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Christian Hoerning

Hi Alex,

NZS 4246 can be viewed online free of charge on EECA’s website http://www.eeca.govt.nz (search “4246”). EECA’s guide for retrofitting wall insulation says this in footnote 2.

Re Hot water cylinder standards, I think you may not need to read these standards to perform your work. I understand that the Home Performance Advisor Certification manual includes a table that shows the different cylinder grades depending on cylinder age.

Hope this helps,
Christian Hoerning from EECA