There’s a particular kind of dread that comes with opening the first heating bill of winter. You did nothing different. You just lived in your house. And somehow it cost twice what September did.
The good news: heating is one of the few big household costs you actually have a lot of control over. Some fixes are free and take five minutes. Others cost twenty bucks at the hardware store and pay for themselves before New Year’s. A few are bigger projects worth knowing about. We’ve put them all in one place, ranked roughly from “do this tonight” to “plan it for next year,” so you can stay warm without wincing every time the furnace kicks on.
First, know where your heat is going
Heating and cooling make up the biggest slice of energy use in a typical American home, often around 40 percent or more depending on where you live. Most of the waste comes from three places:
- Air leaks around windows, doors, outlets and the attic
- Heating an empty or sleeping house to daytime temperatures
- A system that’s working harder than it should: dirty filters, blocked vents, old equipment
Fix those three and you’ve handled most of the problem.
Free fixes you can do tonight
1. Turn the thermostat back while you sleep and while you’re out
This is the big one. The U.S. Department of Energy says you can save up to 10 percent a year on heating and cooling by turning your thermostat back 7 to 10 degrees for 8 hours a day. That’s a typical workday or a night’s sleep. It’s a myth that your furnace burns more energy “catching up” afterward. A cooler house loses heat more slowly, so you come out ahead.
A comfortable starting point a lot of families use: 68°F when you’re home and awake, lower when you’re asleep or out. Grab an extra blanket and you’ll barely notice.
2. Open the curtains on sunny days and close them at night
South-facing windows are free solar heaters. Let the sun in during the day, then close heavy curtains after dark to hold the warmth in. It’s old-fashioned and it works.
3. Reverse your ceiling fans
Look for a small switch on the fan’s motor housing. In winter, set the blades to spin clockwise at low speed. That pushes the warm air that collects near the ceiling gently back down into the room. It’s especially helpful in rooms with high or vaulted ceilings.
4. Unblock your vents and radiators
Walk through the house and check. Couches, beds, rugs and that pile of laundry often sit right on top of heating vents. Every blocked vent makes the system run longer.
5. Close the fireplace damper
A cozy fire is great. An open damper with no fire is basically a chimney-sized hole in your roof that pulls warm air straight out. Close it whenever the fireplace isn’t in use (and only when the ashes are completely cold).
6. Turn your water heater down to 120°F
Many water heaters ship set at 140°F. Dropping to 120°F is plenty hot for most households, cuts standby heat loss and lowers scalding risk for kids.
Cheap fixes, under $50, that pay off fast
7. Change your furnace filter
A clogged filter makes your system strain to push air. Most filters should be checked monthly in winter and replaced at least every 1 to 3 months. It costs a few dollars, takes a minute, and is the most skipped maintenance task in America.
8. Seal drafts with weatherstripping and caulk
Here’s a trick: on a windy day, hold a lit incense stick or a strip of tissue near window frames, door edges and outlets on outside walls. If the smoke or tissue wiggles, you’ve found a leak.
- Doors: adhesive foam weatherstripping around the frame and a door sweep along the bottom
- Windows: rope caulk or removable caulk for gaps; clear caulk for permanent cracks
- Outlets and light switches on exterior walls: foam gaskets behind the cover plates, which cost pennies each
9. Use window insulation film
Those shrink-wrap window kits look a little homemade, but on older single-pane windows they make a real difference. A hair dryer tightens the film so it’s nearly invisible.
10. Get a draft stopper for the door
That fabric “snake” at the bottom of a door isn’t just your grandma’s idea. It blocks one of the leakiest spots in the house. You can make one from an old pair of jeans and some rice.
11. Install a smart or programmable thermostat
If you keep forgetting to turn the heat down (we all do), let a thermostat do it. A basic programmable model is inexpensive. Smart thermostats cost more but learn your schedule and let you adjust from your phone. Before you buy, check your utility’s website. Many utilities offer rebates that cover a big chunk of the cost, and some give them away free.
Bigger projects that pay off over years
12. Add attic insulation
Heat rises, and in many older homes it rises right out through a thinly insulated attic. If you can see the tops of your attic floor joists, you likely need more insulation. This is one of the best returns on any home improvement.
13. Get your furnace or heat pump serviced
An annual tune-up keeps the system running efficiently and catches problems before they become a no-heat emergency on the coldest night of the year. Many HVAC companies run fall specials.
14. Get a home energy audit
Many utilities offer free or low-cost energy audits. A pro uses a blower door test and sometimes thermal cameras to show you exactly where heat escapes. It takes the guesswork out of deciding what to fix first.
15. Look at federal and state incentives before replacing equipment
Tax credits and rebates for efficiency upgrades like heat pumps, insulation and new windows have changed in recent years, and what’s available depends on when you do the work and where you live. Before any big purchase, check ENERGY STAR and your state energy office for current programs, and ask a tax professional what applies to you.
Heat the person, not the whole house
This sounds obvious, but it’s the mindset shift that saves the most money. A few cozy habits:
- Layer up indoors. Wool socks and a fleece make 66°F feel like 70°F.
- Flannel sheets and an electric blanket. An electric blanket uses a tiny fraction of the energy needed to heat a bedroom.
- Close off rooms you don’t use. Shut doors to guest rooms and storage rooms. (Don’t close too many vents on a forced-air system though; it can strain it.)
- Use space heaters carefully. A space heater in the one room you’re sitting in can beat heating the whole house. Use a model with tip-over and overheat shutoff, plug it directly into the wall, never use an extension cord, and keep it three feet from anything that can burn.
Call your utility before the bill gets scary
This is the tip almost nobody uses. Utilities have programs they don’t advertise loudly:
- Budget billing spreads your yearly costs evenly across 12 months, so January isn’t a shock.
- Payment arrangements if you fall behind.
- Winter shutoff protections. Many states limit disconnections in the coldest months.
- Discount rates for seniors, veterans or lower-income households in some areas.
Call before you’re behind. It’s a much easier conversation.
If you need help paying for heat
The federal Low Income Home Energy Assistance Program (LIHEAP) helps eligible households pay heating bills and handle energy emergencies. It’s run through states, tribes and local agencies, and many open applications in October and November.
A heads-up for this winter: funding for the federal 2027 fiscal year was still being debated in Congress as of early October 2026, after the administration again proposed cutting the program. States are taking applications anyway, but money can run out, so apply early. Find your local office through the HHS LIHEAP page or by calling 2-1-1.
Other places to check: local charities, the Salvation Army, community action agencies and your utility’s own hardship fund.
Safety first, always
Saving money should never put your family at risk.
- Test your carbon monoxide detectors. Every home with a gas furnace, gas stove, fireplace or attached garage needs working CO alarms on every level.
- Never use an oven or grill to heat your home.
- Keep space heaters away from bedding and curtains, and turn them off when you leave the room or go to sleep.
- Don’t seal up combustion appliances. Gas water heaters and furnaces need air. If you’re unsure, ask a pro before sealing a utility room.
Your winter money-saving checklist
- ☐ Set thermostat to 68°F when home, lower at night and when away
- ☐ Replace the furnace filter
- ☐ Reverse ceiling fans to clockwise
- ☐ Unblock all vents and radiators
- ☐ Close the fireplace damper
- ☐ Weatherstrip doors and seal window gaps
- ☐ Lower water heater to 120°F
- ☐ Check utility rebates for a smart thermostat
- ☐ Ask your utility about budget billing
- ☐ Test carbon monoxide detectors
Heating Bill FAQ
What temperature should I set my thermostat to in winter?
There’s no single right answer, but 68°F while you’re home and awake is a common, comfortable target, with the temperature turned down 7 to 10 degrees while you sleep or are away. If you have infants, elderly family members or anyone with health conditions at home, keep it warmer and talk to your doctor about what’s safe.
Is it cheaper to leave the heat on all day or turn it down?
Turning it down is cheaper. The idea that your furnace uses more energy “reheating” the house than it saves is a long-running myth. The lower the indoor temperature, the slower your house loses heat, so you save during the setback. The one exception: some heat pumps work less efficiently if they have to recover from a big setback using backup electric heat. If you have a heat pump, use smaller setbacks or a thermostat designed for heat pumps.
Do space heaters save money?
They can, if you use one to warm the single room you’re in while keeping the rest of the house cooler. They don’t save money if you run them on top of normal central heating. Electric resistance heat is relatively expensive per unit of warmth, so use them for focused, short-term heat, and always follow the safety rules.
How much can weatherstripping really save?
It depends on how leaky your house is. In older homes with obvious drafts, sealing air leaks can make a noticeable difference in both comfort and bills. In newer, tighter homes, the savings are smaller. Either way, the materials are cheap, so it’s one of the lowest-risk improvements you can make.
Should I close vents in rooms I don’t use?
Closing one or two vents is usually fine. Closing many vents on a forced-air system can increase pressure in the ductwork, push more air out through leaks and make your system work harder. Closing doors to unused rooms is generally a safer way to save.
When should I replace my furnace?
Many furnaces last around 15 to 20 years. If yours is near that age, needs frequent repairs, or your bills keep rising despite maintenance, it may be time to get quotes. Get at least three, ask about efficiency ratings, and check for utility rebates before signing.
The bottom line
You don’t have to choose between a warm house and a reasonable bill. Start with the free stuff tonight: thermostat, curtains, fans, vents. Spend a Saturday morning and $40 sealing drafts. Then call your utility to see what they’ll pay for. Most households can knock a meaningful chunk off their winter bills without ever feeling cold. And honestly? Wool socks are underrated.
