Shower temperature knob sticking

My shower's temperature knob doesn't work very well, making it hard to turn and adjust the hot water. What's the likely cause?

Asked by Harry on 14th Dec 2022
Expert Trade Answers
"Hi Harry, sounds like your shower control unit is knackered and needs to be changed out. Just old age."
Answered on 14th Dec 2022 - Member since Apr 2019 - report
"Will need cleaned or replaced due to build up in side stat"
Answered on 14th Dec 2022 - Member since Oct 2022 - report
"Most likely due to limescale seizing the valve up, this would need to be repaired or replaced"
Answered on 18th Dec 2022 - Member since Jul 2021 - report
"The grease has dried up probably due to age and heat."
Answered on 19th Dec 2022 - Member since Nov 2019 - report
"Hi Harry I agree with cfs contracts that it will need to be stripped and cleaned or possibly replaced"
Answered on 14th Dec 2022 - Member since Sep 2022 - report
"The shower cartridge has worn out and needs replacing"
Answered on 8th Jan 2023 - Member since Oct 2018 - report
"The likely cause is build up of limescale , sometimes you can clear it sometimes the shiwer needs replacing , it can be a time consuming job and cheaper to just replace it -"
Answered on 15th Dec 2022 - Member since Oct 2022 - report
"It needs dismantled, cleaned and lubricated. A fairly straightforward job for a decent DIY person"
Answered on 20th Dec 2022 - Member since Sep 2022 - report
"Possibly strip down and clean failing that mate it would need replacing"
Answered on 14th Dec 2022 - Member since Sep 2020 - report
"If the handle is stiff to rotate without the cartridge, then it is possible there may be some build-up within the handle preventing it from rotating smoothly"
Answered on 4th Jun 2023 - Member since May 2023 - report
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