You may already have an outdoor cat house for nice weather, one that is insulated against wind and elevated above the ground or cement. As long as the cat house is dry and not drafty, it will be adequate shelter. But adding a heating element will go the extra distance to keep your cat comfortable in cold weather. Low-level radiant heat is the safest solution.
Things You'll Need
- Cat house (wooden or plastic)
- Thermal mat or electric heating pad UL rated for outdoor use
- Outdoor electrical outlet
- Outdoor-use extension cord
Instructions
Begin with a cat house you already have or construct a wooden box. Experts recommend cedar as it repels fleas and weathers well. You'll be creating a downsized doghouse, in essence, with two small doors. Often, cat houses will have a flat roof for the cat to lounge on. For multiple cats, you'll need a larger cat house. Some cat houses are multi-story. You can insulate the inside walls with carpet scraps or styrene foam; do not use fiberglass.
If you will be using an electric heating pad, verify an electrical outlet is within 6 feet of the cat house or ensure the connection to an outdoor-safe extension cord is protected from moisture. You may wish to connect a ground fault circuit interrupter (GFCI).
Purchase an outdoor-use electric heating pad made for outdoor cats or a non-electric thermal mat. You can find both online (see resources).
Install the pad or mat inside the cat house.
Plug in the heating pad.