Even when the water in my tank is red hot, my power shower has been running lukewarm even when turned up to the max. My cold water is absolutely freezing so I rectifed the problem by just turning down the stopcock on the cold feed to the pump until the max temperature was more to my liking.
Is this OK, or could I bugger up the pump this way ?
Is this OK, or could I bugger up the pump this way ?