Installation of a Sharp Eco Inverter (Plasmacluster) — wall-mounted heat pump — in Griffintown (Le Sud-Ouest, Montreal)
HVAC installation in Griffintown: Sharp Eco Inverter wall-mounted heat pump on a flat roof with aluminum support and anti-vibration pads, controlled drainage and maintenance access. AirGreen serves Montreal, Laval, Longueuil, North Shore, South Shore .
- City
- Region
- Equipment
- Brand
- Challenges
- Published
The job on one screen
The article, chapter by chapter
Optimize four-season comfort on a flat roof, without noise or vibrations
At AirGreen , we are regularly called upon for HVAC installations on flat roofs in dense urban areas. In Griffintown, we installed a Sharp Eco Inverter (Plasmacluster) wall-mounted heat pump mounted on a raised support, designed for efficient, discreet and sustainable operation in Montreal's climate.
Why this choice for Griffintown
• Urban density and co-ownerships: requirement for low noise, clean line crossings and meticulous vibration management.
• White elastomeric roof and terrace: protection of the membrane, safe circulation and essential service clearances.
• Need for rapid comfort: inverter technology provides fine temperature control, from spring to extreme cold.
Technical configuration of the installation
• Equipment type: Sharp wall-mounted heat pump (mini-split) — Eco Inverter outdoor unit with Plasmacluster treatment.
• Installation: flat roof, on four-legged aluminum crosspiece , equipped with anti-vibration pads and placed on membrane protection slabs .
• Vibration and noise management: mechanical decoupling of the support, torque tightening and laser level control to preserve the stability of the compressor and the comfort of neighbors.
• Refrigerated and electrical path: isolated refrigerated connections, compact path with UV capping; power supply on dedicated circuit compliant with RBQ/Code requirements; waterproof external circuit breaker.
• Condensates: gravity drainage prioritized; if insufficient slope, float lift pump with accessible maintenance tank.
• Winter clearances: raised to avoid snow accumulation, rear and side clearance respected to ensure air flow and limit frost.
• Maintenance: easy access to the condenser front, marked service path and free space for defrosting/snow removal.
Measured results and customer benefits
• Fast and consistent comfort: continuous modulation of the inverter compressor for minimal temperature variations.
• Acoustic discretion: decoupled support + anti-vibration pads = reduced transmission to structures, ideal for co-ownership.
• Roof durability: non-slip technical tiles protecting the membrane, preventing punching and migration.
• Easy service: clear maintenance access, connections and circuit breakers identified for rapid interventions.
Specific points of attention for flat roofs in Montreal
• Wind and frost: anchoring/low profile and wind constraints taken into account; clearances respected to maintain a constant air flow during freezing periods.
• Water management: trajectories outside drains, no obstruction of drains.
• Snow: sufficient elevation ; if exposed area, addition of a snow guard or deflector recommended.
• Neighborhood: orientation of air discharge and location far from guardrails used on terraces.
What we check before installing
-
Electrical compatibility (gauge, circuit breaker, cable gauge, grounding).
-
Length and elevation of connections (target: short route < 10 m when the architecture allows it).
-
Condensate drainage (gravity preferred, secure lifting pump if necessary).
-
Service clearances (access to filters, fans, panels).
-
Defrost cycles in cold climates and positioning the unit to limit recirculation of cold air.
AirGreen Advice for Condominiums and Mixed-Use Buildings
• Obtain the agreement of the union: implementation plan with loads, clearances and electrical diagram.
• Choose an anti-corrosion aluminum support and pads suitable for dynamic load.
• Provide an external circuit breaker and clear identification of circuits for service.
• Document the drainage slope and protect the membrane under each support.
• Plan biannual maintenance (spring/fall): cleaning batteries, checking clamps and circuit vacuum.
Indoor air quality: the Plasmacluster advantage
Sharp's Plasmacluster technology acts on certain particles and odors, improving the feeling of indoor freshness when combined with rigorous filter and evaporator maintenance. The result: superior perceived comfort, particularly in urban condos.
Energy performance and subsidies
Wall-mounted heat pumps with inverter technology reduce operating costs compared to electric convectors and improve the overall SEER/HSPF of the home. Depending on the configuration and the exact model, assistance programs may be available in Quebec. We verify current eligibility (recent R-32/R-454B models, low operating temperatures, certifications) and support our customers in Montreal, Laval, Longueuil, North Shore and South Shore .
Maintenance and longevity: our protocol
• Quarterly visual inspection: snow/ice clearance, cleanliness of grids, condition of supports.
• Seasonal cleaning: internal filters, fins of the external unit, checking the condensate tray.
• Annual checks: electrical tightening, insulation test, vibration monitoring , pressure/temperature reading, updating of capping seals.
• Good user practices: maintain a clearance of 60–90 cm around the condenser, never cover the device, avoid accumulations of leaves and dust.
What makes the AirGreen difference
• Local HVAC expertise: in-depth knowledge of Montreal flat roof constraints and co-ownership requirements.
• Clean finishes: aligned paths, UV capping, circuit identification, adapted pads and precise leveling.
• Complete support: choice of BTU per room, load study, development of the implementation plan, documents for the union, instrumented commissioning, post-installation monitoring.
Express fair (useful for condominiums)
• Noise: yes, installation on pads and isolated support significantly attenuates transmission.
• Snow: the elevation and orientation of the air discharge reduce the risk of clogging.
• Maintenance: accessible without disturbing occupants; service path marked on slab.
• Lifespan: With maintenance, a properly installed wall-mounted heat pump can provide more than a decade of reliable service.
Ready for your project in Griffintown and beyond
Whether you are in Montreal , Laval , Longueuil , on the North Shore or the South Shore , we size and install your HVAC system with the same requirements: real comfort, silence, efficiency and respect for buildings. Let's talk about your configuration (surface area, insulation, orientation) and choose the BTU and the Sharp or equivalent range that will deliver the best performance in your home.
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).