Range from the cheapest fitting of a boiler magnetic filter £28 (Brian Moffat based in KA17) to the dearest fitting of a boiler magnetic filter £100 (Central Heating Services based in G77).
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 KA20 by posting a job with HaMuch and we will send it to heating engineers in KA20.