how to lower gas bill is what I typed into my phone at 11:40 on a January night, sitting on the basement steps in a hoodie, looking at a number I had not planned for.
The bill was $178. I had budgeted $95, because $95 was what November looked like and November felt like a reasonable sample size. It was not. If your problem is the summer number, that one lives in ways to save on your electric bill and it is a different animal. This is the cold half of the year: gas, the furnace, the drafts, and the five months where the money goes.
It took me two winters to work out why, and it is the reason I now do all of this in September.
Your gas bill is not one bill, it is a five month curve
I used to think of heating as a flat monthly cost, annoying in a steady sort of way. It is not that at all.
The U.S. Energy Information Administration tracks what the average natural gas household actually spends each winter month, and the shape is brutal. For the 2025 to 2026 winter, their final numbers came out to $116 in November, $156 in December, $173 in January, $137 in February, and $104 in March. Total: $686 for the season.
Look at November against January. Same house, same thermostat, a bill that grows by about 50 percent. Nobody budgets for that, because in October the heat is barely on and everything feels fine.
The first move is arithmetic, not a tactic. Take a season total, divide by twelve instead of five, and put that away every month. Mine is $60, starting in July. By the time the January bill lands there is $360 sitting there waiting for it, and the bill stops being an emergency and goes back to being a bill. That is just a sinking fund pointed at the furnace.
The bill did not get smaller the year I started saving for it. It just stopped ruining the month.
How to lower gas bill costs: the five things that moved my number
Every list of how to lower gas bill tips I read that January was the same nine tips. I tracked two winters against each other, same apartment, and kept only what showed up on the statement. Feeling thrifty did not count.
- The furnace tune up. $89 in September. A clogged burner and a filter the tech described as “a sweater” were making the thing run long to hit the same temperature.
- Filters, on a schedule. A three pack for $34. I now change it the first weekend of October, December, and February, because I will not remember otherwise.
- Weatherstripping and a door sweep. $27 at the hardware store, one Saturday afternoon, mostly on the back door that I had been quietly ignoring for a year.
- Outlet and switch gaskets. $9 for a bag of them. Feels pointless. On exterior walls it is not.
- Setting the thermostat back at night instead of turning it off. Free, and the biggest one.
The following January my bill was $146 instead of $178. Across the whole season I came out roughly $90 ahead, on about $159 of spending, most of which was the tune up I should have been doing anyway.
That is the honest math. No trick cuts this in half. You find $30 a month in the cold months and you stop being surprised.
Do the boring stuff in September, not November
This is the part I got wrong and it cost me real money.
My first year I called for a tune up in the second week of November, when everyone in my zip code also discovered their furnace. Nineteen days for an appointment, a space heater in the meantime, and what the dispatcher cheerfully called seasonal pricing. In September that same company had an opening that week.
September is quiet. Techs are not slammed, hardware stores still have weatherstripping on the shelf, and you find out your furnace has a problem while it is still 70 degrees out. Timing is most of how to lower gas bill costs, and nobody writes that part down.
- Early September. Book the tune up. Ask what it includes and whether a filter is part of it.
- Same week. Buy the season of filters at once so future you has no excuse.
- Mid September. Do a draft walk. Close every window and exterior door, then run the back of your hand around each frame. You will feel it.
- Late September. Weatherstrip whatever your hand found. Start with the door you use least, it is usually the worst.
- Before the first cold night. Set the thermostat schedule while you are calm, not at 6 a.m. when the house is freezing.
What thermostat setting in winter actually costs you
Every winter someone tells you the magic number. I do not think there is one, and I have stopped pretending otherwise.
What my own statements show: the money is in the gap between the temperature you hold while you are home and awake, and what you let the house drift to overnight or while you are out. I hold 68 in the evening and 62 the rest of the time. Six degrees, eight hours at a stretch.
Two caveats the internet skips.
If you have a heat pump rather than a gas furnace, deep setbacks can backfire. The system kicks into backup electric heat to climb back, and that is the expensive mode. Keep the setback small, or skip it.
And if anyone in the house is elderly, very young, or unwell, this is not the lever to squeeze. A cold house is a health question before it is a budget question, and I am not going to tell you to be cold to save $14.
The mistake I made here: I bought a $180 smart thermostat before I had sealed a single draft. It scheduled beautifully. It was also faithfully heating the outdoors through my back door. Seal first, automate second.
Cozy tip: pick one September Saturday, put on a podcast, and do the draft walk and the weatherstripping in the same afternoon. Under $30, about ninety minutes. If you want somewhere to park the heating sinking fund so it stops living in your head, the free monthly budget printable has a line for it.
Budget billing: the utility program almost nobody explains properly
Most utilities offer some version of this, called budget billing or a levelized payment plan. They average your last twelve months and charge you that same amount every month, so January stops spiking. I signed up and I mostly like it. But there is a catch that never makes the sign up page, and it is why people feel tricked.
It does not lower what you owe. It moves it. And once a year there is a settlement month, sometimes called the true up, where the utility reconciles what you actually used against what you paid. If you used more than the average, that difference arrives as one bill. If nobody told you it was coming, that is a $200 surprise in a month you thought was solved.
Who it helps: anyone whose income is steady but whose nerves are not, and anyone who has ever had a shutoff notice because January landed wrong. Predictable beats optimal when the alternative is panic.
Who should skip it: if you have already got the sinking fund running, budget billing is doing the same job with less flexibility, and you cannot use the money in the meantime.
Ask your utility two questions before enrolling. When is my settlement month, and how was the average calculated. If they cannot answer the first one clearly, do not sign up that day.
When the bill is bigger than what you have got
This is the section people scroll past out of embarrassment, and it is worth the most money on the page.
There is a federal program called LIHEAP, the Low Income Home Energy Assistance Program, run through the Department of Health and Human Services and administered by your state. It helps with heating bills, and in a lot of states it also helps with a broken furnace. You can find your state’s program through the LIHEAP page at HHS, or call the National Energy Assistance Referral hotline at 1-866-674-6327, weekdays 9 a.m. to 7 p.m. Eastern.
Two things surprised me. Applications in many states open in the fall and the funding runs out, so October and January are very different experiences. And the income limits are higher than people assume. Plenty of working households qualify and never check. I wrote up the whole thing separately, including who qualifies and when the application window opens, in my guide to the home energy assistance program.
The Department of Energy also runs the Weatherization Assistance Program, which does insulation and air sealing free for households that qualify. It has served more than 7.2 million families, and it is a waitlist in most places. One more argument for asking in September.
I put that call off for most of a winter out of pride. It took eleven minutes.
What last winter actually cost, versus what was forecast
The number that changed how I budget for heat is not one of mine. In October 2025, the EIA forecast that natural gas households would spend $642 that winter, about one percent less than the year before. Cheaper winter, they said. When the season closed and the final numbers were published in April 2026, it had come in at $686 and six percent higher.
The federal agency whose entire job is forecasting this was off by $44 per household, in the wrong direction. Not because anyone was careless. Because winter does what it wants.
| Fuel | Forecast | Final | Change |
|---|---|---|---|
| Natural gas | $642 | $686 | +6% |
| Electricity | $1,133 | $1,146 | +5% |
| Propane | $1,210 | $1,286 | -3% |
| Heating oil | $1,390 | $1,749 | +15% |
Look at heating oil. Forecast $1,390, actual $1,749. A household that budgeted off the October headline was $359 short by March.
When you set your heating sinking fund, do not budget the forecast. Budget last winter’s real total plus a cushion, and if the winter is mild you end up with money left over, which is a much better problem. If you want more numbers like this to sanity check your own plan, I keep a running set in my budgeting statistics roundup.
Three mistakes that keep the heating bill high
- Turning the heat off entirely when you leave. The system then runs flat out to climb back, and in a cold snap you risk frozen pipes, which costs vastly more than you saved. Set it back, do not switch it off.
- Buying the gadget before sealing the house. A smart thermostat on a drafty house is precision heating for the outdoors. I paid $180 to learn this.
- Budgeting heat as a flat monthly number. November is not January. Flat budgeting guarantees you are short in the exact month you can least afford to be.
None of this makes winter cheap. What I can tell you after two seasons of tracking it is that how to lower gas bill costs is really a question about September, not January. It makes winter predictable, and predictable is most of what I actually wanted. If you are working through the rest of the household bills, the same logic runs through the water bill and everything else in the saving money archive.
Frequently Asked Questions
What temperature should I set my thermostat to in winter?
There is no universal number. Most guidance lands near 68 degrees while you are home and awake, with a setback of several degrees overnight and while you are out. I use 68 and 62. If anyone in the home is elderly, very young, or unwell, keep it warmer and save elsewhere.
Why is my gas bill so high all of a sudden?
Almost always the calendar rather than a fault. The average natural gas household spends roughly 50 percent more in January than in November. If your jump is far bigger than that, check whether your utility changed rates and whether the furnace filter is clogged.
Is budget billing worth it?
It is worth it if a predictable payment is what you need to avoid late fees or a shutoff notice. It does not reduce your total cost, and there is an annual settlement month where any difference between what you used and what you paid comes due at once. Ask your utility when that month falls before you enroll.
Does a furnace tune up actually save money?
In my case yes, though the savings were modest. The stronger argument is timing: a September tune up costs less than an emergency call in January, and it catches the failure before you depend on the system. Mine was $89.
Who qualifies for help with heating bills?
LIHEAP income limits are set by each state and run higher than people expect, so plenty of working households qualify. Applications open in the fall and funding runs out. Start at the HHS LIHEAP page or call 1-866-674-6327.
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