A discreet installation on a wooden terrace, designed for 4-season comfort and peace and quiet for the neighborhood
Context
In a typical Rosemont–La Petite-Patrie plex, we are installing a new-generation GREE R-32 wall-mounted heat pump for an upstairs apartment. The outdoor condenser sits on a wooden deck at the back, against a brick wall with screens. The goal: to achieve reliable heating in winter, quiet air conditioning in summer, and a neat integration into a living space shared with neighbors.
Why choose a GREE R-32 wall-mounted heat pump?
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Optimized seasonal performance thanks to R-32 refrigerant, less charged and more efficient than previous generations.
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Continuous modulation inverter : the machine precisely adjusts its capacity, limiting peaks and stabilizing the interior temperature.
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Cold reliability adapted to the Montreal climate, with capacity maintained during freezing episodes.
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Easy HVAC maintenance : clear access to components and complete commissioning documentation for long-term monitoring.
Installation and support: protect the structure, preserve the acoustics
Raised support
We place the unit on a galvanized metal base , with silent blocks under the feet to decouple vibrations from the decking. The elevation:
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keeps the device above snow and defrost water;
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makes cleaning the terrace easier;
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releases air suction and discharge to prevent recirculation.
Clearances and neighborhood
The side fence requires special attention to clearances. We respect the manufacturer's recommended distances on the rear and sides, and we direct the airflow to reduce the noise impact perceived by the immediate neighbor. In this type of backyard, every centimeter counts: precise placement makes a difference on a daily basis.
Refrigeration and electricity: clean, protected, sustainable
Refrigeration connections covered
The connections exit the right casing, descend in UV-resistant capping to the point of penetration.
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Vapor barrier and waterproof sleeve at the brick wall passage to preserve the envelope.
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Curvature radii respected and continuous insulation to maintain performance.
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Capping and fasteners chosen to match the brick/wood aesthetic , with a discreet tint.
Power supply and disconnection
The unit is connected to a dedicated circuit from the housing panel. An accessible external disconnect switch is added near the unit, complying with safety requirements and convenient for maintenance.
Commissioning: The invisible quality that changes everything
Rigorous commissioning is essential for long-term performance.
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Flares calibrated with a torque meter, support face control and suitable lubrication.
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Nitrogen test (pressurization) with verification of resistance and pressure drop.
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Deep vacuum by vacuum pump to the required level, maintenance and control of rise to expel humidity and non-condensables.
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Opening of valves , measurement of superheating/subcooling and recording of reference values for heating and cooling.
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Control of the direction of condensate flow in air conditioning mode, with guaranteed gravity slope and safe discharge point.
Specific features of an installation on a wooden terrace
Noise and vibration management
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Silent blocks and load distribution on the decking limit structural transmission.
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Fan speed and noise level assessed in actual operation on the terrace in order to adjust the layout.
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Customer advice: clear 30–50 cm around the blowing face and avoid storing objects in front of the device.
Winter defrosting
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Clearance under the unit to facilitate the evacuation of defrost water.
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Recommendation for periodic snow clearance during storms.
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Check the defrost mode during commissioning to ensure an efficient cycle without frost accumulation.
Course sustainability
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Capping screwed and not glued onto the brick in order to preserve the masonry.
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UV protection of the insulation and stainless steel collars to resist freeze-thaw cycles.
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Photo documentation of the route for future HVAC maintenance interventions.
Result for the occupants
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Consistent comfort in summer and winter, without drafts or overheating.
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Controlled noise : the terrace remains fully usable.
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Discreet aesthetics and simplified maintenance thanks to direct access from the backyard.
AirGreen Best Practices for Montreal Plexes
To do
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Raise the condenser and check the condensate slope.
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Respect the clearances facing the screen and walls.
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Document pressures, temperatures and intensities in hot/cold modes.
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Schedule annual maintenance (battery cleaning, tightening, parameter check).
To avoid
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Wedging the unit against the fence: this degrades efficiency and increases noise .
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Drilling into brick without suitable waterproofing .
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Leaving the insulation exposed to the sun: loss of performance and accelerated aging.
Grants and Eligibility
Recent R-32 wall-mounted heat pumps with good low-temperature performance are often eligible for assistance programs in Quebec, subject to criteria (certified performance, replacement of an energy-consuming system, installation by qualified professionals). We support our clients in Greater Montreal in analyzing programs, whether you are in Montreal , Laval , Longueuil , North Shore or South Shore .
Recommended HVAC maintenance (annual cycle)
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Spring : gentle washing of the external battery, checking the fan and tightening the terminals.
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Summer : condensate check and condition of capping .
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Autumn : heating test, comparison of values with the commissioning sheet.
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Winter : maintaining snow clearance , visual inspection after episodes of icy conditions.
A maintenance plan prevents overconsumption, extends lifespan and maintains the manufacturer's warranty.
Project sheet (Rosemont–La Petite-Patrie)
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Type : single-zone wall-mounted heat pump .
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Brand : GREE , recent R-32 range (common residential models: Livo/Clivia/Vireo depending on configuration).
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Installation : wooden terrace against brick wall, raised support with silent blocks.
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Route : UV-covered connections, watertight masonry crossing, dedicated power supply with disconnector .
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Commissioning : nitrogen test, deep vacuum , hot/cold reference measurements recorded.
Considering a similar installation?
Our AirGreen teams design HVAC systems tailored to Montreal plex backyards and terraces. We provide a detailed quote, grant advice, and a rapid response schedule, with clean and sustainable execution.
AirGreen : heat pump expertise serving condominiums and homes in Greater Montreal .