Installation of a Sharp BU Double Zone Heat Pump in West Island
Discover how AirGreen installed a Sharp BU Double Zone Heat Pump in West Island, bringing eco-friendly efficiency, advanced air purification, and powerful heating to beat Montreal’s toughest winters.
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 Reliable and Energy-Efficient HVAC System for Montreal's Challenging Climate
At AirGreen, we take pride in delivering innovative and efficient heating and cooling solutions for homes across Montreal, Laval, Longueuil, and surrounding areas. This time, we’ve installed a Sharp BU Double Zone Heat Pump for a residence located in West Island, a beautiful suburban neighborhood known for its diverse residential properties and harsh winter conditions. This installation represents another success in our ongoing mission to provide comfort and energy efficiency to our clients.
Why This Installation Stands Out
Sharp BU Double Zone Heat Pump is not just another HVAC system; it’s a masterpiece of engineering designed to handle two independent zones within a home. With 24,000 BTU of cooling power and the ability to perform optimally even in temperatures as low as -27°C, this system ensures year-round comfort regardless of the weather conditions outside. The homeowners in West Island can now enjoy perfectly cooled rooms during hot summers and comfortably warm spaces during frigid winters.
This system is powered by R-32 refrigerant, known for its low environmental impact, enhancing both energy efficiency and sustainability. As a double-zone system, it can cater to two distinct areas of the house, allowing for customized temperature settings based on the occupants' needs. This flexibility is a significant upgrade for homeowners who have previously struggled with single-zone systems that couldn’t evenly distribute air throughout the house.
The Installation Process: Challenges and Successes
The project in West Island wasn’t without its unique challenges. The home had a modern design, which required us to carefully plan the positioning of the interior units to maintain the aesthetic appeal of the living spaces. The Sharp BU comes equipped with sleek and compact indoor units, each with 12,000 BTU capacity, which made it easy for us to blend them into the interior decor.
Our team faced an additional challenge when working with the tight space for the external compressor unit. With dimensions of 33.47 x 13 x 27.94 inches, the Sharp BU exterior unit had to be mounted in a location that provided both easy access for maintenance and an unobtrusive appearance. We carefully planned the placement to ensure that it would be shielded from the harsh elements while maintaining optimal performance.
Once the units were installed, we fine-tuned the settings for maximum efficiency. The heat pump’s 24.0 SEER rating ensures that the homeowners will enjoy lower energy bills while maintaining comfort in every room. The system's low 50 dB(A) sound level for the exterior unit also guarantees quiet operation, ensuring it won’t disturb the peaceful atmosphere of the neighborhood.
Unique Features of the Sharp BU Double Zone Heat Pump
Advanced Air Purification with Plasmacluster® Technology
One of the standout features of the Sharp BU system is its Plasmacluster® air purification technology. Unlike traditional HVAC systems that merely regulate the temperature, this system goes a step further by actively improving indoor air quality. By generating positive and negative ions, the system effectively neutralizes bacteria, viruses, allergens, and unpleasant odors. This provides homeowners with more than just comfort — it provides cleaner, healthier air for their entire family.
Maximum Energy Efficiency with R-32 Refrigerant
At AirGreen, we are committed to sustainability, which is why we were thrilled to install a system that uses the R-32 refrigerant. This eco-friendly gas has a lower global warming potential (GWP) compared to other refrigerants, making it an environmentally conscious choice for today’s homeowners. The Sharp BU not only performs well in terms of energy efficiency but also reduces its impact on the environment.
Heating Capacity for Harsh Winters
Montreal winters are no joke, and the Sharp BU heat pump is more than equipped to handle extreme conditions. With its ability to heat effectively down to -27°C, this system will ensure the home remains warm and cozy even during the coldest months. The HOT GAS PIPE system further enhances performance by preventing ice build-up on the external unit, allowing for continuous operation even in the iciest of conditions.
Grant Eligibility for Hydro-Québec's LogisVert Program
A significant advantage of choosing the Sharp BU Double Zone system is its eligibility for Hydro-Québec's LogisVert program, which offers up to $3,000 in grants for energy-efficient upgrades. This, combined with the potential to claim $2,500 in federal grants, means that the homeowners not only benefit from enhanced comfort but also save money in the long term.
What Makes This System Ideal for West Island Homes
The Sharp BU Double Zone Heat Pump is perfectly suited for the unique climate and residential designs found in West Island. Its sleek and modern design complements the aesthetic preferences of homeowners who want their HVAC systems to blend seamlessly into their homes. Additionally, its energy efficiency is a massive advantage for environmentally conscious homeowners who want to reduce their carbon footprint.
But perhaps what stands out most about this installation is the system’s ability to adapt to the ever-changing Montreal weather. Whether it’s a scorching summer day or a freezing winter night, the Sharp BU delivers optimal performance in every season.
Our Commitment to Quality and Customer Satisfaction
At AirGreen, we believe that every installation should meet the highest standards of quality and customer satisfaction. For this West Island installation, we not only ensured that the system was installed to function optimally but also took extra care to educate the homeowners on how to operate and maintain their new system.
We explained the benefits of using the WiFi-enabled control system that comes standard with the Sharp BU. With this feature, homeowners can control the temperature of their two zones remotely, ensuring their home is always at the perfect temperature before they even walk in the door.
Final Thoughts: The Sharp BU – A Perfect Blend of Innovation and Comfort
The installation of the Sharp BU Double Zone Heat Pump in this West Island home is another testament to our dedication to providing high-quality HVAC solutions. With features like Plasmacluster® technology, R-32 refrigerant, and an industry-leading 24.0 SEER rating, this system is designed to enhance comfort, improve air quality, and lower energy costs.
This installation, paired with the eligibility for Hydro-Québec’s LogisVert grant, ensures that our clients not only invest in comfort but also in a more sustainable, cost-effective future. We’re proud of the work we’ve done here, and we’re confident that the homeowners will enjoy many years of unparalleled comfort.
The unit on this job, in figures
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 BU 24 0002 Zones (Dual Zone) | 25,000 | 21,200 | −27 °C: 14,600 | 2.3 | 24.0 | 11.5 | $3,000 |
| Sharp BU 24 0003 Zones (Triple Zone) | 25,000 | 21,200 | −27 °C: 14,600 | 2.3 | 24.0 | 11.5 | $3,000 |
Among the year’s most efficient according to ENERGY STAR, on top of its cold-climate certification.
Minimum certified capacity (NEEP): it slows down instead of stopping when a single room calls.
NEEP still lists 14,600 BTU/h at a COP of 1.84 at −17 °F.
Global warming potential of R-32, versus 2,088 for R-410A (ENERGY STAR).
Among the year’s most efficient according to ENERGY STAR, on top of its cold-climate certification.
Minimum certified capacity (NEEP): it slows down instead of stopping when a single room calls.
NEEP still lists 14,600 BTU/h at a COP of 1.84 at −17 °F.
Global warming potential of R-32, versus 2,088 for R-410A (ENERGY STAR).
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.
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.
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.
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.
More jobs to see, near you
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Each dot: a town where AirGreen has published projects. The glowing dot: this job.
Every house has its constraints. We see them before we install.
The on-site estimate is free and the quote follows within 24 hours.
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).