Installation of a Sharp ZU1 Wall-Mounted Air Conditioner in Montreal
Discover the cutting-edge Sharp ZU1 heat pump we installed in Montreal, offering top-tier comfort, energy efficiency, and advanced air purification features. Find out why it's perfect for Quebec homes!
Take a tour of the installation
Each number is a point we check on site. Switch between summer and winter to watch air and heat move.
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 Sustainable Cooling Solution with the Sharp ZU1 Heat Pump
We recently completed a Sharp ZU1 18,000 BTU heat pump installation in Montreal, and the project stands out as a perfect example of cutting-edge HVAC technology combined with eco-friendly initiatives. At AirGreen, we pride ourselves on providing efficient, reliable, and environmentally conscious systems, and the Sharp ZU1 is a prime example of this commitment.
Why the Sharp ZU1 Heat Pump?
The Sharp ZU1 is not just any wall-mounted heat pump; it’s a complete climate solution, designed to deliver optimal heating and cooling even in Montreal's extreme weather conditions. This system offers 18,000 BTUs of cooling capacity and operates effectively in temperatures as low as -27°C, ensuring comfort year-round. With a cooling capacity perfect for hot summer days and powerful heating for Quebec’s notoriously cold winters, this model has quickly become a favorite among homeowners looking to upgrade their HVAC systems.
Some of the key features that make the Sharp ZU1 stand out include its use of R-32 refrigerant, which is more energy-efficient and environmentally friendly than older types of refrigerants. The installation is also eligible for significant grants, including the $2,640 LogisVert grant by Hydro-Québec, plus a 25% additional bonus if you sign up for Hilo Thermostats. That’s a huge incentive for those looking to save on their energy bills while investing in a future-proof system.
The Installation Process
Located on a rooftop in Montreal, this installation required a thoughtful approach due to the elevated placement of the outdoor unit. Our team expertly mounted the Sharp ZU1 exterior unit on a sturdy metal stand, secured with foam insulation blocks, ensuring both stability and efficient performance. The unit was neatly connected to the building's electrical and ventilation systems, ensuring seamless operation from day one.
Installing an 18,000 BTU system of this size requires precision. Our skilled technicians ensured that all connections were perfectly sealed, and the wiring was neatly organized to avoid any interference with the aesthetic and functional aspects of the system. From the insulated pipes to the weatherproof wiring, every element was carefully handled to provide the homeowner with a system built to last.
Superior Technology at the Heart of the Sharp ZU1
Plasmacluster Technology for Enhanced Air Purification
One of the standout features of the Sharp ZU1 is its Plasmacluster ion technology, which provides superior air purification. This technology is unique to Sharp and works by releasing positive and negative ions that eliminate airborne bacteria, viruses, and allergens. For homeowners, this means cleaner, healthier air circulating throughout their living spaces, making it a great option for those with allergies or respiratory concerns.
Coanda Airflow Control for Uniform Temperature
Another innovative feature is the Coanda airflow control mechanism, designed to distribute air evenly throughout the home. This technology prevents cold or warm air from blowing directly on occupants, making it far more comfortable to use for long periods. The long diffuser flap can direct air up to 15 meters and automatically adjusts based on whether the system is in heating or cooling mode. This ensures temperature uniformity, no matter where you are in your home.
Extreme Weather Performance: The Sharp ZU1 in Action
Montreal and the surrounding areas experience harsh winters, and that's where the Sharp ZU1 truly excels. With its ability to operate in temperatures as low as -27°C, this heat pump is designed for extreme cold weather performance. The system’s patented Hot Gas Pipe technology ensures that even when the temperature plummets, the unit continues to operate without freezing.
The unit’s defrosting system also kicks in when necessary, using hot gas to melt any ice buildup on the outdoor unit. This significantly reduces defrost times, helping maintain indoor warmth with minimal interruptions.
Energy Efficiency and Environmental Responsibility
The Sharp ZU1 uses R-32 refrigerant, which offers improved energy efficiency and a lower environmental impact compared to older refrigerants like R-22. This is a key feature in meeting new government energy efficiency standards that are set to roll out in 2025. Homeowners can rest easy knowing that their Sharp ZU1 installation is not only keeping them comfortable but also helping them reduce their carbon footprint.
In terms of energy efficiency, the Sharp ZU1 boasts a 24.0 SEER rating (Seasonal Energy Efficiency Ratio), making it one of the most efficient systems on the market. With its Energy Star Cold Climate certification, this heat pump is ideal for the extreme weather patterns experienced in Montreal and Quebec, ensuring homeowners save on both heating and cooling costs.
Smart Connectivity Features
In addition to its mechanical prowess, the Sharp ZU1 comes equipped with WiFi connectivity. This allows homeowners to control their heat pump remotely using a smartphone app, providing them with the ability to adjust settings, check energy consumption, and even receive alerts about room occupancy or temperature changes. This smart feature ensures optimal performance and energy savings by automatically adjusting based on usage patterns.
Why Choose AirGreen for Your Installation?
At AirGreen, we specialize in installing top-tier HVAC systems like the Sharp ZU1 across Montreal, Laval, Longueuil, and the North and South Shores. Our team of experienced professionals understands the nuances of the Quebec climate and works closely with homeowners to provide customized solutions tailored to their specific needs. From initial consultation to post-installation support, we ensure that each installation is done with precision, care, and an eye toward long-term performance.
Conclusion
The installation of the Sharp ZU1 18,000 BTU heat pump in Montreal is a perfect example of modern HVAC solutions that combine performance, energy efficiency, and environmental responsibility. With features like Plasmacluster air purification, Coanda airflow control, and extreme weather capabilities, the Sharp ZU1 is designed to deliver comfort, efficiency, and peace of mind for years to come.
Contact AirGreen today to learn more about how we can help you achieve the perfect climate control solution for your home!
The unit on this job, in figures
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.
The big day, step by step
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 would it look like 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.
Four mistakes we do not make
Flip each card to see what we do instead.
Your own project, step by step
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.
Is your home ready?
Check what applies at your place. A "no" is not a refusal: it is what we sort out during the estimate.
Four statements: true or false?
It all comes down to details you have just seen.
1. In heating mode, the outdoor unit can produce water.
During defrost cycles. That water must drain away without forming ice.
2. You pick the capacity with a simple square-footage rule.
Windows, insulation, orientation and how the room is used all count. Capacity is chosen on site.
3. A multi-zone connects several indoor heads to a single condenser.
One head per room, all on the same condenser. Each room keeps its own temperature.
4. The disconnect can sit behind the patio furniture.
It must stay accessible: it is what shuts the unit off for service.
0 / 4 right answers
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.
More jobs to see, near you
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Each dot: a town where AirGreen has published projects. The glowing dot: this job.
Every house has its constraints. We see them before we install.
The on-site estimate is free and the quote follows within 24 hours.
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).