Installation of a SHARP ZU1 18,000 BTU Wall-Mounted Heat Pump in Ville Mont-Royal
Installation of a SHARP ZU1 18,000 BTU wall-mounted heat pump in Ville Mont-Royal: a quiet, powerful and energy-efficient solution, carried out with precision by AirGreen.
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.
Optimal energy-efficient comfort at TMR thanks to SHARP technology and AirGreen expertise
At AirGreen, every wall-mounted heat pump installation project is an opportunity to transform a living space into a healthy, energy-efficient, and sustainable environment. That's exactly what we accomplished during this recent installation in Town of Mount Royal , where we installed the powerful and discreet 18,000 BTU SHARP ZU1 heat pump in a home seeking reliable comfort, summer and winter.
A wise choice: the SHARP ZU1, a high-performance wall-mounted heat pump
The installed model, SHARP ZU1 of 18,000 BTU , is one of the most advanced on the market of wall-mounted mini-splits . It combines energy efficiency , Plasmacluster air purification technology , and quiet operation . Here is an overview of its main technical characteristics:
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Capacity : 18,000 BTU (heating and cooling)
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Heating temperature down to -27°C
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R-32 refrigerant , with low environmental impact
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Energy efficiency :
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SEER2: 24.0
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HSPF2: 10.0
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EER2: 13.0
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Certifications : ENERGY STAR® and ENERGY STAR® Cold Climate
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Wi-Fi connection included for smart remote control
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Indoor noise level : between 25 and 49 dB(A)
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Model numbers :
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Interior: AY-XP18ZU1
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Exterior: AE-X18ZU1
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Eligible for the LogisVert grant of $2,640
Progress of the installation in Ville Mont-Royal
A discreet and perfectly integrated wall installation
One of the challenges in this TMR residence was installing the indoor unit in a living room with a low ceiling and near a difficult architectural corner. Using our precision ladder and specialized tools, our technicians positioned the unit precisely, while respecting SHARP's recommended clearances for optimal airflow.
Preparation and crossing of wall
The AirGreen team first secured the wall template provided by SHARP, drilled the anchor points, and prepared the wall penetration for the refrigerant lines (1/4 – 3/8 inches). The outdoor unit was then placed on a vibration-damping base, away from windows to maximize noise reduction.
Pressure testing, vacuuming and calibration
After connecting the copper pipes, we performed a pressure test to verify the refrigeration circuit's tightness. A vacuum was applied for 45 minutes at -500 microns, followed by a full system startup with flow, pressure, and performance verification using our professional Bluetooth tools.
Why does this installation stand out?
1. An ideal performance for Montreal's climate
Capable of operating down to -27°C, this SHARP wall-mounted heat pump is designed for Quebec winters. In Ville Mont-Royal , where temperature fluctuations are frequent, customers will benefit from consistent comfort, without excessive reliance on secondary heating systems.
2. Exemplary aesthetic integration
The client wanted a discreet installation, with no visible ducts. Thanks to our expertise, we integrated the system elegantly, with a flawless finish around the wall plate and exterior ducts.
3. Smart and quiet comfort
With the mobile app and Wi-Fi connectivity , occupants can adjust the temperature, schedule cycles, and track energy consumption in real time. Quiet operation ensures comfort even at night or in workspaces.
LogisVert grant: a major incentive for this project
The installation of this SHARP ZU1 18,000 BTU heat pump is eligible for the $2,640 LogisVert grant , a provincial financial aid offered by Hydro-Québec. AirGreen assists each customer with the administrative procedures to ensure rapid receipt of these grants, significantly reducing the total cost of the project.
Testimonial from a client of Ville Mont-Royal
"I am extremely satisfied with this Sharp ZU1 heat pump. It heats perfectly, even on the coldest winter days. The AirGreen team was punctual, professional, and very attentive to my needs. Thank you again!" — Residential customer, Town of Mount Royal
Why trust AirGreen for your HVAC projects?
At AirGreen, we master every step of the HVAC process , from choosing the right equipment to precise installation, including grant support and after-sales service. Here's what makes us different:
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Certified and experienced technicians
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Clean and tidy facilities, without compromise
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Complete support for subsidies (LogisVert, ÉcoPerformance, etc.)
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100% Customer Satisfaction Commitment
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No deposit service: pay only when you are satisfied
Practical advice for residents of Town of Mount Royal
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Never place your wall unit behind a door or curtain : this compromises air circulation.
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Clean the filters every 4 to 6 weeks , especially during periods of heavy use.
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Have your unit inspected annually by an AirGreen professional to maintain the warranty.
Conclusion
This SHARP ZU1 18,000 BTU wall-mounted heat pump installation in Town of Mount Royal perfectly illustrates our commitment to performance, aesthetics, and energy efficiency . Thanks to our expertise in residential HVAC , TMR residents now enjoy reliable comfort year-round, while reducing their energy footprint.
For a free in-home assessment , contact AirGreen today. Together, let's transform your environment into a healthy, quiet, and energy-efficient living space.
Call us today at (514) 316-2973 for your project in Montreal, Laval, Longueuil, South Shore or North Shore!
How it goes, from the first call to the end
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 the unit delivers when it is cold
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.
And 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.
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.
Which type of equipment for your project?
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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).