A high installation on a brick facade, designed for reliability, silence and maintenance access
At AirGreen , we design sustainable HVAC installations that respect both the building and the neighborhood. In a Rosemont–La Petite-Patrie complex, our team installed a Gree wall-mounted heat pump ( R-32 Inverter family) with a condenser attached to brackets on the brick rear facade. The goal: to provide four-season comfort , optimize the floor space of the passageway, and simplify HVAC maintenance operations.
Building context and choice of positioning
The building features brickwork and closely spaced openings (windows/doors). We chose a high wall mounting system for:
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Clear the ground and avoid impacts (garbage bins, bicycles, snow removal).
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Reduce snow accumulation in the fan in winter.
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Facilitate the flow of defrost water under the unit.
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Provide secure accessibility to technicians for maintenance.
The positioning respects the clearances around the air intake and the blower. The orientation prevents recirculation against the facade and limits sound propagation towards the windows.
Technical details of the installation
Support and stability
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Galvanized wall brackets anchored in the brick with mechanical anchors adapted to the substrate.
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Anti-vibration spacers and dampers to limit noise transmission and protect masonry.
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Precisely adjusted level to avoid any stress on the fan frame and bearings.
Food and safety
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External disconnect box installed near the unit for electrical isolation during interventions.
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Dedicated circuit from the indoor panel , sized according to the nominal current of the inverter compressor.
Refrigeration connections
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Short path (wall to wall) reducing pressure losses and refrigerant volume.
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Brazing under nitrogen , leak test , then high vacuum to eliminate moisture and non-condensable gases.
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Continuous insulation of the liquid/suction lines, carefully connected in the service box of the device.
Working height
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Installation carried out on a ladder with a secure support point, then final check from the platform to validate the tightening torques , fixing and cable routing .
Equipment: Gree R-32 Inverter for precise comfort
We have selected a model from the Gree wall-mounted range with R-32 refrigerant . The key advantages:
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Inverter modulation : fine power adjustment, stable temperature and reduced consumption .
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High seasonal efficiency : excellent air conditioning in summer and reliable heating in the shoulder seasons and winter.
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R-32 : lower charge and lower GWP than R-410A, aligned with good environmental practices.
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Quiet operation : optimized fan and rigid frame, ideal for installation near windows.
For a typical plex dwelling in Rosemont, the target power is generally between 9,000 and 18,000 BTU , to be confirmed via a load calculation (surface area, exposure, glazing, sealing, floor). We systematically size before any recommendation.
Implementation steps (AirGreen method)
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Technical survey : verification of masonry , clearances, distance to the electrical panel and neighborhood constraints.
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Sizing : choice of Gree wall-mounted heat pump ( R-32 Inverter family) according to the load and usage profile.
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Preparation of the support : tracing, drilling, anchoring and installation of shock absorbers .
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Lines and electricity : shaping of tubes , brazing, pressurization , high vacuum , installation of the cut-off and continuity/earth tests.
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Commissioning : checking pressures , blowing temperatures , intensities , and checking air flow .
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Customer discount : usage advice (heat/cool modes, ventilation, defrosting) and presentation of the HVAC maintenance plan .
Acoustic and vibration management
Anti-vibration pads and frame alignment reduce transmission to the wall. The airflow is clear of the bay window to limit the noise perceived inside. We recommend keeping 60 to 90 cm free in front of the grille and avoiding any obstacles (awnings, blinds, plants) in the air cone.
Result for the customer
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Immediate comfort in summer and winter, with fine modulation that avoids on/off cycles.
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Clean integration on brick facade, clear floor space and clear service access.
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Stable performance thanks to a short cooling path and a dedicated power supply.
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Easy maintenance via the cut-off box and secure installation height.
Grants and eligibility (case by case)
High-efficiency R-32 wall-mounted heat pumps that can maintain performance in cold weather are potentially eligible for certain assistance programs in Quebec. We validate the eligibility of the chosen model, prepare the documents , and support the deposit to maximize your return.
Maintenance recommended by AirGreen
Regular HVAC maintenance protects the investment and preserves performance:
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Clean the internal filters every 4–8 weeks depending on usage.
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Annual inspection: fasteners , condition of fins , line insulation , wiring and defrost drainage .
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Clearances: Keep the unit free of debris (leaves, frost) and do not obstruct the air intake/outlet .
AirGreen offers maintenance plans tailored to plexes and condominiums for efficient and economical group visits.
Pitfalls to avoid (field feedback)
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Undersizing in very glazed or west-facing rooms → reduced comfort during heatwaves.
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Unsuitable fixings for hollow brick → vibrations and progressive subsidence.
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Tortuous or too long refrigeration path → loss of efficiency and increased refrigerant charge.
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Lack of external cut-off → longer and non-compliant interventions.
With the AirGreen approach, these risks are controlled from the design stage.
AirGreen: your HVAC partner in Greater Montreal
Our teams operate in Montreal , Laval , Longueuil , on the North Shore and the South Shore . Whether you are looking for an individual wall-mounted heat pump , a multi-zone system or a larger project, we provide sizing , installation and maintenance with a constant requirement: measurable quality, clean finishes and technical transparency .
Would you like an estimate for a Gree R-32 Inverter suitable for your home? Contact AirGreen : we'll guide you from the choice to the first breath of air.