Installation of a Tosot LomoPlus UltraHeat Mini Split in Nuns' Island, Montreal
Nestled in Nuns' Island, a tale of modern HVAC marvel unfolds. Join us on a journey of seamless installations, unparalleled efficiency, and the AirGreen promise of perfection.
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 Blend of Efficiency and Elegance
The Setting: Nuns' Island, Montreal
Nestled in the heart of Nuns' Island, Montreal, a recent installation by AirGreen stands as a testament to our commitment to quality, efficiency, and customer satisfaction. This isn't just any installation; it's a story of a homeowner's dream and our team's dedication to turning that dream into a reality.
The Heart of the System: Tosot LomoPlus UltraHeat
The Tosot LomoPlus UltraHeat Mini Split is more than just a machine; it's a marvel of modern HVAC technology. Here's a quick glance at what makes this machine a cut above the rest:
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Cooling Capacity: A robust 18,000 BTU ensures your home remains a haven of cool comfort during those sweltering summer months.
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Heating Capacity: Even at a bone-chilling -30°C, this machine doesn't break a sweat, ensuring your home stays warm and cozy.
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Dimensions: With interior dimensions of 43.3 x 9.8 x 12.8 and exterior dimensions of 38.5 x 16.8 x 31.1, it's compact yet powerful.
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Silent Operation: With a sound pressure level as low as 34 dB(A) for the interior and 59.0 dB(A) for the exterior, it's whisper-quiet.
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Energy Efficiency: Boasting an impressive 24.5 SEER and an Energy Star® certification, it's as green as our name suggests!
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Connectivity: WiFi included, ensuring you're always in control, no matter where you are.
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Warranty: A comprehensive 10-10-10 warranty on the compressor, parts, and labor.
The Installation Journey: More Than Just a Job
Our customer, a recent homeowner in Nuns' Island, was in the midst of renovations. He had a vision: a home that was not only aesthetically pleasing but also boasted a state-of-the-art heating and air conditioning system. But he had conditions. The system had to be silent, efficient, and backed by a solid warranty. And, of course, it had to be easy on the pocket, with eligibility for provincial grants.
Enter AirGreen.
We introduced him to the Tosot LomoPlus UltraHeat. Not only did it tick all his boxes, but it also came with the added bonus of heating capabilities even at -30°C! But our job didn't end at just introducing him to the machine. We took it a step further.
Attention to Detail: The AirGreen Promise
We believe that an installation job is more than just setting up a machine. It's about integrating it seamlessly into the home. Our team ensured that the head unit was installed immaculately, with no unsightly pipes or wires in sight. Every wire, every pipe was carefully threaded through walls, ceilings, and closets, ensuring a clean and professional finish. The result? A thrilled customer and another feather in AirGreen's cap.
Grants and Savings: Quality at an Affordable Price
One of the standout features of the Tosot LomoPlus UltraHeat is its eligibility for grants. Our customer was elated to learn that the machine qualified for a Federal Grant of up to $5,000 and a Provincial Grant of $710. Quality, efficiency, and savings, all rolled into one!
In Conclusion: The AirGreen Difference
Every installation tells a story. A story of a homeowner's aspirations and a team's dedication to fulfilling them. At AirGreen, we don't just install HVAC systems; we build relationships. Relationships built on trust, commitment, and the promise of unparalleled quality.
So, if you're looking for an HVAC solution that's efficient, elegant, and backed by a team of dedicated professionals, look no further. Choose AirGreen.
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.
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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?
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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).