Product Comparison
Advanced Diagnostics & Remote Sharing
Protect your investment and keep your system at peak performance with advanced diagnostics that can be remotely shared with your local Lennox dealer to troubleshoot issues and avoid unnecessary service visits.
S40 Smart Thermostat
S30 Smart Thermostat
Pairs with Lennox Smart Accessories
Complement your system with our suite of technologically advanced accessories to more precisely and efficiently maintain the temperature and air quality in your home: Smart Room Sensors, Smart Air Quality Monitor and Wireless Extender.
S40 Smart Thermostat
Precise Comfort® Plus
Works with Lennox-brand digitally-enabled variable-capacity equipment to offer the highest level of comfort and overall system performance
S40 Smart Thermostat
S30 Smart Thermostat
Flexibility
Compatible with Lennox-brand non-digitally-enabled equipment and other brands of heating and cooling equipment
E30 Smart Thermostat
M30 Smart Thermostat
Amazon Alexa Compatible
Use voice commands to control your HVAC system with Amazon Echo or Echo Dot devices
S40 Smart Thermostat
S30 Smart Thermostat
E30 Smart Thermostat
M30 Smart Thermostat
Apple HomeKit Compatible
Compatible with Apple HomeKit for home automation
S30 Smart Thermostat
E30 Smart Thermostat
Google Assistant Compatible
Say "Hey Google" to control your HVAC system with your voice
S40 Smart Thermostat
S30 Smart Thermostat
E30 Smart Thermostat
M30 Smart Thermostat
IFTTT Compatible
Compatible with this free service, enabling actions and triggers for your Lennox Smart thermostats
S30 Smart Thermostat
E30 Smart Thermostat
M30 Smart Thermostat
Control4 Compatible
Our smart thermostats effortlessly integrate with premium smart home systems like Control4
S30 Smart Thermostat
S40 Smart Thermostat
E30 Smart Thermostat
M30 Smart Thermostat
Peak Monitoring
Programmable schedules save energy when no one is home. Additional settings to manage energy usage can be enabled for demand response, when offered through a utility provider
S40 Smart Thermostat
S30 Smart Thermostat
E30 Smart Thermostat
M30 Smart Thermostat
Filter Reminder
Reminds homeowner when it is time to change the filter
S40 Smart Thermostat
S30 Smart Thermostat
E30 Smart Thermostat
M30 Smart Thermostat
Automatic Changeover
Automatically changes between heating and cooling to keep the house comfortable in spring & fall
S40 Smart Thermostat
S30 Smart Thermostat
E30 Smart Thermostat
M30 Smart Thermostat
Color Touchscreen
Large, easy-to-use display with adjustable brightness
S40 Smart Thermostat
S30 Smart Thermostat
E30 Smart Thermostat
Run-Time Report
Shows how long the heating or cooling system has run
S40 Smart Thermostat
S30 Smart Thermostat
E30 Smart Thermostat
M30 Smart Thermostat
Humidity Control
Works with whole-house humidity-control systems to adjust the home's humidity level
S40 Smart Thermostat
S30 Smart Thermostat
E30 Smart Thermostat
M30 Smart Thermostat
Remote Control
Control all thermostat functions from anywhere using a mobile device
S40 Smart Thermostat
S30 Smart Thermostat
E30 Smart Thermostat
M30 Smart Thermostat
Weather-On-Demand
Provides current outdoor temperature and a five- or seven-day forecast
S40 Smart Thermostat
S30 Smart Thermostat
E30 Smart Thermostat
Screen Saver
Variety of screen savers, including weather videos or picture uploads, enhances wall appeal
S40 Smart Thermostat
S30 Smart Thermostat
E30 Smart Thermostat
Basic Alerts
Automatically emails alerts to homeowners and dealer if the system needs service or maintenance
S40 Smart Thermostat
S30 Smart Thermostat
E30 Smart Thermostat
M30 Smart Thermostat
Advanced Alerts
Monitors all of the system components and uses advanced diagnostics to identify the issue
S30 Smart Thermostat
Climate IQ® Technology
Monitors indoor and local outdoor conditions and uses the AC or heat pump to automatically remove excess humidity to create a more comfortable and healthier home
S40 Smart Thermostat
S30 Smart Thermostat
E30 Smart Thermostat
Smart AwayTM Mode
Uses the location services on the homeowner's phone to detect when they come and go, adjusting the temperature accordingly to save energy and maximize comfort
S40 Smart Thermostat
S30 Smart Thermostat
E30 Smart Thermostat
M30 Smart Thermostat
Schedule IQTM Technology
Creates a schedule using Smart Away geo-fencing capabilities and homeowner inputs to maintain comfort when the home is occupied and help save energy when it's not
S40 Smart Thermostat
S30 Smart Thermostat
E30 Smart Thermostat
M30 Smart Thermostat
Feels LikeTM Setting
The Feels Like™ feature creates the temperature you want to feel, not just the temperature you set—much like the "Feels Like" temperature in a weather report. So when you set it to 72 F, it feels like 72.
S40 Smart Thermostat
S30 Smart Thermostat
E30 Smart Thermostat
M30 Smart Thermostat
Auto (Perfect Temp)
Like Auto Changeover, the system automatically decides between heating and cooling, but requires just one setpoint
S40 Smart Thermostat
S30 Smart Thermostat
E30 Smart Thermostat
Allergen Defender
Monitors the air quality and pollen levels of local ZIP code and automatically turns the fan on to clean the home's air when outdoor levels are high
S40 Smart Thermostat
S30 Smart Thermostat
E30 Smart Thermostat
Performance Report
Summarizes the performance of the system for the day and hour and sends monthly summary emails showing month-to-month heating and cooling usage comparison and active service alerts
S40 Smart Thermostat
S30 Smart Thermostat
E30 Smart Thermostat
M30 Smart Thermostat