Installation of a Sharp ZU1 Wall-Mounted Heat Pump in Sainte-Thérèse
See how we transformed a Sainte-Thérèse home with the Sharp ZU1 heat pump, offering energy efficiency, air purification, and superior comfort for extreme Quebec winters.
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.
An Eco-Friendly Solution for Year-Round Comfort
In the picturesque city of Sainte-Thérèse, another remarkable project was recently completed by our team at AirGreen. We installed a Sharp ZU1 12,000 BTU wall-mounted heat pump, a system designed to deliver unmatched comfort, efficiency, and sustainability. This cutting-edge mini-split unit not only enhances indoor living but also ensures year-round energy savings, making it a perfect choice for Quebec's challenging climate.
Meeting the Homeowner’s Needs in Sainte-Thérèse
When the homeowner reached out to us, they were looking for an efficient, compact, and reliable system capable of maintaining comfortable temperatures in both summer and winter. With Sainte-Thérèse’s icy winters often dropping to -27°C, the solution had to withstand extreme conditions while keeping energy costs manageable.
After assessing the property’s unique needs, we recommended the Sharp ZU1 wall-mounted heat pump. This model, with its impressive 12,000 BTU cooling capacity and advanced heating capabilities, stood out as the ideal fit. Its Energy Star certification and use of R-32 refrigerant, which is 10% more efficient than traditional options, provided additional eco-friendly benefits that aligned perfectly with the homeowner’s goals.
Why the Sharp ZU1 is a Game-Changer
The Sharp ZU1 is no ordinary mini-split system. Designed with Japanese engineering precision, it combines cutting-edge technology with innovative features, making it one of the most advanced wall-mounted heat pumps on the market. Let’s explore some of its standout capabilities:
1. Exceptional Cold Climate Performance
The ZU1 can operate efficiently in temperatures as low as -27°C, ensuring consistent heating even during Quebec’s harshest winters. This is made possible through its Hot Gas Pipe System, which prevents the outdoor compressor from freezing, maintaining optimal performance all year round.
2. Plasmacluster Technology
Sharp’s proprietary Plasmacluster air purification system is a health-conscious addition. It:
- Eliminates airborne viruses, bacteria, and allergens.
- Removes mold and sticky odors.
- Improves indoor air quality, creating a safer and more comfortable environment.
3. Coanda Airflow for Optimal Comfort
The Coanda effect ensures even temperature distribution by directing warm air downward in winter and cool air upward in summer. This advanced airflow control eliminates drafts and hotspots, providing a uniform temperature throughout the home.
4. Energy Efficiency
With an efficiency rating of 22.0 SEER, the Sharp ZU1 minimizes energy consumption, translating to significant savings for homeowners. The use of R-32 refrigerant further reduces environmental impact by cutting greenhouse gas emissions.
Seamless Installation by AirGreen Experts
Our installation process in Sainte-Thérèse was meticulously planned to ensure the system would perform at its peak. Here’s how we executed the project:
Step 1: Comprehensive Assessment
We began by evaluating the property layout and determining the optimal placement for both the indoor and outdoor units. The indoor head unit was installed in the main living area to maximize airflow, while the outdoor compressor was mounted securely on an exterior brick wall, elevated to prevent snow accumulation during winter.
Step 2: Efficient Piping and Wiring
Using high-quality 1/4 and 3/8-inch piping, we connected the indoor and outdoor units with precision. This ensured efficient refrigerant flow and minimized energy losses. All wiring was neatly concealed, maintaining the aesthetic integrity of the property.
Step 3: Testing and Calibration
Once installed, we thoroughly tested the system to ensure seamless operation. Using advanced calibration tools, we adjusted the system to optimize performance for the specific needs of the home.
Eligible for the LogisVert Grant
One of the highlights of this installation is the eligibility of the Sharp ZU1 heat pump for a $1,740 LogisVert Grant provided by Hydro-Québec. This government incentive significantly reduces the upfront cost of upgrading to an energy-efficient system, making it an attractive option for environmentally conscious homeowners.
Compact Design with Big Benefits
Despite its compact dimensions—measuring just 34.61" x 9.02" x 11.38" for the indoor unit and 30.72" x 10.59" x 21.25" for the outdoor unit—the Sharp ZU1 delivers robust performance. Its quiet operation (only 23 dB(A) indoors) ensures it won’t disrupt the peace and quiet of your home. Whether you’re hosting guests or enjoying a family movie night, the Sharp ZU1 blends into your lifestyle seamlessly.
Built to Withstand Quebec’s Winters
The Sharp ZU1 is equipped with multiple drainage holes and an anti-corrosive coating, ensuring durability even in the face of ice, snow, and salt. Its self-cleaning mode further extends its lifespan by preventing mold buildup, keeping the system running smoothly for years to come.
Advanced Connectivity Features
Modern homeowners love convenience, and the Sharp ZU1 doesn’t disappoint. With built-in WiFi connectivity, you can control the system remotely via a smartphone app. Adjust temperatures, monitor energy usage, and even receive maintenance alerts—all from the palm of your hand.
Why Choose AirGreen?
At AirGreen, we pride ourselves on delivering top-tier HVAC solutions tailored to each client’s needs. From product recommendations to meticulous installations, our team is dedicated to ensuring your complete satisfaction. Here’s what sets us apart:
- Expertise in Extreme Climates: We specialize in systems that thrive in Quebec’s unique weather conditions.
- Customer-Centric Approach: Your comfort and satisfaction are our top priorities.
- Eco-Friendly Practices: We promote sustainable solutions that benefit both your home and the environment.
Conclusion: Transform Your Home with AirGreen and Sharp
The installation of the Sharp ZU1 wall-mounted heat pump in Sainte-Thérèse is a testament to the perfect blend of cutting-edge technology, professional installation, and customer-focused service. Whether you’re looking to beat the summer heat or stay cozy during winter, this system has you covered.
Don’t wait to upgrade your home’s comfort and efficiency. Contact AirGreen today to learn more about the Sharp ZU1 and discover how we can help you create a more comfortable, eco-friendly living space.
Specifications at a Glance
- Cooling Capacity: 12,000 BTU
- Heating Capacity: -27°C
- Refrigerant: R-32
- Efficiency Rating: 22.0 SEER
- Sound Pressure Level (Indoor/Outdoor): 23-43 dB(A) / 49 dB(A)
- Warranty: 10 years (Compressor, Parts, and Labor)
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?
No question matches. Write to us: we answer.
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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).