Installation of a Tosot Lomo 23 Wall-Mounted Heat Pump in Sainte-Marthe-sur-le-Lac
Dive into a tale of seamless installation & unmatched comfort with the Tosot Lomo 23 in Sainte-Marthe-sur-le-Lac. AirGreen - where efficiency meets tranquility!
Take a tour of the installation
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.
A Seamless Symphony of Efficiency and Comfort
Location Spotlight: Sainte-Marthe-sur-le-Lac
Nestled in the serene North Shore of Montreal, Sainte-Marthe-sur-le-Lac is a locale that demands nothing but the best when it comes to comfort and efficiency. Our recent installation in this picturesque town not only met but exceeded these expectations, providing a solution that is as efficient as it is whisper-quiet.
Tosot Lomo 23: A Closer Look
- Cooling Capacity: With a robust 12,000 BTU, the Tosot Lomo 23 offers optimal cooling, making it a perfect companion for the warm, balmy summers of Sainte-Marthe-sur-le-Lac.
- Heating Capacity: Designed to function efficiently even at -25°C, this machine ensures you stay warm and cozy during the chilly winters.
- Efficiency: Boasting a 22.0 SEER efficiency, the Lomo 23 is a paragon of energy conservation, ensuring you enjoy comfort without the guilt of a high energy bill.
- Whisper-Quiet Operation: With an interior sound pressure level ranging between 29 to 45 dB(A), the Lomo 23 operates silently, providing comfort that is seen, felt, but never heard.
Installation Highlights
Our team at AirGreen executed a textbook wall-to-wall installation with the Tosot Lomo 23. The head unit of the heat pump was meticulously placed on one side of the wall, with the compressor unit installed on the opposite side. This strategic placement not only facilitates efficient operation but also ensures that the aesthetic integrity of your living space is maintained.
Why the Tosot Lomo 23?
- Federal and Provincial Grants: The Lomo 23 is eligible for a substantial Federal Grant ranging from $2,500 to $5,000 and a Provincial Grant of $385. This financial incentive makes it an attractive option for homeowners looking for quality at an affordable price.
- Extended Warranty: With options for extended warranty available, you can enjoy peace of mind knowing that your investment is protected for years to come.
- WiFi Capability: With optional WiFi features, controlling the climate of your home is at your fingertips, whether you're nestled on your couch or away from home.
Customer Satisfaction: Our True North
Our customer in Sainte-Marthe-sur-le-Lac was overjoyed with the installation. The Tosot Lomo 23 was not just a machine; it was an addition to his living space, a silent companion that worked tirelessly to provide comfort for his family. The living room, a space of congregation and celebration, was now also a haven of comfort, thanks to the Lomo 23.
AirGreen: Your Partner in Comfort
At AirGreen, we don’t just install HVAC units; we provide solutions that are tailored to your needs. With every installation, we bring to the table a commitment to quality, efficiency, and customer satisfaction. Our installation at Sainte-Marthe-sur-le-Lac is a testament to this commitment, a narrative of comfort and efficiency seamlessly woven together to create an experience that is truly unparalleled.
The big day, step by step
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 would it look like at your place?
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.
Four mistakes we do not make
Flip each card to see what we do instead.
Your own project, step by step
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.
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.
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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Every house has its constraints. We see them before we install.
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).