In the Plateau-Mont-Royal , where brick buildings, narrow backyards, and exterior staircases are part of the landscape, every HVAC installation requires careful planning. At AirGreen , we recently completed the installation of a Sharp wall-mounted heat pump , a system designed to provide year-round comfort while seamlessly integrating with the typical architecture of Montreal's multi-unit dwellings.
A compact and efficient solution: Sharp wall-mounted heat pump
The installed system is a Sharp ZU1 wall-mounted heat pump (residential range), a unit appreciated for its balance of performance, energy efficiency, and quiet operation. This is exactly the type of configuration that suits Plateau homes: one or more rooms to heat/cool, limited outdoor space, and the need to minimize noise.
Why is the Sharp ZU1 a good choice in an urban environment?
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Inverter technology (Eco Inverter) : the machine modulates its power instead of operating “on or off”, which stabilizes the temperature and reduces consumption.
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Modern refrigerant (R-32 / classification A2L) : more efficient and better aligned with evolving environmental standards.
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Silent operation : a crucial point when sharing party walls and close outdoor spaces.
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Year-round comfort : air conditioning in summer, efficient heating during the cold and intermediate seasons.
Exterior installation details: a layout designed for the Plateau
The photo shows an outdoor installation that is particularly representative of Montreal backyards:
1) Unit placed under a balcony / steel structure
The outdoor unit is installed under a black structure (balcony/terrace type) , which provides a concrete advantage: some protection against driving rain and direct snow accumulation, while maintaining adequate ventilation.
2) Sturdy wall mount with reinforcements
The unit is mounted on a steel wall bracket with support legs , fixed to the masonry. This method is ideal in the Plateau region.
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It frees up floor space (important when the yard is small),
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It limits the risks associated with snow/ice at ground level.
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It facilitates maintenance and clearance around the machine.
3) Careful management of refrigerated connections
The refrigerant lines are neatly insulated and grouped, with a route that respects aesthetics and protects the pipes. In an environment where passages are tight and external elements (branches, traffic, furniture) can cause damage, mechanical protection and a clear organization make all the difference.
4) Vibration reduction and stability
The installation rests on a stable base, with visible cushions/isolators at the support level, an important detail to limit the transmission of vibrations into the building structure—a frequent issue in brick buildings.
Better controlled comfort, summer and winter
In a neighborhood like the Plateau-Mont-Royal, temperature variations can be significant: high humidity in the summer, dry cold, and long heating periods in the winter. A properly sized Sharp wall-mounted heat pump allows you to:
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rapid air conditioning during heat waves
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An economical heating solution when electric baseboard heaters become expensive.
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a more stable temperature (fewer fluctuations and fewer aggressive cycles),
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improved everyday comfort, especially in open spaces or homes with higher ceilings.
The AirGreen method: a clean, sustainable, compliant installation
Our goal is not simply to "install a machine". We aim for an installation that remains efficient over time:
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choosing a logical and accessible outdoor location,
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solid and secure fixing to masonry,
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proper routing of the pipes,
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be mindful of the neighborhood (noise, vibrations),
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configuration optimized for the Montreal reality (snow, ice, freeze/thaw cycles).
It is this rigor that ensures that a Sharp ZU1 heat pump delivers its full performance and remains reliable year after year.