www.GymRatZ.co.uk wrote:

I just phoned Valliant and took out their D&G 6 month plan at £49.98 a
month which includes Heat Exchanger.

HFM? That's five times more per month than I've spent in the last 27
years on my cast iron lump.

It was on from 7am to 11pm yesterday and managed to burn 90kWh of gas,
so just under £3, would I like to change it to a condenser to save maybe
1/3 of that gas? No thanks.