Hi

We've got an electric shower. It's made by Aqualisa, and (I'm not sure of the
correct term here) it just pumps the water - it doesn't do any heating. There's
a temperature control knob on the front as well as one for adjusting the flow.

It's about 3 years old and has always been fine, however over the last few
months we've noticed it's not quite as hot as it used to be. Even on the maximum
temerature setting, it's not as hot as the water coming out of the taps. I've
confirmed this using a thermometer.

Any suggestions? I'm aware that electric showers have temperature limiters in
them, but that wouldn't explain why it used to be OK, but isn't now.

We've had some plumbing done elsewhere in the house, so the mains stopcock's
been off and on a few times. The only thing I can think of is that the cold
water pressure coming into the shower is too high, and there's not enough hot
water for it to "keep up" - could this be the reason?

Thanks in advance

Glenn.