A neat installation on a brick facade for four-season comfort, in the heart of Montreal
At AirGreen , we have just completed the installation of a Sharp wall-mounted heat pump (R-32 refrigerant) on the facade of a modern residential building in the Le Sud-Ouest (Griffintown) sector. In a neighborhood dominated by urban density, pale brick facades, and large windows, the discreet integration of exterior equipment and performance in both heating and cooling are essential. This project illustrates our expertise: an impeccable, durable, aesthetically coherent HVAC installation ready to cope with the temperature variations of Greater Montreal.
Context and objectives: stable comfort, reduced cost, preserved aesthetics
The owner wanted:
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constant comfort in the housing unit, summer and winter;
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a reduction in consumption compared to an old window air conditioner;
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a silent and visually sober solution to respect the architecture of the building;
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an outdoor assembly that does not clutter the ground and remains easily accessible for maintenance.
We recommended a Sharp wall-mounted heat pump that runs on R-32 , a new-generation refrigerant with lower GHG emissions than R-410A. Sharp's recent ZU1/TU/THU series are renowned for their high-efficiency inverter , cold-weather heating , and careful acoustics—important criteria for Montreal condominiums.
Sharp Brand Choice: Efficiency, R-32 and Reliability in Cold Climates
Sharp's new generation wall-mounted heat pumps offer:
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Fine modulation inverter technology to adjust power on demand, limiting peaks and stabilizing the interior temperature;
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High efficiencies (competitive SEER/HSPF) allowing significant energy savings throughout the year;
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Low temperature performance suitable for Montreal winters, with heating capacity maintained in cold weather;
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Quiet operation of indoor and outdoor units, ideal for dense urban environments;
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R-32 refrigerant , more efficient, helping to reduce the environmental footprint;
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Compact design facilitating installation on facades, balconies and alleyways, while respecting regulatory clearances.
In this context, Sharp stands out as a solid option for condominiums and townhouses in the Southwest .
Installation details: exemplary integration on brick facade
Wall bracket and clearances.
The outdoor unit is mounted on galvanized wall brackets with anti-vibration pads. This solution frees up the ground, limits the risks associated with snow accumulation and facilitates spring cleaning. The side and front clearances ensure optimal air circulation, an essential condition for the compressor's performance and longevity.
Route of connections and capping.
The refrigerant connections, the communication cable and the condensate drain are grouped in a vertical beige finishing cap which rises from the rear of the condenser to the upper floor. This capping protects the insulation against UV rays, prevents rainwater infiltration and gives a clean visual line on the light brick. The layout is straight , limiting bends and therefore pressure losses. The visible length suggests an interior head located upstairs , near the riser.
Power supply and safety.
In the immediate vicinity of the unit is a compliant external disconnect box , allowing rapid isolation of the device for any service operation. The circuit is sized according to the machine's nameplate, with protected wiring and careful routing.
Condensate management.
Drainage follows gravity to the intended discharge point. In this type of installation, we favor gravity when the configuration allows it: it is silent , requires no specific maintenance, and is more reliable in the long term than adding a pump, while remaining ready to integrate a pump if architectural constraints require it.
Winter protection.
The installation height protects the unit from snow drifts and splashes. The customer received our recommendations to maintain a snow clearance of at least 30–40 cm under the condenser during periods of heavy precipitation. If necessary, a roof snow guard can be considered if concentrated runoff is located above the unit.
AirGreen methodology: precision, compliance and site cleanliness
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Location verification : study of clearances, facade constraints and co-ownership regulations.
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Clean drilling : a single controlled drilling of the correct diameter, with vapor barrier , passage of connections and careful sealing on the interior and exterior sides.
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Brazing, vacuuming, leak testing : AirGreen standard procedure to ensure a healthy refrigerant circuit .
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Electrical checks : torque tightening, polarities, continuities and voltage drop test.
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Commissioning : initial parameters, air flow calibration , verification of blown temperatures and differential in cooling mode and heating mode.
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Transfer to the client : demonstration of modes, seasonal usage tips, HVAC maintenance plan and best practices in co-ownership.
The result: a clean, efficient installation that complies with industry standards, with an exterior appearance that respects the building's architecture .
Performance and comfort: what the customer gains from day 1
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Rapid cooling of living spaces during heat spikes, including open areas typical of Griffintown condos.
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Effective additional heating in mid-season and useful contribution in winter to reduce the use of electric baseboards .
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Perceived silence both indoors and outdoors, a major asset in an urban environment.
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Controlled consumption thanks to the inverter compressor which modulates the power according to the load.
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Improved air quality through indoor unit filtration, with a reminder to clean filters every 4 to 8 weeks of heavy use.
HVAC Maintenance: The Recipe for Longevity and Maintaining Performance
We recommend:
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pre-summer maintenance (deep cleaning of the interior head, inspection of the condenser, control of pressures, intensity and drain);
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pre-winter maintenance (checking heating mode, clearances, tightening, condition of capping and insulation).
Regular maintenance preserves seasonal efficiencies (SEER/HSPF), extends service life and prevents overconsumption due to clogged filters or obstructed ventilation.
Technical points and good practices observed on this site
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Robust brackets with dowels suitable for brickwork: no vibration transmission to the housing.
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Continuous cover from the base of the condenser to the upper level: aesthetics and protection of the connections.
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Disconnect box within easy reach: intervention safety.
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Height and orientation respecting the clearances in relation to the windows: air recycling avoided and yields protected .
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Linear path limiting bends: better performance and easier service.
Grants and eligibility: the right thing to do for Montreal, Laval, North Shore and South Shore
Recent high-efficiency R-32 wall-mounted heat pumps may, depending on current criteria , be eligible for certain energy renovation assistance programs. We support our customers in:
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validate performance requirements (SEER/HSPF minimums, low temperature heating);
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prepare installation documents ;
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coordinate inspectors when required.
Our team monitors the progress of programs for Greater Montreal (Montreal, Laval, North Shore, South Shore) in order to optimize each client's investment.
Tips for maximizing savings
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Allow the heat pump to operate continuously with a stable setpoint rather than alternating large temperature variations.
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Maintain clearances around the condenser, clear snow and avoid storing objects nearby.
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Clean filters regularly and schedule annual HVAC maintenance .
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In co-ownership, check the facade rules (capping colors, locations, work schedules): AirGreen systematically complies with them.
Why AirGreen in the Southwest and throughout Greater Montreal
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Certified team specializing in HVAC installation in urban areas;
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AirGreen quality standard : site cleanliness, aligned cappings, careful seals, documented tests;
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Selection of recent devices (Sharp, Gree, Fujitsu, Midea, etc.) with R-32 / R-454B ;
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Responsive after-sales service and maintenance contracts adapted to co-ownerships and plexes;
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Complete coverage: Montreal , Laval , North Shore , South Shore .
Conclusion: a clean facade, a lower bill, a better-tempered apartment
This Sharp wall-mounted heat pump installation (R-32) in Griffintown offers the customer an immediate gain in comfort and efficiency, while respecting the aesthetics of the building. The bracket mounting, the perfectly aligned beige vertical capping and the presence of a nearby disconnect demonstrate rigorous and durable work. The unit is now ready to provide efficient cooling in the summer and efficient heating in the off-seasons and in winter, with controlled consumption.
AirGreen remains at your side for HVAC maintenance , future optimizations and any heat pump project in the Southwest , elsewhere in Montreal , in Laval , on the North Shore as well as on the South Shore .