Installation of a Sharp ZHU Wall-Mounted Heat Pump in Lachine, Montreal
Dive into AirGreen’s installation adventure in Lachine! Discover the Sharp ZHU - silent, efficient, and packed with unique features, meeting client and neighbor expectations seamlessly!
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The job on one screen
The article, chapter by chapter
Mastering Challenging Installations with Precision & Care
Navigating Through Challenges in Lachine, Montreal
In the vibrant area of Lachine, Montreal, our dedicated team at AirGreen recently undertook a particularly challenging installation project. The client had specific, non-negotiable requirements, emphasizing the importance of preserving balcony space and ensuring a quiet, efficient operation that would not disturb the neighbors.
Sharp ZHU: The Silent & Efficient Performer
The Sharp ZHU Wall-Mounted Heat Pump was the ultimate choice for this project due to its impressive features:
- Cooling Capacity: A potent 12,000 BTU, guaranteeing a comfortable atmosphere irrespective of the external temperatures.
- Heating Efficiency: Capable of providing warmth even at a chilling -27°C.
- Quiet Operation: With an exterior sound pressure level of just 49 dB(A), it operates silently, respecting the tranquility of the residential environment.
Unique Features for Distinct Requirements
The Sharp ZHU is not just another heat pump; it’s a marvel of technology with unique features that set it apart:
- Plasmacluster Air Purification: The only machine in Canada with this distinctive feature, ensuring the air is not only cooled or heated but also purified.
- R-32 Freon: The first and only unit utilizing R-32 Freon in Canada, offering 10% more efficiency compared to the commonly used R-410 gas.
Installation Precision: Balancing Space & Efficiency
Our client was adamant about not sacrificing any balcony space. Understanding the premium on space, our skilled technicians meticulously installed the compressor on the wall adjacent to the balcony, ensuring no loss of valuable balcony area while maintaining the unit’s efficiency.
Harmony with Neighbors: A Silent Agreement
Maintaining good relations with neighbors was paramount for our client. One neighbor had a specific decibel limit requirement for the compressor, set at 50 dB(A). The Sharp ZHU, with its maximum noise level of 49 dB(A), not only met but exceeded these expectations, ensuring a harmonious living environment for all.
Customer-Centric Approach: Meeting & Exceeding Expectations
From the initial consultation to the completion of the installation, our focus was on addressing the unique needs and expectations of our client. The client was thrilled with our proactive approach, our ability to provide solutions tailored to their requirements, and our commitment to ensuring customer satisfaction.
Federal & Provincial Grants: Smart Savings
The Sharp ZHU qualifies for both Federal and Provincial grants, allowing the client to enjoy significant savings. With up to $5,000 available through the Federal Grant and an additional $475 from the Provincial Grant, it’s an investment that is as economical as it is efficient.
Conclusion: A Tale of Successful Installation
This installation story in Lachine, Montreal, is a testament to AirGreen’s dedication to delivering HVAC solutions that are not only efficient and innovative but also meet the unique needs and challenges presented by our clients. The Sharp ZHU Wall-Mounted Heat Pump stands as a symbol of our commitment to excellence in every project we undertake.
The job tools
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.
How the job unfolds
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 we check on a job like this one
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.
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.
Good habits, once the unit is in place
Six simple habits that keep the unit going. Your list stays on this device.
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.
The right pages, at the right time
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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An on-site estimate, the right capacity, the right equipment.
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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).