This Standard specifies the basic requirements related to safety and public health for water
heaters and hot-water storage tanks that are intended for connection to a potable water
supply, such as—
(a) storage water heaters;
(b) heat-exchange water heaters;
(c) hot-water storage tanks with an external energy source;
(d) instantaneous water heaters; and
(e) boiling-water dispensers.
This Standard applies to water heaters using any type of heating, irrespective of the source
of the heat energy imparted to the water, including electric resistance, gas, liquid or solid
fuels, heat pumps, waste-heat recovery systems, solar energy or any other means of heating
potable water.
In addition to the requirements of this Standard, additional requirements may be applicable
for early childhood centres, primary and secondary schools and nursing homes or similar
facilities for young, aged, sick or disabled persons, as set out in AS/NZS 3500.
This Standard does not include requirements affecting the durability of water heaters,
except those applying to safety devices. It does not apply to steam generators, sterilizers,
washing machines, wash boilers, urns, kettles, or hot-water supply systems intended solely
for space heating, swimming pools, spa pools or industrial processes.
NOTE: The installation of water heaters and hot-water supply systems is covered by
AS/NZS 3500.4 and AS/NZS 3500.5.
AS 1357.1 Valves primarily for use in heated water systems, Part 1: Protection valves*, 2019-12-20 Update
AS 3688 Water supply and gas systems — Metallic fittings and end connectors*, 2016-06-27 Update
AS 4552 Gas fired water heaters for hot water supply and/or central heating
AS/NZS 2712 Solar and heat pump water heaters - Design and construction
AS/NZS 3350.2.21 Safety of household and similar electrical appliances - Particular requirements - Storage water heaters
AS/NZS 3500.0 Plumbing and drainage, Part 0: Glossary of terms*, 2021-02-26 Update
AS/NZS 3500.4 Plumbing and drainage, Part 4: Heated water services
AS/NZS 4020 Testing of products for use in contact with drinking water
AS/NZS 60335.2.21 Household and similar electrical appliances – Safety – Part 2.21: Particular requirements for storage water heaters*, 2023-01-12 Update
AS 3498:2009 history
2020AS 3498:2020 Safety and public health requirements for plumbing products — Water heaters and hot-water storage tanks
2009AS 3498:2009 Authorization requirements for plumbing products - Water heaters and hot-water storage tanks
1970AS 3498:2003/Amdt 1:2005 Authorization Requirements for Plumbing Products Water Heaters and Hot Water Storage Tanks
2005AS 3498/AMD 1:2005 Amendment No.1(2005) to AS 3498-2003 Authorization requirements for plumbing products - Water heaters and hot-water storage tanks
2003AS 3498:2003 Authorization requirements for plumbing products - Water heaters and hot-water storage tanks
1995AS 3498:1995 Authorization requirements for plumbing products - Water heaters and hot-water storage tanks