
Christo “Michael the Mountainous” Giova
It's Spectacular! Your team crafted an incredible UI to be very user / customer friendly, there shall be Hot Water at the ready when I see on your app and I turned on my shower and within 10 seconds it was flowing at the desired temperature! THE FUTURE IS NOW! Edit: I just thought of this, to the customer that would like this, go into the settings and set daily start & stop periods to save on gas, Long story short it's super user intuitive! ENJOY! 🔥💧🛁🧖🏻♀️

Matthew Corum
I have spoke with customer service and went through all of their steps on the phone and no one could get it to connect to the app even though the wifi finds the boiler. Now 8 months later after various app updates, nothing is fixed and it still won't establish connection with the app. Always finds the boiler via wifi but the ViCare app will just say searching for device or whatever. This is probably the worst app I have dealt with with even cheap products having no problem pairing to an app.
5 people found this review helpful

-log [H]
Quite good but with one design flaw. Having two levels of desired warm temp, comfort/normal is good. Having a quick selection to extend the heating on period until the next time set is great. But it's poor that manually changing the target temp during a period simply changes the value of comfort/normal/reduced for all thereafter. I can set these values separately elsewhere. If I manually change the temp during the current period I expect it to last ONLY for the current period. Please consider.
Viessmann IT Service GmbH
December 22, 2025
Hello -log [H], many thanks for the constructive feedback! We have taken up your suggestion and will check it during further development. #WeCare