(S40) Smart T-Stat 4+

Mobile Control & Monitor

Lennox Industries

    • 4.6 • 896 Ratings
    • Free

Screenshots

Description

The Lennox Smart Thermostat App allows you to remotely access and control your Lennox S40 Smart Thermostat and advanced accessories from anywhere in the world. Whether it’s adjusting your home’s temperature or schedule, monitoring your indoor air quality or balancing room temperatures, the control is all at your fingertips.
You must own a Lennox Smart Thermostat (S40) to use this app. The Lennox Smart Thermostat must also be connected to your home’s Wi-Fi router before the app can control the settings. For more information go to https://www.lennox.com/products/comfort-controls/thermostats

We truly appreciate your questions and comments. Please keep sending your suggestions to consumeraffairssocial@lennoxind.com or @AskDaveLennox on Twitter.

What’s New

Version 4.31.533

We’ve added updates to enhance performance, reliability, and compatibility with the latest HVAC systems. Enjoy seamless comfort and peace of mind knowing your system is always up to date.

Ratings and Reviews

4.6 out of 5
896 Ratings

896 Ratings

pip2025 ,

Takes time to learn

Transition from old to new, from old wifi thermostat with gas furnace & ac to this thermostat with new furnace & heat pump is a learning experience. Thermostat has many features - heat pump takes much longer to raise temperatures, I thought thermostat or systems not working right, or not using thermostat correctly. Suggest use manual settings for a time, and then gradually move to more advanced features ie schedules, away, humidity. I love telling Alexa “set the heat to 68”, or ‘Alexa what’s the inside temperature? One observation is if you set a significantly higher temp, ie from 60 to 68 F, Gas furnace, emergency heat kicks in. One workaround is to go up in smaller increments. The weather forecast on the screen is nice. One suggestion would be to have screen display if which system, heat pump or furnace, is operating.

jproy1957 ,

Very unreliable device

Very unreliable device

Trud8833 ,

Settings Glitch

When I hit settings it closes app

App Privacy

The developer, Lennox Industries, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer's privacy policy.

Data Linked to You

The following data may be collected and linked to your identity:

  • Location
  • Contact Info
  • User Content
  • Identifiers
  • Usage Data
  • Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

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