Installation of a Sharp wall-mounted heat pump in Chomedey (Laval)
AirGreen installs a Sharp wall-mounted heat pump in Chomedey: discreet refrigeration path in white capping, wall brackets, gravity evacuation and clean finishes. Greater Montreal service: Montreal, Laval, Longueuil, North Shore, South Shore .
- City
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- Challenges
- Published
The job on one screen
The article, chapter by chapter
A clean, quiet installation designed for our winters — by AirGreen
Customer context and objective
At AirGreen , we were commissioned in Chomedey (Laval) to modernize the comfort of a single-family home with a Sharp wall-mounted heat pump . The request: a discreet system, efficient in air conditioning in the summer and efficient in intermediate heating in the spring/fall, with a durable and aesthetic HVAC installation .
Equipment Overview
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Brand: Sharp ( Eco Inverter and Plasmacluster technology for better air quality).
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Type: mini-split wall-mounted heat pump (outdoor condenser + indoor head).
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Refrigerant: recent generation compliant with current requirements (installation ready for applicable efficiency programs).
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Noise and efficiency: modulating operation, ideal for reducing on/off cycles and consumption.
Desired result: stable comfort, controlled energy bills and optimized air quality thanks to Plasmacluster ionization.
What we delivered
Neat and perfectly aligned refrigeration path
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White capping (technical chute) vertical for approximately 2.5 to 3 m , then horizontal section to neatly reach the entry point.
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Single perforation with vapor barrier and continuous insulation of refrigerant connections to limit losses and condensation.
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Communication and power cabling grouped in the same trunking for a clean appearance and easy maintenance.
Outdoor installation designed for the Quebec winter
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Sharp condenser installed on sturdy wall brackets , clear of the ground to prevent snow accumulation and promote defrost flow.
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Anti-vibration feet and level balancing to reduce noise transmission into masonry.
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Side and rear clearances respected to ensure optimal airflow during defrost cycles.
Condensate management
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Gravity drainage to the outside (no pump required), reducing maintenance and the risk of additional breakdowns.
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Controlled slope and exit protected from passages to avoid icicles in winter.
Architectural integration
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Harmonization of the white capping with the pale brick of the facade: rectilinear lines, minimal visible stainless steel screws, clean finishes to the right of the covers.
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Installation height chosen to combine aesthetics, silence and service accessibility.
Construction site challenges and AirGreen solutions
1) Respect for clear masonry
The pale brick facade required a clean, straight and unblemished drainpipe.
Our approach: laser tracing, low-impact drilling, dust protection and careful sealing at the finish.
2) Snow/icing clearance
The ground receives accumulations at the bottom of the wall.
Our answer: brackets at calculated height, compliant rear clearance and fan orientation to evacuate hot air during defrosting without nuisance.
3) Mixed vertical + horizontal path
The inner head was located at the wall return.
Solution: a short, well-fixed horizontal section to reach the most discreet entry point and limit the refrigerated length.
Why this Sharp heat pump ?
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Inverter modulation : adjusts power as needed, limits overconsumption and increases continuous comfort.
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Air quality : Plasmacluster ionization reduces odors and particles indoors.
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Reliability : proven components, clear service access, parts and support available in Quebec.
What this changes on a daily basis
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Immediate comfort : gentle temperature rise, uniform air conditioning in summer.
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Silence : controlled vibrations, exterior noise level reduced by installation on brackets and alignment of the blades during defrosting.
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Savings : modulation + good sealing of the route reduce consumption compared to an all-or-nothing device.
Good HVAC Maintenance Practices
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Clean the internal filters every 1–2 months during peak periods.
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Gently rinse the outdoor unit in spring; clear leaves and snow around it.
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Have annual HVAC maintenance carried out: pressure/temperature check, electrical tightening, defrost test and leak test.
Grants and Eligibility
Depending on the configuration (seasonal yields, nominal temperatures), programs may apply to Greater Montreal ( Montreal , Laval , Longueuil , North Shore , South Shore ). We support our clients to validate eligibility and optimize the file.
What AirGreen brings in addition
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Route design : we think about the line before the drill—less length, less waste, better aesthetics.
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Finishes : aligned capping, stainless steel fixings, clean seals, service labeling.
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Service : local team, parts available and technicians trained in recent generations R-32 / R-454B .
Tips before choosing
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Prioritize an installer who is proficient in defrosting : clearances and condensate drainage are essential.
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Validate the planned refrigeration length ; beyond certain limits, refrigerant top-up and loss calculations are required.
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Require a documented commissioning test (high vacuum, leak test, readings).
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Think about maintenance from the moment you buy: filter access, card access, service release.
Areas served
We install and maintain heat pumps throughout Greater Montreal: Montreal , Laval , Longueuil , North Shore and South Shore . For a perfect result like in Chomedey , contact us - we take care of comfort, paperwork and technical details.
Want a clean and durable installation? At AirGreen, we design discreet pathways, adapted to your facade and our winters, with meticulous commissioning and serious monitoring throughout the year.
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).