Installation of a Sharp ZHU Wall-Mounted Mini Split in Saint-Léonard, Montreal
A unique challenge in Saint-Léonard led to a seamless installation of the Sharp ZHU Mini Split. Experience efficient cooling with a touch of purified air!
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 Seamless Transition to Superior Comfort
The Challenge
In the heart of Saint-Léonard, Montréal, a client approached us with a unique request. They had an older 12,000 BTU machine perched on their roof, which had seen better days. The client was adamant about one thing: they wanted an upgrade without altering the existing pipes or electrical wiring. A challenge? Perhaps for some, but not for AirGreen.
The Perfect Match
After thorough research and evaluation, we identified the Sharp ZHU Wall-Mounted Mini Split as the ideal solution. This 18,000 BTU powerhouse not only matched the client's specifications for pipes (1/4 - 3/8) and electrical requirements but also brought along a suite of advanced features.
- Cooling Capacity: 18,000 BTU
- Heating Capacity: -27°C
- Dimensions Interior (L x D x H): 41.42 x 9.80 x 12.44
- Dimensions Exterior (L x D x H): 33.47 x 13 x 27.94
- Energy Star®: Yes, for optimal energy efficiency
- WiFi: Included, for smart control
- Efficiency: 25.0 SEER, ensuring top-notch performance
- Warranty: 10-10-10 with an extended warranty included
- Sound Pressure Level: Exterior at 52.0 dB(A) and Interior ranging between 25 to 49 dB(A)
- Gas (Freon): R-32, a first in Canada for Sharp
Why the Sharp ZHU Stands Out
The Sharp ZHU isn't just any mini split. It's a testament to Sharp's commitment to innovation. One of its standout features is the integrated air purifier. In a world where air quality is paramount, having a heat pump that doubles as an air purifier is nothing short of revolutionary. Sharp's pioneering use of R-32 Freon in Canada further cements its position as a market leader.
Installation: Smooth as Silk
Despite the client's specific demands, our team found the installation process to be straightforward. The transition from the old unit to the Sharp ZHU was seamless. The client's joy knew no bounds when they experienced the dual benefits of efficient cooling and purified air, all thanks to the unique features of the Sharp ZHU.
Grants and Savings
Another feather in the cap for our client was the eligibility for grants:
- Federal Grant: Between $2,500 and $5,000
- Provincial Grant: $700
These grants, combined with the energy efficiency of the Sharp ZHU, mean substantial savings in the long run.
Why Choose AirGreen?
Our recent installation in Saint-Léonard is just one example of how we tailor solutions to meet individual needs. At AirGreen, we don't just install HVAC systems; we enhance lifestyles. Our commitment to quality, combined with our expertise, ensures that every installation is a story of success.
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.
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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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).