I don't think the article means to suggest that you let your house go completely to the elements - only that you maintain a lower more economical temperature. H

I don't think the article means to suggest that you let your house go completely to the elements - only that you maintain a lower more economical temperature. How is mold going to grow more at 55F than it would at 70F? As long as you ventilate moisture and minimize condensation you can keep the mold under control.