Guides · How-to
Heated vs. Unheated Outdoor Cat Shelters: Which One Do Your Cats Need?
An insulated shelter lets a cat hold on to its own body heat. A heated shelter adds a low-wattage pad so the floor stays warm even when the cat can't produce much heat itself. Both work. Which one makes sense depends on how cold it gets, which cats will use it and whether you have safe power nearby.
How an unheated shelter keeps a cat warm
An unheated shelter works like a sleeping bag: insulation and a small interior trap the heat the cat gives off. It works well when:
- the shelter is small enough for the cat to warm,
- it's insulated on all sides, including the floor,
- it's filled with dry straw the cat can burrow into, and
- two or more cats share it and warm each other.
Unheated shelters need no electricity, can go anywhere, and cost little to build. The weak spot is a cat that's small, old, sick or thin. It may not generate enough heat to warm the space, and on the coldest nights it loses heat faster than it makes it.
What a heated pad adds
A heated shelter has a pad, usually 20 to 40 watts, that keeps the floor at a steady, gentle temperature. That helps in three situations:
- Cats that struggle to stay warm: kittens, seniors, thin cats and cats recovering from illness or surgery.
- Long stretches below freezing, when even a well-insulated shelter cools down between visits.
- Single cats, which don't get the extra warmth of a shared shelter.
A heated floor also dries out a little dampness the cat brings in, which straw alone can't do.
A simple way to decide
| Your situation | What we'd use |
|---|---|
| Mild winters, rarely below freezing | Insulated, unheated shelter with straw |
| Regular freezing nights, healthy adult cats that share | Either; a heated pad adds margin on the coldest nights |
| Long freezes, snow, or wind chill well below 20°F | Heated shelter |
| Kittens, seniors, thin or recovering cats | Heated shelter |
| No safe outdoor GFCI outlet within reach | Unheated shelter, or have an outlet installed first |
| Shelter in an open, exposed yard | Hard-shell shelter, heated or not, raised off the ground |
Running costs are small
A 20W pad running all month uses at most about 14.4 kWh, and a 35W pad about 25 kWh, a few dollars a month at typical U.S. rates. We break down the math in how much electricity a heated cat house uses.
If you go heated, check these four things
- A regulated pad: thermostatic or constant-temperature, not a plain heating element that keeps getting hotter.
- A protected cord: chew-resistant sleeving and a cord long enough to reach your outlet, or an outdoor-rated extension cord.
- A safety listing, if it matters to you: some pads, or whole shelters, carry MET, ETL or UL listings. Others don't publish one. Our safety checklist explains what to look for.
- A dry floor: heat plus a wet floor makes condensation. A raised floor and a covered spot prevent it.
If you go unheated, do these well
- Keep it small and insulate every side, including the floor and roof.
- Use straw, never blankets or towels.
- Raise it off the ground and face the door away from the wind.
- Add a second exit and a flap over the doors.
Bottom line
If you have safe power and your winters bring regular hard freezes, or if you care for kittens, seniors or a single cat, a heated shelter is worth it. Otherwise a well-built insulated shelter with straw does the job.
Floor raised about 5–6 in, room for 1–3 cats, two doors and three windows, and a 32–35W pad that holds about 100°F with its cover on. Sold by Depoodeal with free U.S. shipping and 30-day returns.
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