An AirGreen under-deck installation for optimal performance despite the harsh winters of the South Shore
At AirGreen, we recently completed a standout installation in Varennes, on the South Shore of Montréal, showcasing our expertise in residential HVAC and our commitment to technical excellence. We carried out the installation of a SHARP ZU1 15,000 BTU wall-mounted heat pump, a system designed to deliver year-round thermal comfort—even during extreme cold spells.
This project had several unique features, including a wall-mounted exterior unit on galvanized steel brackets, installed beneath a raised deck for protection against snow buildup. This smart configuration maximizes the unit’s lifespan and winter performance while ensuring a clean and secure aesthetic.
Why choose the SHARP ZU1 15,000 BTU wall-mounted heat pump in Varennes?
The decision to install the SHARP ZU1 series wall-mounted heat pump, model AY-XP15ZU1 / AE-X15ZU1, was based on several technical and environmental factors.
Technical specifications of the installed model:
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Cooling capacity: 15,000 BTU/h (range of 5,000 to 17,000 BTU/h)
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Heating capacity: 18,000 BTU/h (range of 4,500 to 21,800 BTU/h)
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Extreme cold performance: Up to 10,100 BTU/h at -27°C, ideal for winter conditions in Varennes.
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Energy efficiency:
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SEER: 24
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HSPF IV/V: 11.8 / 11 – 9.5 / 8.7
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Eco-friendly refrigerant: R32, with a Global Warming Potential (GWP) one-third lower than R410A
This unit stands out for its robustness and low-temperature performance. Thanks to its exclusive “Hot Gas Pipe” system, it evacuates condensate even at -27°C—an essential feature in a northern climate like that of Montérégie.
An installation designed for both climate and home architecture
1. Strategic under-deck placement
The outdoor unit was wall-mounted under the deck, for several key reasons:
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Protection from snow and ice
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Maintains rear clearance for proper ventilation
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Easy winter maintenance access
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Reduces noise pollution in the backyard
This setup ensures long-term durability while respecting both structural and aesthetic constraints of the home.
2. Professionally managed refrigerant lines
The AirGreen team carefully ran the refrigerant lines, which were sleeved, insulated, and neatly secured to the wall. High-quality insulation materials reduce thermal losses and protect the integrity of the system throughout the year.
3. Protected electrical connection
The unit is powered through a DiversiTech disconnect box, ergonomically positioned for service and fully compliant with current Québec electrical codes.
Plasmacluster technology: a unique air-quality advantage
The SHARP ZU1 series is equipped with the famous Plasmacluster technology, exclusive to the brand. It emits positive and negative ions that neutralize:
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Bacteria
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Mold
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Airborne viruses
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Odors
This system works in tandem with conventional filtration to actively improve indoor air quality, a highly sought-after benefit for families—especially during long winters when windows remain closed for extended periods.
A unit certified for Quebec's harsh climate
Unlike many brands that lose significant heating power below -15°C, the SHARP ZU1 heat pump continues to operate efficiently down to -27°C. This makes it a reliable and viable solution even in colder areas like Varennes, where temperatures often drop well below freezing.
Thanks to its AHRI certification and proven performance in cold climate conditions, this model is eligible for government incentives, such as Hydro-Québec’s LogisVert Program (subject to final eligibility confirmation).
Year-round comfort with whisper-quiet operation
The indoor unit’s sound level is exceptionally low (down to 26 dB), making it an ideal choice for bedrooms or quiet living spaces. With adjustable airflow, an intuitive remote, and rapid dehumidification capabilities, this unit provides total comfort all year round.
What the client loved about the Varennes installation
✅ Fast, stable thermal comfort
✅ Whisper-quiet operation
✅ Compact and discreet design
✅ Clean, professional installation
✅ Prompt, transparent, and professional service from AirGreen
Why trust AirGreen for your HVAC projects?
At AirGreen, we combine technical expertise, real-world experience, and high-performance equipment to deliver installations that are reliable, durable, and visually clean. Our certified technicians follow the highest industry standards and provide personalized service from the first call to final system activation.
We proudly serve Montréal, Laval, Longueuil, and the South Shore and North Shore, with thousands of projects completed in a wide range of settings (residential, light commercial, renovations, and new builds).
Conclusion: A standout installation in Varennes
This installation of a SHARP ZU1 15,000 BTU wall-mounted heat pump in Varennes perfectly illustrates our ability to adapt HVAC solutions to each client’s specific needs and environmental conditions. With advanced Japanese technology from SHARP, eco-friendly R32 refrigerant, and AirGreen’s meticulous installation work, this home is now equipped to face every season with comfort, efficiency, and peace of mind.