When your furnace is down and a technician can’t arrive for hours, these temporary heating tips can keep your home safe and bearable—especially during a cold snap.
1. Use Space Heaters Safely. Electric space heaters are the most effective temporary heat source. Use models with tip‑over protection and automatic shutoff. Keep them at least 3 feet from flammable materials. Never use an oven or stovetop to heat your home—this is a fire and carbon monoxide hazard.
2. Seal Drafts. Close doors to unused rooms. Use towels or blankets to block gaps under doors and windows. Cover windows with heavy curtains or plastic sheeting to reduce heat loss.
3. Layer Clothing and Bedding. Dress in warm layers, use multiple blankets, and wear hats and socks indoors. Body heat retention is the simplest survival strategy.
4. Use Sunlight. Open south‑facing curtains during the day to let in solar heat. Close them at night to retain warmth.
5. Prevent Frozen Pipes. If the home will be cold for an extended period, let faucets drip slightly and open cabinet doors under sinks to allow warm air circulation.
These are temporary measures, not a replacement for professional repair. To determine if your situation is urgent, see emergency vs. wait. For the underlying causes of the failure, see common furnace breakdown causes. For the full action plan, see what to do when your furnace stops working. And to prevent future failures, follow our prevention guide.