Installation of a SHARP ZU1 18000 BTU Wall-Mounted Heat Pump in Saint-Léonard
Installation of a SHARP ZU1 18000 BTU wall-mounted heat pump in Saint-Léonard: year-round comfort, purified air with Plasmacluster, -27°C performance, and LogisVert rebate eligibility. A long-lasting HVAC solution by AirGreen.
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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-performance, sleek, and durable solution for year-round comfort in Saint-Léonard
At AirGreen, we are proud to have recently completed the installation of a SHARP ZU1 18000 BTU wall-mounted heat pump in a residential unit located in the Saint-Léonard neighborhood of Montréal. This installation is another demonstration of our expertise in HVAC and our commitment to energy-efficient solutions tailored to Québec’s climate.
A residential project in East Montréal: specific needs, custom solution
Our client was looking for an efficient wall-mounted heating and cooling solution for her ground-floor condo, exposed to significant temperature fluctuations throughout the year. The challenge was to deliver stable thermal comfort, while preserving the aesthetic appeal of her limited outdoor space, located right beside a sliding patio door.
The choice naturally fell on the SHARP ZU1 18000 BTU, a compact, high-performing, and discreet heat pump perfectly suited for this type of residential setting.
Why is the SHARP ZU1 Wall-Mounted Heat Pump a smart choice for Saint-Léonard?
Optimized energy performance
The SHARP ZU1 18000 BTU features an inverter compressor and uses R-32 refrigerant, recognized for its low environmental impact and superior energy efficiency. With a SEER of 24 and an HSPF of 13, it delivers outstanding performance in both summer and winter, while reducing electricity consumption.
Reliable operation down to -27 °C
This model is certified for extreme cold, capable of producing 11,500 BTU/h even when the outside temperature drops to -27°C, making it ideal for the harsh winters often seen in Montréal, and more specifically in Saint-Léonard, where cold snaps can be long and intense.
SHARP's exclusive Plasmacluster technology
The SHARP ZU1 comes equipped with Plasmacluster technology, a patented air purification system that neutralizes viruses, bacteria, allergens, mold, and odors. This feature is especially valued in urban areas where indoor air quality is a real health concern.
Outdoor unit installed on an elevated wall-mounted stand: a strategic choice
Stability, optimal clearance, and weather protection
As shown in the image, we chose to install the outdoor unit on a raised wall-mounted stand, firmly anchored to the concrete patio. This setup offers multiple advantages:
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Prevents snow and ice buildup in winter.
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Provides enough clearance for proper maintenance and ventilation.
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Enhances the longevity of the equipment, keeping it away from ground-level moisture.
Additionally, the unit is neatly placed next to the patio door, without obstructing access, which was an important aesthetic and functional requirement for our client.
Key stages of our installation in Saint-Léonard
1. Thermal needs assessment and model selection
We calculated the home's heating and cooling load based on sun exposure, window type, insulation, and the client’s lifestyle.
2. Professional, clean installation
Our certified team carried out:
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a secure indoor unit installation on the wall opposite the patio doors,
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neat wall perforation for refrigerant lines,
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precise airtight sealing around the wall passage,
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installation of the outdoor unit on a galvanized aluminum stand.
3. Complete commissioning
After verifying the refrigerant charge, we commissioned the system, checked pressures, measured airflow, and walked the client through the operation of the unit and remote control.
A heat pump eligible for grants
The SHARP ZU1 18000 BTU qualifies for Hydro-Québec’s LogisVert grant program, allowing eligible clients to receive financial assistance of over $1700, depending on the specifics of their home.
At AirGreen, we assist our clients with all the paperwork and steps required to apply for available rebates, maximizing their return on investment.
What this project demonstrates about our expertise
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In-depth knowledge of local needs: We know how to tailor every installation to the realities of Saint-Léonard homes, which are often semi-detached or duplex-style buildings.
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Mastery of HVAC installation standards: Our work strictly adheres to safety codes, required clearances, and best practices for long-term performance.
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Full support before, during, and after the project: From the initial assessment to startup, and ongoing maintenance, we remain available to support our clients.
Recommendations for future clients in Saint-Léonard
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Choose a heat pump certified for extreme cold if you live in Montréal or the North Shore.
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Request a precise thermal evaluation to avoid an over- or undersized heat pump.
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Invest in an elevated mounting stand to protect your outdoor unit over time.
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Inquire about available grants, as they can significantly reduce your total project cost.
Another successful installation by AirGreen
In Saint-Léonard, this new installation proves once again our ability to deliver durable, high-performance, and aesthetically pleasing solutions in urban environments with limited outdoor space. Thanks to the SHARP ZU1 18000 BTU wall-mounted heat pump, our client now enjoys optimal year-round comfort, cleaner air, and lower energy bills.
Want a personalized quote or more information about SHARP heat pumps? Contact us today! At AirGreen, we bring our expertise to all of Montréal, Laval, Longueuil, the North Shore, and the South Shore.
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).