Installation of a Tosot Lomo 23 Ductless Heat Pump in Sainte-Catherine, South Shore
Ever wondered how a quiet, efficient heat pump installation looks? Check out our latest Tosot Lomo 23 project in Sainte-Catherine—professional, clean, and customer-approved!
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 Integration of Comfort and Efficiency
When the quest for home comfort meets innovative technology, the result is nothing short of exceptional. AirGreen, your trusted HVAC specialists in Montréal, are excited to share a detailed account of our latest project—a straightforward yet finely executed installation of the Tosot Lomo 23 ductless heat pump in the charming locale of Sainte-Catherine on the South Shore.
Project Overview: Simple, Yet Perfectly Executed
In the world of HVAC installations, simplicity does not equate to mediocrity. Our recent project in Sainte-Catherine is a prime example of this philosophy. The installation was carried out in a residential setting, specifically targeting the enhancement of comfort on the second floor of our client's home.
Choosing the Right Model: Tosot Lomo 23
The Tosot Lomo 23, known for its compact design and impressive efficiency, was the chosen model for this task. With a 12,000 BTU capacity, it is perfectly sized for smaller residential spaces, ensuring optimal climate control without overwhelming the area. Here’s a snapshot of the unit’s specifications:
- Energy Efficiency: Boasting a 22.0 SEER rating, the Lomo 23 is designed to keep energy consumption low while maintaining a comfortable indoor environment.
- Sound Levels: With indoor sound pressure levels as low as 29 dB(A), the system operates almost silently, enhancing the serene atmosphere of your home.
- Warranty and Support: The Lomo 23 comes with an extensive 10-year warranty on the compressor, parts, and labor, promising years of reliable service.
Installation Details: Craftsmanship at Its Best
The installation involved positioning the external compressor near the ground level, with careful routing of all necessary piping and electrical connections to the second floor. This standard procedure was executed with an exceptional level of precision and cleanliness, much to the delight of our client.
The exterior unit features a robust heating base to prevent condensation from freezing, ensuring that the unit operates efficiently even during the coldest months. Additionally, the smart defrost system of the Lomo 23 ensures that defrosting occurs only when necessary, thereby optimizing energy use.
Client Satisfaction and Community Engagement
Our commitment to excellence was visibly appreciated by our client, who not only praised the cleanliness and professionalism of the installation but also recommended AirGreen to a neighbor. This led to an on-the-spot free estimate for another potential project, showcasing the power of positive word-of-mouth in building community trust and satisfaction.
Why Choose AirGreen for Your HVAC Needs?
Choosing the right HVAC company is crucial, and at AirGreen, we strive to make that decision straightforward for you. Here’s what sets us apart:
- Expertise and Experience: With years of experience serving the communities of Montréal, Laval, Longueuil, North Shore, and South Shore, we are well-versed in a variety of installation scenarios.
- Customer-Centric Service: We prioritize your comfort and satisfaction above all, ensuring that every installation is a testament to our commitment.
- Quality and Reliability: Our selection of HVAC units, like the Tosot Lomo 23, reflects our commitment to offering products that are not only efficient but also durable.
Concluding Thoughts
If you're looking for a reliable and efficient way to enhance the comfort of your home, consider the Tosot Lomo 23 ductless heat pump. Our recent installation in Sainte-Catherine is a testament to the simplicity and effectiveness of this model. Contact AirGreen today to see how we can elevate the comfort of your living space with professionalism and expertise.
How it goes, from the first call to the end
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.
And 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.
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.
Which type of equipment for your project?
Pick what looks like your need.
Four mistakes we do not make
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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).