It’s nuts. If I was qualified I’d do it myself. I just think we need to try this before looking at expensive leak detectives and new boilers. Are you saying a chemical flush rather than a powerflush?
so I think after a lot of research and magnets that there is a blockage in airing cupboard pipe (copper). Is that generally an easy enough job for an experienced engineer?
Symptoms: Central heating system conventional, two rads one upstairs one down filling with air weekly, pumping over a bit and more in summer, magnet sticking to some pipes in airing cupboard.
Action required according to advice here: powerflush, cut out and replace affected pipes if necessary...
Had mine for a while now and like to fact you can see how much you are using, check they are receiving a reading etc. It did go off once but was easy to reset. Don’t know what happens when it’s life span is up though.
So re my previous posts about a lot of air getting into two radiators (conventional boiler) Magnet sticking to part of thin pipe in airing cupboard and no inhibitor ever been added I finally got a company to come out. They didn’t think this would be causing the air as there was way too much air...