Like pit said just create a smaller enclosed area and keep that heated. I have seen rooms in basements set up with shipping blankets backed with plastic hanging from the ceiling to create a sectioned off area. You wont believe the amount of heat this will retain. Also a fully enclosed rack will help greatly. I typically keep my home at 70 degrees year round. With my fully enclosed rack I am able to get ambient to about 80 degress +\- 2degrees. Good luck!!