Installation of a Senville Leto 18,000 BTU Wall-Mounted Heat Pump in Laval
Learn about our expert installation of the Senville Leto 18,000 BTU heat pump in Laval. Discover how this advanced system offers energy efficiency, smart control, and year-round comfort.
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 Smart Solution for Year-Round Comfort in Laval
At AirGreen, we pride ourselves on delivering high-quality HVAC installations that provide efficient and reliable solutions for our clients. Recently, we completed a Senville Leto 18,000 BTU wall-mounted heat pump installation in Laval, and this particular project was a great example of the versatility and performance that modern heat pump technology can bring to your home. From advanced energy efficiency to modern smart-home capabilities, this installation showcases everything you need to know about the Senville Leto model and why it’s an excellent choice for homes in the Montreal, Laval, Longueuil, and surrounding areas.
The Project Overview: Precision Installation in Laval
Our client in Laval was looking for a system that could handle both heating and cooling throughout the year while keeping energy costs low. With Laval’s cold winters and warm summers, the 18,000 BTU capacity of the Senville Leto made it the perfect match for their home, offering both power and efficiency. The system needed to provide year-round comfort, especially during harsh winter days when temperatures can drop well below freezing. The Leto’s high-efficiency inverter technology allows it to function smoothly even in conditions as cold as -15°C (5°F).
Why the Senville Leto is a Top Choice for Laval Homes
The Senville Leto 18,000 BTU model isn’t just any standard heat pump. It offers a range of advanced features that make it one of the best choices for climate control in both residential and commercial settings. Here are some of the standout features that set this unit apart:
- 19 SEER (Seasonal Energy Efficiency Ratio): This high SEER rating means the unit can significantly reduce energy consumption, allowing homeowners to save up to 48% annually on energy bills compared to older systems.
- Heat Pump Functionality: The built-in heat pump ensures the system can provide reliable warmth even in frigid conditions, making it perfect for the cold climate of Laval.
- Quiet Operation: This model operates at impressively low noise levels, offering an almost silent experience inside the home—perfect for creating a calm and comfortable environment.
- Smart Integration with Alexa: One of the most exciting features of the Senville Leto is its ability to integrate seamlessly with smart home systems. Using Alexa, homeowners can control the temperature, set routines, and manage climate control remotely via their phone or any other Alexa-enabled device.
The Installation Process: Expertise Matters
At AirGreen, we understand that installing a heat pump system like the Senville Leto is more than just a matter of mounting the indoor unit and connecting some wiring. It’s about precision, efficiency, and ensuring every aspect of the system is optimized for performance. Our team arrived at the client’s home in Laval with all necessary equipment, including a 16-foot installation kit, ensuring that the entire process would be smooth and efficient.
We took into account the layout of the house and the location of windows, ensuring that the placement of the indoor unit would allow for optimal air circulation throughout the home. After securing the unit, we connected the outdoor compressor and ensured that all wiring and refrigerant piping were correctly installed, maintaining the highest standards of safety and efficiency.
The outdoor unit, which is often overlooked in installations, was carefully positioned to maximize airflow and reduce noise for neighbors while ensuring easy access for maintenance in the future. Proper placement is crucial, especially in tight urban environments like Laval, where space is often limited.
A Look at the Leto's Performance After Installation
After the installation, we tested the unit to ensure everything was functioning correctly. The Senville Leto immediately impressed with its quick response time, bringing the home to the desired temperature in record time. One of the most noticeable benefits of this system is its ability to maintain a steady temperature without sudden fluctuations, thanks to its DC Inverter technology.
The built-in dehumidification function was particularly useful for the client, as it helps maintain comfortable humidity levels throughout the summer months, adding another layer of comfort and climate control.
Why Choose AirGreen for Your Heat Pump Installation?
At AirGreen, we believe that every installation is an opportunity to showcase our expertise and commitment to our clients. With over a decade of experience in installing HVAC systems across the Montreal, Laval, Longueuil, North Shore, and South Shore areas, we know the ins and outs of modern heat pump technology and how to tailor it to the specific needs of your home.
Our team of certified technicians ensures that every installation is done to the highest standard, whether it’s a single-family home, a multi-unit building, or a commercial property. We also work closely with our clients to provide advice on how to get the most out of their HVAC systems, ensuring that they not only stay comfortable year-round but also save money in the long run.
Key Benefits of Choosing the Senville Leto Heat Pump
- Energy Efficiency: The 19 SEER rating and DC Inverter technology reduce energy consumption by up to 48%, helping you lower your energy bills while maintaining a comfortable environment.
- Year-Round Climate Control: Whether it’s a hot summer day or a freezing winter night, the Senville Leto can keep your home at the perfect temperature all year long.
- Smart Technology: Control your home’s climate from anywhere using Alexa or a smartphone app, allowing for ultimate convenience and efficiency.
- Whisper-Quiet Operation: Enjoy a peaceful living space with the Leto’s low-noise indoor and outdoor units.
- Comprehensive Warranty: With a 5-year warranty on both the compressor and other parts, you can rest easy knowing that your investment is protected.
Conclusion: A Smart Choice for Laval Homeowners
This installation in Laval is yet another example of how the Senville Leto 18,000 BTU wall-mounted heat pump is an ideal choice for homeowners looking to maximize comfort while minimizing energy costs. Whether you’re looking to upgrade your current system or install a new one, the Senville Leto offers the perfect combination of affordability, efficiency, and advanced features.
If you’re interested in learning more about how a heat pump can improve your home’s climate control, contact us at AirGreen. Our expert team will guide you through the process, from selecting the best unit for your needs to ensuring a smooth and professional installation.
How it goes, from the first call to the end
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.
And 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.
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.
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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?
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Is the estimate free?
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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).