BU524 Solar water heating (2010)

Solar water heating systems can be used in a variety of applications in the residential, commercial and industrial sectors and can significantly reduce water heating bills in many households throughout the country.

This bulletin replaces Bulletin 477 of the same name.

This bulletin covers:

• available resource
• solar water heating systems, including solar collectors, hot water cylinders, supplementary heating, wetback connection, gas water heating, controllers, Legionella control and connections
• assessment
• energy performance information
• New Zealand Building Code requirements
• commission and operation.