Also one hydronic guy told me it costs the same as central heating to run is this true?
Wow he obviously hates the product he uses. I've never heard that.
I've found where we are now that in winter our electricity and gas is both high for ducted heating.
Hydronic only uses electricity for the circulation pump and the gas burner is way more efficient than any ducted system so not sure what he's talking about.
What boiler unit are you looking at?