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Get Smart Tech App old version APK for Android
This app must be used when installing Lennox S40 Thermostat & IAQ accessories.
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 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 4.27.120
Last updated on Mar 3, 2024
At Lennox, we are continuously improving our products to better support your needs. For this release, we have fixed some minor bugs. In addition, we removed support for 32-bit mobile devices.
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Smart Tech App
4.27.120 by Lennox International Inc
Mar 3, 2024