Installation of a Tosot Lomo 23 Mini Split in Beaconsfield, Montreal
A perfect fit between a door and a window? Challenge accepted! Read about our latest Tosot Lomo 23 installation and see why our clients rave about AirGreen's expertise.
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 Perfect Fit: The Tale of the Tosot Lomo 23 Mini Split Installation in Beaconsfield
The Challenge: Finding the Perfect Spot
Every installation comes with its unique set of challenges. In Beaconsfield, Montreal, we faced a particularly interesting one. Our client had a very specific location in mind for their new heat pump: right between a door and a window. It wasn't just about aesthetics; it was about ensuring the machine would fit seamlessly into their home's design without compromising on efficiency or power.
Why the Tosot Lomo 23 Mini Split?
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Cooling and Heating Capacity: With a robust 18,000 BTU cooling capacity, the Tosot Lomo 23 is no slouch when it comes to keeping a home comfortable. Its heating capacity even extends to -25°C, ensuring warmth during those chilly Montreal winters.
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Whisper-Quiet Operation: At 39/47 dB(A) for the interior and 55.0 dB(A) for the exterior, the Lomo 23 operates at a whisper, ensuring our client's peace and quiet.
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Efficiency and Eco-friendliness: Boasting a 20.0 SEER efficiency rating and Energy Star® certification, the Lomo 23 is both energy-efficient and environmentally friendly. Plus, it uses R-410A gas, a common refrigerant known for its low environmental impact.
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Connectivity and Modern Features: While WiFi is optional, it's a feature that many homeowners appreciate for remote control and monitoring. The AHRI number, 9108747, further attests to its quality and performance.
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Warranty: A 10-10-10 warranty (Compressor - Parts - Labor) underscores the manufacturer's confidence in the product and our installation expertise.
The Installation Process: Precision and Professionalism
Our team at AirGreen understands the intricacies of HVAC installations. The Tosot Lomo 23, with its interior dimensions of 38.2 x 8.8 x 11.8 and exterior dimensions of 37.6 x 12.6 x 27.6, was the perfect fit for the space our client had in mind. But it wasn't just about size. The location between the door and window required precision, ensuring that the unit didn't obstruct either while still being accessible for maintenance.
Grants and Savings: Maximizing Value
One of the standout features of the Tosot Lomo 23 is its eligibility for both federal and provincial grants. Our client was able to benefit from:
- Federal Grant: Between $2,500 and $5,000
- Provincial Grant: $620
These grants not only offset the initial cost of the unit but also underscore its efficiency and eco-friendliness.
A Satisfied Customer: The Ultimate Reward
The end result? A perfectly installed Tosot Lomo 23 Mini Split that met all of our client's requirements: efficiency, quiet operation, aesthetic appeal, and, most importantly, fit. Our client was thrilled with the outcome, praising our team's professionalism, clean installation, and attention to detail. It's feedback like this that drives us at AirGreen to continue delivering top-notch HVAC services across Montreal, Laval, Longueuil, North Shore, and South Shore.
Why Choose AirGreen for Your HVAC Needs?
Our recent installation in Beaconsfield is just one example of our commitment to excellence. Whether it's a simple or complex job, we approach each project with the same level of dedication and expertise. Our extensive gallery showcases our diverse range of installations, each telling a unique story of challenges met and expectations exceeded.
Choose AirGreen for a seamless, professional, and efficient HVAC installation experience.
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?
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).