An HVAC upgrade designed for Montreal winters
In a brick duplex in the Saint-Léonard sector of Montreal , our team installed a Fujitsu wall-mounted heat pump – Orion XLTH range . The objective is clear: to provide stable comfort all year round, reduce energy consumption and ensure exemplary reliability during extreme cold. This mini-split format integrates perfectly with the neighborhood's homes, where outdoor space is limited and the aesthetics of the brick facades count as much as performance.
Project context and client needs
The owner was looking for a quiet HVAC solution that could efficiently heat in sub-zero temperatures and cool in the summer without drafts. The Fujitsu Orion XLTH meets these criteria thanks to its inverter technology, excellent capacity retention in cold weather, and reputation for reliability. We also prioritized a layout that facilitates seasonal maintenance and limits risks related to snow and ice.
Design and preparation of the installation
Choosing an outdoor location
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Mounting on sturdy wall brackets , bolted into the brick with suitable anchors.
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Clear height of approximately 1.8–2.2 m above finished ground to stay clear of snow banks, clear airflow and prevent dust aspiration.
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Standardized clearances around the condenser to optimize heat exchange and avoid air recirculation.
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Disconnect box installed nearby in accordance with the Code and the RBQ, for safe electrical disconnection during maintenance.
Route of lines and aesthetic integration
To connect the indoor unit to the outdoor unit, we chose a vertical metal capping in a reddish-brown color that matches the brick. This conduit protects the insulated refrigeration lines , the communication cable and the power wiring , while ensuring a clean and durable finish. Bends are limited to what is strictly necessary, bend radii are respected so as not to restrict the flow of refrigerant, and the holes are properly sealed to prevent any infiltration of air or water.
Condensate management
On the interior side, condensate drainage is provided by gravity when the configuration allows. The outlet point is positioned to remain frost-free and away from passageways, in order to avoid icicles and free water on the sidewalk. When required by the architecture, a discreet lifting pump can be considered; here, gravity drainage remains sufficient, which reduces maintenance and the risk of breakdown.
Installation of equipment
Outdoor unit: stability and silence
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Anti-vibration pads under the chassis to reduce the transmission of vibrations to the masonry.
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Cross-fixing of the brackets to stiffen the assembly and resist dynamic loads (wind, defrosting).
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Electrical routing in a protected sheath to the isolating box, then to the electrical panel on a dedicated circuit, depending on the heat pump power and the manufacturer's specifications.
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Frost management : rear and bottom clearance promotes the evacuation of defrost water and limits ice accumulation.
Indoor unit: homogeneous diffusion
Inside, the Fujitsu wall-mounted unit is positioned at the top of the wall , promoting controlled stratification in heating and uniform distribution in air conditioning. The orientation of the fins directs the airflow into the living area without blowing directly onto the occupants. We validate the blowing temperature , fan speed and automatic modes upon commissioning to ensure immediate comfort.
Quality of execution and controls
Stretching, brazing and pressurizing
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Continuous nitrogen brazing to prevent internal oxidation of copper tubes.
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Nitrogen leak test with stabilized pressure reading (according to manufacturer's limits).
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Deep vacuum drawing up to the required thresholds, controlled by vacuum gauge, then vacuum stability before opening the service valves.
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Checking currents and voltage drops at commissioning; checking sensors and installer codes.
Fine adjustments and usage tips
We configure silent modes , time schedules and anti-draft functions. A personalized user guide is left for the customer: recommendations for set temperature , HVAC maintenance (periodic cleaning of filters, visual verification of exterior clearances) and warning signs to watch for.
Results: comfort, efficiency and discretion
The Fujitsu Orion XLTH delivers stable heating during Montreal's typical cold weather and gentle cooling during hot and humid periods. Customer highlights:
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Quiet operation both inside and outside.
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Responsiveness and capacity maintenance in cold conditions.
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Neat finish thanks to the brick-tone vertical capping and discreet line management.
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Easy access for annual maintenance and snow removal from the area under the unit.
Regulatory aspects and subsidies
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Installation carried out in accordance with electrical standards and good HVAC practices in force in Quebec.
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The Orion XLTH range is generally eligible for assistance programs when energy efficiency criteria are met (certified models). We support our customers to document requests and maximize the incentives available in Greater Montreal ( Montreal, Laval, Longueuil, North Shore, South Shore ).
Preventive maintenance: protecting performance
To maintain performance and extend equipment life:
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Clean the wall head filters every 4 to 8 weeks during periods of heavy use.
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Clear the outdoor unit : no obstructions within a clear radius; watch for snow and ice in winter.
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Annual HVAC maintenance program with AirGreen: inspection of connections, cleaning of exchangers, verification of intensities, updating of settings.
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Good usage practices : limit sudden changes in setpoint, avoid frequent on/off cycles, use the auto-defrost modes provided by the manufacturer.
Why AirGreen for your heat pump in Saint-Léonard and Greater Montreal?
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Wall and multi-zone expertise on major brands: Fujitsu , Gree , Sharp , Hitachi , Midea , Lennox .
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Careful architectural integration (facade-tone cappings, suitable brackets, clean openings).
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Complete support : capacity selection (BTU), installation advice, grant procedures, calibrated commissioning and HVAC maintenance .
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Local service covering Montreal, Laval, Longueuil, North Shore and South Shore with teams trained in local climate realities.
Technical highlights of this installation
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Equipment type : single-zone wall-mounted heat pump .
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Brand : Fujitsu , Orion XLTH range .
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Mounting : galvanized steel wall brackets , cross-stiffened; anti-vibration mounts ; dedicated isolating box .
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Route : vertical brick-colored metal capping ; watertight drilling; insulated and curved refrigeration lines with a large radius.
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Maintenance : direct access to the condenser for spring washing; optimized clearances for winter defrosting.
Conclusion
This project in Saint-Léonard illustrates how a well-sized and professionally installed Fujitsu Orion XLTH wall-mounted heat pump transforms the comfort of a Montreal duplex. By combining performance , visual simplicity and compliance with standards , AirGreen delivers an installation ready to face Quebec winters and provide pleasant air conditioning in the summer. For a similar project in Montreal, Laval, Longueuil, on the North Shore or the South Shore , our team guides you from evaluation to commissioning, then ensures HVAC maintenance follow-up to maintain performance over time.