- providing hassle-free 10-year warranty coverage against any manufacturing defects or malfunctions. To maintain the warranty validity, it is necessary to hire a certified HVAC installer for the proper installation. Failure to use a professional HVAC installer may void the warranty. If the thermostat is not professionally installed, the item cannot be returned or refunded. How to register for Warranty, instruction included in the box.
- Features a 7-inch high-definition color display for easy readability. User-friendly touchscreen for easy system configuration and maintenance alerts. Offers multiple schedules, One-Touch Away Mode, and Smart Away feature using geo-fencing technology.
- Compatible with 4-wire standard thermostat wiring, use shielded thermostat cable for noise interference prevention. Works with most 24VAC furnaces, air conditioners, air handlers, and heat pumps (up to 3 stages of heat and 2 stages of cooling) except communicating HVAC equipment other than LENNOX.
- Compatible with conventional HVAC systems with the optional Equipment Interface Module (EIM) for control. Smart Zoning System (iHarmony) allows whole-home zoning with complete control from the S40 Smart Thermostat.
- Weather-On-Demand provides live weather data and seven-day forecasts. Install and configure quickly with the Lennox Smart app. Installer setup screens enable quick system configuration without a manual.
- Run tests on the complete system or individual components for maintenance and troubleshooting. Service Dashboard enables real-time monitoring of installed smart systems.
- Enhance temperature and air quality control with advanced accessories like Smart Room Sensor, Smart Air Quality Monitor, and Wireless Extender. Maintains efficient operating conditions by receiving information from digital controls and PureAi S Air Purification System.
- Advanced communicating controls in specific heating and cooling units, PureAir S Air Purification System and Healthy Climate HRV/ERV (Heat/Energy) Recovery Ventilators transmit information about various operating parameters to the thermostat to constantly maintain the most comfortable and efficient operating conditions.
The Lennox S40 Smart Thermostat is the ultimate solution for optimal comfort, performance, and efficiency. Connects to all Lennox communicating products, automatically configuring and controlling your heating/cooling system. Enjoy hassle-free setup with model and serial number recognition. Enhance your home comfort with advanced accessories like the Smart Room Sensor, Air Quality Monitor, and Wireless Extender. This thermostat maintains efficient operating conditions by receiving information from digital controls and the Pure Air. It also supports conventional HVAC systems and offers Smart Zoning capabilities. With a user-friendly touchscreen, multiple schedules, Smart Away feature, live weather data, and easy installation via the Lennox Smart Technician app, this thermostat ensures a personalized and convenient experience. Troubleshooting, system warnings, and maintenance alerts are displayed on the intuitive interface. The S40 Smart Thermostat is compatible with most 24VAC furnaces, air conditioners, air handlers, and heat pumps, providing a complete total-comfort system. 7” Display Capacitive touchscreen display Screen resolution: 1280 x 800 Screen ratio: 16:9 Dots per inch: 72dpi ****providing hassle-free 10-year warranty coverage against any manufacturing defects or malfunctions. To maintain the warranty validity, it is necessary to hire a certified HVAC installer for the proper installation. Failure to use a professional HVAC installer may void the warranty. If the thermostat is not professionally installed, the item cannot be returned or refunded. How to register for Warranty, instruction included in the box.***
