Installation of a SHARP ZU1 Mini Split Heat Pump in Lachine
Discover how AirGreen installed a cutting-edge SHARP ZU1 Heat Pump in Lachine, bringing unparalleled comfort, energy efficiency, and cleaner air to a happy homeowner.
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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
Experience Superior Comfort with Cutting-Edge Technology in Your Home
At AirGreen, we take pride in bringing innovation, comfort, and energy efficiency to our customers across Montréal, Laval, Longueuil, North Shore, and South Shore. Our recent project in Lachine is a perfect example of how we deliver value through advanced HVAC solutions tailored to our customers' needs. Let us take you through the installation of the SHARP ZU1 18,000 BTU Mini Split Heat Pump, a system that is as powerful as it is energy efficient.
Project Overview: Bringing Comfort to Lachine
The homeowner in Lachine was searching for a high-performing HVAC system that could handle Québec's intense winters while remaining eco-friendly and efficient. After consulting with us, they chose the SHARP ZU1 18,000 BTU Wall-Mounted Heat Pump—a decision guided by its unmatched performance, sleek design, and energy-saving features.
Why Choose the SHARP ZU1 Mini Split Heat Pump?
Designed for Extreme Weather Conditions
The SHARP ZU1 is specifically engineered to operate seamlessly in temperatures as low as -27°C, ensuring reliable heating during even the harshest Québec winters. In summer, it switches effortlessly to cooling mode, providing optimal comfort year-round.
Unparalleled Energy Efficiency
With a remarkable 24.0 SEER rating, this unit delivers exceptional energy savings, helping homeowners reduce electricity bills without compromising performance. Moreover, the use of the R-32 refrigerant makes it an environmentally responsible choice by significantly lowering greenhouse gas emissions.
Maximum Comfort, Minimum Noise
The SHARP ZU1 is designed for quiet operation, with an interior sound pressure level as low as 25 dB(A)—perfect for maintaining a peaceful indoor environment. Even the exterior unit operates at a mere 52 dB(A), ensuring minimal disturbance to neighbors.
Eligible for the Highest LogisVert Grant
The SHARP ZU1 qualifies for a $2,640 LogisVert Grant from Hydro-Québec, making it one of the most financially attractive options in the 18,000 BTU category.
The Installation: A Seamless Integration
Our team meticulously planned and executed the installation, ensuring that every detail was addressed to perfection. Here’s how we brought this project to life:
Step 1: Site Assessment
We began by conducting a thorough site assessment to determine the ideal location for both the indoor and outdoor units. In this case, the wall-mounted interior unit was strategically placed to optimize airflow throughout the home, while the outdoor unit was securely mounted on the exterior wall to save space and improve efficiency.
Step 2: Professional Installation
Our certified technicians installed the system using durable materials, including high-quality piping and electrical wiring. The system's 1/4 - 3/8 piping ensures efficient refrigerant flow, while the 220V voltage guarantees stable power supply for consistent performance.
Step 3: Attention to Detail
To enhance the unit's durability, we applied an anticorrosive coating to the outdoor compressor, protecting it from Québec’s harsh winters. Additionally, we ensured optimal drainage with multiple drainage holes in the condensate pan, preventing water buildup and freezing.
Innovative Features of the SHARP ZU1
Plasmacluster Technology for Healthier Air
The SHARP ZU1 doesn’t just regulate temperature; it also purifies the air. Its Plasmacluster technology neutralizes airborne bacteria, viruses, and allergens, creating a cleaner and healthier living environment.
Coanda Airflow Control
Thanks to the Coanda airflow mechanism, the SHARP ZU1 directs air along walls and ceilings, ensuring uniform heating and cooling without uncomfortable drafts.
Wi-Fi Connectivity
Control your heat pump from anywhere using the SHARP app. Adjust temperature settings, monitor energy usage, and even receive real-time alerts—all from your smartphone.
Self-Cleaning Mode
To maintain peak performance, the SHARP ZU1 features a self-cleaning function that prevents mold and odor buildup within the unit, extending its lifespan.
Customer Feedback: A Satisfied Homeowner in Lachine
The homeowner was thrilled with their new SHARP ZU1 heat pump. They praised its whisper-quiet operation, noticeable energy savings, and the comfort it provided during both warm and cold seasons. They were especially delighted to learn about the 10-10-10 warranty (10 years on the compressor, parts, and labor), offering peace of mind for years to come.
Why Choose AirGreen for Your HVAC Needs?
Expertise You Can Trust
With years of experience in HVAC installation, AirGreen is committed to delivering top-notch service and innovative solutions tailored to your needs.
Comprehensive Support
From helping you choose the right system to securing grants like the LogisVert program, we ensure a hassle-free experience from start to finish.
Unmatched Quality
Our partnerships with industry-leading brands like SHARP allow us to offer cutting-edge technology that combines performance, efficiency, and reliability.
Transform Your Home with AirGreen
Whether you’re looking to upgrade your heating system or install a new air conditioner, AirGreen is your go-to partner in Montréal, Laval, Longueuil, North Shore, and South Shore. Contact us today to learn how we can enhance your home’s comfort and energy efficiency.
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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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).