[thommo62]

I live in central nsw,and have just replaced a natural gas external heating unit with a new more efficient model it will sit under the house where the old one was{for approx 13yrs},My question is the unit will sit approx half meter [500mm] from the gas meter,can I legally use a flex. Hose [rated for external use and professionally made ie;crimped with correct fittings] to supply gas to the unit,this is the only gas appliance in the house.

[wmproop]

You need to check with maybe the gas company or someone over management of local utilitys about local codes