This app is designed to be used with the Lennox iComfort S30, E30 and M30 Thermostat.

The Lennox iComfort S30, E30 and M30 thermostat doesn’t just control temperatures like a conventional thermostat, it automatically adapts to individual lifestyles and to the changing environment to help deliver the ultimate in comfort, energy savings and peace of mind. The Lennox iComfort App allows the user to control their HVAC system from anywhere in the world as though they were standing in front of their own thermostat.

App Features

• Adjust and view your house temperature from anywhere in the world
• Edit and view your thermostat schedule
• Smart Away™ Mode* uses the location on your mobile phone to detect when the house is empty and automatically change the temperature to a more energy-efficient setting. When a family member is on the way home it automatically returns the temperature to its regular setting

• Much like a weather report will use a temperature and wind speed to determine a Wind Chill index to indicate the perceived temperature, the iComfort S30, E30 and M30 Feels Like™ Temperature takes into account indoor and outdoor temperature and humidity to make a home feel exactly like the homeowner desires. Therefore, when the thermostat is set to 72 degrees, a home will “Feel Like” 72 degrees year-round

• Allergen Defender on the iComfort S30 and E30 (not in the M30) gives immediate allergy relief by monitoring air quality and pollen levels outside. When high levels of pollutants and allergens are detected, the fan automatically turns on to keep the home’s air clean

• PureAir™ is a whole-home solution that means cleaner air in every room and every breath. It filter out particles, combats germs, and fights odors.
• The thermostat’s advanced warning system predicts problems before they happen and alerts the homeowner
• Safety protection notifies you if your house gets too hot or too cold

• Get alerts, reminders and advanced warnings from your system wherever you are

You must own a Lennox iComfort S30, E30 and/or M30 thermostat to use this app. The Lennox iComfort S30, E30 and M30 thermostat must also be connected to your home’s Wi-Fi router before the app can control the settings. For more information go to

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

*Continued use of GPS in the background can dramatically affect battery life

What’s New

Version 3.86.001

Performance and connectivity improvements

Ratings and Reviews

1.7 out of 5
1K Ratings

1K Ratings

K-Clubs ,

Still needs work

I installed Lennox S30 last year with my XC25s and have seen the app keep having same technical issues all along. Very slow log in and a lot of times won’t pull tstats data and stays in the dead grey screen. Or menu settings that are different on the tstats comparing to the app, it seems like the settings don’t get updated between the two platform. I think Lennox needs to hire developers who are better in developing smoother and more reliable apps. In addition they had some sort of server issues for the past few days and it tells me there could be some security breach that needs Lennox serious attention.

All in all a year or two should be more than enough for the developers to figure bugs out of the systems. I love my S30s and I had Honeywell lyrics in the past and had no problems like what I have with this app.

Kenatcman ,

Not as bad as others say but not great

First - don’t believe all the negative reviews. There is a generate pin option. You just have to scroll down on the menu on the left side to see account. Don’t login from the thermostat. If you did, pick move out to reset login. Next create an account on your computer. Then use the menu on the thermostat to create a pin. Enter that on the web account and it will link your thermostat to your account. Only then should you use the mobile app and log in. You will see the thermostat.

The controls work great and the variable speed is unique. I gave it only a three for two reasons. First because the install was clunky and the UI requiring a scroll down is horrible. Second because there is. It an open API and no way to link this to my SmartThings home. There isn’t even an IFTTT channel. Yes there is an Alexa skill but who cares - I can’t automate stuff like i can as a SmartThings or IFTTT device. There is clearly a way to make one since they had to use some sort of api calls to write the Alexa skill and it stinks that they wont document it and open it up for others to use. It would be a piece of cake to write a SmartThings device driver if they did, and I see little harm to them in doing so. So no more stars from me until that is fixed.

Pad10one ,

App crashes after IOS update. - FIXED !!

The app is now fixed. Thank you. The app is working great. I love being able to adjust my heat or A/C when away from home. The user interface is easy to use and does everything that is claims to do. Now a 5 star rating. Also when I called support they where very courteous and helpful.

Wish I could get a hold of someone in support for this app but you can’t. It is unusable. The app crashes. When I open the app, it signs on, then at the point that it is trying to retrieve information for the thermostat it crashes. So it is not usable. Why have a WiFi thermostat when you can’t use it as it was intended? Someone needs to look at this and fix it. This problem started recently in the last few weeks and the app was working fine prior to that. So what is wrong? Update: Got ahold of support today and this is a known problem after the last app update. They are working on the fix and will push it out as soon as possible. I was glad to hear that since I like this app and use it often even within my own house. Changing my star rate from 1 to 4.

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 Not Collected

The developer does not collect any data from this app.

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


  • Family Sharing

    With Family Sharing set up, up to six family members can use this app.

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