Installation of a Sharp ZU1 18,000 BTU Wall-Mounted Heat Pump in South Shore
See how our expert team installed a Sharp ZU1 18,000 BTU heat pump in South Shore, providing top-tier comfort and energy savings. Discover how we can help you achieve the same!
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.
The Power of Precision: How a Sharp ZU1 18,000 BTU Heat Pump Brought Comfort to a South Shore Home
In the heart of the South Shore, a family recently experienced a significant upgrade in their home's comfort and energy efficiency, thanks to AirGreen's seamless installation of a Sharp ZU1 18,000 BTU wall-mounted heat pump. This high-performance unit, designed to handle both extreme heat and cold, is a perfect fit for Quebec’s volatile weather conditions. But this was no ordinary installation—it was a carefully tailored solution for a homeowner who needed more than just an HVAC system; they needed precision, efficiency, and reliability.
A Quick Overview of the Sharp ZU1 18,000 BTU Heat Pump
Before we dive into the story behind this particular installation, let's talk about why the Sharp ZU1 18,000 BTU heat pump stands out.
- Cooling Capacity: 18,000 BTU, ideal for mid-sized homes or larger spaces.
- Heating Capacity: Up to -27°C, making it perfect for harsh Quebec winters.
- Energy Star® Certified: One of the most energy-efficient systems on the market.
- 24.0 SEER Efficiency: Delivers top-tier performance while consuming less power.
- Wi-Fi Connectivity: The ability to control your home’s temperature remotely.
But beyond its technical specs, the ZU1 is eligible for Hydro-Québec’s LogisVert Grant, offering up to $2,640 in rebates—an added bonus for homeowners looking to reduce both their energy bills and their environmental footprint.
The Challenge: Making Comfort a Reality in the South Shore
When we arrived at this beautiful home in the South Shore, we were greeted by a typical Quebec challenge—how to manage indoor temperatures efficiently across multiple seasons. Summers can be humid and unforgiving, while winters are harsh and frigid, sometimes plunging to temperatures well below freezing. This homeowner needed a solution that could handle both extremes with ease.
The installation space also posed some unique challenges. With limited outdoor clearance and the need for precise air circulation to reach all corners of the home, we knew that only a highly efficient, compact, and reliable heat pump like the Sharp ZU1 would suffice.
The Installation Process: Precision and Expertise
Installing a heat pump is about more than just attaching a unit to the wall. It requires careful planning, specialized tools, and a deep understanding of airflow dynamics. For this project, our expert technicians made sure every detail was accounted for.
Step 1: Mounting the Exterior Unit
The exterior unit of the Sharp ZU1 measures 33.47 x 13 x 27.94 inches, making it compact enough for the limited space we had to work with. This unit also operates at a sound pressure level of just 52.0 dB(A)—meaning it's as quiet as a typical conversation, a crucial consideration given the proximity to neighboring homes. We mounted the unit securely to ensure stability, especially during Quebec’s snowy and windy winters.
Step 2: Installing the Interior Unit
The interior unit of the Sharp ZU1 is equally sleek and unobtrusive, with dimensions of 41.42 x 9.80 x 12.44 inches. It was installed in a central area of the home to maximize airflow efficiency. The ZU1’s Coanda airflow control technology played a key role here. This feature ensures that air circulates evenly throughout the room without blasting directly onto occupants, ensuring both comfort and efficiency.
Step 3: Piping and Electrical Work
A crucial part of any heat pump installation is the piping and electrical work. For this installation, we used 1/4 - 3/8 inch pipes and ensured that the electrical setup was compatible with the unit’s 220V power requirements. Given that the unit uses the more environmentally friendly R-32 freon, we also ensured that the refrigerant lines were perfectly sealed to prevent any leaks.
Why the Sharp ZU1 is a Game Changer for This Home
This Sharp ZU1 18,000 BTU heat pump is more than just a piece of equipment—it’s a solution to the unpredictable Quebec climate. Here’s why this model was a perfect fit for this South Shore home:
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Year-Round Comfort: With a heating capacity that functions at temperatures as low as -27°C, this unit ensures warmth even on the coldest winter nights. At the same time, its powerful cooling capacity keeps the home comfortably cool during the hot, humid summer months.
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Energy Efficiency: Thanks to its 24.0 SEER rating, this Sharp model is one of the most energy-efficient heat pumps on the market, reducing energy consumption and saving the homeowner money.
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Silent Operation: One of the standout features of this unit is its near-silent operation. Whether indoors or outdoors, the noise level is incredibly low, ensuring a peaceful environment for the homeowner and their neighbors.
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Smart Connectivity: With built-in Wi-Fi connectivity, the homeowner can control the temperature of their home from their smartphone, making it easy to adjust settings on the go.
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Environmental Impact: The use of R-32 freon not only reduces the unit’s environmental footprint but also improves its cooling efficiency by 10% compared to traditional refrigerants.
Grants and Savings: Making It Affordable
In addition to the immediate benefits of comfort and efficiency, this installation also qualified for substantial financial rebates. The LogisVert Grant from Hydro-Québec offers up to $2,640, with an additional 25% bonification if the homeowner signs up for Hilo thermostats. Moreover, federal grants can provide an extra $2,500 to $5,000, making the Sharp ZU1 an investment that essentially pays for itself in the long run.
Conclusion: A Happy Ending for a South Shore Family
This Sharp ZU1 installation is a perfect example of how AirGreen brings tailored solutions to Quebec homeowners. Not only did we provide a top-tier product, but our careful planning and expert installation ensured that this family will enjoy year-round comfort, energy savings, and peace of mind for many years to come.
If you're looking for an HVAC solution that combines efficiency, quiet operation, and environmental responsibility, the Sharp ZU1 18,000 BTU wall-mounted heat pump could be the answer. Reach out to AirGreen today to discuss your own heating and cooling needs, and see how we can help you transform your home’s climate control.
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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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).