Installation of a SHARP ZU1 Mini Split Heat Pump in Delson
See how AirGreen transformed a Delson home with the efficient, whisper-quiet SHARP ZU1 heat pump, built to withstand temperatures down to -27°C.
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 Cutting-Edge Installation to Beat Delson’s Tough Weather
At AirGreen, we take pride in bringing the latest HVAC technology to homes across Montreal, Laval, Longueuil, and the surrounding areas. One of our most recent and exciting projects took place in the charming town of Delson, where we installed a state-of-the-art SHARP ZU1 Mini Split Heat Pump. This advanced unit, boasting 18,000 BTU of cooling power and exceptional heating capabilities down to -27°C, is a perfect fit for both sizzling summer days and frigid Canadian winters. Here's how we transformed this space into a comfortable and energy-efficient environment.
The Heart of the Project: SHARP ZU1 Heat Pump
Our team installed the SHARP ZU1, a unit known not just for its impressive energy efficiency but also for its sleek and modern design. This heat pump has a 24.0 SEER rating, making it one of the most efficient models available today. Here’s what makes the SHARP ZU1 stand out:
- Whisper-Quiet Operation: The indoor unit operates at a super-quiet 25 dB(A) on its lowest setting, ensuring that the comfort it brings is never disrupted by unnecessary noise.
- Powerful Heating: Even at -27°C, the ZU1 delivers reliable warmth, perfect for our harsh winters.
- Energy Star® Certified: This machine is Energy Star® approved, meaning homeowners can keep energy bills low without sacrificing comfort.
Unique Backstory: The Challenge of Delson’s Climate
Delson is a beautiful community known for its vibrant summers and punishingly cold winters. Our client was facing the yearly struggle of keeping their home cool in the heat and warm in the dead of winter. This led us to the SHARP ZU1, which has been engineered to withstand extreme weather conditions, thanks to features like the R-32 refrigerant, which ensures efficient heat exchange even in sub-zero temperatures.
A Closer Look at the Installation Process
Our expert team started by assessing the best location for the indoor and outdoor units to optimize airflow and minimize noise. The indoor unit, with its dimensions of 41.42 x 9.80 x 12.44 inches, fits seamlessly into the home’s interior design, while the outdoor unit, measuring 33.47 x 13 x 27.94 inches, was installed securely to withstand harsh weather conditions.
Piping Details: We used high-quality pipes, measuring 1/4 - 3/8 inches, and ensured proper insulation to prevent energy loss and condensation issues.
Freon Type: The environmentally friendly R-32 refrigerant was a deliberate choice, not only for its superior performance but also for its lower environmental impact compared to older refrigerants.
Admissible for LogisVert’s Highest Grant!
One of the biggest wins for our client was that the SHARP ZU1 model qualifies for the highest LogisVert grant of $2,640, provided by Hydro-Québec for heat pumps in this category. This grant not only makes the installation more affordable but also highlights the model's top-tier energy efficiency.
Additional Features: Tech Meets Comfort
This installation is more than just functional; it’s smart. With integrated WiFi, the homeowner can control the unit from their smartphone, adjusting the temperature even when they're away from home. The system also boasts a 10-10-10 warranty: 10 years on the compressor, parts, and labor, offering peace of mind and long-term reliability.
The Science of Comfort: Plasmacluster Technology
SHARP's proprietary Plasmacluster technology sets this unit apart, purifying the air by releasing positive and negative ions that eliminate airborne bacteria, viruses, and allergens. This feature is a game-changer for homes where air quality is a top concern. It doesn’t just heat and cool; it cleans and enhances the air, making every breath healthier.
Why AirGreen?
Our installation in Delson reflects our commitment to superior workmanship and client satisfaction. At AirGreen, we’re not just HVAC specialists; we’re problem-solvers dedicated to making your home as comfortable and efficient as possible. Our team takes every detail into account, from the placement of units to the calibration of settings, ensuring you get the most out of your investment.
Client Testimonial: The homeowners were thrilled, not just with the product but also with our seamless and professional installation. "We can already feel the difference," they mentioned. "The house stays cool even on the hottest days, and we can’t wait to test it out this winter!"
Key Takeaways: What You Need to Know About the SHARP ZU1
- Cooling Capacity: 18,000 BTU
- Heating Efficiency: Reliable operation at -27°C
- Eco-Friendly Refrigerant: R-32, which reduces the environmental impact
- Sound Pressure Level: 25 dB(A) indoors, 52 dB(A) outdoors
- Extended Warranty: 10 years on compressor, parts, and labor
- Energy Efficiency: 24.0 SEER
Ready to Upgrade Your Comfort?
If you're considering an upgrade to your HVAC system, the SHARP ZU1 Mini Split Heat Pump might be the perfect fit. Contact us at AirGreen to learn more about this installation and see how we can help you make your home more comfortable and energy-efficient.
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.
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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).