@45yearsagasman I've never been recommended a scale reducer. Can I buy those separately?
And the thing they're cleaning is a long tin box thing. I'd personally like to simply fit a new one. How would I find a plumber who'll do that? Anything I should look for?
@joe-90 I unscrewed the...
I've a Potterton Promax Combi HE Plus. This was fitted around six years ago by British Gas (and I have British Gas cover).
I live in North London, and have hard water.
The boiler is always reliable at producing hot water; and always reliable at producing central heating - and, with a small...