I am thinking of having a modular summer home built that will not be used during the winter. As a result I will drain the plumbing to prevent freezing and bursting pipes. Where can I get advice about the pitfalls of closing a house. Should I keep the heating system on all winter? That would be expensive in the N.E. What are the consequencious of closing a house? Is mold a problem? I would appreciate some advice and information. Thank you.