An energy-efficient upgrade tailored for a bright condo in southwest Montreal
At AirGreen , we have just installed a Gree wall-mounted heat pump — Livo R32 series —in a condo in the LaSalle district of Montreal. The goal: to provide stable, quiet, and economical comfort for a partially open-plan space, while preserving the interior aesthetics . The result: discreet integration, precise blowing, and tangible energy savings 12 months a year.
The context: a compact space that requires precision and discretion
The living area features white walls and a side window near the chosen location. We chose to install the unit high up on a load-bearing wall to optimize:
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air stratification (capture of calories in air conditioning mode and improvement of mixing in heating mode);
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the blowing range towards the main room;
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visual discretion , the unit aligning naturally above the furniture.
This configuration avoids air recirculation near the ceiling and promotes uniform comfort without direct air currents in the living area.
Why the Gree Livo R32 range?
Gree's Livo R32 range stands out for its high seasonal efficiency , ultra-quiet operation , and discreet display integrated into the front panel—readable from a distance without obstructing the field of vision. Its advantages for a condo in LaSalle:
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R-32 refrigerant , with lower GWP than R-410A and better suited to current requirements;
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Inverter compressor finely modulating power, reducing on/off cycles and consumption;
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Comfort in extreme cold adapted to the Montreal climate, with capacity maintained down to low temperatures*;
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Quiet mode and multi-directional flaps for comfortable and targeted blowing;
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Improved filtration for healthier air in urban environments.
*Exact ranges depending on the selected BTU capacity and configuration: we always size the power based on the actual characteristics of the accommodation (exposure, insulation, volumes, glazing).
Sizing and layout: the detail that makes the difference
We size BTU power based on three pillars : winter heat loss, summer solar gain, and occupancy patterns. For this apartment, the 9,000 to 12,000 BTU range is typically adequate; thermal analysis, ceiling height, and glazing orientation guided the final choice in the Livo R32 range .
Interior layout:
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Intentionally high height to free up useful space and increase the blowing range.
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Clearances respected around the unit to optimize the sweeping of the shutters and facilitate maintenance.
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Discreet LED display on the right front: convenient for checking setpoint and operating status at a glance.
Outdoor installation (condenser):
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Wall brackets with silent blocks to limit vibration transmission to the frame and clear the device of snow in winter.
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Orientation favoring free air evacuation and safe maintenance access.
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Short, continuously insulated refrigeration passage to limit losses and maximize SEER/SCOP in actual use.
The technical route: short, clear, efficient
The location—near a wall facing outside —allows for a very short cooling path (approximately 30 to 40 cm from the back of the indoor unit to the outlet). Concrete advantages:
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Less pressure loss , therefore better performance;
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Less visual footprint : white capping matching the wall makes the path almost invisible;
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Gravity evacuation of condensates , without additional pump, therefore increased simplicity and reliability .
We systematically tighten the brazing torques and carry out a deep vacuum (≤ 500 microns) before commissioning to guarantee the absence of humidity and air, essential conditions for the durability of the compressor and stable performance .
Electrical Safety and Compliance
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Dedicated circuit sized according to nameplate and cable length;
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Appropriate circuit breaker and external service switch in accordance with standards;
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Grounding verified and communication conductors clearly marked .
This rigor prevents parasitic triggering and ensures stable communication between the indoor head and the outdoor unit, the key to a high-performance inverter .
Commissioning: Numbers, not guesses
Commissioning includes:
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Nitrogen leak test ;
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Vacuum drawing and stabilization;
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Measurements of blowing/suction temperatures, ΔT in air conditioning, absorbed intensity ;
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Verification of simulated defrosting and sensors;
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Timing of the flaps to minimize the effect of “short cycling” of air in the area near the ceiling.
The ΔT observed in cold mode and the stability of the setpoint confirm adequate sizing for the main room, with a comfort margin for the inter-seasons.
Result for the customer: consistent comfort and controlled bill
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Rapid cooling of main volumes;
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Efficient supplementary heating during cold peaks, reducing dependence on more energy-intensive systems;
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Very low noise level : ideal for teleworking and resting;
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Smoothed consumption thanks to inverter modulation.
HVAC Maintenance: The Winning Schedule
To maintain performance:
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Clean filters every 4–8 weeks (more frequently during pollen or construction periods).
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Visual check of the capping, clearance of the outdoor unit and condensate drainage at each change of season.
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Annual maintenance by AirGreen: deep cleaning of the evaporator, checking of connections, testing of probes, inspection of supports and defrosting.
Regular maintenance protects the compressor and maintains the advertised performance .
Grants and Eligibility
The Gree Livo range of high-efficiency R-32 wall-mounted heat pumps are generally eligible for Quebec programs (depending on the configuration chosen and the criteria in force), particularly in Greater Montreal: Montreal, Laval, Longueuil, North Shore and South Shore . We support our customers in:
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eligibility verification (performance range, approvals);
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preparation of documents (detailed invoices, photos, serial numbers);
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submission to the relevant programs.
Pitfalls to avoid (AirGreen feedback)
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Undersize to “save money”: the compressor will run harder, noise and wear increase.
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Too long refrigeration journey : pressure losses, reduced efficiency, increased bill.
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Non-gravity condensate drainage when possible: pump unnecessarily stressed and maintenance more cumbersome.
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Insufficient clearances around the condenser: less efficient defrosting, penalized winter performance.
Why AirGreen for your HVAC installation in LaSalle and throughout Greater Montreal?
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Certified in-house team , specialized in wall-mounted heat pumps from Gree, Fujitsu, Midea, Sharp, etc.
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Proven methodology : audit, sizing, implementation, instrumented commissioning, photo file and technical report .
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Responsive after-sales service and scheduled HVAC maintenance to ensure your investment lasts.
For a condo, a multiplex or a single-family home, we offer tailor-made solutions, always aligned with Montreal's climate reality and the strictest industry standards .
Technical sheet - in brief
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Type : wall-mounted heat pump (mini-split)
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Brand : Gree
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Range : Livo R32 (BTU selection adapted to the space)
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Interior layout : load-bearing wall, high installation, optimized clearances
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Refrigeration path : very short , discreet white capping
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Condensates : gravity drainage
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Condenser : on brackets with silent blocks, clear of the ground for snow
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Customer objective : quiet comfort, controlled consumption, preserved aesthetics
Conclusion
This Gree installation (Livo R32 range) in LaSalle illustrates our way of working: detailed analysis , clean execution and measured performance . The condo gains in comfort in summer and winter, without compromising on the elegance of the space. For projects in Montreal, Laval, Longueuil, North Shore and South Shore , our AirGreen team delivers sustainable , scalable installations ready for the coming years of energy-efficient heating and air conditioning .