Unlock the full potential of your Lennox® heating and cooling system.
Select your Lennox Smart Product
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Lennox S40 Smart Thermostat
The ultimate controller for more precise comfort
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New
Lennox L40 Smart Thermostat
Universally compatible, Wi-Fi thermostat for single-stage equipment
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Lennox Smart Room Sensor
Room temperature balancing sensor for Lennox S40 Smart Thermostat
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Lennox Smart Air Quality Monitor
An air quality monitor for Lennox S40 Smart Thermostat that provides alerts, recommendations, and triggers air cleaning on demand

Customize the Air in Your Home
Lennox programmable thermostats are perfect for setting your heating and cooling schedule around your routine. Designed to be simple to operate, you can enjoy efficient, accurate control of your comfort year -round.

Smart Products +

Partnered for your convenience
Control4 is a leading control and automation platform which works
with thousands of smart devices integrating audio, video,
lighting, security, intercom, and of course climate control into a
seamless customer experience. Control4 gives you an easy-to-use
interface to control your thermostat.

Smart Products +

Partnered for your convenience
Amazon Echo/Dot is hands free and voice controlled. The Amazon Alexa voice service running on the Echo/Dot puts you in command of your home through voice controls that can be used with individual thermostats or groups. It can be used with Amazon Alexa compliant smart home devices.
Feels Like
The temperature on the thermometer isn't always the temperature
you feel. For example, an outside temperature of 85 degrees, plus
a humidity level of 75% means the temperature outside “feels like”
95 degrees.
The Lennox S40's Feels Like functions the
same way. It can control temperature levels with extreme precision. Simply set the Feels Like Temperature
you want, and it does the rest.
Smart Away
Smart Away mode works with an app on your family's smart
phones, to detect when the house is empty and automatically
changes the temperature to a more energy
-efficient setting.
And it detects when a family member is on the
way home to return the temperature to its regular setting. So even if your schedule isn't consistent, your
energy savings are.
Advanced Diagnostics & Remote Sharing
Keep your system at peak performance. Protect your investment and peace of mind with active monitoring of system operations through your Lennox S40 and L40 Smart Thermostat. This feature is free of charge and provides basic maintenance reminders, alerts you of potential issues, and can even allow you to remotely share diagnostics with your local Lennox dealer to troubleshoot and fix problems. This proactive care helps eliminate downtime and avoid unnecessary service visits and repair costs, ensuring nothing short of perfect air.
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Locate a Dealer
Find a Lennox Dealer in your area who can take care of your home comfort needs, or view a list of all Lennox Dealers.
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Download our Apps
Adjust your home's temperature anytime, anywhere from your mobile device with the Lennox Home App!