Installation of a Sharp Eco Inverter wall-mounted heat pump in Rosemont
Installation of a Sharp Eco Inverter wall-mounted heat pump in Rosemont. AirGreen provides expert HVAC service in Montreal and the surrounding area.
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A high-performance HVAC solution on a flat roof in the heart of Montreal
At AirGreen , we recently completed a Sharp Eco Inverter wall-mounted heat pump installation in the Rosemont–La Petite-Patrie area. This project perfectly illustrates our expertise in HVAC installation on flat roofs , a common configuration in Montreal apartment buildings and plexes.
Project background
Our client, a duplex owner, wanted an efficient, discreet, and sustainable heating and cooling solution to improve year-round comfort. The main objective was to reduce dependence on traditional electrical systems while maximizing energy savings, particularly during Montreal's harsh winters.
Details of installed equipment
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Brand: Sharp
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Model: Eco Inverter
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Type: Wall-mounted heat pump (mini-split)
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Technology: Inverter with Ion Plasmacluster (integrated air purification)
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Capacity: suitable for an average-sized home
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Support: metal structure fixed on insulation and treated wooden crosspieces, placed on a flat roof
This combination guarantees a stable and secure installation, capable of withstanding local climatic variations (rain, snow, summer heat).
Key steps of installation
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Flat roof assessment : inspection of waterproofing and choice of a location allowing good air circulation.
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Installation of the support : use of high-density insulating blocks and treated wooden sleepers to prevent any infiltration and distribute the load.
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Refrigerant connections : passage of pipes from the outdoor unit to the interior, respecting the necessary slopes for gravity evacuation of condensates.
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Electrical check : connection to the main electrical panel and protection via dedicated circuit breaker.
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Testing and calibration : gradual start-up, pressure verification, inverter adjustment and energy efficiency validation.
Constraints and solutions provided
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Working height on flat roof : use of a raised support to protect the heat pump from snow and water accumulations.
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Access to the ducts : discreet integration of white capping to protect the refrigerant connections and ensure an aesthetic finish on the interior side.
Results obtained
The customer now benefits from four-season comfort :
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Effective air conditioning during summer heat waves.
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Stable heating even at temperatures around -25°C.
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Purified air thanks to Sharp Plasmacluster technology.
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Greater energy savings compared to its old heating system.
Grants and financial benefits
Sharp Eco Inverter heat pumps are eligible for grant programs available in Quebec, such as LogisVert and Maison plus verte . In this project, we assisted the client with the administrative procedures to reduce the initial cost of the investment.
Why choose AirGreen for your HVAC installation in Montreal?
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Local expertise : accustomed to flat roofs and the particularities of Montreal plexes and duplexes.
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Complete support : from energy assessment to obtaining subsidies.
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Quality of execution : robust, clean and durable installations, adapted to the rigors of the Quebec climate.
Conclusion
This installation of a Sharp Eco Inverter heat pump in Rosemont demonstrates our expertise in demanding urban environments. At AirGreen, we strive to provide our customers with reliable, cost-effective, and environmentally friendly HVAC solutions.
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.
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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).