4-season comfort for a downtown condo: silence, homogeneous diffusion and discreet integration, with careful installation in accordance with best HVAC practices.
A project designed for urban life
In the heart of Ville-Marie , where every square meter counts, we favor compact wall-mounted heat pumps that are efficient in cold weather and virtually imperceptible on a daily basis. On this site, the TOSOT indoor unit is integrated into a clean white wall, under a recessed ceiling light. The result: a minimal visual presence, a wall-mounted air conditioner/heat pump that heats and cools with precision, and stable comfort even during the temperature fluctuations typical of downtown Montreal .
Why choose TOSOT for this condo?
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Brand : TOSOT (subsidiary of the GREE group), renowned for the reliability of its murals in residential contexts.
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Type : wall-mounted heat pump (mini-split) – ideal for providing air conditioning in summer and additional heating in winter.
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Client objective : improve comfort in the main living area without noise and without sacrificing aesthetics.
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City-center requirements : quiet operation, energy savings, maintenance of uniform humidity and temperature.
What we are looking for in a TOSOT mural in a Ville-Marie apartment:
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Fine modulation of the compressor to limit cycles and stabilize the temperature.
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Low interior noise level , essential in open spaces.
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High seasonal efficiency to contain energy costs.
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Grant compatibility : most recent heat pumps , when their performance indices meet official criteria, are eligible for Quebec programs; we validate these parameters in the file according to the BTU capacity retained.
Interior integration: aesthetics and comfort first
The wall head is installed at the top , at a regular distance from the ceiling in order to optimize air intake and avoid hot recirculation in heating mode. Several key points of our method:
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Millimeter alignment : the unit follows the axis of the wall for a clean look in a room with a minimalist design.
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Airflow management : shutter and register direct air to cover the living area while avoiding direct blowing onto the relaxation area.
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Discreet display : the front display allows for quick checking of the setpoint, visible here at 28°C during heating tests.
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Quiet : We set the sound level to low/auto for quiet evenings; the internal fan is set for gentle, even diffusion.
Condensates and wall crossing
In this type of condo installation:
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We favor internal gravity drainage when the configuration allows, which eliminates pump noise and simplifies maintenance.
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The crossing is sealed and insulated to prevent air leaks and thermal bridges.
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The refrigeration connections pass behind the head and exit to the outside through a separate hole; on the front side, they are protected by UV-resistant capping .
Exterior: discretion and durability (AirGreen standard procedure)
Although the outdoor unit is not shown in this photo, our standard for downtown buildings remains:
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Fixing on brackets or on slab according to co-ownership approval and available clearances.
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Systematic anti-vibration devices to prevent the transmission of vibrations to the structure.
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Accessible external disconnect box and protected wiring.
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Vertical/horizontal capping matching the facade, curvature radii respected and continuous insulation.
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Sufficient height for free flow in winter defrost mode.
Refrigeration quality chain
For the longevity of any HVAC installation , we apply the following steps:
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Nitrogen brazing of the lines to avoid internal oxidation.
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Nitrogen test (high pressure) to detect the slightest micro-leak.
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Deep vacuum (≤ 500 microns) with stabilization and hold control.
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Opening of the valves and commissioning with reading of the parameters under real load.
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Electrical checks : tightening torque, polarity, dedicated circuit breaker.
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Finishing touches : fillings, adjusted capping, cleaning and instructions for use to the customer.
BTU Sizing and Capacity: Our Approach
Sizing depends on:
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of the surface to be treated,
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exposure (south-facing windows in residential towers, for example),
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the quality of insulation and the level of sealing,
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habits (desired instructions, occupation).
We validate the BTU capacity to cover the summer peak load while ensuring efficient supplemental heating at low temperatures. The goal is to avoid an oversized unit (noise, short cycles) or an undersized unit (lack of comfort during heat waves/winter).
Results obtained in this Ville-Marie condo
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4-season comfort : stable temperature, better controlled humidity.
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Aesthetics : a flush white wall head that blends into the decor.
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Quiet : reduced noise level, ideal for teleworking and evenings.
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Savings : modulation and high efficiency limit consumption compared to purely resistive electric heating.
HVAC Maintenance: The Key to Long-Lasting Performance
To maintain the performance of a wall-mounted heat pump in an urban environment:
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Quarterly filter cleaning : maintains air flow and quiet operation.
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Washing the internal/external exchanger (annual) to remove fine dust and deposits.
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Condensate drainage check : check the slope and joints.
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Electrical and refrigeration inspection : tightening, visual inspection of insulation, operating test in cold/heat modes.
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AirGreen Maintenance Plan : Annual reminder and condition report to preserve the manufacturer's warranty and equipment value.
Best practices in downtown Montreal condominiums
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Union/co-ownership coordination : validation of exterior locations, drilling and authorized noise levels.
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Respect clearances : around the condenser for optimal ventilation (efficiency and longevity).
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Noise management : anti-vibration and speeds adapted at night.
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Finishes : clean capping and sealing of penetrations for a neat facade, essential in Ville-Marie , Laval , Longueuil , North Shore and South Shore .
Instructions for use for precise comfort
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Leave the wall in auto/modulation mode rather than making multiple stops; stability improves efficiency.
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Target 22–23°C when occupied and lower slightly at night.
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Close windows during hot weather to avoid excessive internal heat gain.
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In winter, keep the area around the outdoor unit (balcony/driveway) clear for effective defrosting.
AirGreen: your HVAC partner in Montreal and the surrounding area
Our team supports owners and managers in Greater Montreal – Montreal , Laval , Longueuil , North Shore , South Shore – from the choice of heat pump to maintenance. We take care of pre-qualification for subsidies , prepare the file with the necessary evidence (model and serial numbers, installation photos, technical data sheets), and ensure compliant installation for lasting peace of mind.