Lennox M40 Smart Thermostat

Uses homeowner inputs and Smart Away® geo-fencing capabilities to learn your routine and create a schedule that maintains comfort when the home is occupied and help save energy when it's not.

Heating, ventilation and air-conditioning (HVAC) equipment with the ENERGY STAR label meets or exceeds federal guidelines for energy-efficient performance.

Remote control of your home environment is just one touch or voice command away with the Lennox M40 Smart Thermostat. Monitor temperatures and schedules from anywhere in the world using the Lennox Home app on your smartphone or tablet. Available on the App Store and Google Play.

Performance reports give you historical data on your system’s operation and performance. It tracks temperature ranges, how long the system runs each day and more. Opt in to have reports emailed directly to you each month.

The Lennox M40 Smart Thermostat effortlessly integrates with a range of smart home devices supported by Matter, including Apple, Amazon, Google and Samsung. It can also integrate with premium home automation systems like Control4, Building36 and more.

Thanks to its custom equipment profiles configured by your local Lennox dealer, the Lennox M40 Smart Thermostat can help seamlessly install, service and fine tune your home’s system based on your location and climate. This advanced technology along with its speedy, secure wireless connection allows you to easily and quickly get up and running with the perfect air you’re looking for.

The Lennox M40 Smart Thermostat's four-color, touchscreen display is easy to use, with large, legible fonts and organized screens that make setting your thermostat a breeze. With a slim profile and glass-like finish, it is more attractive on your wall than traditional thermostats.