Four-season comfort, careful finishing, and energy optimization designed for Montreal's reality: here is the story of an HVAC installation by AirGreen in a Ville-Marie condo.
A clear project: efficiently air conditioning and heating an urban condo
The accommodation is bright, with large French windows and vertical blinds typical of downtown condominium units. The client's request: a compact, quiet solution capable of providing supplemental heating in winter and comfortable cooling in summer, while maintaining minimal visual impact inside and outside. We offer a GREE Livo R32 wall-mounted heat pump , a proven choice for this type of housing: efficient, reliable, compatible with energy efficiency programs when the configuration meets the criteria, and above all very discreet .
Why the Livo R32 range?
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R-32 refrigerant : better volumetric efficiency and reduced charge compared to R-410A, with performance adapted to the climate of Greater Montreal .
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Typical capacity range (9,000 to 24,000 BTU) : allows precise sizing according to the surface area and envelope of the building.
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Quiet : modulated fan speed and contained sound pressure, ideal for open living spaces.
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Four-season operation : low-temperature heating and automatic dehumidification for humid periods in spring and autumn.
Sizing benchmarks: the AirGreen method
We always size a heat pump based on:
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of the surface and orientation of the parts,
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insulation (windows, thermal bridges),
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internal loads (devices, occupants),
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of the actual usage profile .
Here, the indoor unit serves an open area adjacent to a patio door. The goal is to ensure uniform cooling in the summer and additional heating in the off-season. The Livo R32 range meets this need precisely, without oversizing (a frequent source of discomfort and short cycles).
Installation details: course cleanliness and long-lasting performance
Positioning and interior finishes
We installed the wall head at the top of the wall , away from the ceiling to ensure good air recirculation and simplify filter maintenance. To the right of the unit, the white technical cover descends in a straight line to the bottom of the partition: a clean and discreet vertical path that preserves the aesthetics of the room. Condensate drainage is gravity-driven , which eliminates the need for a pump and reduces noise and potential maintenance points.
Key points of the finish:
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Vertical covered course (approximately 2 m to 2.5 m ), white tint matching the wall.
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Through hole with slight slope for condensate drainage.
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Tight joints and tight capping angles for a linear finish.
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Fixings anchored in the masonry, respecting the manufacturer's clearances .
Refrigeration treatment and commissioning
We follow a rigorous protocol:
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Continuous bending and insulation on the connections to avoid dew points.
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Nitrogen pressurization and leak test .
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Deep vacuum until stabilization (microns monitored).
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Opening of valves , subcooling/superheat control and checking of currents .
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Functional test in cold then in heating , as well as the temperature probe and the defrost logic.
Outdoor unit: controlled vibrations and clearances respected
Although not visible here, the outdoor unit is installed on anti-vibration supports (wall brackets or slab depending on the facade), with compliant rear and side clearances . In Montreal, we systematically provide:
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Snow and runoff management .
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Sufficient height to avoid snowdrifts .
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Dedicated wiring compliant with Code, suitable circuit breaker and clear identification on the panel.
Result: immediate comfort, contained noise, preserved aesthetics
From the moment it is switched on, the fresh air is laminar , without any aggressive drafts. In heating mode, compressor modulation ensures a stable temperature , even during the rapid variations typical of city centers. Noise levels are low, both inside and outside, a major advantage in a condominium.
Good practices for use and maintenance
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Filters : Rinse with warm water every 4 to 8 weeks depending on use.
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Target temperatures : favor realistic instructions and modulation rather than sudden changes.
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Dehumidification mode in summer to improve perceived comfort without excessively lowering the temperature.
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Clearances : Do not obstruct the unit (furniture, curtains).
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Annual inspection : tightening, cleaning exchangers, checking refrigeration and electrical parameters — regular HVAC maintenance maximizes performance and longevity.
Common mistakes… that we avoid
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Winding paths or excessive bends: pressure losses, noise and reduced efficiency.
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Condensate pump unnecessary: source of noise/maintenance avoidable when gravity is possible.
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Insufficient clearances around units: recirculation of hot/cold air and premature frost.
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Oversizing : short cycles, discomfort and increased consumption.
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Lack of external winter protection : snow accumulation, icing and anticipated breakdown.
Grants and Compliance
Depending on the chosen capacity and the energy classification of the configuration, this type of wall-mounted heat pump may be eligible for efficiency programs in Quebec. We guide our clients in verifying the criteria (models, seasonal performance, documentation), and we provide the necessary certifications . In terms of compliance, all our installations comply with the RBQ requirements, the CCQ rules where applicable, and the best practices recommended by the manufacturers.
What the customer gains
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Four-season comfort without heavy lifting.
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Energy savings through modulation and R-32 .
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Silence and visual discretion with clean vertical capping and gravity drainage.
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A long-lasting installation, ready for simple maintenance and long-lasting performance.
Our AirGreen commitment
At AirGreen, we operate throughout Greater Montreal — Montreal , Laval , Longueuil , North Shore , and South Shore —with a consistent requirement: clean, measured, and compliant installations that enhance your space and comfort. For a condo in Ville-Marie , as well as a house in Laval or Brossard , our teams offer the fairest solution : no more, no less.
Tips for going further
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Consider an annual maintenance contract to secure performance and warranty.
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Add Wi-Fi control (if not included) to optimize schedules based on your presence.
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If several rooms need to be served, we can study a Multi-Zone R32 (2 to 5 heads) while maintaining the same logic of cleanliness of the route and control of vibrations.
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