Range from the cheapest powerflush £340 (Grant Cross based in SE25) to the dearest powerflush £600 (Mahdi Soroush based in SE20).
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 BR3 by posting a job with HaMuch and we will send it to heating engineers in BR3.