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.
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.
Run tests on the complete system or individual components for maintenance and troubleshooting. Service Dashboard enables real-time monitoring of installed smart systems.
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.
Sophisticated communication mechanisms in particular heating and cooling systems, the PureAir S Air Purification System, and the Healthy Climate HRV/ERV (Heat/Energy) Recovery Ventilators relay details regarding different operational metrics to the thermostat, ensuring that optimal comfort and efficiency are consistently achieved.
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.
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.