Optimizing the comfort of a Montreal plex: a clean, quiet HVAC system ready for our winters
Client background and objectives
In Rosemont–La Petite-Patrie , in a brick plex with a metal balcony typical of the area, our client wants to gain four-season comfort and reduce his energy costs. He is looking for a discreet , efficient and reliable solution, compatible with the building's architecture and municipal regulations. We recommend a Tosot Inverter wall-mounted heat pump (model from the Tosot wall-mounted range) for its precise modulation, low noise footprint and heating capacity in cold weather.
Why the Tosot Inverter wall-mounted heat pump for this project?
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Inverter modulation : the equipment continuously adapts the compressor speed, providing stable temperature maintenance and reduced power consumption.
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Compact format : ideal for plex balconies and narrow walkways; respecting clearances around the condenser.
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Quiet operation : acoustic comfort for the occupant and the neighborhood.
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Reliability and parts available : Tosot (Gree group) benefits from a network of parts widespread in Quebec, useful for HVAC maintenance .
Technical details and AirGreen implementation
Reading the site and preparing
We carry out a complete visit:
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Structure : concrete/steel balcony with railing ; brick facade; close proximity → need for clear air discharge and the shortest possible connection passage.
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Outdoor location : Select an area unobstructed by the guardrail, with frontal and lateral clearance in accordance with the manufacturer's recommendations.
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Nuisance management : vibration and noise reduction to preserve the peace and quiet of adjoining housing.
Support and vibration reduction
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Galvanized steel platform support fixed to the balcony (rather than wall brackets): this choice avoids overloading the brick and facilitates seasonal maintenance .
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Anti-vibration pads under the support points: limitation of solid transmissions towards the balcony structure and the guardrail.
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Level and drainage : precise timing of the condenser for correct drainage of condensates and optimal operation of the fans.
Refrigeration and power supply routes
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Optimized length of refrigeration connections (approximately 3 to 5 meters ) between the outdoor unit and the indoor wall head located on the street side.
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Clean drilling and discreet UV covering of the wall outlet; color harmonized with the masonry for an aesthetic finish.
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Electricity : dedicated power supply from the circuit breaker, CSA and RBQ compliance, installation of an accessible external disconnect .
Condensate management
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Gravity evacuation prioritized from the interior head to the exterior when the slope allows.
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Pump option kept in reserve if the interior route requires an ascent; here, the configuration of the apartment allows a continuous slope , avoiding the addition of a mechanical component.
Climate protection and sustainability
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Condenser orientation and height designed to limit snow accumulation and ensure free air flow.
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Stainless steel fasteners and anti-corrosion barrier on hardware exposed to de-icing salts.
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Provision of a snow shield if necessary during heavier winter episodes.
Meticulous commissioning
Our AirGreen protocol includes:
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Flares and torques according to the manufacturer's table, with adequate lubrication .
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Nitrogen test then extended leak test to validate the connections.
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Deep vacuum draw to a stable vacuum level; lift test to confirm absence of moisture/air.
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Opening of valves , setting, and reading of temperatures/pressures in operation.
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Drainage check , sound check and customer training (modes, filters, maintenance).
Result: immediate comfort and energy efficiency
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Even cooling in summer without over-circulating the air; stable heating in mid-season and at low temperatures.
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Noise contained on the balcony and inside, very appreciated in a dense urban environment.
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Controlled consumption thanks to the inverter; the electricity bill remains competitive compared to baseboards and window units.
Instructions for use and maintenance (by AirGreen)
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Internal filter : clean every 4 to 8 weeks during use.
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Clearances : Keep the area in front of the condenser clear of leaves, snow and objects.
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Defrosting : In winter, let the machine run its cycles; avoid cutting off the power.
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Programming : favor stable instructions to take advantage of inverter modulation.
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Annual Maintenance : Recommended AirGreen inspection (electrical, refrigeration and sanitation checks) to maintain durability and efficiency .
Points of attention and mistakes to avoid
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Undersizing/Oversizing : We validate BTUs based on orientation, insulation, and actual volume; an undersized unit results in short cycles and overconsumption.
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Condenser location : avoid confinement behind a guardrail too close to a wall; respect clearances to ensure efficiency .
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Condensate management : slope ensured and outlet outside passage areas to prevent droplets on lower balconies.
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Fixings : avoid risky anchors in brick; on balconies, prefer a stable platform and anti-vibration pads .
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Wiring : always a dedicated circuit with accessible disconnect, in accordance with standards.
Possible grants and eligibilities
Depending on the configuration and efficiency rating of the indoor/outdoor unit, wall-mounted inverter heat pumps may be eligible for assistance or rebate programs available in Quebec. We assist our customers in Montreal , Laval , Longueuil , North Shore and South Shore in verifying criteria and preparing files when the machine meets current requirements.
Why choose AirGreen for your HVAC installation in Montreal and the surrounding area?
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Local expertise in HVAC installation on plexes, condos and houses: knowledge of access constraints, brick masonry, balconies and exterior staircases.
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Quality of execution : rigorous commissioning, discreet finishes (harmonized capping ), complete documentation provided to the customer.
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After-sales service : HVAC maintenance , diagnostics and parts available for most brands served, including Tosot .
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Extensive coverage : rapid interventions in Montreal , Laval , Longueuil , on the North Shore and the South Shore .
Frequently Asked Questions (selection)
Can we heat efficiently in very cold weather?
Yes, the new generation inverter units maintain good performance at low temperatures. The exact runtime depends on the pairing with the chosen indoor head and the model's operating range .
What are the noise pollution problems on balconies?
Installation on anti-vibration pads and compliance with front/rear clearances significantly limit noise and resonances. Operation remains discreet for occupants and neighbors.
How long does it take to install?
In a plex context with clear access, installation generally takes one day , including emptying , testing and training .
Next step
Are you considering a wall-mounted heat pump in a plex in Rosemont–La Petite-Patrie , Plateau , Villeray , Laval or the South Shore ? Contact AirGreen : we size the machine, plan a clean connection route and ensure proper commissioning for years of comfort.
Useful keywords : heat pump , wall-mounted heat pump , Tosot , HVAC installation , HVAC maintenance , Montreal , Rosemont–La Petite-Patrie , Laval , Longueuil , North Shore , South Shore .