Contemporary facade, demanding co-ownership, installation in the middle of winter: we are deploying a Gree Livo R32 wall-mounted heat pump on a residential building in Saint-Laurent . The objective is clear: to offer four-season comfort while respecting the constraints of a multi-unit building and the climatic realities of Greater Montreal .
A real winter construction site context, without compromising on quality
In Saint-Laurent, recent buildings alternate gray architectural panels with wood inserts. Condominiums require:
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discreet integration of equipment;
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reduction of solid-borne vibrations towards neighboring units;
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watertight holes and exemplary defrosting management .
Our mission: to install a high-performance R-32 heat pump in a wall-mounted configuration, on brackets at mid-height, with a short cooling path and a reliable gravity drain , while maintaining a high level of safety at height.
Why the Gree Livo R32 for an apartment building?
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R-32 refrigerant : lower charge and high seasonal efficiency compared to R-410A.
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Inverter modulation : temperature stability, controlled consumption, silence in continuous operation — a major advantage for a multi-family building .
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Wide operating range for both air conditioning and heating, suitable for Montreal winters.
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Simplified HVAC maintenance : accessible filters, quick cleaning, clear diagnostics.
Outdoor installation: anti-vibration brackets and controlled defrosting
We mount the unit on galvanized brackets anchored to the structure. This choice raises the condenser above snow accumulations and frees up ground circulation. Key points:
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Neoprene pads and spacers to decouple vibrations;
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Standardized clearances around the facade to prevent air recirculation;
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Defrost water management : courtesy gutter to a drainage point that does not hinder pedestrians or balconies;
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Clear service road for maintenance, even in winter.
The wiring is protected in an outer sheath and connected to a disconnect switch within visual range. The panel's dedicated circuit breaker complies with the selected BTU rating.
Compact refrigeration path and reliable gravity drain
The inner head is located immediately behind the wall. We retain a very short route of the insulated copper connections, with:
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Clean drilling (≈ 65 mm) sloping outwards;
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Calibrated flares , controlled tightening torque , new rings;
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Evacuation to a deep vacuum and nitrogen test before opening the valves;
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UV-stable waterproof capings , harmonized with the facade;
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Continuous gravity drain , service trap accessible inside for seasonal cleaning.
This compact layout reduces pressure losses and preserves seasonal efficiency , a point often neglected in installations crossing long distances on the facade.
Installation at height: safety and precision
Working on a facade in winter requires a strict method:
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Stabilization of ladders and grip control on snowy surfaces;
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Structural marking to anchor the brackets in the carrier (and not just the skin of the panels);
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Drilling template to avoid networks and facing fixings;
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Multi-layer sealing (closed cell foam + vapor barrier) on the interior side;
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Check anchoring torques and support level to ensure correct condensate drainage.
Interior: even diffusion and silence
The wall-mounted fan head is positioned high under the ceiling to promote air circulation . The automatic sweep directs the airflow toward the living area while avoiding direct airflow onto the occupants. The vertical vanes distribute the air into the adjacent room. Filters are readily accessible, encouraging regular HVAC maintenance .
AirGreen instrumented commissioning
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Extended vacuum resistance (micron control) and leak test using the detector.
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Delta-T measurements in air conditioning and heating, superheat/subcooling check.
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Intensity readings and verification of the acoustic profile at low speed, essential in co-ownership.
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Customer training : seasonal adjustments, filter maintenance, best savings practices.
Results: constant comfort and optimized energy bill
From the moment it is switched on, the Livo R32 modulation stabilizes the setpoint without oscillations. In air conditioning, the temperature decreases uniformly; in heating, the sensation of gentle heat is uniform up to the side rooms thanks to the orientation of the shutter . The facade retains a clean aesthetic , the capings integrating with the lines of the building.
Usage tips for occupants and managers
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Maintain a stable setpoint; the inverter consumes less in continuous operation.
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Use Auto-Fan and sweep to homogenize the living area.
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In winter, tilt the shutter slightly downwards to counteract stratification.
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Clean filters every 4–6 weeks during use.
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Schedule annual maintenance (evaporator cleaning, electrical check, drain and insulation inspection).
Grants and Eligibility
Modern R-32 wall-mounted heat pumps like the Gree Livo R32 are generally eligible for assistance programs in Quebec, subject to performance ratings and quality of installation. We support our clients in Montreal, Laval, Longueuil, the North Shore, and the South Shore for:
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validate eligibility based on BTU capacity;
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provide photos , serial numbers and certificates ;
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secure a complete file for reduced processing times.
Pitfalls to avoid in multi-layer facades
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Anchoring in the facing only : risk of tearing; we are targeting the structure .
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Air recirculation due to lack of clearances: reduced capacity; we respect the distances .
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Drain without slope or not insulated: overflows and marks; we ensure the slope and protection .
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Oversized connections and unnecessary loops: load losses; our layout remains compact .
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Vibration propagation to slabs and railings: our buffers and spacers neutralize them.
Why AirGreen for your HVAC installation in Saint-Laurent and Greater Montreal?
We combine rigorous sizing , careful execution and in-depth knowledge of local realities (snow, wind, co-ownerships, ventilated facades). Our expertise covers recent brands — Gree, Fujitsu, Sharp, Midea28 , etc. — and is accompanied by after-sales service and maintenance contracts that extend the performance of your HVAC system .
Quick Installation Guide
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Machine : Gree Livo R32 wall-mounted heat pump (BTU suitable for housing).
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Location : Saint-Laurent, Montreal .
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Mounting : anti-vibration brackets on the facade; standard clearances; defrosting management.
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Route : very short connections, waterproof caps , gravity drain with siphon.
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Objectives : stable comfort, silence , energy savings, preserved facade.