Installation of a SHARP ZU1 12,000 BTU Wall-Mounted Heat Pump in West Island (Montréal)
Installation of a SHARP ZU1 12,000 BTU heat pump in West Island. Purified air, strong heating performance down to -27°C, year-round comfort. A signature AirGreen project in Montréal.
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 discreet indoor installation, remarkable thermal comfort for our clients in West Island
In this recent project, our team at AirGreen had the pleasure of installing a SHARP ZU1 12,000 BTU wall-mounted heat pump in a residence located in West Island, Montréal. This installation perfectly reflects our commitment to efficient, aesthetic, and durable HVAC solutions in residential areas. The system, seamlessly integrated into a bright living room, is designed to provide optimal performance for both cooling and heating—even during Québec’s harsh winters.
The context: meeting a precise year-round comfort need
The house in question, located in a quiet West Island neighborhood, had excellent insulation but lacked proper thermal regulation during the in-between seasons. The homeowner, looking to reduce energy costs while improving ambient comfort, needed a solution that was compact, quiet, energy-efficient, and reliable over the long term. That’s when they called on our HVAC experts at AirGreen to recommend and install the most suitable wall-mounted heat pump.
Why the SHARP ZU1 12,000 BTU? A compact, smart, and energy-efficient model
We recommended the SHARP ZU1 12,000 BTU model for several key reasons:
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Excellent energy performance: with a SEER of 21 to 22 and HSPF up to 12.5, this unit ranks among the best in its class.
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Plasmacluster technology: a major advantage unique to SHARP heat pumps, which purifies indoor air by neutralizing bacteria, viruses, mold, and allergens—a definite plus for indoor air quality.
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Reliable performance down to -27°C: the ZU1 delivers 7,200 BTU/h even at -27°C, making it a true Nordic heat pump, capable of operating where other models fall short.
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R-32 refrigerant: more eco-friendly, this refrigerant reduces CO₂ emissions by up to 30% compared to R-410A.
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Minimalist and elegant design: perfect for discreet wall mounting in contemporary living spaces.
An installation with no compromise on aesthetics or performance
Upon arriving on-site, our team assessed the optimal placement to ensure even airflow distribution without direct blowing on the occupants, in line with SHARP’s Coanda effect principle.
Key steps of the installation:
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Technical assessment of the supporting wall to ensure a secure mount.
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Precise drilling through the exterior wall for refrigerant and electrical feeds.
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Installation of reinforced wall bracket, followed by the careful mounting of the indoor unit.
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Connection to the outdoor compressor, strategically positioned to minimize noise and optimize thermal dissipation.
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Full commissioning, including pressure checks, activation of Plasmacluster functions, and Wi-Fi setup.
A perfect integration into the living space
As shown in the project photo, the indoor unit fits beautifully with the living room décor: centered on the main wall just above a framed artwork, with no interference to furniture or natural lighting. The installation was designed to respect the room’s aesthetic while ensuring maximum thermal efficiency. The unit runs silently, generating only 23 dB in ultra-quiet mode, ideal for relaxing spaces or remote work.
Results and client satisfaction
Within just a few hours of installation, the client immediately noticed a boost in comfort. The house, previously subject to temperature swings, is now maintained at a constant, pleasant temperature, year-round. Thanks to Wi-Fi connectivity, the client now controls the heat pump from a smartphone and even receives notifications when a family member returns home.
The client also appreciated the eligibility for Hydro-Québec LogisVert grants, for which the SHARP ZU1 qualifies, helping to reduce the overall project cost.
Why trust AirGreen for your HVAC projects in West Island?
At AirGreen, we offer more than just installation: we deliver a complete experience, from needs assessment to professional commissioning, including advice on available grants and preventive maintenance.
Our strengths include:
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Recognized local expertise, especially in Montréal, Laval, Longueuil, the North Shore, and the South Shore.
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A personalized approach tailored to every home.
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Certified technical teams passionate about energy efficiency.
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A direct partnership with SHARP, ensuring access to the best warranties on the market.
Tips to maximize the lifespan of your SHARP wall-mounted heat pump
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Have your unit inspected at least once a year.
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Regularly clean the HEPA and activated carbon filters.
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Keep the area around the outdoor unit free from debris, snow, or leaves.
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Use the smart scheduling features to program comfort while avoiding energy waste.
Conclusion
The installation of this SHARP ZU1 12,000 BTU wall-mounted heat pump in West Island, Montréal once again shows how AirGreen combines cutting-edge technology with local know-how to provide HVAC solutions that are sustainable, high-performance, and seamlessly integrated. Thanks to products like those in the ZU1 series, our clients benefit from purified air, outstanding thermal comfort, and real energy savings—all in a sleek, modern design.
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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Each dot: a town where AirGreen has published projects. The glowing dot: this job.
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).