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.
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.
Run tests on the complete system or individual components for maintenance and troubleshooting. Service Dashboard enables real-time monitoring of installed smart systems.
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.
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.
Sophisticated communication systems in select heating and cooling devices, including the PureAir S Air Purification System and Healthy Climate HRV/ERV (Heat/Energy) Recovery Ventilators, relay data regarding different operational metrics to the thermostat, enabling the continuous optimization of comfort and efficiency in performance.
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.
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.