Range from the cheapest replacement of a header tank £46 (Yonas Eyeas based in CR4) to the dearest replacement of a header tank £401 (Archer Gas and Heating Services Limited based in SM6).
Comparing plumbers estimates for replacing an expansion header water tank for your central heating 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 replace a header tank in SM5 by posting a job with HaMuch and we will send it to plumbers in SM5.