Installation of a Tosot Lomo 23 Mini Split in Saint-Constant
Experience the silent efficiency of the Tosot Lomo 23 Mini Split—expertly installed by AirGreen for perfect comfort in compact spaces.
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 Refreshing Addition to Your Living Space
A Seamless Fit for Compact Comfort
When it comes to enhancing the comfort of your living space, especially in compact areas, choosing the right HVAC equipment is crucial. At AirGreen, we recently had the pleasure of installing the Tosot Lomo 23 Mini Split in a charming Saint-Constant home on the North Shore. This installation was not just about adding an air conditioner; it was about integrating a solution tailored to meet specific needs with precision and care.
Why the Tosot Lomo 23?
The Tosot Lomo 23 stands out in the realm of mini split systems. Here’s why this model was the perfect match for our client's living room:
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Efficiency: With a 23.0 SEER rating, the Lomo 23 is designed to provide maximum cooling and heating without driving up energy costs. This unit is Energy Star® certified, ensuring that it meets the highest standards of energy efficiency.
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Compact and Quiet: The Lomo 23 is renowned for its compact design, making it an ideal choice for spaces ranging from 300-400 square feet. Furthermore, the indoor unit operates at a low sound pressure level (29 / 43 dB(A)), ensuring that it delivers comfort without noise disturbance.
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Smart Features: Optional WiFi connectivity allows for easy management of the system through a smartphone. Whether it's adjusting the temperature or scheduling operations, control is at your fingertips.
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Heating Capabilities: Despite its compact size, the Lomo 23 excels in heating efficiency, capable of operating effectively even at -25°C thanks to GREE's two-stage Inverter technology. This makes it a versatile year-round solution for climates that experience harsh winters.
The Installation Process: Simple and Professional
The installation process in Saint-Constant was straightforward, reflecting the simplicity of both the project requirements and the design of the Tosot Lomo 23. Our client needed additional cooling for their living room, a space limited in size but significant in everyday life. The key considerations were efficiency, noise level, and space utilization—all expertly met by the Lomo 23.
Our team conducted the installation with meticulous attention to detail:
- Site Preparation: Ensuring that the installation site was prepared without disrupting the existing layout and decor of the living room.
- Unit Placement: Strategically placing both the indoor and outdoor units to optimize performance and aesthetics.
- Connection and Setup: Installing and securing all necessary connections, including electrical and refrigerant lines, with precision to ensure efficient operation and safety.
- System Testing: Conducting thorough tests post-installation to guarantee that the unit operates at peak efficiency and comfort levels.
Customer Satisfaction: Beyond Cooling
Post-installation feedback was overwhelmingly positive. Our client was particularly impressed with the quiet operation and the efficiency of the Tosot Lomo 23. The sleek design of the unit complemented their interior decor, proving that functionality and style could go hand-in-hand. Additionally, the eligibility of this model for a $340 Provincial Grant under the LogisVert Program by Hydro-Québec was an added benefit, providing significant savings.
Long-Term Peace of Mind
The 10-year warranty on both compressor and parts offered by Gree, the manufacturer of Tosot units, places the Lomo 23 among the top choices for consumers looking for reliability and peace of mind. The availability of an extended warranty further enhances this benefit, making the Tosot Lomo 23 a prudent investment for our clients.
Conclusion: Your Ideal Comfort Solution
At AirGreen, we understand that every home and every room presents unique challenges and opportunities. Our installation of the Tosot Lomo 23 Mini Split in Saint-Constant exemplifies our commitment to providing personalized solutions that not only meet but exceed our clients’ expectations. If you are looking for an HVAC solution that promises efficiency, comfort, and quiet operation, look no further than AirGreen and the Tosot Lomo 23.
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).