Is It Safe to Heat My House With the Oven or Stove?
When a cold snap hits and the heat feels slow — or the furnace quits — it's tempting to crack the oven door for warmth. Here's why that's one of the most dangerous shortcuts in winter, and what to do instead to stay warm safely.
Every Oklahoma winter has that first hard cold snap that catches people off guard — the furnace is struggling to keep up, or it’s quit altogether, and the house won’t warm up fast enough. In that moment it feels reasonable to turn on the oven, crack the door, and borrow a little heat from the kitchen. It’s one of the most common things homeowners reach for, and it’s also one of the most dangerous.
The short answer: no, you should never use your oven or stovetop to heat your home. Here’s why, and what actually works when you need warmth in a hurry.
Why the oven is the wrong tool for heat
An oven is built to heat a small, enclosed box for an hour or two — not an open room for an entire night. Using it as a heater creates real hazards no matter what fuel it runs on.
A gas oven produces carbon monoxide. Burning natural gas always gives off some carbon monoxide, and your oven’s burner was never designed to run for hours with the door hanging open. In a closed-up winter house, CO can climb to dangerous levels before anyone notices — and because it’s invisible and odorless, the first warning is often a headache, dizziness, or nausea. In a modern, tightly sealed home, it builds even faster. Every year people are hospitalized after trying exactly this.
An electric oven is a fire and overload risk. It won’t produce carbon monoxide, but running it open for hours can overheat the unit, radiate heat onto nearby cabinets and countertops, and draw heavy current on its circuit the whole time. It’s simply not what the appliance was designed to do.
Either way, an open hot oven is a burn and fire hazard — especially dangerous with kids, pets, or anyone who might reach in or lean on the door.
We talked a Moore homeowner through this last winter after their furnace locked out on a 20-degree night. Their instinct was to open the oven “just until morning.” We walked them to safer options over the phone instead and got a technician out — the fix turned out to be a failed igniter, not a new furnace. The oven would have warmed one room a few degrees while quietly putting the whole household at risk.
Safer ways to stay warm when the heat is slow or out
You have better options that actually keep you comfortable without the danger:
- Use a UL-listed electric space heater plugged directly into a wall outlet — never a power strip or extension cord. Give it three feet of clearance from anything that can burn, and turn it off when you leave the room or go to sleep.
- Close off one room and gather everyone there. A smaller space with a closed door warms up and holds heat far better than trying to heat the whole house.
- Layer up and trap body heat with blankets, warm clothing, hats, and extra socks. Sharing a room with family and pets adds real warmth.
- Open south-facing curtains during the day to let in free solar heat, then close all your curtains at night to slow the loss.
- Keep your CO detectors working — fresh batteries every heating season. If an alarm sounds, get everyone outside into fresh air and call for help.
What you should never do is bring an outdoor heat source inside: charcoal or gas grills, camp stoves, patio heaters, and portable generators all produce large amounts of carbon monoxide and must stay outside and well away from doors and windows, even in the garage.
When it’s time to call a pro
If your heat is out, slow to recover, or short-cycling on and off, that’s not a problem to ride out with the oven — it’s a sign your heating system needs attention. Many no-heat calls turn out to be a quick fix: a tripped safety switch, a dirty flame sensor, a failed igniter, or a clogged filter choking airflow. The sooner it’s diagnosed, the sooner you have safe, steady heat again instead of a risky workaround. If you’re without heat on a cold night, emergency furnace repair is the right call — not the oven door.
The bottom line
Your oven and stovetop are for cooking, never for heating your home. A gas oven can fill a closed house with carbon monoxide, an electric one creates a fire and overload risk, and both put anyone nearby in danger of burns. When a cold snap hits and the heat can’t keep up, close off a room, layer up, use a properly placed electric space heater, keep your CO detectors fresh — and get the real problem fixed.
If your furnace is struggling or has quit entirely, Graco provides heating repair across Edmond, Oklahoma City, and the surrounding metro, with flat-rate pricing you approve up front before any work begins. Call (405) 500-5333 and get safe, dependable heat back in your home.
Frequently asked questions
- Can carbon monoxide really come from a gas oven?
- Yes. Any time a gas oven or range burns fuel, it produces some carbon monoxide, and a burner was never designed to run for hours with the door open. Left on to heat a room, it can build CO to dangerous levels in a closed-up house — faster in a tight, well-sealed home. Carbon monoxide has no color or smell, so you won't notice it until you feel sick. This is exactly why every home needs working CO detectors, especially during heating season.
- Is it any safer to heat with an electric oven instead of a gas one?
- It removes the carbon monoxide danger, but an electric oven isn't safe for this either. It's not built to run for hours with the door open, and doing so can overheat the appliance and its circuit, scorch nearby cabinets, and create a fire risk — plus it draws heavy current the whole time. An oven of any kind is for cooking, not space heating.
- My heat went out on a cold night — what should I do right now?
- Close off one room, layer up with blankets and warm clothing, and use only heat sources rated for indoor use, like a UL-listed electric space heater plugged straight into a wall outlet. Keep everyone and pets together to share warmth, make sure your CO detectors have good batteries, and call for heating repair. Never run a grill, camp stove, or generator indoors or in the garage to stay warm.