Installation of a Panasonic Inverter wall-mounted heat pump in Saint-Léonard
AirGreen installed a Panasonic Inverter wall-mounted heat pump in Saint-Léonard. This HVAC project was optimized for comfort, energy efficiency, and grant eligibility.
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A residential project that combines performance and careful integration
At AirGreen , we know that installing a wall-mounted heat pump in Montreal isn't just about installing a unit. Every project involves careful consideration of energy efficiency, occupant comfort, and sustainability. In Saint-Léonard, we recently completed the installation of a Panasonic Inverter heat pump , a unit known for its reliability and power modulation technology, which optimizes energy savings.
Why a Panasonic Inverter heat pump?
The Panasonic Inverter wall-mounted heat pump is distinguished by:
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Its Inverter technology , which continuously adjusts the compressor speed to maintain a stable temperature without excessive electricity consumption.
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Excellent energy performance (above-average seasonal efficiency).
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Adaptability to Quebec's climatic conditions, with reliable operation even in Montreal's typical winter temperatures.
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Japanese manufacturing quality , a guarantee of robustness and longevity.
For a typical townhouse-type residence in Saint-Léonard, this choice proved ideal: it covers heating and air conditioning needs while meeting the efficiency standards required for eligibility for government grant programs .
The particularities of the installation in Saint-Léonard
The outdoor unit was mounted on a raised galvanized steel stand, securely anchored to the concrete of the rear deck. This approach ensures optimal air circulation and protects the equipment from snow and moisture accumulation.
Some notable technical points:
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Refrigeration pipe routing : a discreet white cover protects the pipes and blends in with the red brick facade.
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Electrical connection : the unit was connected to a waterproof junction box installed in the immediate vicinity, ensuring safety and RBQ compliance.
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Condensate drainage : carried out by gravity, avoiding the need for an additional pump and thus reducing future maintenance costs.
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Stability and soundproofing : the supports are equipped with anti-vibration pads to minimize operating noise.
Challenges encountered and solutions applied
As is often the case in Montreal townhouses, the space available on the rear terrace is limited. The AirGreen team therefore:
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Position the unit at a sufficient height to avoid any obstacles and allow easy maintenance.
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Reduces refrigerant line length by planning a direct route, thus optimizing overall system efficiency.
Immediate benefits for occupants
Upon commissioning, the owners noted:
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Stable indoor temperature without sudden variations.
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A significant reduction in noise , thanks to Inverter technology and installation choices.
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Optimized energy bills , with a system that adjusts its power according to actual demand.
AirGreen expertise serving Montrealers
At AirGreen, each installation is custom-designed. We provide:
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A preliminary analysis to determine the BTU power suitable for the accommodation.
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A safe and aesthetic installation , compliant with Quebec electrical and mechanical standards.
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Complete support in applying for available grants (LogisVert, federal and provincial programs).
Thanks to our expertise, Saint-Léonard residents benefit from a high-performance HVAC system, carefully installed and designed to last for years.
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).