Installation of a SHARP ZU1 Ductless Mini Split Heat Pump in Hochelaga-Maisonneuve
See how AirGreen's expert installation of a SHARP ZU1 heat pump in Hochelaga-Maisonneuve delivers unbeatable comfort and efficiency, even in -27°C weather.
- City
- Region
- Equipment
- Brand
- Challenges
- Published
The job on one screen
The unit’s data sheet
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 article, chapter by chapter
A Reliable Solution for Montréal's Climate Extremes
We at AirGreen are thrilled to share a recent installation that exemplifies our dedication to bringing comfort and efficiency to the homes of Montréal. In the heart of Hochelaga-Maisonneuve, we installed a SHARP ZU1 Mini Split Heat Pump, designed not only to handle the city’s frigid winters but also to keep homes cool during those humid summer days. Let's dive into the story behind this project and the impressive features of the SHARP ZU1.
A Customer with Unique Needs
Our client, a long-time resident of Hochelaga-Maisonneuve, faced a common challenge: finding a heating and cooling system that could handle the fluctuating extremes of Montréal’s weather. With temperatures plummeting to -27°C in the winter and climbing during summer heatwaves, the customer needed a robust solution that wouldn’t drain their energy budget. After a thorough consultation, we recommended the 18,000 BTU SHARP ZU1 Mini Split Heat Pump, an efficient, compact unit with an impressive track record.
Why the SHARP ZU1?
The SHARP ZU1 Mini Split Heat Pump isn't just any machine. It's a masterpiece of modern HVAC engineering, built for performance and sustainability.
- Cooling and Heating Efficiency: With a cooling capacity of 18,000 BTU and the ability to provide warmth even when the mercury drops to -27°C, this unit is built for harsh climates. Its 24.0 SEER efficiency rating ensures energy savings throughout the year, making it an environmentally friendly and cost-effective choice.
- Advanced Air Purification: The Plasmacluster Technology incorporated into the unit releases ions that neutralize bacteria, viruses, and allergens. This means cleaner, healthier air, perfect for homes with children, pets, or anyone with respiratory concerns.
- Smart Home Compatibility: With built-in Wi-Fi, the SHARP ZU1 can be controlled via smartphone, ensuring optimal comfort even when you're on the go. The AHRI certification and Energy Star® rating further emphasize the model’s efficiency and reliability.
Installation Highlights
Our team worked efficiently to complete this installation, ensuring minimal disruption to the homeowner’s daily life. Here's what made this installation unique:
- Perfect Placement: Positioning the indoor unit at an optimal height for even airflow was crucial. Measuring 41.42 inches in width, 9.80 inches in depth, and 12.44 inches in height, the SHARP ZU1 fits seamlessly into the living room, complementing the interior decor.
- Outdoor Challenges: Montréal winters can be unforgiving, so we secured the outdoor unit, measuring 33.47 inches by 13 inches by 27.94 inches, on a sturdy, insulated platform. This ensures that even at temperatures as low as -27°C, the unit operates without issues.
- Efficient Piping and Voltage Management: Using high-quality piping (1/4 - 3/8 inch) and connecting the system to a 220V power source, we ensured optimal performance and longevity.
The SHARP ZU1’s Standout Features
Our client was particularly excited about several standout features:
- Quiet Operation: With an indoor sound pressure level ranging from 25 to 49 dB(A), the SHARP ZU1 is whisper-quiet, perfect for maintaining peace in a busy household.
- Extended Warranty: We provided an extended 10-10-10 warranty, covering the compressor, parts, and labor for a full decade. This gives homeowners peace of mind and underscores the quality of SHARP’s craftsmanship.
- Eco-Friendly Refrigerant: Using R-32 refrigerant, which has a lower global warming potential compared to traditional refrigerants, the SHARP ZU1 supports a greener planet.
Eligible for Significant Grants
One of the biggest highlights of this installation is that the SHARP ZU1 is eligible for the highest LogisVert grant from Hydro-Québec in the 18,000 BTU category—$2,640. This grant makes upgrading to a high-efficiency heat pump not just a smart environmental decision but also a financially attractive one. Our team assisted the client with all the necessary paperwork, ensuring a seamless application process.
More Than Just Comfort: A Healthier Home
While the primary goal was to achieve efficient climate control, our client was also keen on improving indoor air quality. The Plasmacluster Technology in the SHARP ZU1 makes this possible by eliminating odors, suppressing mold growth, and neutralizing airborne viruses. This advanced purification system creates a healthier, fresher living environment year-round.
What Makes Us Stand Out?
At AirGreen, we believe every installation is an opportunity to improve lives and reduce our community’s carbon footprint. Here's why our customers keep choosing us:
- Expert Knowledge: We don’t just install heat pumps; we educate our clients on how to maximize their investment. We explained how the SHARP ZU1’s Coanda Airflow ensures even temperature distribution, eliminating hot or cold spots in the home.
- Comprehensive Service: From the initial consultation to post-installation support, we handle everything. We even helped the client schedule regular maintenance to keep their new SHARP ZU1 in peak condition.
- Community Focus: Our work extends beyond just technical expertise; it's about creating a sustainable, comfortable future for Montréal residents.
The Future of Home Comfort in Hochelaga-Maisonneuve
This installation showcases how cutting-edge technology can transform living spaces. As we left the site, the homeowner was thrilled, feeling confident about their home's newfound efficiency and indoor air quality. We look forward to many more installations like this one, making Montréal a more comfortable and sustainable place, one home at a time.
The job tools
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.
How the job unfolds
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 we check on a job like this one
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.
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.
Good habits, once the unit is in place
Six simple habits that keep the unit going. Your list stays on this device.
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.
The right pages, at the right time
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
By town, by equipment or by region: browse more than 4,700 published projects.
Each dot: a town where AirGreen has published projects. The glowing dot: this job.
An on-site estimate, the right capacity, the right equipment.
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).