Saving Gas

Saving Gas

If your hot water is heated by gas, it is usually either Reticulated (town supply) or LP (Bottled) Gas. You would likely have either an instantaneous heater or a hot water storage system.

The storage type of heater is sometimes located above the ceiling of the house. Some of these rely on gravity to feed the hot water to the shower. We do not recommend fitting Showertimer in this case unless the cold water is also gravity fed.

Gas saving potential varies according to the cost of supply and, to a lesser extent, which type of heater.

Gas saving is related to the amount of water to be heated and to the cold water temperature. Saving gas with Shower Timer is achieved by using less water.

The following shows the approximate cost of a 12 minute gas heated shower:

COST OF SHOWER	Each shower	5 Showers per day	Annual Cost
Reticulated Gas	$0.55	$2.75	$1004
LPG	$0.95	$4.75	$1734

These costings are based on a cold water temperature of 15 degrees C and a shower flow rate of 12 litres per minute at a comfortable temperature. Tariffs used are 1.6 cents per MegaJoule (Reticulated Gas), $1.60 per Kg or 80c per Litre (LPG) and 90 cents per KiloLitre (Water supply).

By fitting our Shower Timer set to 6 minutes, your annual gas saving will be half the annual cost. The cost of a Shower Timer will be recovered in a matter of months.

To determine your supply cost (Cents per MegaJoule), consult your gas account or call the gas supply authority. If you have bottled gas (LPG), the cost per Kg or per Litre can easily be converted to Cents per MegaJoule. See our shower savings calculator which you can download to easily calculate your potential gas saving.

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