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Screenshots

  • Comfort Sync® Thermostat screenshot 1
  • Comfort Sync® Thermostat screenshot 2
  • Comfort Sync® Thermostat screenshot 3
  • Comfort Sync® Thermostat screenshot 4

About Comfort Sync® Thermostat

"This app is designed to be used with the Comfort Sync A3 thermostat. The Comfort Sync® A3 thermostat doesn’t just control temperatures like a conventional thermostat, it automatically adapts to individual lifestyles and to the changing environment to help deliver precision comfort, energy savings and peace of mind. The Comfort Syc (Sync) 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 • Away Sync™ 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 Comfort Sync True Temp™ 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” (a home's ""True Temp"" will be"") 72 degrees year-round • Allergy Sync™ on the Comfort Sync A3 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 • The thermostat’s advanced warning system predicts problems before they happen and alerts the homeowner and your dealer if enabled • Get alerts, reminders and advanced warnings from your system wherever you are You must own a Comfort Sync A3 thermostat to use this app. The Comfort Sync A3 thermostat must also be connected to your home’s Wi-Fi router before the app can control the settings. We truly appreciate your questions and comments. Please keep sending your suggestions to [email protected] or @AskDaveLennox on Twitter *Continued use of GPS in the background can dramatically affect battery life"

Ratings & reviews

4.7

1.8K ratings

5 ★ 85% 4 ★ 8% 3 ★ 2% 2 ★ 1% 1 ★ 3%

What’s new

Version 1.10.005 · Updated April 16, 2026

This app will be sunset soon. Migrate to the MyHomeComfort app for a better experience. Just sign in with your Comfort Sync® credentials, your settings will transfer automatically so you can keep controlling your A3 thermostat remotely.

App privacy

The developer, Allied Air Enterprises inc., reported these privacy practices to Apple.

Data Not Collected

The developer does not collect any data from this app.

Alternatives to Comfort Sync® Thermostat

Looking for apps like Comfort Sync® Thermostat? Here are 6 similar apps on the App Store. The highest rated is (S30/E30/M30) iComfort T-Stat (4.7/5), and all 6 are free to download.

Comfort Sync® Thermostat vs. alternatives
App Rating Price Last updated Compare
Comfort Sync® Thermostat 4.7 / 5 (1,883 ratings) Free April 16, 2026
(S30/E30/M30) iComfort T-Stat 4.7 / 5 (45,345) Free Apr 16, 2026 Compare
Hx™ Thermostat 4.4 / 5 (1,469) Free Nov 14, 2025 Compare
Lennox Smart Tech 4.5 / 5 (60) Free Mar 27, 2026 Compare
CORE Service 3.6 / 5 (19) Free Oct 5, 2026 Compare
Lennox Home 4.6 / 5 (47,949) Free Aug 12, 2026 Compare
Ruud 4.6 / 5 (1,085) Free Sep 23, 2026 Compare

Compare Comfort Sync® Thermostat with the top alternatives: ratings, updates, ASO score and keyword gaps →