WARNING. Any kind of light is a fire hazard. To be safe use the special heaters made especially for pigs instead. These are available on line from ENasco and from Jeffers Pet. (See link of the Essentials" page. ). Pig heater, installed on wall so it doesn't get overheated under hay, is shown at right.
Fill the house with straw or hay and keep it 16 inches deep. They will bury themselves under it and be nice and warm. Bedding won't last long as it becomes pulverized and flat so keep a check on it. Add a blanket to the bedding for extra protection. If you live in a severe climate where sub zero is common, it is best to plan an indoor sleeping area. If you live in a farm setting and have a barn, build a house inside the barn and throw hay over it as well as in it. Or give them access, in the dry, to a roll or big pile of hay and they will burrow into it. With multiple pigs no heat is usually required in a good barn with plenty of hay. visit: http://www.9sites.com/