I had a spare house. Houses here are relatively cheap here LOL. Buy an extra one and it will fill up with sewing machines. At any rate I put the machines in the attached garage and yes we keep a steady heat in winter. In summer the room is very well insulated (used to be a dog groomers.) There is also a detached garage for DH. Slowly we have filled the stupid house and moved the shop into the old kitchen... Then we bought the house next door even cheaper.... I'm always trying to eliminate one or two or more machine... It is easier to get machines than to get rid of them. They certainly do not sell for thousands of dollars each. And cheap houses are a money pit.