Installation of a Tosot LomoPlus UltraHeat Wall-Mounted Heat Pump in Lachine, Montreal
Discover how AirGreen’s expert installation of the Tosot LomoPlus UltraHeat brings year-round comfort and efficiency to homes in Montreal, handling extreme weather with ease.
Take a tour of the installation
Each number is a point we check on site. Switch between summer and winter to watch air and heat move.
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.
Installation of a Tosot LomoPlus UltraHeat Wall-Mounted Heat Pump in Lachine, Montreal
Bringing Year-Round Comfort to Lachine with Tosot's Reliable Performance
When it comes to HVAC installations, AirGreen is committed to providing the best solutions to meet the unique climate challenges of Montreal and surrounding areas. Our recent installation in Lachine, Montreal features the 18,000 BTU Tosot LomoPlus UltraHeat wall-mounted heat pump—a top-tier choice for energy-efficient and powerful heating and cooling. Designed to withstand the extremes of Canadian weather, this system offers exceptional comfort, reliable operation, and enhanced efficiency. Let’s dive into the details of this installation and explore why this Tosot model is an excellent addition for any homeowner seeking comfort, efficiency, and peace of mind.
Why Choose Tosot LomoPlus UltraHeat?
Tosot has earned a reputation as a dependable name in HVAC, offering innovative designs that combine high-performance and durability. The LomoPlus UltraHeat is no exception, boasting an impressive heating capacity down to -30°C. This capability ensures that homeowners can rely on their heat pump even during the coldest winter nights in Quebec. With cooling capabilities at 18,000 BTU, this model is perfect for handling summer heatwaves as well, keeping indoor temperatures cool and comfortable.
Some key highlights of the Tosot LomoPlus UltraHeat include:
- Energy Efficiency: With a 24.5 SEER rating, this unit operates at high efficiency, minimizing energy usage while maximizing output.
- WiFi Control: Manage the temperature and settings remotely, providing flexibility and ease of control.
- Quiet Operation: With sound pressure levels as low as 34 dB(A) indoors, the Tosot LomoPlus UltraHeat operates quietly, ensuring a peaceful home environment.
- LogisVert Grant Eligibility: Qualified for a $1,704 LogisVert Grant by Hydro-Québec, this installation provides financial incentives for those looking to upgrade their heating and cooling systems.
The Installation Process: Precision and Expertise in Lachine, Montreal
At AirGreen, we understand that every installation is unique, catering to the specific layout and requirements of each space. This project in Lachine involved careful planning to ensure optimal placement of both the indoor and outdoor units. The indoor unit’s compact dimensions of 43.3 x 9.8 x 12.8 inches allowed us to position it discreetly on the wall, ensuring it blended seamlessly with the home’s interior design. This positioning also enhanced air distribution, allowing for effective climate control throughout the room.
The outdoor unit, measuring 38.5 x 16.8 x 31.1 inches, was installed securely with considerations for maximum efficiency and minimal noise impact on both the client and their neighbors. With a sound level of 59.0 dB(A), the Tosot LomoPlus UltraHeat’s outdoor unit is designed to be unobtrusive while still delivering strong performance.
Tosot LomoPlus UltraHeat's High Performance Features
Our choice to install the Tosot LomoPlus UltraHeat in this Lachine residence was no accident. This model combines advanced features designed to handle both extreme heat and cold, making it a versatile and valuable investment. Key performance features include:
Advanced Two-Stage Compressor
The two-stage compressor in the LomoPlus UltraHeat adapts dynamically to different temperature conditions, providing just the right amount of heating or cooling needed. This not only saves energy but also reduces wear and tear on the unit, prolonging its lifespan.
Intelligent Defrosting System
Unlike conventional units that engage in routine defrost cycles regardless of necessity, the LomoPlus UltraHeat employs an intelligent defrost system that operates only when needed. This feature is especially beneficial during Montreal’s harsh winters, as it prevents energy waste while maintaining optimal performance, even during the coldest days.
"I Feel" Remote Sensor Technology
The "I Feel" technology incorporated into the remote control allows the unit to sense temperature directly from where the remote is placed. This offers a more precise temperature control based on the exact area where the user is, enhancing comfort levels while avoiding unnecessary energy use.
Self-Diagnosis System
The built-in self-diagnosis system keeps track of the unit’s performance and can quickly alert technicians to any potential issues. This proactive approach to maintenance minimizes downtime and ensures the heat pump operates smoothly for years to come.
Benefits of Choosing AirGreen for Your HVAC Needs
Our team at AirGreen has the expertise and dedication required to provide flawless installations and top-tier customer support. For this Lachine project, we ensured that every component was installed with precision, from the piping (1/4 - 5/8) to the 220V electrical connections. We believe in transparent communication, reliable service, and installations that align with the highest industry standards.
Extended Warranty for Peace of Mind
The Tosot LomoPlus UltraHeat comes with an impressive 10-year warranty on parts and compressor, with the option to extend labor coverage. This extended warranty gives our clients the confidence that their investment is protected, and that AirGreen will be there to support them whenever needed.
Eligible for Hydro-Québec's LogisVert Grant
For environmentally conscious homeowners, this heat pump is eligible for the $1,704 LogisVert Grant from Hydro-Québec, which incentivizes energy-efficient choices. This grant makes the initial investment more affordable, while reducing long-term energy expenses—a win-win for both the homeowner and the environment.
Why Tosot LomoPlus UltraHeat is the Best Choice for Quebec's Climate
Quebec’s climate can be unforgiving, with freezing temperatures in winter and intense heat in summer. The Tosot LomoPlus UltraHeat is purpose-built to tackle these conditions, offering homeowners a reliable, year-round solution. With R-410A refrigerant and a solid AHRI rating of 10062020, this unit is engineered for efficiency and environmental responsibility.
Additionally, Tosot’s technology ensures that the outdoor unit remains fully functional even in extreme cold. The heating base prevents freezing, safeguarding the unit’s efficiency and reducing maintenance costs. With up to 80% heating capacity maintained at -30°C, this system provides robust heating without sacrificing efficiency.
Key Specifications at a Glance
Here’s a quick overview of the Tosot LomoPlus UltraHeat specifications:
- Cooling Capacity: 18,000 BTU
- Heating Capacity: Effective up to -30°C
- Sound Pressure Level: 34 / 51 dB(A) indoor, 59 dB(A) outdoor
- SEER Efficiency Rating: 24.5 SEER
- Energy Star® Certified: Yes
- WiFi Capability: Included for remote control and monitoring
Customer Satisfaction: A Core Value at AirGreen
At AirGreen, customer satisfaction is our priority. We pride ourselves on our transparent, friendly, and professional approach, ensuring each client receives the best HVAC solution tailored to their needs. This Lachine installation showcases our commitment to excellence, as we strive to deliver HVAC systems that not only meet but exceed our clients' expectations. The feedback from our client was overwhelmingly positive, with appreciation for the seamless installation process and the system’s performance.
Our goal is to keep every home comfortable and energy-efficient, and this installation in Lachine is a testament to that mission. If you're considering upgrading your home’s HVAC system, AirGreen is here to help you select the right model and provide a hassle-free installation that will keep you comfortable all year round.
The big day, step by step
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.
What would it look like 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.
Four mistakes we do not make
Flip each card to see what we do instead.
Your own project, step by step
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.
Is your home ready?
Check what applies at your place. A "no" is not a refusal: it is what we sort out during the estimate.
Four statements: true or false?
It all comes down to details you have just seen.
1. In heating mode, the outdoor unit can produce water.
During defrost cycles. That water must drain away without forming ice.
2. You pick the capacity with a simple square-footage rule.
Windows, insulation, orientation and how the room is used all count. Capacity is chosen on site.
3. A multi-zone connects several indoor heads to a single condenser.
One head per room, all on the same condenser. Each room keeps its own temperature.
4. The disconnect can sit behind the patio furniture.
It must stay accessible: it is what shuts the unit off for service.
0 / 4 right answers
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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Every house has its constraints. We see them before we install.
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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).