Why this flat roof configuration is a game changer
Montreal plexes often feature gravel roofs with parapets. By positioning the condenser on a raised support, we free up the backyard, reduce noise transmission to neighbors, and ensure optimal airflow. The result: stable performance, even during heat waves or extreme cold.
Equipment profile — Gree Livo R32, the versatile series
The Livo R32 series stands out for its efficient operation in cold conditions, the use of R-32 refrigerant with a lower GWP, and electronics that maintain fine modulation of the compressor. In a dense urban setting like Rosemont–La Petite-Patrie, it offers:
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A reliable heating mode in mid-season and cold weather;
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A quiet refresher, ideal for bedrooms and open areas;
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Moderate consumption thanks to the inverter and optimized thermal exchanges.
The key points of our HVAC installation on this site
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Raised galvanized aluminum support , placed on treated wooden soles to distribute the load and prevent any puncture of the covering. A protective membrane separates the soles from the roof to maintain waterproofing.
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Clear height under the unit to promote air flow, limit snow accumulation and facilitate maintenance.
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Refrigerant lines insulated and UV-sheathed over the entire exterior route, with freeze-thaw resistant clamps and anchors.
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Careful routing to the technical column, which reduces the effective length of the lines and pressure losses.
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Condensate management on the interior side provided by gravity where possible; compact pump installed as an option where architecture requires it.
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Electrical connection on dedicated circuit, compliant protection and service circuit breaker nearby according to the Code in force.
Sizing and comfort: the AirGreen approach
Before installing a heat pump , we carry out a mini-load assessment: orientation, glazed surface, envelope, infiltration and occupancy habits. The goal is not to "oversize" for the heatwave, but to achieve the right power for four-season comfort. The result is measured by:
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Even temperature, fewer on/off cycles;
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A discreet sound level, both indoors and outdoors;
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Controlled energy bills throughout the year.
Installation details: what the roof requires more of
Installing a condenser on a flat roof is not a simple "move." We plan:
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Safe access routes and working at height with lifelines when required;
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Protection of the coating (membranes, slabs or soles) to avoid any perforation;
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Clearances around the condenser (facades and parapets) to ensure air intake/exhaust;
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Snow management : sufficient elevation and orientation away from prevailing snowdrifts;
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Vibration control : anti-vibration pads and tightening to the prescribed torque.
Result obtained at our client in Rosemont
The condenser, perfectly plumb and level , rests on a robust frame that distributes the load. The insulated lines are protected against UV rays and temperature variations. Access for maintenance is clear: filters, refrigeration connections and electrical box remain accessible without dismantling the structure. Inside, the wall-mounted head is positioned to sweep the main living area, with free air intake and lateral clearances respected.
Preventive maintenance: the key to performance
An HVAC installation on a flat roof requires simple but regular monitoring:
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Cleaning of the fins and visual inspection of the insulating sheaths in spring;
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Checking electrical tightening and testing condensates;
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Replacement/maintenance of interior side filters at recommended intervals;
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Control of snow clearance in winter during windy episodes.
These actions ensure stable seasonal performance, reduce component wear and extend machine life.
Grants and environmental compliance
Recent high-efficiency R-32 wall-mounted heat pumps are generally eligible for the main assistance programs in effect in Quebec. We prepare the necessary documents, installation certificates and photos to expedite your application. Our team also guides customers in Laval , Longueuil , the North Shore and the South Shore to align the model selection with the criteria of the targeted program.
What we consistently deliver
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A clean and documented site (installation photos, serial numbers, key parameters);
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Commissioning with verification of pressures and temperatures;
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User training: modes, energy saving instructions, filter maintenance;
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Responsive after-sales service for the following season (maintenance, calibration, optimization).
Why choose AirGreen for your project in Montreal and the surrounding area?
At AirGreen, we combine technical expertise , attention to detail, and respect for the building envelope. Our teams understand the constraints of plexes, condos, and houses in Greater Montreal : access, gravel roofs, parapets, narrow stairwells, and co-ownership schedules. This on-site expertise translates into fast, durable, and discreet construction sites—and tangible comfort from the very first hours of use.
Practical advice for your future project
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Think route : a short route for lines improves reliability and efficiency.
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Plan for maintenance : leave a service corridor around the unit; you will save time.
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Anticipate winter : the elevation and orientation of the condenser limit frost and snow.
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Request documentation : manuals, warranties, technical data sheets; we will give you everything at the start.
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Plan early : In spring/fall, deadlines are shorter and slots more flexible.
In short
This Gree Livo R32 wall-mounted heat pump installation on a flat roof in Rosemont–La Petite-Patrie illustrates our approach: well-sized mechanics, methodical installation that respects the roof, and clear support for maintenance and subsidies. For any project in Montreal , Laval , Longueuil , North Shore and South Shore , our team travels, advises and installs with the same high standards.
Need an estimate for your building or condo? Contact us: we offer turnkey solutions, from load study to commissioning, with quality workmanship that can be seen—and heard—every day.