G
Ginger plumbing
Hi been to a job with a biasi 90e24 and diagnosed the boiler to have a blocked dhw heat exchanger as when they draw hot water off it gets only hot when water is drawn off slowly and goes cold when opened more. Central heating is fine. Only thing is I've never changed one before as new to boiler repairs and it seems to be a mission to get too. So any one who has any advice would be much appreciated also how much would a new one cost???? Many thanks