Installation of a Tosot LomoPlus UltraHeat Wall-Mounted Heat Pump in Deux-Montagnes
See how we installed a Tosot LomoPlus UltraHeat heat pump in Deux-Montagnes, achieving top efficiency and comfort—even in extreme temperatures down to -30°C!
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.
The Heart of Home Comfort: A Tosot LomoPlus UltraHeat Installation Story
Why This Installation is a Game Changer for Our Client in Deux-Montagnes
In the picturesque city of Deux-Montagnes, where winters can be biting and summers humid, ensuring year-round comfort is more than just a luxury—it’s a necessity. When our client reached out to us, their goal was clear: optimal heating and cooling efficiency, paired with modern, sleek aesthetics. That’s where the Tosot LomoPlus UltraHeat 12,000 BTU wall-mounted heat pump came into play.
A Heat Pump Designed for Canada’s Harsh Climate
What sets the Tosot LomoPlus UltraHeat apart? This isn’t just another heat pump. It’s engineered specifically to tackle Canadian winters head-on, maintaining 80% heating capacity at temperatures as cold as -30°C. Yes, you read that right—minus thirty degrees Celsius. With this powerhouse, our Deux-Montagnes client can cozy up indoors even during brutal cold snaps, confident their heating won’t falter.
Key Features of the Tosot LomoPlus UltraHeat
- Energy Efficiency: At a whopping 30.5 SEER, this model is a champion of efficiency, drastically cutting down energy costs.
- Quiet Operation: With interior sound pressure levels ranging from a whisper-quiet 22 dB(A) to 49 dB(A), you’ll barely know it’s there.
- Smart Features: Integrated WiFi connectivity allows the user to control the temperature from anywhere, making this unit perfect for modern, tech-savvy homeowners.
- Versatile Performance: This machine does more than just heat. It provides dependable cooling power during those sticky summer months, ensuring comfort all year round.
Installation Details: Making It Happen
The process wasn’t as straightforward as simply mounting the unit on the wall and calling it a day. Our team at AirGreen prides itself on precision and detail. We started by mapping out the best possible location for the unit. The interior dimensions—39.2 x 8.8 x 11.8 inches—fit seamlessly into the client's desired space, providing optimal air distribution. Our technicians ensured that every step adhered to our rigorous quality standards.
Exterior Installation: The outdoor unit, sized at 35.3 x 14.8 x 23.4 inches, required a sturdy base and precise positioning to maximize efficiency and minimize noise disruption. Given its sound pressure level of 53 dB(A), we aimed to place it in a location that would be unobtrusive to both the homeowner and neighbors.
Navigating Installation Challenges
Even the best-planned installations can come with their hurdles. In this case, we had to consider the unique layout of the property and potential obstacles, like nearby windows and the proximity of electrical wiring. Using high-quality R-410A refrigerant gas and precision piping of 1/4 - 1/2 inch, our expert team ensured flawless connectivity, preventing leaks and maximizing efficiency.
The Grant Advantage: Saving Money with Hydro-Québec’s LogisVert
We also informed our client about the $972 LogisVert Grant by Hydro-Québec, making this an even sweeter deal. The Tosot LomoPlus UltraHeat not only promises comfort but also pays off in energy savings and rebates. Our client was thrilled at the opportunity to make an eco-friendly choice that was also wallet-friendly.
Beyond Installation: Features Worth Celebrating
Built-In Memory and Self-Diagnosis
Ever had to reset your devices after a power outage? Not with this heat pump. The memory feature ensures it restarts with the last used settings, saving the user from the hassle of reprogramming. Plus, the self-diagnosis system means less time troubleshooting and more time enjoying cozy indoor temps.
Intelligent Defrost System
Canadian winters often come with snow and ice buildup, a significant concern for any outdoor unit. This model’s microprocessor-controlled defrost only activates when absolutely necessary, optimizing energy use and ensuring longevity.
Compact, Yet Mighty
We’re continually amazed by the compact design of the LomoPlus UltraHeat. Despite its smaller footprint, it delivers robust performance. The four-way motorized louvers adjust automatically to distribute air evenly, eliminating hot or cold spots within the room.
Unmatched Durability and Warranty Options
When we say the Tosot LomoPlus UltraHeat is built to last, we mean it. It comes with a 10-year parts warranty, and we offer an extended 10-year labor warranty for ultimate peace of mind. Our clients can rest easy, knowing they’re investing in a system that won’t let them down when they need it most.
Environmentally Conscious Technology
This machine runs on eco-friendly R-410A refrigerant, aligning with modern environmental standards and ensuring lower impact on the planet. Plus, the efficient operation translates to reduced greenhouse gas emissions.
Wrapping Up: Why Choose AirGreen for Your HVAC Needs?
At AirGreen, we don’t just install machines; we build relationships based on trust, expertise, and exceptional service. Our team is meticulous, ensuring each step of the installation process is executed to perfection. We believe every home deserves a high-performance, energy-efficient heat pump tailored to its unique needs.
For our client in Deux-Montagnes, this installation was about more than just upgrading to a high-tech system. It was about investing in year-round comfort, eco-conscious living, and long-term cost savings.
Thinking of Upgrading Your System?
If you’re considering a similar project, let us bring our expertise to your home. Contact AirGreen today, and let’s discuss how we can transform your indoor climate.
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).