SunStat Connect

With this app, the SunStat Connect thermostat lets you control your electric floor heating remotely, allowing you to adjust your floor heating settings at any time from anywhere. Additional features let the system compensate for weather changes to save on energy use.

- Multiple locations, multiple devices per location.
- Adjust the temperature from your phone so if you forget to adjust it before you leave the house, it's not too late.
- Away mode. Turn off all the thermostats in a location when you go on vacation and turn them back on before you get home.
- Receive email notifications if there's a problem with any of your thermostats.

New features:
- Easy-to-use remote scheduling.
- Daily and monthly energy usage monitoring.

What's New

Version 0.0.47

Support for the tekmar Wi-Fi Thermostat 563
- Heat pump "Emergency" mode
- Minimum floor temperature setting
- Fan control
- Humidifier and dehumidifier control​

Customer Reviews

Extremely simplistic


It does do what it says - it allows you to control your thermostat remotely.

Pros: It does this well, and actual feedback from the thermostat is near-immediate. Additionally, when you change settings via the app, the thermostat receives your change nearly instantly (below one second). This is great.


1. it doesn’t allow “tight” control of temperature (via up/down arrows, for example). You only select the temperature on an analog “dial”, and it’s hard to get precise.

2. Worse, it doesn’t save credentials - you must log in every time. If you follow good security practices and use different passwords for every WWW site, this becomes very painful very quickly. Most apps allow you to save credentials (and some then allow a fingerprint to validate that you’re you). This is a big deal, and makes use of the app downright unpleasant.

3. No integration with 1Password. If they integrated with 1Password (which many apps do), this would negate the issues with #2. But they don’t …

This definitely doesn't have the bugs that the other reviewer's made.

Phone nerd1977

This is a pretty good app. It kind of wants to be like a Nest. It has already logged me out and made me log back in, but I think over time the problem will get better. Overall, this is a good app that's a little buggy but if they keep tweaking it I think it could be amazing and the gold standard for a floor warming thermostat. I mean I can adjust the temperature from anywhere on the planet without a Wi-Fi connection. That's cool

Needs major improvement


This app needs major fix on annoying bug!
After each update you need to and must re-enter all your information with login and passwords to use this app!
Please fix this horrible bug ASAP


Watts Water Technologies, Inc
24 MB
Requires iOS 10.3 or later. Compatible with iPhone, iPad, and iPod touch.
Age Rating
Rated 4+
© Watts Water Technologies, Inc. 2016


  • Family Sharing

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

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