the noise happens when the hot and cold taps are turned on. The howling noise appears to come out of the kitchen tap and the bathroom tap when we want to use water, almost like there is an airlock spluttering the water out of the taps.
if the dishwasher/washing machine is filling up with water...
please help we have the most terrible howling noise when we put on our taps,flush the loo, use the dishwasher or washing machine. we have a combi boiler.