Thermostatic shower

[diycooper]

Hi

I have a thermostatic shower. It is 3 years old not used much. It has a dial what goes to 50 degrees. I used to have it on around 35 and any hotter would be to hot. Now I have it on the full 50 degrees and it is not as hot as it used to be on 35 degrees. My hot taps on sinks and baths are roasting so its not a fault with boiler. Am I right in saying it would need replacing ?

 

[Madrab]

If you know the make then a new thermo valve would sort it. £ for £ though you can replace them pretty cheaply these days if it's a standard pipe centre fit