ideal elan 2 boiler banging

[fartymarty]

why does my boiler bang alot when heating up the water, especially when its coming up to temp

[fanman]

This is called kettling and your boiler is choked up with gunge and scale. A cheap "possible" fix maybe a 'boiler noise silencer' from a plumbers merchants which is an additive to the heating system when drained down, added, then refiled and allowed to circulate. But best best is a 'power flush' by a reputable local plumber who has the proper machine and chemicals. An inhibitor chemical is added after treatment to prevent any build up in the future.