A clean, quiet HVAC system designed for suburban homes
Residential context and objectives
In Vimont (Laval) , a family wants to modernize their four-season comfort without cluttering up the yard. The need is clear: efficiently cool the upper floor in the summer , heat at a lower cost in the spring and fall, and maintain a discreet and durable installation. We chose a Zephyr wall-mounted heat pump , a compact solution that offers an excellent performance/sound ratio while protecting the floor space.
Why a Zephyr wall-mounted heat pump here?
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Inverter modulation : the machine precisely adjusts its power to stabilize the temperature and reduce consumption.
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Compact format : ideal for the brick/cut stone facades typical of Laval.
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Simplified HVAC maintenance : direct access to components, washable filter on the interior head side.
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Reliability in Quebec climate : protected compressor and electronic cards, optimized defrosting.
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Flexible installation : short refrigeration path possible, limitation of losses and better responsiveness.
What we are actually doing on this project
Outdoor installation: stability, access and silence
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Support on galvanized wall brackets , mechanically fixed in the masonry.
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Raising the ground by approximately 45–50 cm : protection against tall grass, water splashes and snow accumulations .
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Anti-vibration pads under the unit to reduce sound transmission to the facade.
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Clearances respected around the blower grille for optimal air sweeping.
Power supply and safety
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Dedicated circuit from the panel, rating in accordance with the device nameplate .
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Outdoor disconnect box installed within easy reach of the technician; waterproof cover and clear labeling.
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Rigid conduit routing to the unit for mechanical protection and a professional finish.
Refrigeration connections: performance and cleanliness
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Vertical covered route (grey capping matching the facade) then wall crossing towards the interior head.
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Optimized total length ~3 to 4 m : less pressure loss, better efficiency.
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High density continuous insulation of the lines to prevent condensation and thermal bridges.
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Nitrogen brazing , leak testing and deep vacuum <500 microns before commissioning — key steps for durability .
Water and frost management
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Crossing slope provided towards the outside for the natural evacuation of condensates from the interior head.
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Sufficient low clearance for winter defrosting : water flows freely without splashing back onto the masonry.
Construction site storytelling: efficiency in a living environment
The land has an irregular strip of grass with a concrete border. To avoid any slab subsidence and preserve the mowing space, we choose a wall mounting . After marking, we carry out:
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Laser tracing and anchors in the stone to obtain perfect horizontality ;
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Installation of brackets and pads , then installation of the unit with vibration control;
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Discreet vertical cover to protect cables and connections;
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Functional tests under load (heating/air conditioning), verification of intensities and configuration of the remote control.
Result for the occupants
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Uniform cooling of living spaces during heat waves in Laval.
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Economical supplementary heating during the off-season, reducing the use of electric baseboards.
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Noise controlled both outside and inside thanks to the inverter and the vibration decoupling system .
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Simple aesthetics : the unit frees up floor space, the disconnect box is close and accessible, the capping blends into the facade.
Major technical points of the installation
Sizing and configuration
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Equipment type : Zephyr wall-mounted heat pump , inverter technology.
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Retained capacity (typical residential range): ≈ 12,000 to 18,000 BTU depending on room-by-room loads, calculated during the visit.
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Single-zone : one indoor head for the main level, with soft and quiet distribution.
AirGreen Execution Quality
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Controlled tightening torques on flare fittings; systematic plugging of tubes before brazing.
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Nitrogen pressurization and electronic leak detection .
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Recording of start-up parameters (pressures, temperatures, intensity) in the customer file for maintenance monitoring .
Recommended HVAC maintenance
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Cleaning filters and indoor battery at least once per peak season.
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Annual inspection : electrical connections, currents, condition of the support and clearances, control of evaporation/condensation temperatures.
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Winter Clearance : Keep 20–30 cm clear under the unit for frost and to keep packed snow away.
Grants, eligibility and best practices
High-efficiency wall-mounted heat pumps may be eligible for provincial programs and Hydro-Québec initiatives, depending on the model and certified efficiency . We support:
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verification of the applicable criteria;
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preparation of the file;
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the provision of the required technical documents.
Good implementation practices for a Laval house:
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Raise the condenser to protect it from snow and make lawn maintenance easier.
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Avoid obstacles in front of the grille (bushes, bins, bicycles) to preserve air flow.
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Limit the length of refrigeration connections and take care with insulation to maximize efficiency.
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Provide clear access to the disconnect box and keep the area clear in winter.
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Schedule annual HVAC maintenance to maintain energy savings.
Why entrust your HVAC installation to AirGreen?
At AirGreen , each project is treated as a complete system : sizing , installation , commissioning , support for subsidies and maintenance . Our expertise in residential buildings in Laval , Montreal and Longueuil , as well as on the North and South Shores , guarantees reliable, aesthetic and sustainable integration. Our signature: short refrigeration path , secure electricity , careful finishing and complete documentation for the life of the system.
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