Install the Lennox Home App which, connected to the Lennox S40 Smart Thermostat, homeowners can monitor, control, and balance room temperatures from anywhere using the app.
Customize your comfort by adjusting your sensor participation settings. During the busiest time of the day when your Lennox Smart Room Sensor is active, you may want to have multiple sensors participating; for example, one in the living room and one in the office.
Decide if you prefer the occupancy sensor to be on or off. If you choose off, the temperatures will consistently be averaged between the main thermostat and the Smart Room Sensors. Go to Menu > Settings > Devices and look for the sensor you want to disable, select sensor and turn off.
• OFF - When the occupancy feature is turned off, the thermostat will always include the sensor in temperature averaging.
• ON - When the occupancy feature is turned ON, the thermostat will only include the sensor in temperature averaging if the room is occupied.
FREQUENTLY ASKED QUESTIONS
Perfect comfort is something we want you to experience long after you’ve purchased your Lennox® product. That’s why we offer a collection of resources that make it as easy as possible for you to get the answers and support you need.


