The Lennox S40 Smart Thermostat provides touchscreen control, scheduling and connected comfort features for compatible Lennox communicating heating and cooling equipment. Its 7-inch display brings temperature settings and system information together, with features such as Smart Away and maintenance alerts.
AirZone checks the indoor and outdoor equipment, control wiring and accessories before recommending the S40. An optional Equipment Interface Module can support many conventional 24-volt systems, with different capabilities from a fully communicating Lennox installation. The exact equipment combination and available features need to be confirmed.
Supported connected functions include remote access through the Lennox Home app and require the appropriate account and network connection. We help you understand the controls and setup for your system so you can use the scheduling and comfort features that suit your home.
