Thanks to all for your time and advice. Much appreciated. As always, I've learned more new things. And given what's been said in previous posts about the current boiler, I might make sure I'm out of the house when it's removed.
All the best
Need some advice.
Have a Potty Netaheat 10/16 in our new place which has apparently not been serviced in years. Currently heats rads. as well as water when "hot water only" requested. (Valve problem?) Anyway; not that I'm looking to replace the valve as have been reading other posts re. it...