Please help!! New Baxi boiler fitted, heating cant be on for more than an hour without the boiler starting to hum and vibrate which develops into the pipes vibrating at such an incredibly loud racket, like a pack of apes trying to get out! If I switch a tap on it stops, but starts again instantly. The only cure is to switch boiler off and let everything cool before switching on again and then the whole cycle repeats. what the hell is wrong, the plumber who fitted it is useless and not even corgi reg! Also since i moved in every time washing machine on every now and then during the cycle a loud thud can be heard like someone givng the pipes/tank a kick? what is this and is it linked to the other?