Range from the cheapest powerflush £360 (Leslie Kellner based in HA7) to the dearest powerflush £800 (Teodor Ostafi based in HA5).
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 WD23 by posting a job with HaMuch and we will send it to heating engineers in WD23.