Experience next-level home comfort with the Lennox S40 Smart Thermostat—the most advanced control system Lennox has ever built.

• Large, vivid 7” touchscreen with weather-themed screen savers and photo display

• Remote control from anywhere using the Lennox Home app on your phone, tablet, or desktop

• Precise Comfort® Plus technology holds temperatures to within 0.5° while adapting airflow and humidity in real time

• Schedule IQ™ & Smart Away™ features learn your routine and adjust automatically for comfort and savings

• Connected to your voice assistants — works seamlessly with Amazon Alexa and Google Assistant

• “Feels Like” temperature setting balances temperature and humidity to create the exact comfort you expect

• Advanced air quality control with Allergen Defender and optional Lennox Smart Air Quality Monitor

• Smooth Setback Recovery anticipates temperature needs and begins adjusting ahead of schedule

• Smart Room Sensor compatible — manage comfort in specific rooms, not just by zone

• Auto changeover between heating and cooling, based on indoor conditions

• Energy reports track system usage and trends for better insight and control

• Remote diagnostics & troubleshooting allow Lennox dealers to resolve many issues without a service call

• One-touch Away Mode helps save energy instantly when you’re out

• Humidity control integration for year-round comfort in Edmonton’s dry winters

• 10-Year Limited Warranty when installed with communicating Lennox equipment

Pair the S40 with Lennox Smart Accessories for the ultimate in clean, balanced air across your home. It’s not just a thermostat—it’s the command center of your home comfort system.