Four-season comfort for a condo in Chomedey: careful, quiet and aesthetic installation
At AirGreen , we transform a balcony into a true ally of comfort. For this co-owner in Chomedey (Laval) , our team installed a GREE R-32 wall-mounted heat pump designed for Greater Montreal : efficient in cold weather, discreet in noise and perfectly integrated into the brick facade.
The customer context and objectives
The client wanted:
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precise cooling in summer for an open living room;
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efficient low-temperature heating to reduce the electricity bill in mid-season;
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a clean integration respecting the requirements of the co-ownership union;
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a very low noise level on the balcony and for the neighbors.
Our recommendation: a new generation GREE wall-mounted R-32 heat pump , known for its high seasonal efficiency (SEER2/HSPF2) and its resistance to Quebec cold.
What we have achieved, step by step
Step 1 — Optimized exterior layout
The external compressor is installed on a concrete balcony slab , placed on a raised support fitted with anti-vibration pads .
Objectives achieved:
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limit the transmission of vibrations to the structure;
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clear the unit of any accumulations of water and snow;
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maintain adequate clearances for ventilation and maintenance.
We fixed the support with mechanical anchors suitable for concrete, then checked the plumb line and tightening torque. The refrigerant and electrical connections are passed through the brick wall via the mortar joint , to avoid any risk of a tile bursting.
Step 2 — Careful aesthetics of the connections
The copper connections, the communication cable and the condensate drain are covered in a vertical brown capping perfectly matching the red brick . The route follows a vertical rise then a low return to reach the unit, which:
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protects insulation against UV rays and shocks;
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improves the aesthetics of the co-ownership side;
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simplifies any subsequent intervention.
The entire drilling was sealed (closed cell foam + sealant) to ensure airtightness and avoid thermal bridges.
Step 3 — Condensate Management and Slope Details
The drain was designed to be gravity-fed with a constant slope from the indoor unit. When the architecture requires a rise, we offer a silent condensate pump ; here, the configuration allows for gravity-fed drainage — an advantage for reliability and acoustic discretion .
Step 4 — Proper electrical connection
We installed an outdoor disconnect box in the regulatory vicinity of the unit, then connected a dedicated circuit to the panel (size and breaker in accordance with the model's nominal current). The power cable is protected in conduit and has a drip tray to prevent water infiltration.
Step 5 — Vacuuming, Charging and Commissioning
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Brazing under nitrogen and pressure test ;
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Deep vacuum draw down to the recommended micron thresholds;
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Loss verification ;
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Opening of the factory charge to R-32 and adjustment according to the actual length of the lines;
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Reading of parameters (pressure, intensity, air/line temperatures) and test in cold then in heat .
Why this GREE R-32 for a condo in Laval?
Performance and comfort
The new GREE R-32 offers very competitive seasonal efficiencies , a low temperature operating range adapted to our winters and inverter regulation which stabilizes the temperature smoothly. The result: constant comfort and controlled consumption .
Silence and respect for the neighborhood
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Low noise fan and compressor ;
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Anti-vibration mounts selected according to the mass and natural frequency of the unit;
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Positioning avoiding any reverberation against the facade or balustrade.
R-32 Refrigerant: Efficiency and Future
R-32 provides better volumetric efficiency and reduced loads compared to the older R-410A, helping to reduce the overall energy footprint of the system.
AirGreen Site Challenges and Solutions
1) Narrow balcony and circulation
The patio door had to remain fully functional. We have:
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held sufficient distance in front of the sliding door;
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retained air intake/discharge clearances ;
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oriented the unit to minimize blowing into the relaxation area.
2) Visual homogeneity imposed by the co-ownership
The brown capping and straight installation align with the existing architectural elements. The fixings are discreet and the facade crosspiece was made neatly with the mortar joint .
3) Structural noise
The risk of transmission has been reduced by:
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high density anti-vibration pads ;
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support spacers limiting rigid bridges;
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verification of resonance frequencies at start-up and in operation.
Result: measurable comfort and reduced bill
Upon start-up, the customer notices:
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a quick refresh of the main room;
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flexible heating during the inter-seasons, limiting the use of electric baseboards;
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discreet operation on the balcony.
Over the year, the expected result is a significant reduction in kWh related to supplementary heating and improved air quality thanks to the integrated filtration of the indoor unit.
AirGreen Tips for Condominiums in Greater Montreal
Best HVAC Installation Practices
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Provide raised support for snow and drainage;
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Protect the connections with UV capping ;
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Drill at the joints rather than into the brick;
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Observe the manufacturer's clearances ;
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Install an accessible disconnect box .
HVAC Maintenance to Last
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Clean the filters inside every 4–8 weeks in season;
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Clear of leaves/snow around the condenser;
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Annual inspection : heat exchange, pressures, electrical tightening, drain.
Grants and Eligibility
High-efficiency , cold-weather wall-mounted heat pumps may be eligible for programs in effect in Quebec, depending on the criteria (SEER2/HSPF2, minimum operating temperature, certification, installation by a licensed contractor). Our team will validate the available assistance for you at the time of the project and assist you in the process .
Why entrust your project to AirGreen?
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Local expertise in Montreal, Laval, Longueuil, North Shore, South Shore ;
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Mastery of co-ownership constraints and electrical standards ;
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Turnkey service : selection, installation, commissioning, HVAC maintenance ;
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Clear guarantee and responsive after-sales service .
Are you planning a wall-mounted heat pump for a condo in Chomedey or elsewhere in Greater Montreal? We size the power (BTUs), select the most appropriate GREE, Midea, Fujitsu, or Sharp series, and ensure a durable installation that protects your investment.
Technical summary of the construction site
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Type : wall-mounted heat pump (mini-split) R-32
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Brand : GREE (recent series)
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Context : condo in Chomedey (Laval)
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Exterior installation : raised support with anti-vibration pads on balcony slab
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Route : vertical brown capping , mortar joint drilling, gravity drain
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Electrical : external disconnection , dedicated circuit
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Objectives : 4-season comfort, silence , compliance with co-ownership rules
AirGreen — your HVAC installation and maintenance partner throughout Greater Montreal .