Central Heating Question

[anonymous-user]

Hi all, posting on here as my system still works, so i don't know if it's a problem as such, but...

I have a 3yr old pressurised style heating system with 'non-combi' gloworm boiler and one of those big Megaflo tanks for hot water - when the heating or hot water 'clicks' on and off there's a loud bang from the cupboard containing the megaflo tank and the overflow pressure header tank thing (sorry for lack of technical terms). It's never been silent but I'm sure the bang is louder than it's ever been, can anyone offer an explanation and/or solution, or is this normal and acceptable for this type of system?

[Hereward]

Is water being discharged outside?

Have you regenerated the air bubble (instructions on the side of the tank)?

I think you should get a heating engineer round for peace of mind, my Megaflo is silent.