These instantaneous water heaters are the most efficient way to provide hot water at the point of use. The water is not pre-heated, but is heated instantaneously at the wash basin or sink as it flows through the unit. This is a resolute approach to eliminate standing heat losses.
In comparison with conventional storage water heaters no power is consumed while in stand-by. Additional water savings are also achieved because the flow rate is set at an economical level. A small instantaneous water heater can save up to 85 % energy in comparison to a small storage water heater.
1.First, you need your supplies. For this you will need resistance wire, a knitting needle, a tin can like a soup can), a piece of clay stem pipe for both ends, some wire and a 6v battery.
2.Now to make the heater. First, get a can. I used a soup can but you can use any tin can.
3.Get the resistance wire and wrap it round the knitting needle.
4.Cut the soup can and insert the resistance wire and poke holes in the side of the can with the knitting needle.
5.Now use the clay stem pipe to insulate both ends where the resistance wire sticks out.
6.Attach wires to the end of the resistance wire element and attach the 6 volt battery to operate it.