Range from the cheapest installation of a thermostatic mixer shower £100 (ProPlumb based in BS36) to the dearest installation of a thermostatic mixer shower £425 (Ongas based in GL5).
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 GL12 by posting a job with HaMuch and we will send it to plumbers in GL12.