Range from the cheapest fitting of a boiler magnetic filter £60 (G & O Heating based in CM18) to the dearest fitting of a boiler magnetic filter £150 (Tony John Bradshaw based in CM16).
Comparing heating engineers estimates for fitting a magnetic filter 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 connect a magnetic filter in CM19 by posting a job with HaMuch and we will send it to heating engineers in CM19.