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Incoming Hot Water Legislation... Where do you stand?

Did you know that water heating is the largest single source of greenhouse gas emissions from the average Australian home and accounts for about a quarter of household energy use?

Currently about 50 per cent of Australian households use conventional electric hot water systems to heat water in their homes. These systems are three times less efficient than other technologies available and produce a great deal more greenhouse gas emissions. Other more efficient technologies include solar, heat pump and high efficiency gas.

Significant greenhouse savings can be made by switching from conventional electric water heating to low-emission alternatives. Householders may also save money on their electricity bills each year by switching to a low-emission water heater.

Conventional residential electric hot water systems produce about four tonnes of carbon dioxide per year — up to three times that of more efficient technologies. By phasing out greenhouse-intensive water heaters, greenhouse gas emissions can be reduced by about 50 million tonnes in the period from 2010 to 2020.

You will not have to purchase a low-emission hot water system until your current one needs to be replaced.

Switching to low-emission technologies

A range of low-emission technologies are available for water heating in your home. When properly installed and used efficiently, low-emission hot water systems provide householders with an opportunity to reduce their greenhouse gas emissions and reduce their energy bills. Builders of new houses and households replacing an existing hot water system can choose from a range of low-emission alternatives to suit their home, climate and budget, including:

• Heat pump

• Gas

• Solar (electric or gas boosted).

If you have access to piped/reticulated natural gas, you aren’t limited to installing a gas hot water system; choose the option that best suits your needs.

Implementing the phase-out

The phase-out will be implemented in two parts : new dwellings and existing dwellings, and each according to their class.(1A, B, 2.)



All new dwellings, class 1A+B,

All existing class 1A+B dwellings in a gas reticulated area,


All existing class 1a+b dwellings,


All new dwellings, class 2, with access to reticulated gas,


All new dwellings, class 2, without access to piped gas


All dwellings 

Class 1A- single dwelling being a detached house, or one or more attached dwellings, each being a building, separated by a fire-resisting wall, including a row house, terrace house, town house or villa unit.Class 2- A building containing 2 or more sole-occupancy units each being a separate dwelling.
Class 1B-  boarding house, guest house, hostel or the like with a total area of all floors not exceeding 300m2, and where not more than 12 reside, and is not located above or below another dwelling or another Class of building other than a private garage.

Our qualified plumbers can assess your situation and find the solution that is right for you.

Please call 9986-1234 and we will discuss your options with you.

Ask a plumber!

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Ask a plumber!

Fill in your details below and we'll get back to you within the hour!
OR give us a call, we'll be happy to help.

phone1300 372 467

1000 characters left