An elegant and efficient double wall installation for a typical Montreal duplex
In the residential neighborhood of LaSalle , we recently completed the installation of two Sharp ZU1 wall-mounted heat pumps on the rear facade of a red brick duplex , an iconic building type in Montreal. This intervention perfectly illustrates AirGreen 's expertise in the installation of modern, discreet and efficient HVAC systems, adapted to multi-unit buildings in Greater Montreal.
A project designed for performance and aesthetics
At AirGreen , we know that a successful installation isn't just about energy performance: it must also blend harmoniously with the building's architecture. On this LaSalle property, the Sharp ZU1 condensers were mounted on reinforced wall brackets , securely anchored to steel columns painted to match the existing brick. This choice ensures both optimal air circulation and protection against snow accumulation in winter.
Each outdoor unit powers an indoor head installed in separate living areas, ensuring tailored comfort on each floor of the duplex — while taking advantage of R-32 technology , which is more environmentally friendly and efficient than older R-410A refrigerants.
The Sharp ZU1 series: reliability and performance in extreme cold
The Sharp ZU1 is one of the most popular wall-mounted heat pumps in our residential range. Known for its stable operation down to -25°C , it perfectly meets the demands of Montreal's climate. Thanks to its inverter compressor and R-32 refrigerant, the ZU1 offers exceptional energy efficiency while reducing CO₂ emissions.
The main features of the series:
-
Available capacities: 12,000 to 24,000 BTU
-
High efficiency inverter technology
-
Energy Star Efficiency
-
Efficient heating mode down to −25°C
-
Quiet and compact
-
Eligible for certain Quebec subsidies (depending on configuration and power)
Technical details of the installation
For this installation, our team:
-
Fixed two Sharp ZU1 units on galvanized brackets at a safe height.
-
Installed refrigeration ducts covered to match the facade.
-
Provided for gravity condensate drainage , without the need for a pump, thus simplifying maintenance.
-
Made the electrical connections with a neat finish near the power panel.
-
Checked for leaks and pressures to ensure optimal performance upon commissioning.
The refrigeration pipes were carefully insulated to prevent any energy loss, and the electrical lines were protected in discreet capping, ensuring an installation that is as robust as it is elegant.
Adapted to the Montreal climate and brick buildings
Brick duplexes and triplexes, which are very common in LaSalle , often pose a particular challenge for HVAC installers. Exterior walls require secure, structurally sound mounting , and managing heights requires proper equipment, as evidenced by the large ladder deployed for upper ductwork.
Our team was able to adapt the route of the pipes to limit the visual impact and maintain an aesthetic consistent with the original architecture .
An installation carried out in the rain, without compromise
Even on a rainy day, our qualified technicians ensure precise work that complies with safety standards. Wet conditions require extra attention: grounding verification , temporary circuit protection, and enhanced leak testing before powering up. This level of rigor is at the heart of AirGreen's reputation in Montreal and the surrounding area.
A sustainable and profitable investment
The owners of this duplex now benefit from:
-
Four-season comfort , with efficient heating in winter and effective cooling in summer.
-
Reduced energy bills , thanks to the high energy efficiency of the ZU1 units.
-
Increased real estate value , as modern, Energy Star certified wall systems are highly sought after in the Montreal rental market.
-
Peace of mind , assured by simplified maintenance and the reliability of the Sharp brand.
Why choose AirGreen for your heat pump installations in Montreal
At AirGreen , we combine:
-
Local expertise acquired through hundreds of installations in Montreal, Laval, Longueuil, the North Shore and the South Shore.
-
A selection of well-known brands , including Sharp, Fujitsu, Midea, Gree and Hitachi.
-
Personalized technical advice , adapted to each building and each budget.
-
Complete support : assessment, installation, maintenance and assistance for grant programs.
We place quality, precision, and customer satisfaction at the heart of every project—whether it's an urban duplex, a single-family home, or a new condo.