my boiler makes a vibrating noise when turned on. The noise then goes of after about ten mins,then comes back on when using the water. I have checked the pressure on the gauge and it looks normal,but every 4weeks i have to bring the pressure up to normal again. Can you help?

nicky, July 2007

It sounds like your getting air into the system. Check to make sure you do not have any leaks in the system.

Paul, July 2007