Installation of a Sharp ZU1 Wall-Mounted Heat Pump in Sainte-Thérèse
See how AirGreen installed the Sharp ZU1 24,000 BTU heat pump in Sainte-Thérèse, offering superior air purification and energy savings. Discover why it’s perfect for Quebec's extreme winters!
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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 High-Efficiency Solution for Extreme Weather: Why This Sharp ZU1 24,000 BTU Mini Split is a Game Changer
When it comes to HVAC systems, we understand that our customers seek not only comfort but also reliability and efficiency, especially during the harsh Quebec winters. That’s why we’re particularly excited about a recent installation in Sainte-Thérèse, where we equipped a home with the Sharp ZU1 24,000 BTU wall-mounted heat pump, a machine designed to excel in extreme temperatures.
Why Sainte-Thérèse Needed This System
This project was special, not just because of the cutting-edge technology we were able to provide, but because it perfectly addressed the client’s need for reliable heating and cooling in a region that experiences both scorching summers and freezing winters. In this case, the homeowner had been relying on an old system that simply couldn’t handle the load anymore, especially during the -27°C cold spells that Sainte-Thérèse is known for.
They wanted something that could maintain a comfortable temperature in their home year-round while also being energy-efficient. After discussing various options, the Sharp ZU1 model emerged as the clear winner. Here's why:
The Sharp ZU1: Engineered for Quebec's Harsh Winters
The Sharp ZU1 24,000 BTU mini split heat pump is built to perform in extreme temperatures. This particular unit is capable of heating effectively even when outdoor temperatures drop to -27°C. For the homeowner, this means no more waking up to a freezing house or worrying about the heating system failing during the coldest days of winter.
Moreover, the Sharp ZU1 has an efficiency rating of 22.0 SEER. This makes it not only powerful but also economical, reducing energy consumption and keeping monthly bills in check. The ability to cool the home during summer with the same level of efficiency is an added bonus that the client found incredibly appealing.
Top Features of the Sharp ZU1 Model
1. Advanced Plasmacluster Technology
One of the standout features of this installation is the Plasmacluster technology, exclusive to Sharp products. This technology purifies the air by removing airborne bacteria, viruses, and mold. For the homeowner, this means cleaner air, reduced allergens, and a healthier living environment.
2. Coanda Airflow Control
The Sharp ZU1’s Coanda airflow control ensures uniform temperature distribution throughout the home, preventing cold spots and drafts. The long diffuser flap directs air up to 15 meters, ensuring that every corner of the room benefits from the desired temperature without the discomfort of direct airflow.
3. Energy Efficiency
The new R-32 refrigerant used in the Sharp ZU1 is not only more efficient but also environmentally friendly, with a 10% reduction in electrical consumption compared to older models. This refrigerant has a much lower global warming potential, making it a greener option for environmentally-conscious homeowners.
4. Whisper-Quiet Operation
For many, noise is a major concern when installing a heat pump. The Sharp ZU1 delivers whisper-quiet operation, with an interior sound pressure level as low as 25 dB(A)—quieter than a typical conversation. This means the homeowner can enjoy the comfort of their heating or cooling system without being disturbed by loud operational sounds.
LogisVert Grant: A Financial Win for the Homeowner
One of the key benefits for the homeowner was that the Sharp ZU1 model qualifies for the $2,688 LogisVert Grant by Hydro-Québec, the highest amount offered for a 24,000 BTU mini split. This grant significantly reduced the overall cost of the installation, making it an even more attractive option. In fact, this financial incentive was one of the main reasons the homeowner chose this model, as it provided both immediate and long-term savings.
Installation Details: Precision and Expertise
At AirGreen, we pride ourselves on delivering seamless installations, and this project in Sainte-Thérèse was no exception. The unit was installed with precision to ensure optimal performance. The indoor unit (Serial Number: AY-XP24ZU1) and outdoor unit (Serial Number: AE-X24ZU1) were carefully positioned to maximize efficiency and airflow.
We also ensured that all piping and wiring were neatly arranged and securely fastened. The system operates on a 220V voltage, and we made sure all connections were safely installed and compliant with local regulations.
Customer Satisfaction: A Heat Pump Built to Last
The homeowner was particularly impressed by the 10-10-10 warranty that comes with the Sharp ZU1. This means they have 10 years of coverage on the compressor, parts, and labor, offering peace of mind and security in their investment.
Not only did this installation meet the customer’s heating and cooling needs, but it also addressed their concerns about energy efficiency, environmental impact, and indoor air quality. The Plasmacluster technology ensures that the air they breathe is as clean as it is comfortable, while the Coanda airflow system guarantees that every room in the house enjoys the same level of comfort.
Conclusion: A Cutting-Edge Solution for Year-Round Comfort
This installation of the Sharp ZU1 24,000 BTU mini split heat pump in Sainte-Thérèse is a testament to AirGreen’s commitment to quality and customer satisfaction. The homeowner now enjoys a state-of-the-art system that provides both comfort and efficiency, even in the most extreme weather conditions.
If you're in the Greater Montreal area—including Laval, Longueuil, the North Shore, and the South Shore—and are considering upgrading your HVAC system, the Sharp ZU1 is a fantastic option that delivers on all fronts. Contact AirGreen today to learn more about this cutting-edge technology and find out how you can benefit from the LogisVert Grant!
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.
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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).