An HVAC upgrade designed for 4-season comfort and Montreal winters
Context: a typical Rosemont brick plex facade
In Rosemont–La Petite-Patrie, we are working on a red brick plex with a front entrance sheltered by a small porch. The client is looking to reduce their electricity bill while gaining consistent comfort in both summer and winter. We are proposing the installation of a GREE Clivia R32 12,000 BTU wall-mounted heat pump (recent range with R-32 refrigerant ), known for its performance in extreme cold and its acoustic discretion—a significant asset in the quiet, dense streets of Montreal.
Why the Clivia R32 for this project?
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High efficiency (R-32 inverter) and stable operation down to −25°C , ideal for the Montreal climate.
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Compact outdoor unit makes it easy to integrate near a porch and window without compromising aesthetics.
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Efficient COP in mid-season, allowing low-cost heating and gentle cooling in summer.
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Usual eligibility for current Quebec programs for energy-efficient heat pumps , subject to current eligibility criteria.
Implantation: precision to the nearest centimeter
Choosing an outdoor location
We retain the side wall of the entrance, to the left of the door, to protect the condenser from prevailing winds and snow projections from the street. The unit is placed on galvanized wall brackets approximately 45 cm from the ground (recommended clearance for snow). This positioning:
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clears the passage to the steps and the ramp ;
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ensures unobstructed frontal airflow ;
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simplifies access for HVAC maintenance .
AirGreen handy note : There is an ornamental conifer nearby. We trim the hedge lightly to ensure at least 30–40 cm of side clearance and 60–80 cm at the front for air circulation, which is essential for maintaining compressor performance and longevity.
Route of refrigeration connections
The drilling is done through the brick and insulation, with a slight gravity slope towards the outside to drain the condensate. The light-colored capping (gutter) aligns neatly with the wall corner, which protects the insulated refrigeration lines and the communication cable .
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Estimated total length of connections: 3 to 4 m between interior wall head and condenser.
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Condensates : gravity drainage (no pump required), reducing noise and maintenance.
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Waterproofing : packing and vapor barrier at the piercing to prevent air and moisture infiltration.
Power supply and safety
We install an external disconnect box within easy reach of the unit, in accordance with the requirements. The dedicated circuit (240 V) is protected at the panel by an appropriate circuit breaker according to the nameplate. The wiring follows the capped path for clean integration and optimal mechanical protection .
Inside: discretion and comfort
The GREE Clivia R32 12,000 BTU wall-mounted fan head is installed in the main living area, in a position that promotes airflow along the length of the room. The inverter setting allows the setpoint to be reached without overheating or cold snaps. The shutters direct the airflow to avoid direct drafts in the sleeping areas.
AirGreen Method: rigorous commissioning
Sealing and cleanliness of the circuit
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Flare and torque with the torque meter for each flare connection.
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Nitrogen test (high pressure) to check for leaks.
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Vacuum drawing down to ≤ 500 microns and stabilization to remove residual moisture.
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Factory R-32 charge opening , then control of operating parameters (supply/discharge temperatures, intensity, superheat/subcooling depending on conditions).
Optimization for the extreme cold of Montreal
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Clearance under the unit to allow ice drainage during defrost cycles.
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Checking the defrost mode and sensors .
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Instructions for use: keep the area clear of snow , avoid the accumulation of leaves at the foot of the device.
Result: immediate comfort, lasting savings
From the moment it is switched on, the heat pump maintains a steady and quiet blowing. In air conditioning mode , the Clivia R32 quickly lowers the indoor temperature and controls humidity , which improves the feeling of freshness even in hot weather. In heating mode , the inverter compressor modulates the power to maintain a stable temperature , reducing energy-consuming ON/OFF cycles. The user benefits from a significant reduction in electricity consumption compared to traditional auxiliary heating.
Integration details visible on site
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Support : galvanized wall brackets, mechanical fixings sized for brick.
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Wiring : protected routing in capping; accessible external disconnection .
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Condensates : gravity , without pump (increased reliability and reduced maintenance).
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Aesthetics : clear and aligned chute, respected brick facade .
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Environment : decorative shrub preserved, porch railing intact, free passage.
HVAC Maintenance Tips to Maximize Lifespan
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Clean the wall head filters every 4 to 8 weeks depending on use.
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Condenser clearance : Keep 60–80 cm free at the front; trim the hedge as needed.
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Natural de-icing : never break the ice at the base; let the defrost cycle work.
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Annual inspection by our technicians (electrical checks, pressure, temperatures, deep cleaning).
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Winter prevention : after heavy snowfall, check that the air intake is not blocked.
Common pitfalls to avoid (AirGreen feedback)
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Unit too low : increased exposure to snow; prefer 40–60 cm from the ground.
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Shrubs too close : loss of performance due to recirculation of hot or blocked air.
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Unnecessary link lengths : every meter adds losses; aim for the most direct route .
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Lack of disconnection : non-compliance and difficulty of maintenance.
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Unsealed drilling : risk of infiltration and thermal bridges.
Grants and compliance in Montreal, Laval, Longueuil, North Shore and South Shore
Recent R-32 wall-mounted heat pumps , efficient down to -25°C, usually meet the criteria of current financial assistance programs . We assist our clients with eligibility verification , document preparation , and submission . Our certified teams adhere to local electrical standards and building codes on every job site.
Why AirGreen for your HVAC system?
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Local expertise in Greater Montreal (plexes, condos, single-family homes).
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Selection of recent equipment (R-32 / R-454B) adapted to the Montreal climate .
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Documented and measurable commissioning procedure .
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After-sales service : preventive maintenance, diagnostics, original parts.
Project summary technical sheet (useful to the owner)
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Type : mini-split wall-mounted heat pump .
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Make / Model : GREE Clivia R32 .
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Typical capacity : 12,000 BTU (suitable for the main living area of a Rosemont home).
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Installation : brick facade, wall brackets , standard clearances.
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Route : 3–4 m connections, clear capping , gravity condensates .
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Electrical : 240 V, external disconnection .
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Climate : performance down to −25°C (efficient heating).
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HVAC maintenance : filter cleaning, condenser clearance, annual inspection.
And now ?
In Rosemont–La Petite-Patrie, as elsewhere in Montreal , Laval , Longueuil , the North Shore and the South Shore , we size and install heat pumps , taking into account local architecture (brick facades, narrow porches, snowy areas). Would you like a precise quote for your HVAC installation ? Our technical team will come to you, assess clearances, advise on location, estimate energy savings and assist with grant applications .
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