To power flush or not to...

[easyt]

Excuse my ignorance. What is a 'F and E' tank ??

Ahh OK. Feed and Expansion tank. Sorry.

 

[dublin plumber]

hi what chemicals do you use , for cleaning as some are hard and others when you open the bottle look harmless , i once knew a guy who got a complaint from a customer that the chemical he used wrecked the boiler he duly opened a bottle of the same stuff inhibitor and drank a drop out of it , mind you i dont think i would try the Fernox 40 !!