we had an engineer in from e-on to fix the hot water and it still wont allow us to have a shower or bath in comfort.it starts of hot and then i turns freezing.he explained it was due to some kind of plates in the back that need replacing yet chargeable, yet we pay insurance through e-on but have to pay out more.could you give me an approx cost for this.linear 24

mr.b.walters, January 2011