
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.
7 people found this review helpful

Z.G. G.
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Edited. horrible. I pressed ok on the boiler and since then app lost internet connection! absolutely horrible brand. regret buying it big times! All working as expected now after getting serwisant in to set up thermostat. Now the humming noise is gone - nobody told me it would be the solution. Regarding app use , Hive has better features like diagram to show when burner went off and for how long it did at the time. Vicare only shows amount of gas in bar chart. Not very useful.
2 people found this review helpful
Viessmann IT Service GmbH
January 2, 2025
We would like to take a closer look, analyze it and find a solution for you! Please send us an email with a short description or photos / screenshots and the serial number of communication module to customer-contact+Z.G.G.@viessmann.com We apologize for any inconvenience, Z.G. G.! #WeCare

-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.
2 people found this review helpful
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