Range from the cheapest powerflush £80 (Ferdinant Malasi based in WD3) to the dearest powerflush £800 (1970 based in SL9).
Comparing heating engineers estimates for powerflushing a central heating system gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.
What to do - Get rates and quotes to powerflush in HP5 by posting a job with HaMuch and we will send it to heating engineers in HP5.