Installation of a Sharp ZU1 Wall-Mounted Heat Pump in Châteauguay
Experience the comfort and efficiency of the Sharp ZU1 heat pump. Our installation in Châteauguay ensures superior air quality and reliable heating down to -27°C.
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.
Cutting-Edge Comfort and Efficiency for Your Home
At AirGreen, we take pride in offering top-tier HVAC services throughout Montréal, Laval, Longueuil, North Shore, and South Shore. Our recent project in Châteauguay involved installing a state-of-the-art Sharp ZU1 24,000 BTU wall-mounted heat pump. This installation is not just another routine task for us; it represents our commitment to bringing eco-friendly, energy-efficient comfort solutions to our clients, ensuring they enjoy the ideal home environment all year round.
Why Choose the Sharp ZU1? A Powerful Solution for Extreme Climates
The Sharp ZU1 mini split heat pump is designed with the harsh Quebec winters in mind. It delivers outstanding performance, boasting a heating capacity down to -27°C, making it one of the most reliable options on the market for regions with extreme cold. Its 24,000 BTU cooling capacity ensures that homeowners stay comfortable during hot summers, while its R-32 refrigerant makes it a more eco-friendly choice, offering a 10% reduction in electrical consumption compared to traditional refrigerants.
LogisVert Grant Eligibility – The Highest Grant for a 24,000 BTU Heat Pump
An exciting aspect of this installation is its eligibility for the $2,688 LogisVert Grant by Hydro-Québec, the highest grant available for any 24,000 BTU mini split system. This grant helps reduce the upfront cost of the installation, making it an attractive choice for homeowners looking to upgrade their HVAC systems.
Installation Details: Precision and Expertise at Every Step
For this particular project in Châteauguay, we followed a meticulous process to ensure optimal performance and customer satisfaction:
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Site Assessment and Preparation: Our team began with a thorough evaluation of the client's home to identify the best location for the indoor and outdoor units. The chosen spot had to meet specific requirements, such as proper airflow, minimal obstructions, and convenient access for maintenance.
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Mounting the Indoor Unit: The indoor unit, measuring 41.42 x 9.80 x 12.44 inches, was strategically positioned in the main living area to ensure even distribution of air across the entire floor. This unit features the Coanda airflow technology, which gently circulates air throughout the room, avoiding direct drafts on the occupants while ensuring a uniform temperature.
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Installing the Outdoor Compressor: The outdoor unit, with dimensions of 33.47 x 13 x 27.94 inches, was securely mounted on an exterior wall. To protect the compressor from corrosion and freezing, it was equipped with an anti-corrosive coating and multiple drainage holes, ensuring reliable operation even in the harshest weather.
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Connecting the Refrigerant Lines and Electrical Wiring: We used high-quality 1/4 - 3/8 inch pipes to connect the indoor and outdoor units, ensuring efficient refrigerant flow. The system operates on a 220V electrical supply, which was carefully integrated into the home's existing electrical system.
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System Testing and Calibration: Once the installation was complete, our technicians conducted a series of tests to ensure the heat pump was functioning at peak efficiency. This included checking the 22.0 SEER efficiency rating, verifying the sound pressure levels (25/49 dB(A) for the interior and 53 dB(A) for the exterior), and confirming WiFi connectivity for seamless remote control via the Sharp app.
Plasmacluster Technology – Breathing Cleaner, Healthier Air
One of the standout features of the Sharp ZU1 heat pump is its innovative Plasmacluster air purification technology. This system releases ions into the air, neutralizing airborne viruses, mold, and allergens, while eliminating odors. Homeowners can enjoy a significant improvement in indoor air quality, as the Plasmacluster technology actively works to create a healthier environment by breaking down airborne contaminants.
How Plasmacluster Technology Works: A Three-Step Process
- Diffusion of Ions: The system releases cations and anions, which are identical to naturally occurring ions, providing long-lasting air purification.
- Attack on Contaminants: The ions interact with airborne particles, neutralizing viruses, mold, and allergens.
- Reconversion to Water: The ions eventually recombine with hydrogen to form harmless water molecules, which are released back into the air.
Coanda Airflow – Enhancing Comfort without Direct Drafts
The Sharp ZU1 is equipped with Coanda airflow technology, which optimizes air distribution by directing it along the walls and ceilings. This prevents uncomfortable drafts and ensures a consistent temperature throughout the room. The long diffuser flap further enhances this effect, allowing air to reach distances of up to 15 meters, ensuring that every corner of the room benefits from the temperature control.
Energy Efficiency and Sustainability – A Step Ahead with R-32 Refrigerant
Switching to the R-32 refrigerant represents a commitment to environmental sustainability. This newer refrigerant type is not only more efficient but also has a lower global warming potential than traditional options like R-22. It helps homeowners reduce their carbon footprint while saving on energy costs.
The Perfect Fit for Multi-Room Comfort
The Multi Space function of the Sharp ZU1 allows for the efficient heating or cooling of multiple rooms. By utilizing a rotating flap that can move up to 180 degrees, the system can distribute air uniformly across different areas of the house. This feature is especially beneficial in homes with multiple floors or open-concept living spaces, ensuring consistent comfort throughout.
Designed for Reliability – Defrosting and Auto Restart Functions
In Quebec's harsh winters, it’s common for heat pumps to face defrosting challenges. The Sharp ZU1 addresses this with its Hot Gas Pipe technology, which circulates hot gas to the condensation pan, preventing ice buildup. Additionally, the auto restart function ensures that the system resumes its settings automatically after a power outage, maintaining the desired indoor climate.
Real-Time Monitoring and Smart Connectivity
Homeowners can manage the Sharp ZU1 through a user-friendly app, which provides real-time monitoring of temperature, humidity, and energy usage. This connectivity allows for the optimization of energy consumption, making the system not only smart but also cost-effective. The motion detection sensors add an extra layer of convenience by notifying users when someone enters or exits a room, allowing them to adjust the settings accordingly.
Conclusion – A Comprehensive Solution for Year-Round Comfort
The installation of the Sharp ZU1 24,000 BTU wall-mounted heat pump in Châteauguay exemplifies our commitment to providing energy-efficient, reliable, and cutting-edge HVAC solutions. The combination of Plasmacluster technology, Coanda airflow control, and R-32 refrigerant makes this system an ideal choice for homeowners seeking comfort and sustainability. At AirGreen, we don't just install HVAC systems; we deliver peace of mind, knowing that our customers can rely on the performance and efficiency of their heat pump in any season.
How it goes, from the first call to the end
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 the unit delivers when it is cold
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.
And 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.
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.
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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?
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Are there grants?
Do I need a permit?
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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).