I am very satisfied with the quality of the Viessmann boiler, however, I am less than satisfied with the installation done by their Contractor/Sub-Contractor. It was my intention to have the boiler fitted in my garage but I was strongly advised against this "due to the presence of electrical installations". As a result, the boiler was installed in my kitchen, resulting in a kitchen wall unit destroyed, broken tiles, exposed pipework, exposed plasterwork, other damage and reduction in sink draining board area. Opinions given by other tradesmen suggest that garage installation was not a problem, especially if a site survey had been undertaken before commencement of work.