I had a shower like that before, it didn’t flip between hot and cold but it needed to be adjusted perfectly with the hot tap full on and tiny movements of the cold tap to get it right.
You can get thermostatic bath tap mixers with shower fittings - I dont know which brand / model is any good, but those are examples. Then the temp is set at the tap. Feels like fixing the symptoms not the cause though.
Well that’s good. Do you believe / trust him?
I had a shower like that before, it didn’t flip between hot and cold but it needed to be adjusted perfectly with the hot tap full on and tiny movements of the cold tap to get it right.
You can get thermostatic bath tap mixers with shower fittings - I dont know which brand / model is any good, but those are examples. Then the temp is set at the tap. Feels like fixing the symptoms not the cause though.