A strategic installation for optimal comfort in a narrow staircase
At AirGreen , we know that every wall-mounted heat pump installation project in Montreal requires meticulous planning. In this specific case, our team worked on a duplex in the Villeray–Saint-Michel–Parc-Extension neighborhood, where the client wanted to improve air circulation between floors with a Sharp ZU1 R-32 . The goal was clear: achieve balanced comfort, summer and winter, in an area that is often difficult to air condition—the stairwell.
Why the Sharp ZU1 R-32 was the perfect choice
The Sharp ZU1 series is renowned for its efficiency in northern climates, capable of operating down to -25°C, which is perfectly suited to the needs of Montreal families.
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Installed capacity: 12,000 BTU, perfectly suited to the volumes of air moving in stairwells and landings.
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Refrigerant used: R-32, more environmentally friendly and compliant with new regulations.
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Energy Savings: With a high SEER and high HSPF2 efficiency, annual heating and cooling costs are reduced.
The challenges of installing in a stairwell
Installing a wall unit in a staircase presents unique constraints:
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Working height: Our technicians used a compact scaffolding system to secure the unit at an optimal height, ensuring good air diffusion.
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Restricted access: the passage of the refrigeration connections required a discreet drilling behind the unit, to reach the exterior facade without compromising the interior aesthetics.
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Condensate management: gravity flow was able to be implemented, avoiding the installation of an additional pump, which reduces the risk of future maintenance.
Result and comfort obtained
Once in service, the customer noticed an even distribution of air throughout the house:
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Fresh air naturally circulates to the upper floors in summer.
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In winter, the heat remains uniform, which reduces cold areas on the ground floor.
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The discreet integration of the unit into a passageway ensures increased comfort without cluttering the living areas.
Grants and financial benefits
The installation of this Sharp ZU1 R-32 heat pump makes the customer eligible for grant programs offered by Hydro-Québec and LogisVert , as it is a high-performance Energy Star device, perfectly adapted to the rigors of the Quebec climate.
AirGreen: local expertise in Montreal
This project demonstrates our ability to adapt each installation to the specific constraints of Greater Montreal homes. Whether duplexes, condos, or single-family homes, we offer customized HVAC solutions to ensure comfort, efficiency, and peace of mind.