Use APKPure App
Get Lennox Smart Tech old version APK for Android
Set up Lennox S40/L40/M40/E40 Thermostats & IAQ accessories using this app.
With the Lennox Smart Tech App, you'll have the latest technology to more quickly and easily install and service a fully communicating home comfort system with the Lennox S40/L40/M40/E40 Smart Thermostat. You can reliably run tests, diagnostics, and change system settings directly from your smartphone without the back and forth from equipment to thermostat.What's New in the Latest Version 4.33.155
Last updated on Feb 27, 2025
• Added support for L40 thermostat along with S40 thermostats.
• Bug fixes and Improvements.
Translation Loading...
Lennox Smart Tech
4.33.155 by Lennox International Inc
Mar 26, 2026