Installation of a SHARP ZU Wall-Mounted Heat Pump in Ahuntsic-Cartierville, Montreal
Discover how the SHARP ZU1 heat pump transforms a compact space in Montreal with innovative, wall-mounted installation and superior efficiency!
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.
Creative Solutions for Compact Spaces
In the bustling district of Ahuntsic-Cartierville, Montreal, space is a luxury, especially in the charming, densely packed residential areas. Here, homeowners often face the challenge of optimizing limited outdoor space while ensuring their homes remain comfortable throughout the varied Canadian seasons. This was precisely the challenge faced by one of our customers, leading to a unique installation by AirGreen—a SHARP ZU Wall-Mounted Heat Pump, cleverly placed to maximize living space without compromising functionality.
The Challenge: Maximizing Space
Our client’s residence, nestled in the heart of Montreal, boasted minimal backyard and balcony area, making it crucial to find an innovative solution for the installation of the outdoor compressor unit of the heat pump. The typical ground installation was not viable due to the cramped outdoor space. Our team at AirGreen needed a solution that would not only respect the limited area but also ensure efficient operation and easy maintenance of the system.
Innovative Installation Technique
To address this, we opted to mount the SHARP ZU1 unit on the wall. This approach is not common but was necessary under the circumstances. The wall-mounted technique allowed us to utilize vertical space, which is often overlooked in urban homes. This method ensured the unit was out of the way, safeguarding valuable ground area for other uses while keeping the unit at a height that facilitated easy access for maintenance.
Product Features and Specifications
The SHARP ZU1 model is renowned for its robust performance and energy efficiency, making it an ideal choice for our client. Here are some of the standout features:
- Model: SHARP ZU1
- Type: Wall-Mounted Heat Pump / Mini Split
- Cooling/Heating Capacity: 18,000 BTU
- Efficiency: 24.0 SEER
- Temperature Operation: Capable of heating even at -27°C
- Technology:
- Plasmacluster Ion Technology for superior air purification
- Coanda Airflow Control for even temperature distribution
- Dimensions:
- Interior Unit: 41.42 x 9.80 x 12.44 inches
- Exterior Unit: 33.47 x 13 x 27.94 inches
- Noise Level:
- Exterior: 52 dB(A)
- Interior: 25 / 49 dB(A)
- Additional Features:
- Energy Star® Certified
- WiFi Enabled
- AHRI Certified (213246053)
- Freon: R-32, environmentally friendly
- Warranty: 10 years on compressor, parts, and labor
Environmental Considerations and Efficiency
Our client was particularly impressed by the environmental credentials of the SHARP ZU1. With the new R-32 refrigerant, it offers a reduced environmental impact compared to older models. The heat pump is designed to be future-proof, aligning with upcoming 2025 energy regulations, ensuring our client won’t need to upgrade in the near future due to regulatory changes.
Client Satisfaction and Final Thoughts
Upon completion, our client expressed immense satisfaction with the installation. The wall-mounted approach not only saved space but also added an element of aesthetic appeal to the exterior of their home. The high efficiency and the quiet operation of the SHARP ZU1 have enhanced the comfort of their living environment, proving that no challenge is too big when you have the right team and technology.
At AirGreen, we pride ourselves on providing tailor-made solutions that meet the unique needs of each customer, ensuring that every installation is a step towards a more comfortable, sustainable, and efficient home.
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.
And at your place?
Two quick checks with real numbers: what heat costs, and what your current heaters add up to in BTU/h.
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.
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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?
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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).