends against UV rays;
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standardizes the visual reading of the facade;
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facilitates future HVAC maintenance .
The drilling was carried out with a controlled slope for the gravity flow of condensates, which avoids the addition of a pump and reduces noise and maintenance.
Indoor unit: homogeneous diffusion and maintenance access
The wall-mounted fan head is positioned to blow freely across the living area, without obstructing curtains or traffic. The location allows sufficient clearance for maintenance operations (filter cleaning, fan inspection, electrical measurements). This placement, combined with Inverter modulation , provides stable airflow and perceptible comfort at low speeds, with very low noise levels .
AirGreen Methodology: Measurable Quality, Sustainable Results
Our HVAC installation protocols are standardized and verifiable:
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Flares & torques : calibrated flares, torques tightened using a torque wrench according to the diameter of the lines.
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Nitrogen pressurization : prolonged leak test, followed by holding at rest to confirm the absence of a drop.
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High vacuum : descent below 500 microns , stabilization and rise test to guarantee dehumidification of the circuit .
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Settings : configuration of modes, fan speed, shutter, and checking of blowing temperatures .
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Electrical safety : dedicated circuit breaker, wiring compliant with the Quebec Building Code and the CEC .
These steps ensure compressor longevity and stable performance season after season.
Expected performance and energy savings
GREE 's R-32 range offers:
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a high SEER/SEER2 to reduce summer consumption;
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an advantageous HSPF/HSPF2 which reduces heating costs;
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reliable operation at low temperatures thanks to electronic injection control and optimized defrosting.
Based on typical usage in Montreal , the savings compared to simple electric baseboard heaters are significant, especially when the unit operates at reduced speed to maintain the set point.
Grants and Eligibility
Recent Energy Star-certified wall-mounted heat pumps capable of maintaining their capacity in cold weather may be eligible for assistance programs in effect in Quebec. Our team assists customers in documenting the criteria for the installed model and preparing the necessary parts upon request, whether you are in Montreal, Laval, Longueuil, on the North Shore or the South Shore .
Salient technical details of this installation
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Type of dwelling : Rosemont brick plex, balcony and side arches.
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Support : wall brackets with anti-vibration pads, stainless steel screws.
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Route : vertical + horizontal brown capping , sloping drilling, gravity drain.
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Line length : short, reducing load losses and improving seasonal efficiency .
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Winter management : sufficient rear clearance and basement to avoid snow accumulation; no recirculation of hot air thanks to the spacing respected.
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Coexistence of equipment : taking into account the old neighboring condenser ; separate and independent air flows.
Maintenance recommended by AirGreen
To maintain performance:
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Cleaning the internal filters every 4 to 8 weeks during periods of intensive use;
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Annual inspection : condenser coil, condensate pan, electrical connections, pressures and temperatures;
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Clearance : keep 60 cm or more around the condenser, clear snow in winter;
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Capping : check the integrity of the junctions after extreme cold.
Our HVAC maintenance contracts cover Montreal, Laval , Longueuil , the North Shore and the South Shore , with seasonal reminders and supporting measurement reports.
Pitfalls to avoid in a brick facade context
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Leaky holes : risk of infiltration; we apply compatible sealant and waterproof sleeve outlet.
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Lines too long : reduced capacity; here, we have opted for a direct route .
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Insufficient condenser height : exposure to snow and splashes; brackets provide a lasting solution.
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Spacing ignored between two condensers: air recirculation; we have optimized the positioning to preserve efficiency.
Result: comfort, silence and respected facade
The customer now benefits from:
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stable heating at negative temperatures, without consumption peaks;
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rapid and uniform cooling in summer;
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low sound level thanks to the inverter compressor and fine modulation;
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with a clean visual integration , the brown capping blending naturally into the brick.
Why AirGreen
We combine engineering , execution and service . Our team is proficient in the installation of wall-mounted, multi-zone and central heat pumps , as well as complete HVAC maintenance . We respond quickly in Montreal , Laval , Longueuil , on the North Shore and the South Shore , with transparent technical reports and optimization advice tailored to each building.
AirGreen places measurable quality at the heart of every intervention: nitrogen tests, controlled vacuum, documented adjustments and clean finishes. This GREE installation in Rosemont–La Petite-Patrie is a concrete demonstration: lasting comfort , controlled aesthetics and optimized consumption for a well-designed Montreal home.