Will my home get a warranty?

It should, yes. That’s because most manufacturers belong to NASH and use AXXIS® steel for framing, which is produced by New Zealand Steel. New Zealand Steel provides a 50-year durability statement to meet the requirements of the NZ BC B2 Durability. 

All components are precision manufactured computer-controlled roll formers and assembled to very tight tolerances. Because of the high thermal conductivity of steel and the thermal breaks it stays dry under all but exceptional weather circumstances. If water gets into the wall cavity it is not absorbed by the framing and so can readily evaporate.