Installation of a SHARP ZU1 12,000 BTU Wall-Mounted Heat Pump in Sainte-Catherine – A Reliable and High-Performance HVAC Solution for Quebec's Climate

A model installation on a flat roof in Sainte-Catherine, serving year-round comfort

At AirGreen, we specialize in wall-mounted heat pump installations throughout Greater Montreal, including Sainte-Catherine, a city located on the South Shore. Today, we take you to the rooftop of a residential building, where we recently completed the installation of a SHARP ZU1 12,000 BTU wall-mounted heat pump. This unit was carefully selected for its optimal performance in harsh winter conditions, its Plasmacluster air purification technology, and its proven reliability in the Quebec climate.

Why is the SHARP ZU1 wall-mounted heat pump a great choice for Sainte-Catherine?

Extreme cold performance

The SHARP AY-XPC12ZU indoor unit paired with the AE-X12ZU outdoor unit, using eco-friendly R-32 refrigerant, is designed to operate efficiently down to -27°C, a non-negotiable feature for the Sainte-Catherine region. Even at this extreme temperature, the unit maintains a heating capacity of 7,200 BTU/h, ensuring continuous comfort even during the coldest spells.

Integrated Plasmacluster Technology

The ZU1 model comes equipped with SHARP’s exclusive Plasmacluster technology. This feature releases positive and negative ions, similar to those found in nature, allowing it to:

• Neutralize airborne viruses

• Eliminate bacteria, mold, and allergens

• Remove unpleasant odors (tobacco, pets, cooking)

• Reduce dust and fine particles

This makes the heat pump much more than just a heating or cooling appliance: it acts as a built-in air purifier, ideal for families who care about indoor air quality.

Technical details of the installed model

• Cooling capacity: 12,000 BTU/h (range: 2,800 – 13,600)

• Heating capacity: 14,000 BTU/h (range: 3,200 – 17,100)

• SEER: 21 / 22

• HSPF (IV): 12.5 / 11

• Indoor sound level: 23 to 42 dB – ultra-quiet

• Outdoor sound level: 49 dB

• Refrigerant: R-32, low GWP

• Maximum pipe length: 20 meters

• Warranty: up to 10 years (parts, compressor, and labor)

Installation context: a winter challenge on a flat roof

This installation took place in the heart of winter, with partial snow coverage and water runoff caused by typical February thaws. The system was installed on an accessible flat roof, at the back of a multi-unit residential building in Sainte-Catherine.

Challenges encountered:

1. Snow and ice accumulation: We had to manually clear the installation area, while being careful not to damage the roof’s waterproof membrane.

2. Water drainage: Thanks to SHARP’s exclusive HOT GAS PIPE system, the unit manages defrost cycles efficiently, preventing ice buildup around the drainage holes.

3. Stability on the roof: We used a raised stand with treated wooden beams and rubber dampers to ensure maximum stability while preventing direct contact with the roof surface.

A system designed for peace of mind

Energy security:

In the event of a power outage, the Auto Restart function allows the heat pump to automatically reboot with its previous settings, ensuring continuous comfort without user intervention.

Connectivity:

Although this model does not include Wi-Fi as standard, it can be added as an option, allowing for remote control via mobile app – ideal for multi-unit buildings.

Why choose AirGreen for your HVAC installation?

At AirGreen, we do far more than just install HVAC equipment. We assess every site, select the best solution for your specific needs, and guarantee a compliant, safe, and long-lasting installation. For this project in Sainte-Catherine:

• We obtained all required permits.

• The installation complies with Quebec’s electrical standards.

• A full start-up test was conducted, including checks of refrigerant pressure, power consumption, and ambient noise.

What our clients are saying

"The AirGreen team was fast, efficient, and professional. They completed the whole installation in a single day despite the snow. And since then, our unit keeps the home comfortable no matter how cold it gets outside."
— Property Manager, Sainte-Catherine

Potential grant eligibility

This SHARP ZU1 heat pump may qualify for several government subsidies (LogisVert, Rénoclimat, etc.), depending on building type and income. At AirGreen, we help you through the grant application process, maximizing your return on investment.

Tips for homeowners on the South Shore

• Plan your installation before deep winter to avoid long wait times.

• Schedule yearly maintenance, especially after the winter season.

• Ensure proper condensate drainage in winter: efficient defrosting is essential for system durability.

Conclusion

This installation of a SHARP ZU1 12,000 BTU wall-mounted heat pump in Sainte-Catherine is a perfect example of our expertise in high-altitude projects, in winter, and on sensitive surfaces like flat roofs. Thanks to a combination of advanced Japanese technology, integrated air purification, and a tailored professional installation, AirGreen continues to demonstrate why we are a leader in HVAC across Greater Montreal.