Estimating
running costs
Use the number in the energy consumption box as a guide to the typical running costs of a model. Multiply it by your gas tariff to estimate the approximate annual running costs, then multiply this by 12 to estimate the lifetime running costs.
Example:
For an energy consumption of 21,500 MJ per year and a natural gas tariff of 2.1 cents per MJ ($0.021/MJ), the lifetime running cost is:
21,500 x $0.021 x 12 = $5,418
The labels can also be used to estimate the lifetime greenhouse gas emissions. For each MJ of gas consumed, around 0.06 kg of carbon dioxide is emitted, so for the example above the greenhouse gas emissions are:
21,500 x 0.06 x 12 = 15,480 kg or 15.48 tonnes
The actual running costs and greenhouse gas emissions will depend on where you live, your gas type and tariff, cold water temperatures, the amount of hot water used, the quality of installation, the thermostat setting and user behaviour.
Call the Sustainable Energy Development Office Energy Smart Line on 1300 658 158 if you need help estimating running costs.
Typical 12-year running costs for water heaters
$0 | $2,000 | $4,000 | $6,000 |
| 5 star model |
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| 3 star model |
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Based on a usage of 200 litres of hot water per day, 2.1c/MJ tariff
top star rated
gas water heaters
If you would like details on models on the market, contact the appliance supplier or your local gas appliance retailer.
If you want more information on choosing a gas water heater to suit your needs, contact the Sustainable Energy Development Office Energy Smart Line on 1300 658 158.
If you want more information on gas Energy Rating labels, contact the Australian Gas Association’s Technical Office on:
Telephone (03) 9580 4500
For more information on Top Energy Saver Award Winner winning appliances log onto the Top Energy Saver Award Winner web site:
