by plumbbob »
Sat Dec 13, 2008 1:26 pm
Kw equals kilowatt hours. Basically, the bigger the KW, the larger the element and consequently the more water can be heated at once so the better the shower.
Showers range from about 7.0 kw up to 10.5 kw with 8.5 being the most common.
A 10 kw shower would use 10 units of electricity in one hour, or 5 units in half an hour etc.