Two outdoor units for discreet comfort in a narrow courtyard
In a typical Plateau-Mont-Royal plex, we are installing Sharp Eco Inverter wall-mounted heat pumps designed for a cramped backyard space, bordered by a wooden fence and a brick wall . The project illustrates what we do every day: integrating high-performance equipment into tight urban settings, without compromising access, security, or the peace and quiet of the occupants—or that of their neighbors.
Context and objectives of the project
The owner wants four-season comfort with an energy-efficient and quiet solution for separate living areas. The constraints are clear:
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Limited floor space on a wooden slatted deck.
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Narrow technical passage , shared with maintenance access.
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Low noise requirements due to proximity to neighbors.
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Durable finish , capable of withstanding Montreal winters.
We offer a pair of Sharp Eco Inverter wall-mounted heat pumps in a two-room configuration (two dedicated outdoor units, each connected to an indoor head). This choice guarantees fine modulation of loads and appreciable redundancy: in the event of maintenance on one circuit, the other remains fully operational.
Why Sharp Eco Inverter for a Montreal plex
Sharp 's Eco Inverter range is distinguished by:
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Variable speed compressor (Inverter) : continuous adaptation to demand, reducing on/off cycles and electricity consumption.
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Seasonal efficiencies in accordance with current standards (SEER2/HSPF2), promoting access to subsidy programs when the chosen configuration meets the efficiency criteria.
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Controlled noise levels , a decisive advantage in the interior courtyard.
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Anti-corrosion treated components on the outdoor exchanger, relevant in an urban environment exposed to salt and freeze/thaw cycles.
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Parts warranty and solid compressor , for long-term peace of mind.
Our recommendation is for stable heating in cold weather and gentle cooling in summer, with operating costs contained by inverter modulation.
Installation process: precision, safety, durability
Site preparation and surface protection
Even before opening the boxes, our team protects the surfaces: plywood to distribute the load during movement, a shop vacuum to keep the area clean, and tools organized away from traffic. This method prevents damage to the deck boards and makes it easier to restore them at the end of the project.
Positioning of outdoor units
The two Sharp Eco Inverter condensers are installed on raised aluminum supports :
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Sufficient ground clearance for snow and water drainage.
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Anti-vibration pads to limit structural transmission to the terrace and masonry.
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Alignment parallel to the fence to preserve a traffic corridor and facilitate maintenance.
This choice of aluminum supports prevents corrosion and simplifies fine leveling, essential for oil return and proper circulation of the refrigerant.
Refrigeration and electricity route
The refrigeration connections (insulated copper) and the communication/power wiring are covered in black and guided against the brick wall in order to:
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Reduce exposure to UV, shock and weather.
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Provide a sober finish that blends into the decor.
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Streamline maintenance : each circuit is identified and accessible.
An external disconnect switch is installed in the regulatory vicinity for each unit, in accordance with Quebec electrical codes . The holes in the brick are sealed and watertight , eliminating air infiltration and the risk of humidity.
Refrigeration procedure and commissioning
We apply our standard protocol:
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Bending to the proper radius to preserve the integrity of the tubes.
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Brazing under nitrogen when required, to prevent internal oxidation.
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Nitrogen leak test with controlled pressure build-up.
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Deep vacuum (pump visible in the photo) until a stable vacuum is reached, measured with a micron meter.
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Refrigerant release , superheat/subcooling checks, current checks and taking temperature measurements on-line.
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Setting up remote controls (modes, settings, fan speeds, shutter angles).
This approach guarantees a dry, clean and perfectly sealed circuit, an essential condition for the longevity of the compressor and electronic expansion valves.
Drainage management and acoustic comfort
Even though the condensate lines of the interior heads are not visible here, we favor:
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Gravity evacuation as soon as possible for reliability and silence.
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Condensate pump when slopes do not allow it, with service line for maintenance.
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Anti-siphon and capillary break to prevent odors from rising.
On the noise side, the combined use of anti-vibration pads , the silent mode of the Sharp units and the lateral positioning relative to the neighborhood rest areas contributes to discreet operation , both in air conditioning and in winter defrosting.
Result: segmented comfort, efficiency and simplified maintenance
By separating the loads on two independent circuits , we provide:
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Zoned comfort : each zone adjusts its setting without over-consuming.
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Redundancy : maintenance on one unit does not immobilize the entire housing.
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Easy maintenance : direct access, clearances respected, legible circuitry .
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Controlled aesthetics : discreet black capping , clean holes, tidy cable management.
Grants and Eligibility
Depending on the chosen configuration and the certified performance of the Sharp Eco Inverter duo, the project may be eligible for provincial/municipal financial assistance when the efficiency thresholds are met. We support our clients in:
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Assemble technical documents (product sheet, performance, certification numbers).
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Establish proof of compliance (detailed invoices, installation photos).
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Submit applications for Montreal, Laval, Longueuil, North Shore and South Shore .
AirGreen Best Practices to Remember for Narrow Yards
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Raised aluminum supports : sturdy, adjustable, snow compatible.
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Compliant clearances for air intake and service.
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Continuous cover of lines to last beyond 10 years.
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Disconnector per unit and identified wiring : faster diagnostics.
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Measured deep vacuum : top priority for longevity.
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Sealed passages and careful sealing : thermal comfort and air quality.
Typical timeline of a similar project
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Technical visit : measurements, route survey, electrical check.
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Proposal : sizing, clear quote, subsidy scenarios.
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Pre-installation : supply, intervention plan, co-ownership coordination.
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Installation (1 day for two single zones in this type of yard): supports, connections, electricity, commissioning.
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Final checks : tests, explanations to the customer, maintenance advice.
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Follow-up : assistance with financial aid applications and HVAC maintenance reminders.
Maintenance and longevity
To maintain yields:
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Quarterly cleaning of wall head filters.
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Annual check by our technicians: exchangers, fans, electrical tightening, performance measurements .
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Winter clearance : avoid snow accumulation in front of the gates.
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Observation of noise/vibrations : intervening early protects compressor and fans.
Why AirGreen for the Plateau, Montreal and surrounding areas?
Our team is familiar with the specific features of Montreal plexes : access via narrow alleys, wooden terraces, old masonry , and neighborhood rules. We deliver durable, neat, and easy-to-maintain HVAC systems in Montreal , Laval , Longueuil , and on the North and South Shores . Each project is planned , documented , and optimized for performance, safety, and aesthetics.
Conclusion
This installation of two Sharp Eco Inverter wall-mounted heat pumps in Plateau-Mont-Royal offers zoned comfort , energy efficiency and exemplary integration into a tight interior courtyard. At AirGreen, we combine engineering , rigorous implementation and administrative support to deliver projects that keep their promises over several winters.