Installation of a Sharp wall-mounted heat pump in Rosemont–La Petite-Patrie
In Rosemont–La Petite-Patrie, our AirGreen team installed a Sharp ZU1 ECO Inverter wall-mounted heat pump that seamlessly integrated into a brick facade. This energy-efficient, quiet system, perfectly suited to Montreal winters, offers both comfort and energy savings for the homeowner.
- City
- Region
- Equipment
- Brand
- Challenges
- Published
The job on one screen

The article, chapter by chapter
In Rosemont–La Petite-Patrie, a homeowner wanted to upgrade their air conditioning system while preparing for Montreal's harsh winters. They chose our team to install aSharp wall-mounted heat pump , an energy-efficient system perfectly suited to the typical plexes in the area.
A Sharp wall-mounted system for four-season comfort
For this project, we installed a Sharp ZU1 12,000 BTU wall-mounted heat pump , a unit from the ECO Inverter range, ideal for a medium-sized home:
-
Efficient heating during Quebec's cold weather;
-
Stable and quiet air conditioning in summer;
-
Inverter technology to adjust power according to actual demand;
-
Excellent energy efficiency, reducing electricity bills.
Inside, a discreet wall-mounted unit distributes air throughout the main living area. Outside, the Sharp compressor completes the installation while taking up minimal ground space.
A typical Rosemont facade, a careful integration
The house features a red brick facade with a pink stucco base , very representative of the buildings in Rosemont–La Petite-Patrie. The challenge was twofold:
-
Respect the aesthetics of the facade
-
Ensure a durable and easily maintainable installation
So we have:
-
The Sharp compressor was fixed on galvanized wall brackets , above ground level, to protect it from snow, ice and splashes;
-
Aligned the exterior unit with the architectural elements to maintain a visually harmonious facade;
-
Dark brown finishing trunking was used to conceal the passage of the refrigeration lines and the drain, following a vertical rise and then a horizontal return along the brick wall.
The result: a clean, straight and discreet installation, perfectly integrated into the existing masonry.
Technical details of the outdoor installation
During the installation of the Sharp wall-mounted heat pump, our team took several essential points into account:
-
Clearance height : the unit is positioned high enough to remain clear of snow accumulation and to facilitate snow removal from the pedestrian area in front of the house.
-
Structural fixing : the supports are anchored securely in the structure behind the facing, not just in the plaster, guaranteeing the stability of the whole even in case of strong wind or vibration.
-
Condensation drain management : the drain is oriented to avoid runoff onto sidewalks and to prevent ice formation in winter.
-
Clearances around the unit : we have respected the distances recommended by Sharp to ensure good air circulation and optimal performance.
-
Routing of connections : refrigeration pipes and electrical cables are protected by sealed covers, which reduces the risk of mechanical damage and extends their lifespan.
Indoor comfort and energy savings
Thanks to this Sharp wall-mounted heat pump:
-
Occupants benefit from immediate comfort , with rapid temperature rise in winter and efficient air conditioning in summer;
-
The inverter compressor continuously adapts its power, which reduces on/off cycles and increases the lifespan of the device;
-
The system consumes much less than a traditional electric auxiliary heater, which helps to reduce operating costs while decreasing the carbon footprint of the home.
In a neighbourhood like Rosemont–La Petite-Patrie , where several buildings are attached, the low noise level of the Sharp compressor is a significant advantage for the neighbours.
An installation designed for Montreal winters
Montreal winters demand high-performance equipment and uncompromising installation. For this project, we have:
-
Configured the Sharp heat pump to optimize heating mode in cold weather ;
-
Checked the compressor defrosting and protection settings;
-
Advised the client on the minimum maintenance to be carried out: clear the snow around the unit, ensure that the gutters remain clear and do not obstruct the air outlets.
This approach allows the homeowner to enjoy reliable heating even when the mercury drops, while keeping energy bills under control.
Added value for the property
In addition to comfort, installing this Sharp ZU1 wall-mounted heat pump adds value to the property:
-
Recent, modern and energy-efficient system;
-
An important advantage when selling or renting;
-
Upgrading the building to meet current energy performance standards.
For a plex in Rosemont–La Petite-Patrie, it is a particularly attractive investment, both for the occupant and for the owner.
Why choose AirGreen for your Sharp heat pump?
At AirGreen, we specialize in wall-mounted heat pump systems for the Greater Montreal area . For each installation, we:
-
Let's analyze the reality of the building (structure, aesthetics, access, noise, neighborhood);
-
We recommend the BTU capacity and model best suited to your needs;
-
Let's create clean, straight and durable installations, like on this facade in Rosemont–La Petite-Patrie;
-
We offer comprehensive support for energy efficiency grants and programs where applicable;
-
We remain available for maintenance and after-sales service.
If you live in Montreal, Laval, the North Shore or the South Shore and wish to install a Sharp wall-mounted heat pump or another heating and air conditioning system, our team will be happy to advise you and offer you a customized solution.
The job tools
Two quick checks with real numbers: what heat costs, and what your current heaters add up to in BTU/h.
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.
More jobs to see, near you
By town, by equipment or by region: browse more than 4,700 published projects.
Each dot: a town where AirGreen has published projects. The glowing dot: this job.
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).
