To add Sq Ft, would a sunroom heating unit need to be wired and fixed instead of a portable plug-in?I'm considering adding heat to my sunroom so it will count as living space. But I would like to know if the heating unit has to be wired (rather than a plug-in) and fixed to the wall (rather than a portable unit). What are the official requirements?April 02 2009 - Newton00YesReport a ProblemProblemSelect oneOffensive contentIrrelevant contentSpam (pure self-promotion)OtherDetailsYour emailPlease enter a valid email address.Submit CancelContent flaggedWe will review this content. Thanks for helping make the site more useful to everyone. To learn more, read Zillow's Good Neighbor Policy.We're sorry. This service is temporarily unavailable. Please come back later and try again.