Installation of a Tosot Lomo 23 Mini Split in Senneville
Transform your home with the Tosot Lomo 23. Our latest installation in Senneville not only cools but charms, proving simplicity and efficiency can go hand-in-hand!

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.
A Breeze of Fresh Air: How a Simple Upgrade Made a Huge Difference
When it comes to home comfort, the right HVAC system makes all the difference, and AirGreen's latest project in Senneville showcases just how transformative a well-chosen and professionally installed mini split can be. Read on to discover the seamless integration of the Tosot Lomo 23, a model celebrated for its quiet operation and high efficiency—ideal for those looking to enhance their living space without disruption.
Project Overview: Understanding the Customer's Needs
Our recent installation in Senneville was driven by a straightforward yet vital need: additional air conditioning in a residential bedroom. The homeowner sought a solution that was not only effective but also unobtrusive and cost-efficient. The choice fell on the Tosot Lomo 23 mini split, renowned for its silent operation and impressive energy efficiency.
Choosing the Right Model: Tosot Lomo 23 Mini Split
Selecting the right air conditioning unit involves considering several factors, from cooling capacity to energy efficiency. The Tosot Lomo 23 stands out with its:
- Cooling Capacity: 9,000 BTU, perfect for small to medium-sized rooms.
- Energy Efficiency: Rated at 23.0 SEER, ensuring lower electricity bills.
- Noise Level: With an interior sound pressure level as low as 29 dB(A), it's quieter than a whispered conversation.
- Advanced Features: Optional WiFi connectivity and a smart defrost system enhance user convenience and efficiency.
This model was an ideal match for our client's requirements, offering both functionality and extra savings thanks to the Provincial Grant under the LogisVert Program by Hydro-Québec, reducing the overall investment cost significantly.
Installation Process: Precision and Professionalism
The installation of the Tosot Lomo 23 in Senneville was characterized by simplicity and meticulous attention to detail. Our team ensured a clean setup by:
- Hiding Pipelines and Wires: All necessary conduits were discreetly placed behind the unit, preserving the room’s aesthetic and eliminating the need for additional renovations.
- Optimal Placement: Ensuring the unit was positioned for maximum air distribution and accessibility for future maintenance.
These efforts resulted in a streamlined appearance and enhanced functionality, providing optimal cooling without compromising the room's design.
Benefits of the Tosot Lomo 23 Installation
Post-installation, the benefits of choosing the Tosot Lomo 23 were immediately apparent:
- Dual Functionality: The unit acts as both an air conditioner and a heat pump, providing comfort year-round, from scorching summers to freezing winters.
- Cost Efficiency: With the aid of government grants, the cost was less than a traditional air conditioner, providing both heating and cooling solutions.
- Increased Property Value: The addition of a high-efficiency, energy-saving HVAC system is a desirable feature that enhances the overall value of the property.
Customer Satisfaction: A Testimony to Quality
The homeowner's satisfaction underscores the success of this installation. Thrilled with the quiet operation and the efficiency of the Tosot Lomo 23, the customer appreciated the professional demeanor of our installation team and the clean, hassle-free setup that required no subsequent modifications to their living space.
Why Choose AirGreen for Your HVAC Needs?
Choosing AirGreen means opting for:
- Expertise: Years of experience ensuring each installation meets high standards of quality and efficiency.
- Customer-Centric Solutions: We tailor our services to meet the specific needs of our clients, whether it's a simple residential setup or a more complex commercial project.
- Quality Products: We partner with leading manufacturers like Tosot to provide our clients with top-tier technology.
With AirGreen, transform your space into a haven of comfort and efficiency. Our commitment to quality and customer satisfaction makes us the preferred choice for HVAC services in Montreal and beyond.
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).
