Installation of a Tosot LomoPlus UltraHeat DoubleZone Heat Pump in Old Port, Montréal
Experience year-round comfort with our Tosot LomoPlus UltraHeat installation in Old Port, designed to handle Montréal’s harshest winters effortlessly!
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Uncompromised Comfort and Efficiency Right in the Heart of Old Port, Montréal
When it comes to finding the perfect balance between energy efficiency and unmatched comfort, our latest project in the picturesque Old Port of Montréal exemplifies just that. The historic charm of this neighborhood posed unique challenges, but with our extensive experience and the innovative technology of the Tosot LomoPlus UltraHeat DoubleZone Heat Pump, we were more than ready to deliver.
Why the Tosot LomoPlus UltraHeat Stands Out
For this project, we installed a 36,000 BTU compressor paired with two 18,000 BTU indoor units, providing flexible and efficient heating and cooling across two zones. The LomoPlus UltraHeat is not your average heat pump; it's a game-changer in cold climate technology. Here's why:
- Unbeatable Cold Weather Performance: With heating capabilities down to a bone-chilling -30°C, this heat pump ensures warm and cozy indoor conditions even during the harshest Montréal winters.
- High SEER Rating: At 23.0 SEER, this unit offers outstanding energy efficiency, which translates to significant cost savings over time.
- Advanced Two-Stage Compressor: Built by Gree, the world leader in HVAC manufacturing, the LomoPlus uses a two-stage compressor to optimize performance and energy consumption.
Installation Details and Unique Challenges
The Old Port area is renowned for its old-world architecture, which requires meticulous planning and precise execution for any installation. Our team worked diligently to ensure the 36,000 BTU compressor was securely mounted on a brick facade, maintaining both the aesthetics of the building and the integrity of the structure.
- Strategic Mounting: We used heavy-duty brackets to mount the outdoor unit securely while keeping vibrations to a minimum. This ensures that noise levels remain low, even during peak operation.
- Perfect Placement of Indoor Units: The two indoor units were strategically placed to optimize air circulation. This allows the system to distribute warm or cool air evenly, avoiding cold spots and maintaining comfort throughout the residence.
- LogisVert Grant Eligibility: Our installation qualifies for a $1,450 grant from Hydro-Québec, making this project not only environmentally friendly but also economically attractive for the homeowner.
Smart Technology for Modern Living
The Tosot LomoPlus UltraHeat is equipped with cutting-edge features designed for today’s tech-savvy homeowners:
- Optional WiFi Connectivity: Imagine controlling your home’s temperature from anywhere in the world. With the optional WiFi module, you can adjust settings through your smartphone, ensuring your home is always at the perfect temperature.
- "I Feel" Mode: This innovative feature senses the temperature directly from the remote control, making real-time adjustments for precise comfort and increased energy savings.
- Turbo Functionality: Need to heat or cool a room quickly? The Turbo function boosts airflow to reach your desired temperature in no time.
A Future-Proof Investment
We also emphasized the durability and reliability of the LomoPlus UltraHeat. This model comes with a 10-year parts warranty, and for added peace of mind, an optional 10-year labor warranty is available.
Additional Technical Highlights:
- Energy Star® Certified: Ensuring top-tier energy efficiency.
- AHRI Certified (204344220): Guaranteeing optimal performance as tested under rigorous industry standards.
- Quiet Operation: With an exterior sound pressure level of 62.0 dB(A), this unit is one of the quietest in its class.
- Environmentally Friendly Refrigerant: Utilizes R-410A, which is less harmful to the environment.
Professionalism and Trust
At AirGreen, we pride ourselves on delivering professional, high-quality installations. Our expertise ensures that even the most complex projects are completed with precision and care. Plus, the Tosot LomoPlus UltraHeat’s self-diagnosis feature reduces service time, allowing for quick and efficient maintenance.
Why Choose AirGreen?
- Decades of Experience: We understand the specific requirements of Montréal's climate and architecture.
- Customer-Centric Approach: From planning to post-installation support, we are committed to ensuring your satisfaction.
- Top-Notch Equipment: With brands like Tosot and the trusted manufacturing expertise of Gree, we deliver installations that are built to last.
Ready to Upgrade Your Comfort?
Whether you're dealing with sweltering summers or bone-chilling winters, the Tosot LomoPlus UltraHeat has you covered. If you're looking for a heating and cooling solution that’s both efficient and powerful, our team at AirGreen is here to help you make the right choice.
Contact us today to learn more about how we can transform your home’s climate control system and take advantage of grants like LogisVert!
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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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).