Installation of a Tosot LomoPlus UltraHeat DoubleZone Heat Pump in Dollard-des-Ormeaux
Experience ultimate comfort with our Tosot LomoPlus UltraHeat installation in Dollard-des-Ormeaux. Ready for -30°C cold and summer heat with style and efficiency.
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.
Comfort and Reliability for All Seasons
In the heart of Dollard-des-Ormeaux, we had the pleasure of installing a Tosot LomoPlus UltraHeat DoubleZone Heat Pump for a family looking to enhance their comfort through the intense summers and freezing winters typical of our beloved Greater Montreal area. This high-performance, energy-efficient unit promises a cozy home environment even when outdoor temperatures plummet to -30°C, a necessity for our Canadian climate.
The Project: A Unique Installation Story
Every HVAC installation comes with its own story, and this one was no different. Our clients were eager to improve their home’s efficiency without compromising on aesthetics. With the Tosot LomoPlus UltraHeat, they found the perfect fit. The unit's 24,000 BTU compressor, paired with two sleek 12,000 BTU indoor units, delivers seamless temperature control across two distinct zones, ensuring that every corner of the house remains comfortable.
We began the project by carefully assessing the home layout and ensuring we had a strategic plan to place the indoor units for optimal airflow. The goal? To minimize energy consumption while maximizing heating and cooling performance.
Why the Tosot LomoPlus UltraHeat?
For this installation, we chose the Tosot LomoPlus UltraHeat for several standout features. The unit isn’t just about temperature regulation; it’s about offering the ultimate in comfort and efficiency. Here are some compelling reasons why this model shines:
- Extreme Cold Heating Capability: Even at temperatures as low as -30°C, the Tosot LomoPlus provides consistent heating. This ensures that no matter how frigid Montreal winters become, warmth isn’t just a hope—it’s a guarantee.
- Energy Efficiency: With a remarkable 23.0 SEER rating, this unit delivers high efficiency, lowering energy costs while keeping the home environment at just the right temperature.
- LogisVert Grant: To top it off, the model qualifies for a substantial $2,148 LogisVert Grant from Hydro-Québec, making it an even smarter investment.
The Power of Dual Zones
One of the biggest advantages of the DoubleZone system is its ability to control two separate areas independently. Our clients opted to have one indoor unit in the living area and another in the master bedroom. This setup provides flexibility, allowing them to maintain perfect temperatures in both spaces without wasting energy.
- Zone 1: Living Room Comfort
The living room, a space where the family gathers, is kept at an ideal temperature all year round. The 12,000 BTU unit is quiet yet powerful, with an almost whisper-like sound pressure level of 60.0 dB(A) outside, making the indoor experience serene and pleasant. - Zone 2: Master Bedroom Tranquility
The second 12,000 BTU unit was installed in the master bedroom, ensuring restful nights. With optional WiFi controls, the homeowners can easily adjust settings from their smartphones, perfect for those chilly nights when you want to stay warm under the covers.
Installation Details and Challenges
Our team faced a few obstacles unique to this Dollard-des-Ormeaux property. The exterior wall structure required precise mounting to ensure stability and efficiency of the outdoor unit, especially considering Montreal's weather fluctuations. Using custom brackets, we secured the 36.2 x 15 x 31.1-inch outdoor unit, designed to withstand heavy winds and snow buildup.
- Durability in Design: The outdoor unit is protected by a base with a built-in heating element, preventing ice from forming on the coils. This not only extends the unit's lifespan but also guarantees efficiency throughout harsh winter months.
- Compact and Aesthetic: Both indoor and outdoor units have a compact design that seamlessly blends into the home’s exterior and interior without being obtrusive.
High-Tech Features for Modern Living
The Tosot LomoPlus UltraHeat isn't just about power; it’s packed with intelligent features for maximum convenience:
- Two-Stage Compressor: Engineered for efficiency, this feature ensures optimal performance regardless of the season.
- Intelligent Defrost System: Gone are the days of unnecessary defrost cycles. This heat pump uses smart defrost technology, activating only when needed, saving energy and reducing service calls.
- Self-Diagnosis Capability: Should an issue arise, the built-in diagnostic system helps technicians quickly identify and resolve problems, reducing downtime.
- I Feel Technology: This unique feature senses the temperature directly from the remote control, ensuring more accurate climate control based on where you are in the room.
A Commitment to Customer Satisfaction
We believe in backing our installations with a commitment to quality and service. That’s why we offer the best warranty in the industry: a 10-year parts warranty, with the option to extend labor coverage to 10 years. This gives our customers peace of mind, knowing they are covered for the long haul.
Environmental Responsibility
Utilizing R-410A refrigerant, the Tosot LomoPlus UltraHeat is also a greener choice, aligning with our company’s commitment to sustainability. It delivers exceptional efficiency without depleting the ozone layer, making it a responsible choice for environmentally-conscious homeowners.
Why Choose AirGreen?
Choosing the right HVAC contractor is as important as choosing the right unit. At AirGreen, we pride ourselves on our expertise, reliability, and dedication to customer satisfaction. Our experienced team ensures every installation is completed with precision and care, making sure our clients get the full benefit of their investment.
- Experience You Can Trust: With years of experience serving Montreal, Laval, Longueuil, North Shore, and South Shore, our technicians are trained to handle even the most challenging installations.
- Tailored Solutions: We don’t believe in one-size-fits-all. Every home is unique, and we customize our installations to meet specific needs.
Ready to Upgrade Your Comfort?
If you’re considering an upgrade to your home’s heating and cooling system, don’t hesitate to contact us. With our knowledge and dedication to quality service, we’ll help you find the perfect solution for your needs.
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).