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Smart Tech App icon

4.27.120 by Lennox International Inc


Mar 3, 2024

About Smart Tech App

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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Additional APP Information

Latest Version

Request Smart Tech App Update 4.27.120

Uploaded by

Hashmatullah Azizi

Requires Android

Android 8.0+

Available on

Get Smart Tech App on Google Play

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Smart Tech App Screenshots

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