The pressure output of an electric show is proportional to the wattage
of the heating element. True or false?

My daughter has a 8.5kw shower, and it is like standing under a faulty
watering can. My shower runs direct off the combi boiler, and as our
pressure is good so is the shower.

What is the highest wattage electric shower available, and how powerful
are they? I've tried a google search but many suppliers don't state the
wattage. I can find no supplier either in Stoke on Trent or Manchester
who actually demonstrate showers, a bit like buying a pig in the poke
methinks.

Any help or ideas most welcome
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