Installation of a Tosot Lomo 23 Wall-Mounted Heat Pump in Laval
See how AirGreen installed a Tosot Lomo 23 Wall-Mounted Heat Pump in Laval, offering exceptional efficiency and year-round comfort. Find out why this unit is a great choice for your home!
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.
Elevating Home Comfort with Advanced HVAC Solutions
At AirGreen, we pride ourselves on delivering exceptional HVAC services across Montreal, Laval, Longueuil, North Shore, and South Shore. Recently, we had the opportunity to install a Tosot Lomo 23 Wall-Mounted Heat Pump in a charming home in Laval. This installation showcases our commitment to quality, efficiency, and customer satisfaction. Let’s dive into the details of this installation and explore why the Tosot Lomo 23 is an excellent choice for home comfort.
The Perfect Fit for Laval's Climate
Laval experiences a range of weather conditions, from hot summers to freezing winters. The Tosot Lomo 23 is designed to handle these extremes efficiently. With a cooling capacity of 12,000 BTU and the ability to provide comforting warmth even at temperatures as low as -25°C, this unit ensures year-round comfort.
Unpacking the Tosot Lomo 23
- Brand: Tosot
- Model: Lomo 23
- Type: Wall-Mounted Heat Pump
- Size: 12,000 BTU
- Efficiency: 22.0 SEER
- AHRI Number: 9108746
- Voltage: 220V
- Sound Pressure Level (Exterior): 54.0 dB(A)
- Sound Pressure Level (Interior): 29 / 45 dB(A)
- Gas (Freon): R-410A
- Dimensions (Interior): 33.4 x 8.2 x 11.4 inches
- Dimensions (Exterior): 33.4 x 12.6 x 23.6 inches
- Warranty: 10 years on compressor and parts
Installation Details
The installation process of the Tosot Lomo 23 in Laval was meticulously planned and executed. The unit's compact design allowed for seamless integration into the existing space without compromising aesthetics or functionality. Our team ensured that the piping (1/4 - 1/2) and electrical connections were precisely set up to guarantee optimal performance.
Exceptional Efficiency and Features
The Tosot Lomo 23 stands out with its high efficiency and advanced features. With a SEER rating of 22.0, this heat pump ensures significant energy savings, reducing utility bills while maintaining a comfortable indoor environment.
Key Features:
- Heating Capacity: Maintains 80% heating efficiency at outdoor temperatures as low as -25°C.
- Smart Defrost: The microprocessor-controlled defrosting system maximizes energy savings by only activating when necessary.
- Memory Function: Automatically restores previous settings after a power failure, ensuring continuous comfort.
- Self-Diagnosis: The electronic control system displays error codes for easy maintenance.
- Quiet Operation: With an interior sound pressure level of just 29 dB(A) at low settings, the unit operates quietly, enhancing indoor comfort.
Backstory of the Installation
Our client in Laval had been facing challenges with their old HVAC system, which struggled to keep up with the fluctuating temperatures. They needed a reliable and efficient solution that would provide consistent comfort throughout the year. After a thorough assessment of their needs and space, we recommended the Tosot Lomo 23 for its superior performance and features.
The installation process was smooth, thanks to the compact design and our team's expertise. We ensured that the exterior unit was securely mounted, as seen in the provided image, to withstand the elements and maintain efficient operation. The client was particularly impressed with the unit's quiet operation and smart defrost system, which added to their overall satisfaction.
Environmental Considerations
The Tosot Lomo 23 uses R-410A refrigerant, known for its lower environmental impact compared to older refrigerants. This aligns with our commitment to providing environmentally friendly HVAC solutions. Additionally, the unit’s high efficiency contributes to reducing the overall carbon footprint by minimizing energy consumption.
Benefits of Choosing AirGreen
Choosing AirGreen for your HVAC needs comes with numerous benefits:
- Expert Installation: Our experienced technicians ensure that every installation is performed to the highest standards.
- Quality Products: We select top-rated products like the Tosot Lomo 23 to ensure long-lasting performance and customer satisfaction.
- Comprehensive Warranty: Enjoy peace of mind with a 10-year warranty on both the compressor and parts.
- Energy Efficiency: Our solutions are designed to reduce energy consumption, saving you money and protecting the environment.
Conclusion
The installation of the Tosot Lomo 23 Wall-Mounted Heat Pump in Laval exemplifies our dedication to enhancing home comfort with advanced, efficient, and reliable HVAC solutions. This unit's exceptional features and performance make it a standout choice for homeowners looking to upgrade their heating and cooling systems.
If you’re considering an HVAC upgrade, contact AirGreen for a consultation. We’re here to help you find the perfect solution for your home.
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.
More jobs to see, near you
By town, by equipment or by region: browse more than 4,700 published projects.
Each dot: a town where AirGreen has published projects. The glowing dot: this job.
Every house has its constraints. We see them before we install.
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).