Great tips!

We already know that if you are going to have this kind of project you must at least learn how to make the process. However, this kind of project will really helps a lot specifically on what are the uses of this matter. Also this energy saving tips help on how to save electric power.

That's great! It's been working here fantastic, I had to turn down the temp setting all the way! Saving lots of power!

In a survival situation you could also insulate the sides.

You could use a lot of different insulating materials in a pinch, like bubble wrap or cardboard to get by. Have some big cardboard boxes saved up in the garage ready to go.

And don't forget to limit the door openings as much as possible.