Installation of a Sharp ZU1 Wall-Mounted Mini Split in Nun's Island
Discover the energy-efficient Sharp ZU1 mini-split heat pump, expertly installed by AirGreen on Nun’s Island. Perfect for Quebec winters, this system offers air purification, smart control, and top-notch reliability.
In summer, the outdoor unit rejects the house's heat outside.
Generic illustration of this type of installation, not a survey of this job site. Tap a number.
Mounted level on a wall plate, high enough for the air to reach the whole room, with enough space around it to slide the filters out easily.
The refrigerant lines, the communication cable and the drain go through the wall in a single opening, sealed against water, cold air and insects.
Two insulated copper pipes connect the two units. Outside, a line cover can protect them from sun, knocks and weather.
A shut-off switch near the outdoor unit isolates it safely for service. It must stay accessible at all times.
The compressor and the fan. In heating mode it captures heat from the outdoor air, even in winter, and moves it inside.
On the ground or on the wall, it keeps the unit above accumulated snow. The unit stays clear and defrost water can drain away.
The fan needs to blow freely. Storage, a fence or a wall too close, and efficiency drops while noise goes up.
Sharp ZU1: The Smart Choice for Energy Efficiency and Comfort
At AirGreen, we take pride in every installation, ensuring that our customers benefit from both comfort and energy efficiency. This recent installation on Nun’s Island (Île-des-Sœurs) showcases one of the best choices on the market today: the Sharp ZU1 Wall-Mounted Mini Split, boasting 15,000 BTU of heating and cooling power. With Quebec’s unpredictable weather and the coldest months dipping to -27°C, this machine is designed to keep homes cozy without breaking the bank.
Why the Sharp ZU1 is Perfect for Nun’s Island Homes
Our team at AirGreen installed this Sharp ZU1 in a beautiful home on Nun’s Island. Known for its modern architecture and serene landscapes, Nun’s Island is home to many families and professionals who demand a balance between comfort and sustainability. With rising energy costs and the push for environmentally friendly solutions, the Sharp ZU1’s energy efficiency and modern features make it an ideal fit.
Key Features of the Sharp ZU1 Heat Pump:
- Cooling Capacity: 15,000 BTU, perfect for large living spaces.
- Heating Capacity: Operates effectively down to -27°C, ensuring warmth even in Quebec’s harsh winters.
- Energy Star Certified: This heat pump meets the highest efficiency standards, helping homeowners save on energy bills.
- WiFi Connectivity: Full control over your system from your smartphone, allowing real-time adjustments no matter where you are.
The Installation Process: Craftsmanship Meets Efficiency
At AirGreen, we take every detail into account to ensure a seamless installation process. For this particular project, our technicians faced a challenge due to the limited space in the backyard, but they executed the job perfectly, ensuring the outdoor unit was placed in a location that maximized both efficiency and airflow while maintaining the aesthetic appeal of the home.
Our installation process also included mounting the indoor unit in a central area of the home, allowing for optimal air distribution. This Sharp ZU1 mini-split is equipped with Coanda airflow control, meaning it provides even temperature distribution without uncomfortable drafts. Thanks to Plasmacluster technology, the air inside the home stays clean and purified—removing allergens, mold, and even odors.
Why Sharp ZU1 Stands Out
One of the most attractive features of the Sharp ZU1 is its eligibility for the LogisVert Grant from Hydro-Québec, with a rebate of up to $2,172, making it the most cost-effective choice for 15,000 BTU systems in the province. The grant makes a big difference for homeowners looking for both high-quality performance and financial savings.
With the Sharp ZU1, customers receive a heat pump that’s not only budget-friendly but also packed with advanced features like its R-32 refrigerant, which is 10% more energy-efficient than older models using R-22. This refrigerant significantly reduces the unit’s environmental impact while also saving on electricity.
Benefits of the Sharp ZU1:
- Environmentally Friendly: The use of R-32 refrigerant cuts down on greenhouse gas emissions.
- Quiet Operation: With an exterior sound pressure level of 49 dB(A) and an interior level as low as 23 dB(A), this unit operates almost silently.
- Long-Lasting Durability: The anti-corrosive coating and multi-drainage system ensure a longer life, even in extreme weather conditions.
Air Purification: A Unique Advantage of Sharp
The Plasmacluster feature is one of the most unique selling points of the Sharp ZU1. This technology reproduces nature’s air purification process, neutralizing airborne viruses and bacteria, mold spores, and even household odors. For anyone suffering from allergies or simply wanting cleaner indoor air, this system goes beyond what standard mini-splits offer.
Imagine walking into a space where the air feels fresh and free from pollutants. That’s exactly what the Sharp ZU1 delivers. For families on Nun's Island, this has been a game-changer, especially during the winter months when homes are sealed off from fresh outdoor air.
Handling Quebec Winters Like a Pro
The winters in Quebec can be brutal, with temperatures plummeting far below freezing. The Sharp ZU1’s Hot Gas Pipe System and advanced defrost features ensure that the unit continues to work efficiently, even at temperatures as low as -27°C. This allows homeowners to enjoy consistent heating, while other systems might falter in extreme cold.
We’ve seen how the Sharp ZU1 outperforms many other units in the market when it comes to operating in these extreme conditions. The multi-drainage system also prevents water from freezing in the compressor, ensuring that the unit continues to function optimally through every season.
Energy Efficiency and Sustainability
At AirGreen, we are committed to promoting energy efficiency and sustainability. The Sharp ZU1 Wall-Mounted Heat Pump is at the forefront of this mission. Not only does it boast an impressive 24.0 SEER rating, but its inverter technology also ensures that the system adjusts its power consumption based on the room’s temperature—keeping energy bills low without compromising on comfort.
The inverter technology allows for variable-speed operation, so the Sharp ZU1 doesn’t waste energy by constantly turning on and off. Instead, it runs continuously at lower speeds, maintaining a consistent temperature and using up to 30% less energy compared to non-inverter models.
Why Choose AirGreen for Your Installation?
When it comes to HVAC installations in Montreal, Laval, Longueuil, and the surrounding areas, AirGreen is the name you can trust. We take pride in our craftsmanship, our attention to detail, and our commitment to customer satisfaction.
This recent installation on Nun's Island is a testament to our team’s expertise. Whether you’re looking for a mini-split for cooling, heating, or air purification, we’ll ensure the job is done right. The Sharp ZU1 is not just a heat pump—it’s an investment in your home’s comfort and efficiency.
We offer 10-10-10 warranties: 10 years on parts, 10 years on the compressor, and 10 years on labor. Our customers can rest easy knowing that their investment is protected for the long haul.
Conclusion: Transform Your Home with AirGreen
If you're in Montreal, Laval, Longueuil, or the North and South Shore areas, and are in need of an energy-efficient and environmentally friendly HVAC solution, the Sharp ZU1 Wall-Mounted Mini Split could be the perfect choice for you. With superior air purification, energy savings, and cutting-edge technology, it's designed to handle Quebec's toughest winters and provide comfort year-round.
At AirGreen, we stand behind the Sharp ZU1 because we know it delivers on performance, reliability, and sustainability. Ready to upgrade your home’s comfort? Contact us today to learn more about our installation services and how the Sharp ZU1 can transform your living space.
How it goes, from the first call to the end
The main steps of this kind of job at AirGreen. Every house has its quirks: the estimate brings them out.
We look at the room, the outside wall, the line route and where the outdoor unit will go. That is where the capacity gets chosen.
Model, capacity and price, in writing. We also check whether the model qualifies for assistance programs.
Floors and furniture protected, wall plate position marked level, wall opening located.
A single opening, with the slope the drain needs to flow outside.
Set on a stand raised above the snow, with the clearances the manufacturer requires.
Connected, insulated and protected. The opening is then sealed against water, cold air and insects.
A dedicated circuit and an accessible disconnect near the outdoor unit.
Leak test, vacuum, then start-up and a check of heating and cooling.
Remote, modes, filters: we show you the essentials before we leave.
- The on-site estimateWe look at the room, the outside wall, the line route and where the outdoor unit will go. That is where the capacity gets chosen.
- The quoteModel, capacity and price, in writing. We also check whether the model qualifies for assistance programs.
- Getting readyFloors and furniture protected, wall plate position marked level, wall opening located.
- The wall openingA single opening, with the slope the drain needs to flow outside.
- The outdoor unitSet on a stand raised above the snow, with the clearances the manufacturer requires.
- Lines, cable and drainConnected, insulated and protected. The opening is then sealed against water, cold air and insects.
- The electrical workA dedicated circuit and an accessible disconnect near the outdoor unit.
- Tests and start-upLeak test, vacuum, then start-up and a check of heating and cooling.
- The walkthroughRemote, modes, filters: we show you the essentials before we leave.
What the unit delivers when it is cold
The range as published on airgreen.ca: pick a size to see its capacity in deep cold.
| Size | Heating at −8 °C | Heating at −15 °C | Coldest certified point | COP at −15 °C | SEER | HSPF | Indicative LogisVert aid |
|---|---|---|---|---|---|---|---|
| Sharp ZU1 12 000 | 14,500 | 12,000 | −27 °C: 7,200 | 2.11 | 22.0 | 11.0 | $1,740 |
| Sharp ZU1 15 000 | 18,100 | 15,300 | −27 °C: 10,100 | 2.1 | 24.0 | 11.0 | $2,172 |
| Sharp ZU1 18 000 | 22,000 | 18,000 | −27 °C: 11,500 | 2.2 | 24.0 | 11.0 | $2,640 |
| Sharp ZU1 24 000 | 22,400 | 19,000 | −27 °C: 12,300 | 2.2 | 22.0 | 11.0 | $2,688 |
According to NEEP, it delivers 14,500 BTU/h at −8 °C (17 °F), more than at 8 °C (14,000 BTU/h). It heats as hard in moderate cold as in mild weather.
According to NEEP, its certified maximum capacity at −27 °C (−17 °F) is 7,200 BTU/h, 60% of its nominal 12,000 BTU size.
At 8 °C, its certified maximum capacity reaches 17,100 BTU/h, 42% more than its nominal 12,000 BTU size.
According to NEEP, it delivers 18,100 BTU/h at −8 °C (17 °F), more than at 8 °C (18,000 BTU/h). It heats as hard in moderate cold as in mild weather.
According to NEEP, its certified maximum capacity at −27 °C (−17 °F) is 10,100 BTU/h, 67% of its nominal 15,000 BTU size.
At 8 °C, its certified maximum capacity reaches 21,800 BTU/h, 45% more than its nominal 15,000 BTU size.
According to NEEP, it delivers 22,000 BTU/h at −8 °C (17 °F), more than at 8 °C (21,600 BTU/h). It heats as hard in moderate cold as in mild weather.
According to NEEP, its COP at −27 °C is 1.88: the highest of the ZU1 line, which ranges from 1.79 to 1.82 at that temperature.
According to NEEP, its certified maximum capacity at −27 °C (−17 °F) is 11,500 BTU/h, 64% of its nominal 18,000 BTU size.
At −27 °C, its certified minimum capacity is 3,200 BTU/h (5,500 at 8 °C). It slows down instead of cycling on and off.
According to NEEP, its certified heating capacity at −15 °C (5 °F) is 19,000 BTU/h, 79% of its nominal 24,000 BTU size. Its COP there is 2.20.
Data read live from the airgreen.ca page of each size (NEEP / AHRI certified performance). When the title names the installed size, it is highlighted; otherwise the whole range is shown. The aid shown is today’s, using Hydro-Québec’s rule ($120 per 1,000 BTU/h at −8 °C); amounts quoted in the article date from its publication. Only Hydro-Québec confirms the assistance granted.
And at your place?
Two quick checks with real numbers: what heat costs, and what your current heaters add up to in BTU/h.
Baseboards and electric furnaces turn 1 kWh of electricity into 1 kWh of heat. A heat pump delivers more: that is its COP. At Hydro-Québec’s rate D (11.142¢/kWh above 40 kWh a day, since 1 April 2026):
Hydro-Québec: a heat pump can be up to three times more efficient than baseboards for heating in the colder months.
Estimate per kWh of heat, at the chosen temperature, using the certified COP from the product page. Taxes, access charge and backup heat not included.
Conversion: 1 W = 3.412 BTU/h. An indication, not a load calculation: baseboards and furnaces are often stronger than the real need, and they can stay as backup. AirGreen confirms the capacity on site.
What to do, season by season
Three habits per season for this unit. They take a few minutes and prevent many calls.
- Clean the indoor unit's filters.
- Clear leaves and debris left on the outdoor unit by winter.
- Test cooling before the first hot days.
- Clean the filters more often when the unit runs a lot.
- Keep plants away from the outdoor unit.
- Check that no water drips from the indoor unit.
- Rake the leaves around the outdoor unit.
- Test heating before the first cold days.
- Book periodic maintenance before winter.
- Keep snow away from the stand and the front of the unit.
- Let the unit defrost: it is normal.
- Never hit the ice on the fins; call us if the unit stays iced up.
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What people ask us about this kind of work
Does a wall-mounted heat pump heat in winter?
Wall-mounted or multi-zone: how do I choose?
Where does the outdoor unit go?
Are there grants?
Do I need a permit?
How cold can it heat?
How much can I save?
How is the LogisVert assistance calculated?
Is it noisy?
The outdoor unit is covered in ice: is that normal?
Does AirGreen hold the required licences?
Is the estimate free?
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Text and photo: a real AirGreen Climatisation & Chauffage job. The diagrams are generic illustrations of the type of installation, not a survey of this job site. Sources of the added figures: airgreen.ca product pages (NEEP / AHRI performance), Hydro-Québec (Heat pumps page, LogisVert, read on 13 October 2026), Régie de l’énergie (rate D as of 1 April 2026).