Australian New Zealand Standard AS/NZ 4234:2008 Solar Water Heaters - Heated Water Systems - Calculation of Energy Consumption - Victoria


You will be required to comply with this standard if you are a plumber and supply or install solar water heaters in Class 1 residential buildings such as sole occupancy homes and guest houses.

This standard sets out a method of evaluating the annual energy performance of water heaters using a combination of test results for component performance and a mathematical model to determine the standardized annual purchased energy use. The procedure is applicable to electric, gas and solar water heaters with integral boosting or preheating into a conventional storage or instantaneous water heater and to heat pump water heaters. For solar and heat pump water heaters, displaced purchased energy relative to reference water heaters is also calculated.

Service type

Code of Practice

A code of practice is a set of rules which details how people in a certain industry should behave. A code of practice can be defined as a result of legislation or by industry regulators and bodies.

Act(s) name

Building Act 1993 Victoria

Regulation(s) name

Plumbing Regulations 2018 Victoria

Administering agency

Victorian Building Authority

Contact details

Contact Email, Phone and Address Details for this service in simple two column table format, header then data.

Please use these contact details for help or more information:


Victorian Building Authority

Operating address: Goods Shed North
733 Bourke Street
Docklands, Victoria 3008
Mailing address: PO BOX 536
Melbourne, Victoria 3001
Phone: 1300 815 127
Fax: 03 9618 9062
Website: Victorian Building Authority (Opens in new window)