Installation of a Sharp ZU1 Wall-Mounted Heat Pump in Montréal-Nord
Discover how the Sharp ZU1 heat pump transforms comfort with whisper-quiet operation, superior air purification, and energy savings—even at -27°C. Eligible for a $2,640 grant in Québec!
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.
A Cutting-Edge Heat Pump in the Heart of Montréal-Nord
At AirGreen, we take pride in every HVAC project we complete across Montréal, Laval, Longueuil, Rive-Nord, and Rive-Sud. Recently, we had the pleasure of installing the exceptional Sharp ZU1 18,000 BTU Wall-Mounted Heat Pump in a beautiful residential home located in Montréal-Nord. This high-performance mini split heat pump is a game-changer, not just because of its outstanding capabilities but also due to the incredible $2,640 LogisVert Grant—the highest grant given to any 18,000 BTU machine in Québec!
Why the Sharp ZU1 Was the Perfect Choice for This Installation
When we met with the homeowner in Montréal-Nord, they expressed a need for consistent heating and cooling throughout their living space, especially given Québec’s intense winters. They were looking for a machine that could:
- Heat efficiently in temperatures as low as -27°C
- Deliver reliable cooling with a capacity of 18,000 BTU
- Provide energy efficiency to reduce long-term electricity costs
- Improve indoor air quality
- Integrate modern technologies like WiFi connectivity
The Sharp ZU1 perfectly fit the bill. Known for its superior efficiency (24.0 SEER) and advanced features, this model represents the pinnacle of HVAC innovation.
A Smooth Installation Process
Our expert AirGreen team arrived on-site with a clear plan to ensure the installation was seamless and efficient. Given the homeowner's specific needs, we mounted the Sharp ZU1 outdoor unit under the balcony structure, ensuring it was well-protected while maximizing accessibility. The sleek interior unit—with dimensions of 41.42 x 9.80 x 12.44 inches—was placed strategically inside the home to optimize airflow and comfort.
The connections, pipes, and electrical setup were handled with precision:
- Piping dimensions: 1/4 - 3/8 inch lines
- Voltage: 220V for optimal operation
- Sound Pressure Level: Whisper-quiet at 25 dB(A) indoors and 52 dB(A) outdoors
The customer was thrilled with how quickly the system came together and appreciated our attention to detail throughout the process.
Standout Features of the Sharp ZU1 Heat Pump
Plasmacluster Technology for Cleaner Air
Unlike other mini splits, the Sharp ZU1 features Plasmacluster Technology—a state-of-the-art air purification system that:
- Eliminates airborne bacteria and viruses
- Removes mold and allergens
- Neutralizes odors (like tobacco and pets)
- Promotes a healthier indoor environment
This was a critical selling point for our client, who wanted to enhance their family’s health and well-being.
The Coanda Effect for Superior Airflow
The Coanda airflow control directs warm or cool air along walls and ceilings to ensure even temperature distribution without creating uncomfortable drafts. Whether you’re heating or cooling, this technology guarantees that every corner of your home remains comfortable.
Top Efficiency and Environmental Responsibility
The Sharp ZU1 uses the new R-32 refrigerant, which significantly reduces its environmental impact while enhancing energy efficiency. Compared to older refrigerants, R-32 offers:
- 10% lower energy consumption
- A much lower Global Warming Potential (GWP)
- Compliance with future government standards for 2025
Homeowners in Québec can rest assured that this heat pump aligns with both environmental regulations and long-term cost savings.
Why Choose AirGreen for Your HVAC Installation?
At AirGreen, we don’t just install machines—we deliver comfort, energy efficiency, and peace of mind. From the moment we stepped into our Montréal-Nord client’s home, our goal was to ensure they received:
- Top-Quality Products: The Sharp ZU1 is the very best in its class, as featured in our 2025 Guide to Wall-Mounted Heat Pumps.
- Expert Installation: Our team’s knowledge and craftsmanship ensure flawless performance for years to come.
- Access to Government Grants: With a combined $2,640 provincial grant and federal options of up to $5,000, our clients maximize their savings.
Heating and Cooling: Built for Québec Winters
The Sharp ZU1 offers unmatched heating performance, even in the coldest conditions. With a heating capacity down to -27°C, it ensures consistent warmth during Québec’s harsh winters. Features like hot gas pipe technology and rapid defrosting keep the system operating smoothly, preventing freezing or water pooling in the outdoor unit.
Connectivity and Control for Modern Living
The WiFi connectivity included with the Sharp ZU1 adds a new level of convenience. Using the smartphone app, homeowners can:
- Adjust temperature and fan settings remotely
- Monitor real-time energy usage
- Receive notifications based on motion detection
- Automate system controls using GPS features
This modern integration makes it easy to optimize comfort while saving energy.
Customer Testimonial
"We are so happy with the installation from AirGreen. The team was professional, efficient, and incredibly knowledgeable. The Sharp ZU1 heat pump is quiet, powerful, and perfect for our family. The grants made it an even better deal!" — Montréal-Nord Homeowner
Sharp ZU1: The Best Choice for Wall-Mounted Heat Pumps
At AirGreen, we proudly stand by the Sharp ZU1 as the very best wall-mounted heat pump available. Its blend of efficiency, air quality technology, and innovative design makes it the ideal solution for homeowners in Montréal and across Québec.
Key Specifications Recap:
- Cooling Capacity: 18,000 BTU
- Heating Capacity: -27°C
- Efficiency: 24.0 SEER
- Sound Levels: 25/49 dB(A) indoors, 52 dB(A) outdoors
- Refrigerant: R-32
- Warranty: 10 years (compressor, parts, and labor)
Ready to Experience the Sharp ZU1 Difference?
If you’re considering a wall-mounted heat pump in Montréal, Laval, Longueuil, Rive-Nord, or Rive-Sud, look no further than AirGreen. With our expertise, you’ll enjoy unmatched comfort, efficiency, and savings. Contact us today to schedule your installation and take advantage of the incredible $2,640 LogisVert Grant!
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.
Which type of equipment for your project?
Pick what looks like your need.
Four mistakes we do not make
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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).