Range from the cheapest powerflush £300 (Michael Harrison based in WS15) to the dearest powerflush £700 (Steve Hollis Electrical based in WS6).
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 ST18 by posting a job with HaMuch and we will send it to heating engineers in ST18.