Christo

If you only have one source of heat in your house, i.e.

New Zealand has got so many streams, which may be used to generate power. Remember the old water wheel used to mill grain or maize?

Build your own wind turbine, store the energy in a battery pack and use it to power your lights.

Do not park the refrigerator next to your stove, a heater or an uninsulated wall, as this would reduce its efficiency.

Do not put hot food in the refrigerator, let it cool down to room temperature first. It will also prevent bacterial growth if you leave it out for about 20 minutes.

If you do not own a frost free model refrigerator, frost on the cooling panels will reduce the efficiency. Defrost it once the frost goes beyond 1 cm.

Do not set the control temperature of your refrigerator too low, as it just waste energy to maintain the setpoint.

A refrigerator operates at peak efficiency when filled. Once you open the door, there will be less cold air to move out of the fridge, but more cold goodies which will keep the cold inside.

Stop the dishwasher after the final rinse and before the drying cycle. The dishes can drip dry or you can wipe it with a dry cloth if needed in a hurry. This saves the energy for drying the dishes.

Connect the dishwasher to the COLD water supply as instructed by the supplier.