by htg engineer »
Sat Dec 20, 2008 8:57 pm
Badly ? how bad.
You could drain and flush a few times (removing each rad) add system cleanser and run system for a couple of weeks, drain and flush a few times and then add inhibitor - costing around about £30 and your labour.
Or if really bad, get the system powerflushed - but this will cost a few hundred pound
htg