Installation of a Sharp ZU1 Wall-Mounted Heat Pump in Saint-Constant
Experience ultimate comfort with the Sharp ZU1 wall-mounted heat pump in Saint-Constant—energy-efficient, eco-friendly, and backed by the highest LogisVert grant 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.
Enhancing Comfort and Efficiency in a Saint-Constant Home with the 18,000 BTU Sharp ZU1
At AirGreen, we pride ourselves on delivering top-tier HVAC solutions tailored to our customers’ needs across Montréal, Laval, Longueuil, Rive Nord, and Rive Sud. Recently, we had the pleasure of completing a seamless installation of a Sharp ZU1 18,000 BTU wall-mounted heat pump in Saint-Constant. This state-of-the-art mini split combines remarkable energy efficiency, advanced air purification technologies, and a robust design ideal for our Quebec winters, heating efficiently even at temperatures as low as -27°C.
A Smooth HVAC Solution for a Family in Saint-Constant
The project was initiated when a homeowner in Saint-Constant reached out to us seeking a reliable, efficient, and eco-friendly HVAC solution for their property. With the ever-changing Quebec climate, they needed a system that could both cool their home during the summer heatwaves and heat efficiently throughout harsh winters. After carefully assessing their home’s size and needs, our team recommended the Sharp ZU1 heat pump. Given its impressive 24.0 SEER efficiency rating, Plasmacluster technology, and its ability to qualify for the highest grant in Quebec—a staggering $2,640 LogisVert Grant by Hydro-Québec—it was the perfect match.
Why the Sharp ZU1 Is the Best Choice for Quebec Homes
Cutting-Edge R-32 Refrigerant for Efficiency and Sustainability
One standout feature of the Sharp ZU1 is its use of R-32 refrigerant. Unlike conventional refrigerants, R-32 is more eco-friendly, reducing greenhouse gas emissions and improving energy efficiency by up to 10%. With Quebec transitioning to stricter energy regulations by 2025, the ZU1 is already ahead of the curve.
Plasmacluster Technology: Air Purification at Its Finest
Sharp's patented Plasmacluster technology is another game-changer. This unique feature replicates natural air purification by diffusing ions into the air, neutralizing airborne viruses, allergens, mold, and odors. The Saint-Constant homeowners particularly appreciated this as it ensures cleaner, healthier indoor air—a significant advantage for families with allergies or respiratory concerns.
Key Benefits of Plasmacluster:
- Eliminates airborne viruses and bacteria.
- Fights odors, mold, and tobacco residue.
- Reduces allergens for cleaner indoor air.
Coanda Airflow for Ultimate Comfort
With Sharp's innovative Coanda airflow control, the ZU1 provides precise air distribution to ensure a uniform and comfortable temperature. Instead of blasting air directly on the occupants, the system gently guides airflow along walls and ceilings, achieving a natural and even temperature balance throughout the home.
Highlights of the Coanda Effect:
- Prevents uncomfortable drafts.
- Enhances temperature harmony across multiple rooms.
- Directs airflow strategically for heating and cooling.
A Focus on Durability and Reliability
At AirGreen, we understand that HVAC systems must endure Quebec's extreme weather conditions. The Sharp ZU1 excels in this area with features designed for durability and reliable performance:
- Heating at -27°C: Thanks to Sharp's patented Hot Gas Pipe technology, the ZU1 operates seamlessly even in extreme cold.
- Anticorrosive Coating: Protects the outdoor compressor from harsh weather elements.
- Quick Defrost Function: Reduces defrost time by 60%, ensuring uninterrupted indoor comfort.
The multiple drainage holes on the outdoor unit also prevent ice buildup, a common issue during Quebec's freezing winters. This attention to detail ensures longevity and reduces maintenance costs.
Installation Details: Precision and Care
During the Saint-Constant installation, our certified technicians ensured everything was executed to perfection. The exterior Sharp ZU1 compressor, with dimensions 33.47 x 13 x 27.94 inches, was mounted securely on a custom bracket to provide stability and protect the unit from snow and debris. The indoor head, sleek and modern with dimensions 41.42 x 9.80 x 12.44 inches, was strategically positioned for optimal airflow distribution.
Technical Highlights:
- Cooling Capacity: 18,000 BTU
- Heating Capacity: Efficient operation down to -27°C
- Sound Levels: Whisper-quiet operation at 25 dB(A) indoors and 52 dB(A) outdoors.
- WiFi Connectivity: Seamless control via smartphone, providing real-time adjustments and energy monitoring.
Eligible for Exceptional Grants
One of the most compelling benefits of installing the Sharp ZU1 is its eligibility for significant grants:
- Hydro-Québec LogisVert Grant: $2,640 (the highest for an 18,000 BTU machine in Quebec!).
- Federal Greener Homes Grant: Up to $5,000. These grants make the Sharp ZU1 not only a smart investment for comfort but also an economically savvy choice for homeowners.
A Modern Solution for Year-Round Comfort
The Sharp ZU1 is designed with modern technology to adapt to the needs of today’s homeowners. Its features include:
- Energy Star® Certification: Ensures high energy efficiency and performance.
- Multi-Space Function: Balances temperatures across multiple rooms with ease.
- Self-Cleaning Mode: Prevents mold and extends the system’s lifespan.
- Winter Cool Mode: Provides cooling even during cooler seasons, down to -10°C.
- Auto Restart: Ensures seamless operation after power outages.
With its motion sensors, the Sharp ZU1 optimizes energy use by detecting activity and adjusting performance accordingly. Its smart connectivity also allows homeowners to control settings remotely, monitor energy consumption, and receive real-time temperature updates.
Sharp ZU1: The Best Heat Pump in Our 2025 Wall-Mounted Heat Pump Guide
The Sharp ZU1 has earned its place as the best heat pump in our 2025 Guide to Wall-Mounted Heat Pumps. Combining innovation, efficiency, and superior comfort, it sets the gold standard for HVAC systems in Quebec. (You can click on the guide link for more details!)
Why Choose AirGreen for Your HVAC Needs?
At AirGreen, we go above and beyond to provide exceptional HVAC solutions across Montréal, Laval, Longueuil, Rive Nord, and Rive Sud. From the initial consultation to the final installation, our team ensures every project meets the highest standards of quality and customer satisfaction.
If you're looking for the best heat pump solution for your home, the Sharp ZU1 18,000 BTU wall-mounted heat pump is the perfect choice. With its cutting-edge features, exceptional energy efficiency, and eligibility for substantial grants, it’s an investment that delivers unmatched comfort and savings.
Contact Us Today!
Ready to enhance your home’s comfort with a Sharp ZU1 heat pump? Contact AirGreen today for a free consultation and join the countless satisfied homeowners across Greater Montreal who trust us for their HVAC needs.
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).