Installation of a Sharp ZU1 18,000 BTU Wall-Mounted Heat Pump in Oka
Discover how the Sharp ZU1 heat pump brings year-round comfort and clean air to this Oka home—eligible for the highest LogisVert grant! Find out why it’s the best choice for Québec winters.
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.
Transforming Comfort in Oka with a High-Performance Sharp ZU1 Heat Pump
At AirGreen, we take pride in delivering reliable and cutting-edge HVAC solutions across Montreal, Laval, Longueuil, the Rive Nord, and the Rive Sud. Recently, we had the privilege of installing the all-new Sharp ZU1 18,000 BTU Wall-Mounted Heat Pump in a charming Oka residence. This system, known for its superior performance, innovative features, and unmatched energy efficiency, provides homeowners with year-round comfort and significant savings. More importantly, this exceptional installation qualified for a $2,640 LogisVert grant by Hydro-Québec, the highest grant available for any 18,000 BTU machine in Québec!
The Perfect Solution for Extreme Québec Winters
When our client in Oka reached out, they were looking for an energy-efficient solution capable of handling Québec's unforgiving winters, where temperatures often plummet below freezing. The Sharp ZU1 heat pump, equipped with heating capabilities down to -27°C, was the perfect answer. With its ability to provide efficient and consistent warmth during the coldest months and excellent cooling during the summer, it was an ideal match for their home.
Why the Sharp ZU1 Stands Out
The Sharp ZU1 isn't just any wall-mounted heat pump—it’s a game-changer in HVAC technology. Here’s what makes it such a standout choice:
- Cooling Capacity: 18,000 BTU – Perfect for mid-to-large spaces.
- Heating Capacity: Operational up to -27°C, ensuring comfort even during extreme cold snaps.
- Energy Efficiency: Boasting a remarkable 24.0 SEER efficiency rating, it provides optimal energy savings.
- New R-32 Refrigerant: Designed for environmental sustainability, this refrigerant reduces greenhouse gas emissions and electrical consumption by up to 10% compared to traditional options.
- Quiet Operation: With indoor sound pressure levels ranging from 25 to 49 dB(A) and exterior levels at a quiet 52.0 dB(A), the Sharp ZU1 operates without disruption.
Our customer in Oka wanted superior air quality, optimal temperature control, and the ability to manage energy costs effectively—features that the Sharp ZU1 delivers flawlessly.
Unique Features: Superior Air Purification with Plasmacluster Technology
One of the Sharp ZU1’s most impressive innovations is its exclusive Plasmacluster Technology. This advanced air purification system actively works to:
- Eliminate airborne viruses and mold
- Neutralize bacteria, allergens, and odors
- Improve overall indoor air quality
How does it work? The system diffuses natural positive and negative ions into the air, which bind to contaminants and neutralize them before transforming back into water vapor. For our Oka client, this means healthier air for their family and peace of mind knowing their home is a clean and safe environment.
Precision Airflow Control with Coanda Effect
The Coanda airflow control is another standout feature. Unlike traditional systems that create uneven temperature zones, the Sharp ZU1 leverages airflow redirection to evenly distribute heated or cooled air throughout the space. By strategically directing airflow along the ceiling or walls, it ensures uniform temperature control without uncomfortable drafts.
For our Oka installation, this meant no cold spots in winter and no hot spots in summer—just consistent comfort, no matter where you sit.
Technical Details of the Sharp ZU1 Installation
Here’s a breakdown of the key specifications and technical highlights:
- Interior Unit: Serial Number: AY-XP18ZU1
Dimensions: 41.42 x 9.80 x 12.44 inches - Exterior Unit: Serial Number: AE-X18ZU1
Dimensions: 33.47 x 13 x 27.94 inches - Refrigerant: R-32 (Eco-friendly)
- Pipe Sizes: 1/4 - 3/8 inches
- Voltage: 220V
This Sharp ZU1 heat pump installation in Oka ensures our client receives 10-10-10 warranty coverage (10 years on compressor, parts, and labor), with the extended warranty included. Such coverage reflects the unmatched durability and reliability of Sharp’s HVAC systems.
Installation Story: Meeting Our Client’s Needs in Oka
Our Oka client had a beautiful two-story home but struggled with inconsistent heating and cooling. After conducting a thorough assessment, we determined that the Sharp ZU1 18,000 BTU mini split would be the most suitable solution for their needs.
The installation process was smooth and efficient, thanks to our skilled AirGreen technicians. Given the Sharp ZU1’s compact dimensions, we were able to install the indoor unit in a central location near the staircase, optimizing airflow distribution across both floors. The exterior unit, with its anti-corrosion coating and superior drainage design, was positioned discreetly to maximize performance while blending into the home’s exterior aesthetic.
Our client was thrilled not only with the immediate improvement in comfort but also with the quiet operation and energy savings. Knowing that the system is eligible for the highest LogisVert grant of $2,640 further reinforced their satisfaction.
Why Choose AirGreen for Your HVAC Installations?
At AirGreen, we bring unmatched expertise and dedication to every HVAC project. Here’s why clients across Montréal, Laval, Longueuil, and the Rive Nord and Rive Sud trust us:
- Expert Technicians: Certified professionals with extensive experience.
- Top-Quality Products: We work with leading brands like Sharp, ensuring optimal performance.
- Grant Assistance: We guide you through obtaining provincial and federal grants to maximize your savings.
- Customer-Centric Approach: Every installation is tailored to meet your home’s specific needs.
The Sharp ZU1 18,000 BTU wall-mounted heat pump is also featured as the best option in our 2025 Heat Pump Guide, which highlights top-performing systems for Québec homeowners. (You’ll find the guide on our website—don’t miss it!)
Sharp ZU1: A Smart Choice for Every Home
By choosing the Sharp ZU1 18,000 BTU mini split, our Oka client not only improved their home’s comfort and air quality but also reduced their energy costs and environmental impact. With advanced technologies like Plasmacluster air purification, Coanda airflow, and the use of R-32 refrigerant, this system is truly a wise investment for any modern home.
If you’re looking to upgrade your HVAC system with a high-performance, energy-efficient heat pump, AirGreen is here to help. Contact us today for your free consultation and experience the difference our expertise makes.
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).