Lennox S40 Smart Thermostat

Lennox S40 Smart Thermostat, Touchscreen, Communicating, WiFi, Programmable, 3 Heat/2 Cool The S40 Smart Thermostat recognizes and connects to all Lennox communicating products to automatically configure and control the heating/cooling system (based on user-specified settings) for the highest level of comfort, performance and efficiency. We just had this thermostat installed last year. It is practically brand new. Unfortunately our coil went on our Lennox A/C and we have to replace our entire system.