# (S30/E30/M30) iComfort T-Stat

> Remote control for Lennox iComfort S30, E30, M30 smart thermostats. (iPhone/iPad app by Lennox Industries.)

- Source: https://appshunter.io/ios/app/s30e30m30-icomfort-t-stat/id1027192836 (this page in markdown: same URL + `.md`)
- Developer: [Lennox Industries](https://appshunter.io/developer/355049651)
- Category: Utilities
- Price: Free
- Rating: 4.70/5 from 45,331 App Store ratings · 264 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.0 · 112 MB
- Languages: American English
- Released: 2015-08-24
- Data updated: 2026-08-28
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/s30e30m30-icomfort-t-stat/id1027192836/reviews.md

## What is (S30/E30/M30) iComfort T?

Important Notice: A new and improved app is available!
We’ve launched Lennox Home—a next-generation app designed to provide a better, more seamless user experience.

Download Lennox Home Here
https://apps.apple.com/us/app/s40-l40-smart-t-stat/id6443907619
We highly recommend switching to Lennox Home for the latest features, updates, and support.


The (S30/E30/M30) iComfort T-Stat 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 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

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

## Key features

- Remote temperature adjustment
- Thermostat scheduling
- Smart Away™ Mode
- Feels Like™ Temperature
- Allergen Defender
- PureAir™ integration
- System alerts and warnings

## What do users think of (S30/E30/M30) iComfort T?

Overall sentiment: neutral

**Pros**

- 🚀 Remote control and monitoring
- 🔧 Flexible thermostat settings
- 📊 Detailed energy usage reporting
- 🛠️ Reliable HVAC system performance

**Cons**

- 🐛 Connectivity issues and unreliable app
- 🔍 Limited functionality compared to competitors
- 🕰️ Slow app response times
- 🤔 Unintuitive user interface

**Commonly reported bugs**

- App fails to connect to thermostat
- Temperature settings not registering
- Inconsistent display of HVAC status
- Unexpected resets of thermostat schedules

**Most requested features**

- Integrate with smart home platforms
- Customizable temperature alerts
- Improved scheduling and automation options
- Enhanced data visualization and analytics

## Recent user reviews (10 of 264)

All indexed reviews: https://appshunter.io/ios/app/s30e30m30-icomfort-t-stat/id1027192836/reviews.md

### 3/5 — When it works it’s ok but often disconnects

*2026-07-10, version 3.96.016*

This is the worst thermostat I’ve had. It goes offline or completely dead randomly. I have had Nest thermostats in other homes that don’t have these issues. Basically this is unreliable.

### 2/5 — It rarely works!

*2026-05-26, version 3.96.016*

It’s just ok, this app needs a lot of work. It rarely works before you get frustrated and don’t bother. It would be wonderfully convenient if it did but constantly has a hard time connecting to the thermostat. Frustrating as heck!!

### 1/5 — Garbage dated app

*2026-05-22, version 3.96.016*

Made by geezers who wrote this app in COBOL

### 1/5 — Awesome

*2026-05-20, version 3.96.016*

Very easy app to use very convenient too

### 1/5 — Lennox is Horrible

*2026-05-09, version 3.96.016*

I will NEVER buy Lennox again! Also Superior Air in Utah is HORRIBLE.

### 5/5 — Reassuring

*2026-04-18, version 3.96.016*

Worked to protect my house from afar during a brutally cold winter. Reassuring to know I could minimize and even avoid damage to pipes and all the possible damage that could occur during multiple days of below freezing temperature without being there.

### 5/5 — IComfort is better than Lennox Home app

*2026-04-05, version 3.96.011*

The Lennox iComfort app has all the detailed system operational features of the actual Lennox thermostat. The “updated” Lennox Home app dropped some of the operational options & has a less user friendly interface. For example, the option to select fan operation mode for each programmed cycle is available on the thermostat AND on this iComfort app…but NOT on the Lennox Home app (which only allows fan settings for an entire global program). This is the better app to use.

### 1/5 — Horrible App

*2026-03-29, version 3.96.011*

Zero

### 1/5 — Dishonest rating

*2026-03-25, version 3.96.011*

There is no way that Lennox has 45k reviews of this product let alone one that would warrant such glowing feedback. 

No other HVAC company is remotely close to having the number of reviews. Is obvious that they are manipulating the App Store to inflate positive reviews. 


This app is completely abysmal. They rarely updated or incorporate user community feedback.

### 5/5 — 80% but reliable

*2026-03-23, version 3.96.011*

I have had this system since 2021 and I am mostly satisfied with it. The connection has some issues at times but it’s mostly reliable. My biggest complaint it the lack of a fan mode and lack of manual override controls for the fan speed. Especially in “window season” this would be super helpful to have.

## Frequently asked questions about (S30/E30/M30) iComfort T

### What does the iComfort T-Stat app do?

This app allows you to remotely control your Lennox iComfort S30, E30, or M30 smart thermostat. You can adjust your home's temperature, set custom schedules, and monitor your HVAC system's performance from anywhere in the world.

### What are the key features of the iComfort T-Stat app?

Key features include remote temperature adjustments, the ability to edit and view your thermostat schedule, Smart Away™ Mode which uses your phone's location to optimize energy savings, and the Feels Like™ Temperature which accounts for humidity to maintain your desired comfort level.

### Is the iComfort T-Stat app free to use?

Yes, the app is free to download and use. However, you must own a compatible Lennox iComfort S30, E30, or M30 thermostat and have it connected to your home's Wi-Fi router to utilize its features.

### What are the compatibility requirements for the iComfort T-Stat app?

To use this app, you must own a Lennox iComfort S30, E30, or M30 thermostat. Additionally, the thermostat needs to be connected to your home's Wi-Fi router for the app to control its settings.

### How does the Smart Away™ Mode work?

Smart Away™ Mode utilizes the GPS location of your mobile phone to detect when your house is empty. It then automatically adjusts the temperature to a more energy-efficient setting. When a family member is detected on the way home, it reverts the temperature to its regular setting.

## Version history (last 5 releases)

### 3.96.016 — 2026-04-16

This app will be sunset soon. Migrate to the Lennox Home app for a better experience. Just sign in with your iComfort S30/M30/E30 credentials, your settings will transfer automatically so you can keep controlling your S30/M30/E30 thermostats remotely.

### 3.96.011 — 2025-04-08

Added notice about migrating to ‘Lennox Home’ App for better user experience.

### 3.96.005 — 2024-10-28

* For this release Lennox has included Low Global Warming Potential (GWP) refrigerant detection notifications
* Improved connections from thermostats to mobile APPs
* Support for Apple's latest OS version
* Bug Fixes

### 3.92.009 — 2023-11-08

Bug fixes.

### 3.89.500 — 2023-09-15

* Improved support for newer versions of iOS
* Bug Fixes

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## More apps by Lennox Industries

- [Lennox](https://appshunter.io/ios/app/lennox/id355049647)
- [Lennox iComfort Wi-Fi](https://appshunter.io/ios/app/lennox-icomfort-wi-fi/id527608198)
- [Lennox Prodigy](https://appshunter.io/ios/app/lennox-prodigy/id802832431)
- [LennoxPros](https://appshunter.io/ios/app/lennoxpros/id870321742)
- [VRF & Mini-Splits](https://appshunter.io/ios/app/vrf-and-mini-splits/id916090359)
- [iComfort Dealer Setup](https://appshunter.io/ios/app/icomfort-dealer-setup/id1027083656)

All apps by Lennox Industries: https://appshunter.io/developer/355049651

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-28.*