Installation of a SHARP ZU1 18000 BTU Wall-Mounted Heat Pump in the Ahuntsic-Cartierville Borough of Montréal
Professional installation of a SHARP ZU1 18000 BTU wall-mounted heat pump in Ahuntsic-Cartierville, combining -27°C performance, Plasmacluster purification, energy savings, and LogisVert rebate. The perfect solution for Montréal homes.
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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
Optimized performance for Québec winters in a tight urban space
In the vibrant Ahuntsic-Cartierville neighbourhood, in the heart of Montréal, we recently completed the installation of a SHARP ZU1 18000 BTU wall-mounted heat pump, a perfect solution for year-round heating and cooling needs in urban homes. This project highlights the rigorous and personalized approach we take at AirGreen for all our HVAC residential installations.
Why choose the SHARP ZU1 18000 BTU model?
The SHARP ZU1 is known for its energy efficiency, resilience in northern climates, and integrated Plasmacluster technology. This model, powered by the eco-friendly R-32 refrigerant, not only helps to reduce the home’s carbon footprint, but also delivers excellent performance in all seasons.
Key technical specifications:
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Heating capacity: up to 21,800 BTU/h
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Cooling capacity: 18,000 BTU/h
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Energy efficiency: SEER of 24 and HSPF up to 13
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Heating operating range: down to -27 °C
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Plasmacluster technology: purifies indoor air by eliminating mold, viruses, and allergens
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Refrigerant: R-32 (environmentally responsible)
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AHRI & ENERGY STAR certified
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Eligible for grants such as the Hydro-Québec LogisVert program
A space-constrained installation handled with precision
This unit was installed in a service area under a balcony, a common setup in Montréal homes where maximizing space is key. We used a raised galvanized aluminum stand to support the outdoor unit, ensuring optimal airflow while protecting the unit from moisture and snow accumulation.
Installation details:
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Secured on concrete slab for stability and durability
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Tight, insulated refrigerant line routing with reinforced insulation
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Discreet integration of the electrical box for safe power connection
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Optimal unit placement to avoid direct exposure to exhaust air or runoff
Indoor comfort, air purification, and energy savings
SHARP’s exclusive Plasmacluster technology works continuously to purify the air, neutralizing bacteria, viruses, and mold. This ion system recreates the natural conditions of fresh air while ensuring a healthier environment for the whole family.
In addition, thanks to the smart modulation of the high-performance inverter compressor, the indoor temperature remains consistent without sudden energy spikes, which translates into significant savings on electricity bills.
Client testimonial: performance and peace of mind
The homeowner told us that during last winter, despite temperatures dropping to -20 °C, the SHARP ZU1 continued to heat the house efficiently without triggering the auxiliary system. The quiet operation of the indoor unit was also highly appreciated, especially at night.
"I’m impressed by the consistent temperature and the air quality since the installation. You can literally feel the difference. And absolutely no disturbing noise!"
The AirGreen expertise: more than just an installation
At AirGreen, every HVAC installation project starts with a thorough assessment of the property and the client’s specific needs. In this particular case, our team:
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Evaluated the structural constraints of the installation site
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Determined the optimal equipment size to avoid overconsumption
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Ensured a clean, safe, and long-lasting integration
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Verified compliance with electrical and environmental standards
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Advised the client on how to apply for available local grants
Added benefits for Ahuntsic-Cartierville residents
Given the borough’s many plexes and older homes, the SHARP ZU1 wall-mounted heat pump is an ideal upgrade. It offers modern thermal comfort without invasive renovations. Its low noise level also makes it especially suitable for densely populated areas.
Maintenance and durability: the importance of follow-up
We offer our clients a comprehensive annual maintenance plan, essential to maintaining peak performance of the heat pump over the years. Regular maintenance helps:
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Keep energy efficiency at its best
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Extend the lifespan of the unit
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Preserve indoor air quality
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Prevent costly breakdowns
Government grants and return on investment
Installing this SHARP 18000 BTU wall-mounted heat pump qualifies for a LogisVert rebate of up to $1,704, a highly attractive incentive for homeowners in Montréal, Laval, Longueuil, North Shore, and South Shore.
Combined with the ZU1 model’s low energy consumption, this grant makes the investment very profitable in the medium term.
Key takeaways
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The SHARP ZU1 18000 BTU wall-mounted heat pump is ideal for Québec’s harsh winters, performing efficiently down to -27°C.
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It provides year-round thermal comfort and unique air purification thanks to Plasmacluster technology.
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It’s eco-friendly (R32), energy-efficient, quiet, and grant-eligible.
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AirGreen’s expertise ensures a clean, safe, and lasting installation, even in complex configurations like tight backyards or low balconies.
Trust AirGreen for your HVAC installations in Montréal
At AirGreen, we take pride in offering tailored solutions to meet the specific needs of our clients, whether in Ahuntsic-Cartierville, Laval, Longueuil, or elsewhere on the North Shore and South Shore.
Our commitment: to provide top-quality installation, exceptional customer service, and long-term peace of mind.
Thinking of installing a SHARP ZU1 wall-mounted heat pump? Contact our team for a free quote, personalized guidance, and expert advice on available rebates.
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).