Installation of a Sharp ZU1 Wall-Mounted Air Conditioner in Saint-Lambert
Installed the Sharp ZU1 Wall-Mounted Air Conditioner in Saint-Lambert! This 18,000 BTU unit handles extreme weather, features advanced air purification, and offers smart connectivity. Perfect for any home!
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 Seamless Blend of Power and Efficiency: Our Latest HVAC Installation on the South Shore
At AirGreen, we pride ourselves on delivering top-quality HVAC installations across Montreal, Laval, Longueuil, the North Shore, and the South Shore. Recently, we completed an installation of the Sharp ZU1 Wall-Mounted Air Conditioner at a residence in Saint-Lambert on the South Shore. This project wasn’t just another installation for us; it was an opportunity to showcase the efficiency and modern design of the Sharp ZU1, a unit that stands out in terms of performance, energy efficiency, and user-friendly features.
Why the Sharp ZU1 Stands Out
Sharp’s ZU1 model is an excellent choice for homeowners who want a reliable, high-performing air conditioning and heating system that operates even in extreme conditions. With a cooling capacity of 18,000 BTU and the ability to heat effectively even at temperatures as low as -27°C, this unit is a perfect fit for Quebec’s harsh winters and hot summers. Not only does it maintain comfort throughout the year, but it also adheres to the latest energy efficiency standards, making it a smart, eco-friendly option for today’s homeowners.
Details of the Installation
This particular project involved the installation of a wall-mounted 18,000 BTU Sharp ZU1 unit. The indoor unit, with dimensions of 41.42 x 9.80 x 12.44 inches, was placed in a central location to ensure even distribution of air across the home. The outdoor unit, measuring 33.47 x 13 x 27.94 inches, was mounted securely on the homeowner's deck. This setup not only ensures stable operation but also offers easy maintenance access.
The client was particularly pleased to learn that this Sharp ZU1 model qualifies for substantial grants under the LogisVert program, with up to $2,640 available, and an additional 25% bonus if they sign up for Hilo Thermostats. It’s one of the most cost-effective choices for a high-performance system.
The Technology Behind the Unit
One of the standout features of the Sharp ZU1 is its use of Plasmacluster technology, a proprietary air purification system developed by Sharp. This technology actively works to neutralize airborne viruses, bacteria, and allergens, ensuring that the air inside the home is not only comfortable but also healthy. The Coanda Airflow control adds another layer of comfort, ensuring that airflow is directed strategically to maintain consistent temperatures throughout the space without causing drafts or direct cold air on occupants.
Another important detail about this unit is the new R-32 refrigerant. Unlike older refrigerants, R-32 is more efficient and environmentally friendly, offering a lower global warming potential (GWP). This translates to 10% lower energy consumption than systems using traditional refrigerants, making it a greener choice that’s also kinder on the homeowner's energy bills.
Benefits of Choosing the Sharp ZU1
- Energy Efficiency: With a 24.0 SEER efficiency rating, this unit guarantees that you get the most cooling and heating for every kilowatt of electricity used.
- Advanced Air Purification: Sharp’s Plasmacluster technology purifies the air, helping to reduce contaminants like mold, dust, and pet dander, while also neutralizing harmful particles.
- Extreme Cold Performance: The unit continues to perform even in Quebec's freezing temperatures, providing heat in conditions as low as -27°C.
- Whisper Quiet Operation: With a sound pressure level of just 52 dB(A) for the exterior unit and 25-49 dB(A) for the interior, the system operates so quietly that the homeowners hardly notice it’s running.
- Durability: The anticorrosive coating on the outdoor compressor ensures the unit withstands the harsh Quebec winters, while the multiple drainage holes prevent water from freezing in the condensate pan.
- Smart Connectivity: The unit is equipped with WiFi and can be controlled remotely through Sharp’s mobile app. This gives the homeowner the ability to adjust temperatures, monitor energy consumption, and even receive notifications if there’s no movement in the room for a prolonged period.
The Installation Process
Our team arrived at the Saint-Lambert residence in the early morning to ensure a smooth installation process that would minimize disruption to the homeowner's day. We started by assessing the best placement for both the indoor and outdoor units, focusing on maximizing efficiency and ensuring even air distribution throughout the home.
The outdoor unit was mounted on a sturdy platform on the deck, ensuring that it was both stable and aesthetically pleasing. It was positioned in a way that allowed easy access for future maintenance, and far enough from the living spaces to minimize any noise disturbance.
The indoor unit was installed centrally in the living area to ensure optimal cooling and heating. Our team worked efficiently to run the necessary piping, making sure everything was sealed properly to prevent leaks and ensure the system operates at its full capacity.
After the installation, we conducted a thorough test to ensure that the unit was functioning perfectly and that the homeowner was comfortable with its operation. We walked the client through the features of the Sharp ZU1, showing them how to adjust the settings using both the physical remote and the mobile app. The client was particularly impressed by the ability to control the system remotely, which offers peace of mind when they’re away from home.
Why This Installation Was Unique
One of the unique aspects of this installation was the specific challenges posed by the Saint-Lambert home. Due to the positioning of the deck and the layout of the interior rooms, our team had to carefully consider the airflow to ensure the entire home would benefit from the system’s heating and cooling capabilities. The Coanda airflow control was particularly useful in this scenario, as it allowed us to direct the airflow in a way that guaranteed consistent temperatures in every room without creating uncomfortable drafts.
The homeowners were also thrilled to learn about the energy-saving features of the unit. With the sharp increases in energy costs, knowing that the Sharp ZU1 uses inverter technology to maintain temperature with minimal energy usage was a huge plus. The unit doesn’t constantly turn on and off but instead adjusts the airflow and compressor speed to maintain the desired temperature efficiently. This feature, combined with the use of R-32 refrigerant, ensures that the home stays comfortable without breaking the bank on energy bills.
Final Thoughts on the Installation
At AirGreen, we believe in providing more than just HVAC installations – we deliver peace of mind. The Sharp ZU1 Wall-Mounted Air Conditioner is not only a powerhouse in terms of performance, but it’s also designed to create a healthier, more comfortable living environment. With the Plasmacluster technology purifying the air and the Coanda airflow control ensuring even temperatures, this unit truly enhances the quality of life for the homeowners.
As with all our projects, we were committed to ensuring that this installation met the highest standards of excellence. The homeowners now have a system that is reliable, efficient, and designed to withstand even the harshest Quebec winters. We’re confident that they will enjoy the benefits of their new Sharp ZU1 for many years to come.
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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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).