There are multiple devices that can provide heating in a dog house. Pet owners can use a heated kennel mat, a heating pad, a heater box or a PETCool heater/AC unit.
Before choosing a heating device for a pet, owners should know that a properly constructed dog house usually keeps a dog warm on its own. The ideal cold weather dog house should have the following features: an insulated, above-ground floor; enough space for the dog to turn around and stretch out comfortably; insulated floor, walls and roof; some type of covered door entrance; and an interior wind break to protect the dog from heavy rain and strong winds.
When considering using a heated kennel mat, pet owners should be aware that there is usually a cord attached to it, so it may not be the best option for the dog if he likes to chew. A dog house heater box is a metal box that has a light bulb or a ceramic emitter inside, and it mounts in an upper corner of the dog house. The PETCool heater/AC unit is a much pricier option, costing approximately $400 to $500 as of March 2015, and it also requires pet owners to take extra precautions concerning the power cord.