Range from the cheapest installation of a thermostatic mixer shower £100 (PHE Services based in SL1) to the dearest installation of a thermostatic mixer shower £400 (Alex pluming based in hp13).
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 SL8 by posting a job with HaMuch and we will send it to plumbers in SL8.