Installation of a SHARP ZU1 18,000 BTU Wall-Mounted Heat Pump in Saint-Jean-sur-Richelieu
AirGreen installed a SHARP ZU1 18,000 BTU wall-mounted heat pump in Saint-Jean-sur-Richelieu. A quiet, energy-efficient, and effective solution—perfect for a residential kitchen.
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 high-performance and stylish solution to optimize comfort in a residential kitchen
At AirGreen, our mission is clear: to provide customized HVAC installations that are durable and adapted to Québec’s climate. Recently, our team had the pleasure of completing a new installation of a SHARP ZU1 18,000 BTU wall-mounted heat pump in a residence located in Saint-Jean-sur-Richelieu, in the Montérégie region. This project, carried out in a residential kitchen, perfectly illustrates our attention to detail, professionalism, and ability to seamlessly integrate heating and cooling solutions into functional living spaces.
Why choose the SHARP ZU1 Series?
The SHARP ZU1 heat pump, operating with the eco-friendly R-32 refrigerant, is an excellent choice for Québec’s climate. This specific 18,000 BTU model provides stable performance even in temperatures as low as -27°C, making it an ideal solution for the harsh winters of the South Shore.
Key technical features:
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Heating capacity: up to 21,600 BTU/h
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Cooling capacity: up to 18,000 BTU/h
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Operating temperature range: from -27°C to 46°C
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SEER: 24, ensuring optimal energy efficiency in summer
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HSPF: up to 13, guaranteeing high performance in winter
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Integrated Plasmacluster Technology for active air purification
The Plasmacluster technology is exclusive to SHARP. It emits positive and negative ions capable of neutralizing mold, viruses, bacteria, and airborne allergens, significantly improving indoor air quality.
Context and specific features of the installation in Saint-Jean-sur-Richelieu
The project involved installing the indoor unit directly in the client’s kitchen, a strategic and often complex area when it comes to airflow, heat, and humidity.
Technical challenges encountered:
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Limited space between the top cabinets and the ceiling crown molding
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Need for aesthetic discretion and harmonious integration with the existing decor
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Limited wall access for unit placement and piping to the outdoor unit
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Preservation of the workspace (countertop and sink area)
Our approach:
Our certified technicians took the time to thoroughly analyze the layout of the room. The SHARP wall unit was carefully installed just a few centimeters from the ceiling, perfectly aligned with the cabinets, ensuring optimal airflow circulation without interfering with the kitchen’s functional elements.
The installation was completed in a single day, including:
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Discreet drilling for refrigerant lines and wiring
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Setup of the condensate drain hose
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Electrical hookup with a dedicated 25 A breaker
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Full system pressure and functionality check
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Initial settings configuration and user demonstration
Immediate benefits for the client
From the very first moments of operation, the SHARP ZU1 heat pump provided even air distribution throughout the kitchen thanks to its manual horizontal and automatic vertical airflow direction. The large blower flap allows air to reach up to 50 feet, ensuring quick and consistent thermal comfort.
What the client particularly appreciated:
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The quiet operation of the unit (only 28 to 49 dB)
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The sleek, compact design of the indoor unit (41” wide)
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The simple control via an intuitive remote
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The improved air quality thanks to Plasmacluster technology
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The reduced energy consumption, notably due to the high-performance inverter
An installation eligible for government grants
Thanks to its exceptional energy efficiency, the SHARP ZU1 18,000 BTU heat pump is potentially eligible for LogisVert grants from Hydro-Québec, which can reach up to $1,704. Our team informed the client of all the necessary steps to apply to the program and obtain this financial support.
Why choose AirGreen for your heat pump project?
With every project, we deliver:
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In-depth technical HVAC expertise
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Comprehensive support before, during, and after installation
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Clean, safe, and aesthetic installations
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Personalized advice tailored to your space and needs
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A friendly and accessible after-sales service
We serve the entire South Shore, as well as Greater Montréal, including Montréal, Laval, Longueuil, Brossard, Saint-Bruno, and Saint-Jean-sur-Richelieu, offering top-tier, durable, and eco-friendly HVAC solutions.
Key takeaways
The SHARP ZU1 18,000 BTU wall-mounted heat pump installed by AirGreen in Saint-Jean-sur-Richelieu is far more than just a heating and cooling unit. It’s a complete comfort and air quality system, perfectly suited to Québec conditions, combining performance, energy efficiency, and active air purification.
Professional advice from AirGreen
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Choose a power output adapted to your room to avoid excess consumption or reduced effectiveness.
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Think about the strategic placement of the indoor unit to ensure even air distribution.
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Schedule annual HVAC maintenance to preserve energy efficiency and air quality.
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Look into available grants before you invest—they can significantly reduce your total installation cost.
Thinking about installing a SHARP wall-mounted heat pump?
Contact us today for a free quote, a personalized thermal evaluation, and guidance on available grants. At AirGreen, your comfort is our priority.
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.
Which type of equipment for your project?
Pick what looks like your need.
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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?
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).