Vokera Unica 28 HE

Hi l am an installer. I use vokera boilers and viessmann , I have been fitting the unica range for 6 years now, please note the unica & unica i are different boilers. The unica I has only been about for nearly a 1 year, but I do in warranty repairs for them and if there were any problems in their armour I would know. And there is not!!!! not one of the 100-200 unica's we have fitted have gone wrong. If you have a horror story then its installer related. They are a good boiler.