?DEALER FAQs

DEALER SUPPORT PAGES

S40 Accessories

Getting Started

Getting Started

Installing the S40 Smart Thermostat

If you don't already have it, start by downloading the Lennox Smart Tech App to install the thermostat and commission the system. Lennox Home App is required to install the Lennox Smart Room Sensor, Lennox Smart Air Quality Monitor and Lennox Wireless Extender.
Google Play Google Play
Apple Play Apple App Store

Step 1 of 4

Step 2

In either the thermostat or Lennox Home App, remember to:
  • 1: Enter your dealer ID
  • 2: Connect to WiFi
  • 3: Walk the homeowner through accepting advanced diagnostics and remote sharing permissions

Step 2 of 4

Step 3

Need Help with Installation?

Click on the Resources section of this page to access the installation guide and troubleshooting videos.

Step 3 of 4

Step 4

Installing a Smart Device in a Home?

Open the Lennox Smart Technician App to install the Smart Room Sensor, Smart Air Quality Monitor and Wireless Extender. Follow the screen prompts until you reach Service Center. To add a smart device, select Equipment Settings > Add Device. Follow the screen prompts to add the smart device.

Step 4 of 4