Wall-Mounted Sharp ZU1 18000 BTU Heat Pump: Professional Installation in Sainte-Dorothée (Laval)
Discover the installation of a Sharp ZU1 18000 BTU wall-mounted heat pump in Sainte-Dorothée, Laval. The ideal solution for year-round comfort, even at -27°C, with air purification, Wi-Fi connectivity, and available grants. Done by AirGreen.
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.
An installation designed for comfort, performance, and energy efficiency—even in extreme cold
At AirGreen, we recently had the pleasure of completing the installation of a wall-mounted Sharp ZU1 18000 BTU heat pump in a bright, modern home located in Sainte-Dorothée, Laval. This project perfectly illustrates our approach: meticulous service, tailored to the customer’s needs, with a high-performance, eco-friendly unit built to handle the challenges of Québec’s climate, especially on the North Shore.
A living room with sloped ceilings and large windows: a challenge met with precision
The environment of this installation was far from ordinary: the home’s main living space features cathedral ceilings and large southwest-facing windows, creating significant solar gain in the summer and heat loss in the winter. The choice of the Sharp ZU1 18000 BTU heat pump, paired with a thoughtfully elevated installation, enables even air distribution and precise temperature control throughout the space.
We installed the indoor unit on the highest wall, in a strategic position that maximizes the Coanda effect (a natural phenomenon used to guide airflow along surfaces), avoiding direct airflow while optimizing thermal comfort in the main living area.
Sharp ZU1: advanced technology serving your comfort
The Sharp ZU1 wall-mounted heat pump is not your typical wall unit. It includes several cutting-edge features that place it among the best options on the market for demanding climates like ours in Québec.
Technical specifications of the Sharp ZU1 18000 BTU:
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Heating capacity: up to 25,600 BTU/h, with reliable performance down to -27°C.
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SEER (cooling seasonal efficiency ratio): 24
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HSPF (heating seasonal performance factor): up to 13 / 11 (Zone IV/V)
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Refrigerant: R-32, more eco-friendly than R-410A, with a lower global warming potential (GWP).
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Plasmacluster technology: neutralizes airborne viruses, bacteria, mold, and allergens.
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Triple filtration system: washable pre-filter, antimicrobial HEPA filter, and activated carbon deodorizing filter.
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Sleek, discreet design with wide, quiet airflow (as low as 25 dB in silent mode).
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Built-in Wi-Fi connectivity for smart control via mobile phone.
Year-round comfort, even at -27°C
The standout benefit of this Sharp wall-mounted heat pump is its ability to deliver consistent and reliable heating performance, even when outdoor temperatures drop well below -20°C. This makes it perfect for winters in Laval, where harsh cold is the norm.
Thanks to its patented Hot Gas Pipe system, the unit is designed to drain condensation efficiently, preventing freezing in the outdoor unit and maintaining consistent performance, even during defrost cycles.
A clean, fast, and personalized installation
The Sainte-Dorothée installation was completed in a single day, with no disruption to the homeowners’ routine. Access to the outdoor unit was planned according to the balcony layout, and drainage was optimized for cold climate operation. We also ensured a properly sealed wall penetration and protection against air infiltration.
Indoors, the unit was mounted on a load-bearing drywall with anti-vibration supports for ultra-quiet operation. The refrigerant line was discreetly concealed to match the room’s clean and minimalist aesthetic.
A unit eligible for Québec’s heat pump grants
Great news for our customers in Sainte-Dorothée, Laval, Montréal, Longueuil, the South Shore and the North Shore: the Sharp ZU1 wall-mounted heat pump is eligible for several government rebate programs, including:
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Hydro-Québec’s LogisVert Program
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Rénoclimat
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Chauffez Vert
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And other local municipal grants
Our experts at AirGreen will verify your project’s eligibility and guide you through the application process, free of charge.
Why choose AirGreen for your wall-mounted heat pump installation?
At AirGreen, we don’t just install machines. We consult, assess, install, and provide tailored follow-up. Every home is unique, and so is every installation. Here’s what sets us apart:
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Certified and experienced technicians
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Expertise with complex installations (angled walls, high ceilings, multi-zone configurations)
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Full support with grants and incentives
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Trusted products from brands like Sharp, Gree, Fujitsu, Bosch, and more
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Friendly, responsive, local after-sales service
Maintenance tips for your Sharp ZU1
To ensure your heat pump continues running efficiently, we recommend the following maintenance tips to all our clients:
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Clean the pre-filter every 3 to 4 weeks
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Have the outdoor unit inspected in spring and fall
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Book a professional annual maintenance check with AirGreen
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Regularly activate the Plasmacluster mode to purify indoor air
Final result: comfort, energy savings, and peace of mind
Our client in Sainte-Dorothée was thrilled with the outcome: a more comfortable home, cleaner air, and an expected reduction in winter electricity bills. This type of project perfectly reflects our commitment to HVAC excellence in the residential sectors of Greater Montréal.
We thank our client for their trust and are proud to have contributed to their comfort and well-being.
Thinking of getting a wall-mounted heat pump?
Whether you live in Laval, Montréal, Longueuil, the South Shore or the North Shore, we’d be happy to assist you with your Sharp ZU1 wall-mounted heat pump installation or help you find another high-performance model. Contact us today for a free, personalized evaluation.
How it goes, from the first call to the end
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 the unit delivers when it is cold
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.
And 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.
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.
Which type of equipment for your project?
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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).