Installation of a Tosot LomoPlus UltraHeat DoubleZone Heat Pump in Pierrefonds-Roxboro, Montreal
See how AirGreen flawlessly integrates the advanced Tosot DoubleZone Heat Pump into a Montreal home, ensuring optimal comfort and style!
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 Marvel of Modern Engineering: How Our Installation Transcended Expectations
When it comes to heating and cooling solutions, the Tosot LomoPlus UltraHeat DoubleZone Heat Pump stands out as a beacon of innovation and efficiency. Recently, our team at AirGreen had the pleasure of installing this state-of-the-art system in the serene neighborhood of Pierrefonds-Roxboro, Montreal. This project not only showcased our dedication to superior craftsmanship but also highlighted our commitment to customer satisfaction and smart, aesthetic integration into home environments.
The Challenge and Our Innovative Solution
The installation posed unique challenges that tested our technical expertise and creative problem-solving skills. The main hurdle was the customer's request to place the second indoor unit on the opposite side of the house, far from the external unit. This required a clever routing of pipes and electrical wiring through walls and ceilings to maintain the home's aesthetic while ensuring optimal functionality.
Strategic Installation for Optimal Performance
Our approach was meticulous and focused on minimizing the impact on the house's structure and appearance:
- Near Unit Installation: The first inside unit installation was straightforward, positioned close to the 18,000 BTU compressor, ensuring efficient operation and easy access.
- Complex Routing for the Second Unit: The second unit installation involved extensive planning. We strategically placed conduits to traverse multiple rooms without disrupting the home’s interior design. The result was a seamless blend of technology and home décor, much to the customer's delight.
Technical Specifications and Features
The Tosot LomoPlus UltraHeat model is not just any heat pump; it's a testament to advanced engineering tailored to the harsh Canadian climate:
- Energy Efficiency: With a SEER rating of 23.0, this heat pump is among the most energy-efficient on the market, bearing the Energy Star® certification.
- Wi-Fi Connectivity: Control your home’s temperature from anywhere using a smartphone, a feature that combines convenience with technology.
- Extended Warranty: The unit comes with an impressive 10-year warranty for compressor, parts, and labor, ensuring peace of mind for the long term.
- UltraQuiet Operation: At a sound pressure level of 58 dB(A), it operates more quietly than most refrigerators.
Benefits of the DoubleZone Feature
The DoubleZone capability is particularly advantageous for households needing different temperature zones:
- Dual Comfort Zones: Allows for different temperature settings in separate areas, maximizing comfort for all family members.
- Energy Savings: Independent control of each zone helps reduce unnecessary heating or cooling, leading to lower energy bills.
Customer Satisfaction: Beyond Expectations
Our client's reaction to the completed installation was overwhelmingly positive. They were particularly impressed with how the team managed to overcome architectural challenges without compromising the interior aesthetics or operational efficiency of the system. The client praised the discreet and strategic placement of units and the careful handling of the home’s structure.
Why Choose AirGreen for Your HVAC Needs?
Choosing AirGreen means partnering with a team that stands firmly behind its work with a deep understanding of both product and customer needs. We don’t just install systems; we integrate them thoughtfully into your living spaces while ensuring they perform at their peak. Our installations are not just about placing a system; they're about enhancing comfort, preserving aesthetics, and ensuring long-term satisfaction.
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).