Installation of a SHARP BU Double Zone Heat Pump in Mercier–Hochelaga-Maisonneuve
Discover how AirGreen installed a SHARP BU Double Zone Heat Pump, bringing customized comfort to a Montreal home. Two zones, year-round efficiency, and WiFi control!
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The job on one screen
The unit’s data sheet
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 article, chapter by chapter
A Customized Heating and Cooling Solution for Ultimate Comfort
In the heart of Mercier–Hochelaga-Maisonneuve, our team at AirGreen recently completed a meticulous installation of the SHARP BU Double Zone Heat Pump. This high-performance system, renowned for its efficiency, adaptability, and superior comfort control, was the perfect solution for a household looking to manage two separate zones of their home with precision.
This installation featured a robust 24,000 BTU outdoor compressor paired with two indoor units – a 9,000 BTU unit for smaller spaces and an 18,000 BTU unit to manage larger areas. Designed to handle Montreal’s fluctuating climate, this system ensures optimal performance even in extreme temperatures as low as -27°C.
Why the SHARP BU Heat Pump Was the Ideal Choice
The SHARP BU Heat Pump is not just another HVAC solution. It is a game-changer for homeowners seeking energy efficiency, quiet operation, and modern technology. The model comes Energy Star® certified, operates at an impressive 24.0 SEER efficiency, and integrates with WiFi, giving homeowners unmatched control over their comfort.
Key Benefits of the Installed System:
- Double Zone Flexibility: The SHARP BU manages two separate zones independently, offering customized temperature control tailored to the specific needs of each room.
- Optimal Performance in Cold Weather: With its unique “HOT GAS PIPE” system, this unit excels in cold conditions, operating seamlessly down to -27°C.
- Energy Efficiency and Sustainability: Utilizing R-32 refrigerant, the system reduces environmental impact while providing superior heat transfer and energy savings.
- Whisper-Quiet Operation: With an exterior noise level of only 50.0 dB(A), the system operates almost silently, ideal for maintaining peace at home.
The Installation Story: From Concept to Completion
Every project comes with a story, and this installation was no exception. The homeowners, a growing family in Mercier–Hochelaga-Maisonneuve, reached out to us after struggling with uneven temperatures in their home. One floor was consistently colder, while the other remained uncomfortably warm.
After a comprehensive consultation, we identified the SHARP BU Double Zone Heat Pump as the perfect solution. Its dual-zone capacity allowed us to strategically place a 9,000 BTU unit in a smaller bedroom and an 18,000 BTU unit in the family’s expansive living area, ensuring comfort in both spaces year-round.
Technical Highlights of the Installation
- Exterior Compressor: Positioned discreetly to maintain the aesthetic appeal of the property while optimizing airflow.
- Two Interior Units: The smaller unit provided focused cooling for individual comfort in private spaces, while the larger unit covered the more demanding area.
- Perfect Measurements: The compact dimensions of the outdoor compressor (33.47 x 13 x 27.94) ensured a seamless installation without crowding the exterior space.
- Connectivity: With built-in WiFi control, the family now enjoys the flexibility of managing their home’s climate from anywhere, at any time.
An Investment in Long-Term Comfort and Savings
The SHARP BU Heat Pump is more than just an HVAC system; it’s a long-term investment in comfort, energy efficiency, and savings.
Why Our Customers Choose AirGreen
- Expertise You Can Trust: With years of experience serving Montreal, Laval, Longueuil, and beyond, our technicians are highly skilled and detail-oriented.
- Personalized Solutions: We take the time to understand your home’s unique needs and recommend systems that deliver lasting value.
- Competitive Advantage: This SHARP BU Heat Pump qualifies for the $3,000 LogisVert Grant offered by Hydro-Québec. It also ranked first in our Guide des Thermopompes Murales 2025, highlighting its exceptional quality and efficiency.
For our customer in Mercier–Hochelaga-Maisonneuve, this grant significantly reduced the upfront cost, making the investment even more attractive.
Modern Design Meets Cutting-Edge Technology
1. Advanced Air Quality
The SHARP BU system prioritizes air purification alongside temperature control. Its advanced filters ensure the air circulating in your home remains clean, free of allergens, dust, and bacteria.
2. Seamless Integration
The sleek, modern design of the indoor units allows them to blend effortlessly into any home décor. Whether mounted in a bedroom, living room, or workspace, they deliver comfort without compromising style.
3. User-Friendly Operation
Thanks to its WiFi integration, the SHARP BU Heat Pump provides unparalleled convenience. The family can now:
- Adjust temperatures remotely using a smartphone app.
- Set schedules for energy-efficient operation.
- Monitor system performance for optimal results.
Performance You Can Rely On in Any Season
Montreal’s unpredictable weather demands a heating and cooling system that works hard all year long. The SHARP BU’s 10-10-10 warranty (10 years on compressor, parts, and labor) guarantees peace of mind for years to come.
Superior Heating Capabilities
Even when temperatures drop to -27°C, this heat pump continues to perform efficiently, keeping your home warm and comfortable without relying on costly auxiliary heating systems.
Efficient Cooling
With a 24,000 BTU cooling capacity, the SHARP BU easily manages hot and humid summers, maintaining a consistently cool indoor environment.
Why Choose AirGreen for Your Heat Pump Installation?
At AirGreen, we take pride in delivering exceptional CVAC services across Montreal, Laval, Longueuil, the North Shore, and South Shore. Here’s what sets us apart:
- Attention to Detail: Every installation is completed with precision, ensuring optimal performance and longevity.
- Customer-Centric Approach: We’re committed to providing a seamless experience from consultation to post-installation support.
- Access to Leading Brands: We work with top-tier equipment, including the highly efficient SHARP BU Heat Pump.
Transform Your Home Comfort Today
If you’re looking for a reliable, energy-efficient solution to manage your home’s climate across multiple zones, the SHARP BU Double Zone Heat Pump is your answer. AirGreen is proud to deliver expert installations that exceed expectations.
Contact us today to learn more about our services and how you can benefit from the $3,000 LogisVert Grant. Let us help you make your home the perfect temperature—no matter the season.
The job tools
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.
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.
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).