Probably a daft question on plumbing, but...
I've just replaced many of the radiators in our house in the UK with relatively new (40 years newer than the old ones) radiators that I bought off ebay for next to nothing. I understand that I can't do much plumbing in NZ. While I understand this makes sense for the drinking water, I was wondering if I would be allowed to add radiators to a central heating system, or whether I would have to get a professional in to do the work. Having said that I don't really know if this makes economic sense anyway. Are plumbers expensive in NZ? There like hens teeth round here!
Regards
Ed Ellie Katie & Jeremy