whistling boiler

[dam]

any ideas on this. I thought it may need a replacement heat exchanger !

 

[Deleted member 2053]

Boiler can whistle when overgassed. It will be cheaper for you to get a registered installer to check it than needlessly buy a new heat exchanger.

 

[yammas]

Which boiler model do you have?
To replace a heat exchanger could be a costly venture

Options (cheapset first) To add a noise silencer like a Fernox F2 to reduce noise.
Another option would be a powerflush of the central heating system, using a powerflush unit and chemicals like Fernox DS-40 and system neutraliser.... then fit a magnaclean filter (Professional or TwinTEch)

 

[dam]

its an old 1996 ideal elan 8kw. overgassed never thought of that, also the flow only rising to 70c which is why I thought maybe HE.

 

[yammas]

you will have to check burner op and gas rate to check for over gassing