Installation of a SHARP CPU Airest 12,000 BTU Wall-Mounted Heat Pump in Montreal (South Shore)
Installation of a SHARP Airest 12,000 BTU wall-mounted heat pump on Montreal's South Shore. Thermal comfort, air purification, Wi-Fi, quiet operation, and a LogisVert grant. An AirGreen project combining efficiency and design.
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An exemplary installation by AirGreen in the heart of Montreal’s South Shore
At AirGreen , we believe that a high-performance air conditioning and heating system must integrate perfectly with the reality of each home. Recently, our team installed a SHARP CPU Airest 12,000 BTU wall-mounted heat pump in a residence located on the South Shore of Montreal , a residential area where thermal comfort and air purification needs are priorities.
This installation is a perfect example of our technical expertise, attention to detail, and commitment to energy efficiency. Let's explore the details of this meticulously and professionally executed project.
A strategic choice: the SHARP CPU Airest heat pump
An all-in-one system: heating, air conditioning and air purification
The SHARP CPU Airest 12,000 BTU is no ordinary heat pump. This model stands out for its Plasmacluster NEXT technology , which releases active ions into the air to neutralize bacteria, viruses, allergens, and unpleasant odors. This unique feature makes it a true air purifier certified according to the JEM1467 standard.
Remarkable energy efficiency
Featuring a SEER2 of 21.0 and a HSPF2 of 10.5 , this heat pump ensures optimal comfort while limiting energy costs. It operates perfectly in heating mode down to -27°C , thanks to the use of R-32 refrigerant — more efficient and environmentally friendly.
Technical details of the installation
Equipment Information
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Indoor model : AY-XP12CPU
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Outdoor model : AE-X12CPU
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Cooling capacity : 12,000 BTU
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Energy Class : ENERGY STAR® (Cold Climate Certified)
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Refrigerant : R-32
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Voltage : 220V
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Sound level (indoor) : from 24 to 49 dB(A)
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Sound level (outdoor) : 50 dB(A)
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Piping : 1/4 – 3/8
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Built-in WiFi : Yes (COCORO AIR compatible)
Applicable grant
The customer benefits from the LogisVert subsidy of $1,800 , updated to May 1, 2025 , which significantly reduces the cost of the equipment.
Installation process
A discreet and lasting integration
Our technicians installed the outdoor unit on reinforced wall brackets in a sheltered corner of the backyard, near a pool filtration system. The installation was carefully planned to maximize airflow while avoiding obstructions . A white vertical trunking elegantly conceals the refrigeration ducts and electrical connections, ensuring a neat and durable finish.
Secure connections and commissioning test
The ducts were insulated and sealed according to current standards, with a watertight electrical protection box . A complete check of the tightness, vacuum and refrigerant level was carried out before commissioning . This was completed with a detailed explanation to the customer regarding the use of the COCORO AIR mobile application, included with the system.
Results and customer satisfaction
The customer was impressed by the quiet operation of the indoor system, which is almost imperceptible in the bedroom. He also noticed a noticeable improvement in indoor air quality , with a significant reduction in odors and better nighttime breathing.
In addition, thanks to smart control via WiFi , the customer can now adjust the temperature remotely or program schedules according to their habits - a major advantage for optimizing energy consumption.
Why choose AirGreen for your HVAC projects in Montreal and the surrounding area?
An experienced and passionate team
At AirGreen , we don't just sell and install heat pumps—we offer customized comfort solutions . Each installation is carefully planned based on the building's specifics and the client's needs. Our team is comprised of certified refrigeration engineers with years of experience installing HVAC systems in Montreal, Laval, Longueuil, the North Shore, and the South Shore .
Complete transparency
We believe in an honest approach: no deposit required , a free on-site estimate , and payment only when you are 100% satisfied .
Fast and human after-sales service
Our customers benefit from post-installation follow-up , with the possibility of quickly obtaining maintenance interventions or adjustments.
Care tips for optimal performance
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Clean the internal filter regularly to maintain good air quality.
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Schedule an annual maintenance with our AirGreen technicians to ensure compressor longevity.
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Monitor condensate and ensure that no obstructions are preventing water from draining.
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Use the built-in auto/clean mode to limit internal humidity and mold.
Conclusion
The installation of this SHARP CPU Airest 12,000 BTU wall-mounted heat pump on the South Shore is a demonstration of our expertise in residential HVAC , combining cutting-edge technology , careful design , and respect for the environment . Thanks to AirGreen , this Montreal home now benefits from an energy-efficient, quiet, and air-purifying system, perfect for facing Quebec's climatic extremes.
Would you like a free estimate or to find out what grants you're eligible for? Contact us today and discover why hundreds of homeowners trust AirGreen for their HVAC projects in Montreal, Laval, Longueuil, and on the North and South Shores.
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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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).