A technical winter intervention on a multi-story residential building
At AirGreen, we’re used to tackling all kinds of technical challenges. But this installation of a SHARP ZU1 18,000 BTU wall-mounted heat pump in Oka truly put both our expertise and equipment to the test. Performed in the heart of winter under tough weather conditions, this project required a boom lift to reach a three-story-high façade. The building, entirely clad in red brick with green wood trim, offered no conventional access points. This type of project perfectly illustrates the versatility of our team, their ability to adapt, and to deliver flawless results even in complex situations.
Features of the SHARP ZU1: performance and reliability down to -27°C
The SHARP ZU1 18,000 BTU wall-mounted heat pump, using R-32 refrigerant, is built to handle Québec’s harshest winters. This model is well-known for its reliable operation down to -27°C, making it especially suited for areas like Oka, where winter temperatures often plummet. Here are some key technical specifications:
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Heating output: up to 21,600 BTU/h
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Output at -27°C: 11,500 BTU/h steady
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SEER: 24
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HSPF (V): 10
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Refrigerant: R-32, low global warming potential (GWP)
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Exclusive Plasmacluster technology: actively purifies indoor air
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Compact design: indoor unit weighs 31 lb (14 kg), outdoor unit 95 lb (43 kg)
This heat pump doesn’t just heat efficiently. Thanks to Plasmacluster technology, it also enhances indoor air quality by eliminating bacteria, viruses, allergens, and odors—a huge benefit for families concerned about respiratory health.
An elevated winter installation: technical challenges and AirGreen’s solutions
The main challenge in this Oka installation was accessing the mounting point, located at a difficult height. In winter, snow, freezing temperatures, and wind can compromise safety and slow down the work. Here’s how we approached it:
Safety first:
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Site assessment beforehand to confirm ground stability for lift use.
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Winter installation with reinforced safety measures (harnesses, thermal clothing, wind monitoring).
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Use of an articulating boom lift to access the upper floor section of the building.
Technical prep:
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Precise drilling through red brick for refrigerant lines.
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Narrow routing of insulated pipes to avoid heat loss.
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Installation of a discreet technical duct, painted red to blend with the building, ensuring a clean aesthetic finish.
Mounting and setup:
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Outdoor unit securely mounted on a reinforced wall bracket at the back of the building.
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Electrical connection and communication with the indoor unit using CSA-certified wiring.
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Start-up tests and configuration of the smart thermostat.
Optimal comfort and energy efficiency: a strategic choice for the homeowner
The homeowner of this property in Oka was looking for an energy-efficient solution to replace an old, inefficient and power-hungry heating system. The SHARP ZU1 offered the perfect balance:
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Consistent indoor comfort, even at -25 °C to -27 °C
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Significant energy savings thanks to its high-efficiency inverter
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Smart control via Wi-Fi, allowing remote adjustments from a phone
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Quiet operation, in both heating and cooling modes
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Eligibility for the LogisVert program by Hydro-Québec (up to $1,704 rebate for this installation)
Why choose AirGreen for complex wall-mounted heat pump installations?
Our customers throughout Montréal, Laval, Longueuil, the North Shore, and the South Shore trust us for many reasons:
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Real-world experience on complex projects like this one in Oka
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Certified technicians, trained on all SHARP, Gree, Fujitsu models and more
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Use of CSA-certified professional materials and full compliance with building codes
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Expertise in handling energy rebates to help maximize your investment
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Ability to work even under difficult weather conditions
Final result: a reliable, clean, and high-performing installation
Just a few hours after arriving on-site—and despite the snowstorm—the SHARP ZU1 18,000 BTU wall-mounted heat pump was fully installed and operational. The homeowner now enjoys:
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Consistent heating comfort
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Purified indoor air thanks to Plasmacluster technology
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A significant drop in heating costs
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A flawless exterior finish, with clean and integrated installation
In conclusion: a high-value installation
This Oka project reflects our commitment to delivering highly specialized HVAC solutions, even in the most demanding conditions. With SHARP and AirGreen, clients gain peace of mind and optimal energy performance. A wall-mounted heat pump like the SHARP ZU1 isn’t just a unit—it’s a smart and long-term investment, backed by top-tier professional service.
