In todays news is an article about fake Chinese Hebel. I wonder of Nick Smith will hold the installers responsible. Using his own statement that plumbers are responsible for deciding that the products they install meet NZ standards, then surely the LBP that installed the HEbel will be responsible for the repairs..  Anyone want to place bets that different rules apply?

Job was done by Aquaheat Hasties Joint Venture.  JV is now dissolved.  Don't think there is any question of a problem with the installation - the copper involved was Crane Copper and some has already been replaced with Kembler copper (small amounts).   There is a lot more to this than meets the eye, the question of a lack of filters, water quality etc - it doesn't appear to be anywhere near as simplistic as simply poor quality copper.   One thing's for sure - it is going to cost the taxpayer of NZ a shit load to rectify.