David Hansen wrote:
On Wed, 05 Jul 2006 01:36:12 +0100 someone who may be Biggles
wrote this:-

Depends on your priorities. You don't need more than that to get a
shower you can get clean under, although you do if you want it to be
"invigorating". The greater the pressure, the more water and energy you
will use.

One will buy energy if one adds a pump. However, one will not buy
energy if using a venturi shower.

Interesting but not relevant to the point I was making. My comments were
based on the minimum head required for a gravity shower, not mains or
pumped. More head means (potentially) more flow = more energy used for a
given temperature.

Venturi showers consume more energy in exactly the same way - more flow
= more energy consumed. However, anything which avoids the use of a
pump is a good idea in my opinion, as it's one less thing to go wrong,
and you will save a bit of energy into the bargain.

Biggles