Range from the cheapest installation of a thermostatic mixer shower £250 (Plumbforce Direct Ltd based in W1U) to the dearest installation of a thermostatic mixer shower £425 (LUCO - London Utility Company based in W1W).
Comparing plumbers estimates for replacing a thermostatic mixer shower 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 install a thermostatic mixer shower in John by posting a job with HaMuch and we will send it to plumbers in John.