The Biggest Problem With Merseyside boiler installations, And How You Can Fix It
http://cornwall-net.co.uk/Several-Views-On-New-Boilers-That-You-May-Not-Have-Examined.html
This tank usually also has an electric element, a bit like a giant kettle. Again the lower the minimum output the more efficient the boiler will operate all year round. So in answer to the question 'Is Vaillant