Installation of a Sharp ZU1 Wall-Mounted Heat Pump in Sainte-Thérèse
Discover the benefits of the 15,000 BTU Sharp ZU1 heat pump installed in Sainte-Thérèse, providing energy-efficient comfort and the highest LogisVert Grant for a mini split in Quebec!
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.
Experience Energy Efficiency and Comfort with the Sharp ZU1 Heat Pump
At AirGreen, we take pride in bringing top-quality HVAC solutions to homes across Greater Montreal. Our latest project took us to Sainte-Thérèse, where we installed the 15,000 BTU Sharp ZU1 wall-mounted heat pump. This advanced system not only delivers superior performance but also meets the needs of energy efficiency and environmental sustainability. With an exceptional 24.0 SEER rating and the latest R-32 refrigerant, the ZU1 sets a new standard in heating and cooling technology, providing reliable comfort even in the harshest Quebec winters. Below, we dive into the details of this installation and why it is the perfect choice for homeowners in the Montreal region.
Why the Sharp ZU1 Heat Pump Stands Out
The Sharp ZU1 heat pump offers a remarkable combination of efficiency and innovation, making it ideal for Sainte-Thérèse's demanding climate. With cutting-edge Plasmacluster technology, it ensures a clean and healthy indoor environment, actively purifying the air by neutralizing airborne bacteria, viruses, and mold. Its ability to maintain comfort down to -27°C is a game-changer for Quebec residents, who need reliable heating during the long winter months.
The installation qualifies for the LogisVert Grant by Hydro-Québec, providing homeowners with a $2,172 rebate—the highest grant available for any 15,000 BTU mini split in Quebec. This financial incentive, combined with the energy-saving capabilities of the ZU1, makes it an appealing investment for those looking to upgrade their home's HVAC system.
The Installation Process: Quality Workmanship from Start to Finish
When our team arrived at the Sainte-Thérèse residence, we focused on finding the ideal placement for the outdoor unit to maximize efficiency and airflow control. The outdoor unit was securely mounted on the exterior wall, supported by sturdy brackets that ensure stability while minimizing vibrations. This positioning helps to optimize heat transfer and contributes to quiet operation, with an exterior sound pressure level of 49.0 dB(A). The unit was installed with an eye toward aesthetic appeal and functionality, ensuring it would blend seamlessly with the home's exterior while maintaining optimal performance.
The indoor unit was strategically placed to allow even distribution of heated or cooled air throughout the living space. With the Coanda airflow control, the ZU1 directs air toward walls and ceilings to prevent drafts, making the room more comfortable without the sensation of air blowing directly on occupants. The system's long diffuser flap allows for air circulation over distances of up to 15 meters, covering multiple rooms and ensuring uniform temperature control.
Sharp's Plasmacluster Technology: A Healthier Indoor Environment
A standout feature of the Sharp ZU1 heat pump is its Plasmacluster technology, which purifies the air by generating positive and negative ions similar to those found in nature. These ions actively seek out and neutralize airborne contaminants, such as allergens, mold spores, and odors, making the ZU1 ideal for families who want a healthier indoor space. This is particularly beneficial for homes in Sainte-Thérèse, where humidity and air quality can fluctuate, especially during seasonal changes.
How Plasmacluster Works: Three Steps to Clean Air
- Ion Diffusion: The system releases positive and negative ions into the air, which attach to airborne pollutants.
- Contaminant Breakdown: These ions transform into highly oxidized hydroxyl radicals that attack surface proteins of allergens and viruses, effectively neutralizing them.
- Reversion to Water: The radicals combine with hydrogen to form water molecules, which are harmlessly released back into the air.
With over 100 million units equipped with Plasmacluster technology sold worldwide, it's clear that Sharp's commitment to air purification is well-established.
Energy Efficiency and Environmental Responsibility
The installation of the Sharp ZU1 in Sainte-Thérèse marks a significant step toward sustainable living. By utilizing R-32 refrigerant, which has a lower global warming potential than older refrigerants like R-22, the ZU1 reduces its environmental footprint. Additionally, the inverter technology adjusts compressor speed to maintain the desired temperature with minimal energy consumption, lowering energy bills and benefiting the environment. This system doesn't just meet current energy standards; it is also future-proof, ready for upcoming 2025 efficiency regulations.
The Challenges of Heating in Quebec's Winters and How the ZU1 Meets Them
Heating homes in Quebec is no easy task, with sub-zero temperatures often persisting for months. However, the Sharp ZU1 heat pump is engineered to operate efficiently in extreme cold. The Hot Gas Pipe system keeps the outdoor compressor warm, ensuring it doesn't freeze even at -27°C. Additionally, the defrost cycle is quick and efficient, reducing heating downtime by 60%, so homeowners enjoy consistent warmth.
Innovative Solutions for Efficient Defrosting
The ZU1's defrost function uses a hot gas circulation system that channels heat to the condensation pan, preventing ice buildup and ensuring that drain water flows freely. This feature is particularly advantageous for outdoor units in Sainte-Thérèse, where winter frost can quickly accumulate. With multiple drainage holes, the system effectively manages water flow, extending the lifespan of the unit.
Multi-Space Comfort with Coanda Airflow and Extended Coverage
The Coanda airflow control, a feature inspired by natural fluid mechanics, allows the ZU1 to distribute air uniformly across multiple rooms. This is perfect for homes with open layouts or multiple levels, as it prevents hot and cold spots. For Sainte-Thérèse homeowners, this means comfort in every corner of the house without having to constantly adjust settings.
The multi-space function on the remote allows for precise temperature control across various rooms, harmonizing the environment according to the needs of the occupants. This makes the ZU1 heat pump an ideal solution for those seeking to maximize comfort and minimize energy waste.
Connectivity and Control: Smart Features for Modern Living
Today’s homeowners value connectivity, and the Sharp ZU1 doesn't disappoint. With built-in WiFi, users can control their HVAC system remotely via a smartphone app. This app provides real-time data on temperature, humidity, and energy consumption, enabling users to optimize usage patterns and save on energy costs. It even supports GPS-based locking, alerting users if the unit is still on when they leave home and offering the ability to adjust settings remotely.
Customer Satisfaction: Why Choose AirGreen for Your HVAC Needs?
At AirGreen, we don’t just install HVAC systems; we ensure that each installation is done with the utmost attention to detail and customer satisfaction. Our team is experienced in handling complex installations and will work with you to find the best solutions for your specific needs. From consultation to post-installation support, we ensure you get the best out of your investment.
The installation of the Sharp ZU1 heat pump in Sainte-Thérèse is just one example of our commitment to quality. We look forward to helping more homeowners enjoy the benefits of modern heating and cooling solutions in Montreal, Laval, Longueuil, and the surrounding areas.
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).