Installation of a Tosot LomoPlus UltraHeat DoubleZone Heat Pump in Châteauguay
Experience year-round comfort with AirGreen’s latest installation of the Tosot LomoPlus UltraHeat in Châteauguay—where technology meets tranquility.
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AirGreen: Pioneering Comfort in Every Season
In the picturesque community of Châteauguay, a recent installation by AirGreen has set a new standard for residential climate control. Our team expertly installed the Tosot LomoPlus UltraHeat DoubleZone Heat Pump, a system known for its robust performance and silent operation. Here's a detailed look at how this installation not only enhances comfort but also aligns perfectly with the needs and preferences of our discerning customers.
Project Overview
The task was to install a 24,000 BTU Tosot LomoPlus UltraHeat model, equipped with a powerful dual-zone capability that manages two interior units of 12,000 BTU each. This project stood out due to its technical demands and the specific customer requirements that needed to be met with precision and care.
Unique Features of the Tosot LomoPlus UltraHeat
Efficient and Silent Operation
The LomoPlus UltraHeat is celebrated for its exceptional efficiency, boasting a 23.0 SEER rating. Its design includes a two-stage compressor, ensuring that it delivers consistent, energy-efficient heating and cooling, even during the coldest days of the Canadian winter. Notably, its operation remains whisper-quiet at 60 dB(A), ensuring that home comfort doesn't come at the cost of peace and quiet.
Innovative Technology for Extreme Climates
Designed to withstand the rigorous Canadian climate, this heat pump performs reliably down to -30°C. It features GREE's innovative two-stage Inverter technology, allowing the unit to maintain up to 80% of its heating capacity even in extreme cold. This makes the LomoPlus UltraHeat an ideal choice for those who value reliability and continuous comfort throughout the seasons.
Smart Features for Enhanced Usability
Equipped with Wi-Fi capabilities, the heat pump allows homeowners to adjust settings remotely via a smartphone, offering unmatched convenience and control. Additionally, features like intelligent defrost and a memory function that restores settings after a power outage highlight the user-friendly nature of this model.
Challenges Overcome
The installation presented unique challenges, particularly in integrating the system into the existing home architecture without disrupting its aesthetic. Our team custom-matched the exterior aluminium capping to the house’s façade, skillfully concealing the piping and electrical wiring. This attention to detail not only ensured functional superiority but also maintained the visual integrity of the property.
Customer Satisfaction and Beyond
The client's satisfaction was evident from their immediate feedback. They were particularly impressed with the seamless installation and the aesthetic considerations taken by our team. Their endorsement extended beyond personal satisfaction, as they recommended AirGreen to friends and family, a testament to their trust and confidence in our services.
Why Choose AirGreen for Your HVAC Needs?
At AirGreen, we don't just install HVAC systems; we enhance lifestyles. Our commitment to quality, coupled with our dedication to customer satisfaction, makes us the preferred choice for HVAC solutions in Montreal, Laval, Longueuil, North Shore, and South Shore. Whether you're looking to install a new system or upgrade an existing one, our experts are ready to deliver top-tier service tailored to your needs.
Guaranteed Comfort with Every Installation
With a comprehensive 10-year warranty covering labor, parts, and compressor, each installation comes with the promise of long-term reliability and peace of mind. Partner with AirGreen and experience the pinnacle of indoor climate control, designed with your comfort and convenience in mind.
The job tools
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.
How the job unfolds
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 we check on a job like this one
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.
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.
Good habits, once the unit is in place
Six simple habits that keep the unit going. Your list stays on this device.
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.
The right pages, at the right time
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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An on-site estimate, the right capacity, the right equipment.
The on-site estimate is free and the quote follows within 24 hours.
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).