Logics for me too. love em!! as for worcester they can go swivel fed up paying top money for supposedly the best boiler and having to build the danm thing straight out the box! Plastics are toot and pin hole, heat exchanger falls to bits fan's blow when the trap blocks up as a result of the naff heat ex. They bark orders at you to install x amount before they give you the extended warrenty. Hello your supposed to be the best boilers now give me my danm warrenty!! oh yeah there also german. hmmmmmmm maybe thats why they are falling to bits. they are trying to bankrupt us through boiler spares so we cant afford an army then they will attack! You have all been warned lol