Hi Folks,

Can anyone suggest a reason why when I open my hot tap fully I get air
bubbles in the hot pipe, yet if it is run slowly there are none.

I've already tried looking at the hot output from the top of the hot
water cyclinder (which is in the loft beside the cold water tank) to
see if there was any air getting trapped in a malformed pipe, but it
looks like it should in most diagrams. I've also tried opening the
cold water source valve fully, but it is already fully opened.

I'm hoping to install a power shower, so I need to get rid of the air.

Any ideas?

Cheers!
Colin.