Anonymous
The new update in the summer wasn't understood by viessmann engineers. It took months for the Eco mode to be introduced. Before that it was impossible to have water heating on anything but constant, which was extremely expensive. Now I use the Eco mode I have better control of costs. Viessmann sent an engineer who had no clue how to work the new software. 4 months later, the Eco mode appears on the app and problem solved. If not for the permanent 'on' issue, this boiler is simply outstanding.
2 years ago
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Viessmann Limited has a 4.3 average rating from 1,036 reviews

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