Installation of a SHARP ZU1 Ductless Heat Pump in Sainte-Catherine
Discover how AirGreen brought comfort and efficiency to a Sainte-Catherine home with the SHARP ZU1 heat pump, designed for extreme cold and backed by advanced air purification technology.
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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 ZU1 12 000 | 14,500 | 12,000 | −27 °C: 7,200 | 2.11 | 22.0 | 11.0 | $1,740 |
| Sharp ZU1 15 000 | 18,100 | 15,300 | −27 °C: 10,100 | 2.1 | 24.0 | 11.0 | $2,172 |
| Sharp ZU1 18 000 | 22,000 | 18,000 | −27 °C: 11,500 | 2.2 | 24.0 | 11.0 | $2,640 |
| Sharp ZU1 24 000 | 22,400 | 19,000 | −27 °C: 12,300 | 2.2 | 22.0 | 11.0 | $2,688 |
According to NEEP, it delivers 14,500 BTU/h at −8 °C (17 °F), more than at 8 °C (14,000 BTU/h). It heats as hard in moderate cold as in mild weather.
According to NEEP, its certified maximum capacity at −27 °C (−17 °F) is 7,200 BTU/h, 60% of its nominal 12,000 BTU size.
At 8 °C, its certified maximum capacity reaches 17,100 BTU/h, 42% more than its nominal 12,000 BTU size.
According to NEEP, it delivers 18,100 BTU/h at −8 °C (17 °F), more than at 8 °C (18,000 BTU/h). It heats as hard in moderate cold as in mild weather.
According to NEEP, its certified maximum capacity at −27 °C (−17 °F) is 10,100 BTU/h, 67% of its nominal 15,000 BTU size.
At 8 °C, its certified maximum capacity reaches 21,800 BTU/h, 45% more than its nominal 15,000 BTU size.
According to NEEP, it delivers 22,000 BTU/h at −8 °C (17 °F), more than at 8 °C (21,600 BTU/h). It heats as hard in moderate cold as in mild weather.
According to NEEP, its COP at −27 °C is 1.88: the highest of the ZU1 line, which ranges from 1.79 to 1.82 at that temperature.
According to NEEP, its certified maximum capacity at −27 °C (−17 °F) is 11,500 BTU/h, 64% of its nominal 18,000 BTU size.
At −27 °C, its certified minimum capacity is 3,200 BTU/h (5,500 at 8 °C). It slows down instead of cycling on and off.
According to NEEP, its certified heating capacity at −15 °C (5 °F) is 19,000 BTU/h, 79% of its nominal 24,000 BTU size. Its COP there is 2.20.
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
Installation of a SHARP ZU1 Ductless Heat Pump in Sainte-Catherine
A Game-Changing HVAC Installation on the South Shore
At AirGreen, we take pride in bringing cutting-edge heating and cooling solutions to homes across Greater Montreal. Recently, we completed an installation of the SHARP ZU1 18,000 BTU ductless heat pump for a home in Sainte-Catherine, South Shore. This high-performance unit combines modern design, energy efficiency, and advanced air purification, making it an ideal choice for Quebec's climate.
Why Choose the SHARP ZU1?
The SHARP ZU1 is more than just a heat pump; it’s a comprehensive climate control solution. This model is designed to excel in extreme conditions, providing efficient heating even at temperatures as low as -27°C. With a 24 SEER energy efficiency rating and R-32 refrigerant, the ZU1 is not only environmentally friendly but also helps homeowners reduce energy costs significantly.
Key Features of the SHARP ZU1:
- Cooling Capacity: 18,000 BTU
- Heating Capacity: Performs seamlessly down to -27°C
- Energy Efficiency: 24 SEER and Energy Star® certified
- WiFi Integration: Remote control and monitoring via smartphone
- Quiet Operation: Noise levels as low as 25 dB(A) indoors
- Plasmacluster Technology: Superior air purification to eliminate airborne contaminants
- 10-10-10 Warranty: 10 years on the compressor, parts, and labor
The Sainte-Catherine Installation: A Closer Look
This particular installation was for a young family looking to upgrade their home’s comfort and energy efficiency. The customer chose the SHARP ZU1 not only for its advanced features but also because it qualifies for the $2,640 LogisVert Grant from Hydro-Québec, the highest grant available for an 18,000 BTU unit in Quebec.
Planning the Perfect Placement
To maximize the performance and efficiency of the heat pump, our technicians carefully evaluated the home’s layout. The indoor unit was installed in the main living area, ensuring uniform heating and cooling throughout the home. The outdoor unit was mounted on a brick exterior wall using a sturdy bracket system, designed to withstand Quebec’s harsh winters. Proper clearance was maintained to facilitate airflow and easy maintenance.
Precision Installation for Optimal Performance
Our installation team followed a meticulous process to ensure every detail was perfect:
- Pre-installation Inspection: We assessed the home’s electrical system to confirm compatibility with the unit’s 220V requirements.
- Refrigerant Line Installation: High-quality insulated piping (1/4" - 3/8") was used to connect the indoor and outdoor units, ensuring optimal refrigerant flow.
- System Calibration: Once the installation was complete, the heat pump was calibrated to deliver peak performance in both heating and cooling modes.
Plasmacluster Technology: Cleaner Air, Healthier Home
One of the standout features of the SHARP ZU1 is its Plasmacluster air purification system, which eliminates airborne viruses, bacteria, and allergens. This innovative technology ensures the air in your home is not only comfortable but also safe to breathe. For families with young children or allergy sufferers, this feature provides peace of mind.
How Plasmacluster Works:
- Ion Diffusion: The system releases positive and negative ions into the air.
- Contaminant Neutralization: These ions attach to airborne particles, neutralizing harmful microbes and odors.
- Reconversion: The ions transform into water molecules, returning to the air as natural humidity.
Performance in Extreme Weather
Quebec winters can be brutal, but the SHARP ZU1 is built to thrive in the cold. Its Hot Gas Pipe System prevents freezing in the outdoor compressor, while the defrost function minimizes energy loss during harsh weather. These features ensure uninterrupted heating, even during the most frigid conditions.
Smart Connectivity for Modern Living
The SHARP ZU1 comes with built-in WiFi, allowing homeowners to control the system remotely through a smartphone app. Whether you’re adjusting the temperature or monitoring energy usage, the app makes managing your home’s climate effortless.
Highlights of the Smart App:
- Real-Time Monitoring: View temperature and humidity levels instantly.
- Energy Usage Tracking: Access daily and monthly consumption reports to optimize efficiency.
- Geo-Fencing: Automatically adjust settings based on your location.
Customer Satisfaction: The AirGreen Promise
At AirGreen, we go beyond installations. Our team ensures that every customer understands how to operate their new system and is fully satisfied with the results. For this project in Sainte-Catherine, the family was thrilled with the SHARP ZU1’s performance and the potential energy savings it offers.
Why Work with AirGreen?
- Experienced technicians with a commitment to excellence
- Personalized solutions tailored to your home’s needs
- Transparent pricing with no hidden fees
- Post-installation support to ensure long-term satisfaction
Eco-Friendly and Future-Ready
By choosing the SHARP ZU1, this family not only improved their home’s comfort but also contributed to a greener planet. The use of R-32 refrigerant aligns with Canada’s upcoming energy efficiency standards, making this unit a future-proof investment.
Conclusion
The installation of the SHARP ZU1 18,000 BTU ductless heat pump in Sainte-Catherine showcases AirGreen’s dedication to delivering top-quality HVAC solutions. With its advanced features, eco-friendly design, and outstanding performance, the SHARP ZU1 is the perfect choice for homeowners looking to enhance their comfort while reducing their environmental impact.
For more information on how AirGreen can transform your home’s heating and cooling, contact us today!
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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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).