On Jun 21, 7:23 pm, "R.P.McMurphy"
wrote:
How would i go about calculating how much it would cost to heat an average
showers' worth of water using a typical calor gas sized bottle. I will be
using a 15kw gas water heater and a 3 bar pump.

cheers

Steve

Stand gas bottle on bathroom scales. Record weight. Have average
shower (or 6) record weight.
Calculate weight of gas used per shower, weight of gas in bottle,
showers per bottle, cost per shower, etc..