New Lennox Home App

Hello Homeowners,

From the first connected iComfort® wifi thermostat to today’s smart home innovations, our mission has remained the same: helping you stay comfortable, in control, and confident in your home.

As technology evolves, so do the expectations for reliability, security, and connectivity. That’s why we’re taking an important step forward.  A step that allows us to deliver a smarter, more dependable experience for years to come.

Introducing the next generation of Lennox reliability

We’re proud to introduce our 4th‑generation platform, built around the needs of homeowners to meet today’s standards for performance, security, and always‑on connectivity.

Why does my S30 app not work anymore?

Starting June 1, users will be required to transition to the new app via an in-app pop-up.

Thermostat Customers should switch to our New Lennox Home App supporting all thermostats in the 3rd and 4th generations including S40, E40, M40, L40, S30, E30, and M30.

Beginning in August, we plan to initiate the app removal process from the Apple App Store and Google Play Store.

Will the new Lennox Home App support my old thermostat?

It will support S40, E40, M40, L40, S30, E30, and M30.

How do I connect my old thermostat to the new App?

Just sign in with your iComfort S30/M30/E30 credentials, your settings will transfer automatically so you can keep controlling your thermostats remotely.

What will occur at the launch of the new app on my phone/tablet?

When first launching the current S30/E30/M30 app starting– 4/7/2025 – there will be two choices:

1. ‘Download App’ or "Remind me Later"

2. Upon choosing ‘Remind me Later’, you will be able to use the app before seeing this pop up again.  At the 2nd pop up you will be encouraged to download the new app.

3. The S30/E30/M30 App will be supported until Fall of 2025; therefore, we encourage the shift over to the new app sooner than later.

What if I have both the iComfort S30/E30/M30 app and the Lennox Home App, and I have 2 unique accounts- can these accounts be combined?

Yes! For the best experience, we encourage you to consolidate your accounts into one single account.

 1. Remove your thermostats from your current account
First, you’ll need to disconnect your existing (3rd‑generation) thermostats from your current S30 account.

• You can either remove each thermostat individually, or

• Use the “Move Out” option on one thermostat to remove all systems in your home at once.

2a. How to remove a single thermostat (Unregister)
On your thermostat (or in the iComfort app):

• Tap Menu → Settings → [your name] → Unregister System
  This removes just that thermostat from your current account.

2b. How to remove all systems at once (Move Out)
On your thermostat:

• Tap Menu → Settings → Account → Move Out
  This removes your home and disconnects all linked systems in one step.

3. Add your thermostats to the new Lennox Home app
Open the newer Lennox Home App (S40/L40/E40/M40) and add your thermostats.

• You can do this by entering a PIN, or

• Simply log in using the same account you plan to use going forward.

4.Add your thermostats to the new app
Once everything is removed, open the Lennox Home app and add your S30/E30/M30 thermostats.

5.Sign in and finish setup
Log in with your chosen Lennox Home account, and your thermostats will be connected to the new system.