on 20 December 2010
The book goes into tremendous detail, loads of information. I just wanted it to explain how important it is to USE YOUR SOLAR RIGHT - ie let the heat from the Sun into your water before topping up with your boiler (or whatever). ..... putting the boiler on for an hour or so after 5pm should do this fine - and then not again till 5 the next day! This should provide all the hot water you and your household will need.