How much heating oil does a house use? A house that heats with oil used 551 gallons a year on average in EIA’s 2020 survey, with a median of 502. Half of oil-heated homes fell between 319 and 706 gallons. For this winter alone, EIA forecasts 402 gallons from November through March.
Key Takeaways
- Oil-heated homes used an average of 551 gallons in 2020, 455 of them for space heating (EIA RECS 2020, Table CE4.6).
- The middle half of oil-heated homes used 319 to 706 gallons; one in ten used 974 or more (our tabulation of EIA RECS microdata).
- New England households using fuel oil averaged 602 gallons in 2020; the South averaged 318 (EIA RECS 2020, Table CE2.1).
- EIA expects $5.26 a gallon this winter, up 34%, for a $2,115 winter bill despite fewer gallons (EIA Winter Fuels Outlook).
- The median oil-heated home burned one gallon per 13.5 heating degree days in 2020, its K-factor, our calculation from RECS microdata.
- 4.13 million US households heated mainly with oil in 2026, down from 5.05 million in 2021; 3.39 million are in the Northeast (EIA Table WF01).
How much heating oil does a house use in a year?
A house that heats mainly with oil used 551 gallons of fuel oil or kerosene in 2020, according to the 2020 Residential Energy Consumption Survey (RECS) Table CE2.1. It is the latest federal measurement, covering 4.93 million oil-heated homes.
The average hides a wide range. Our weighted tabulation of the RECS 2020 microdata, covering 1,097 sampled oil-heated homes, gives a median of 502 gallons, a 25th percentile of 319 and a 75th percentile of 706. The “300 to 800 gallons” repeated across the web has no traceable source.
2020 was mild. Oil-heated homes saw 5,498 heating degree days that year, against a 1981 to 2010 normal of 6,069 at the same locations. Scaling each home’s space-heating gallons to its normal gives about 599 gallons, the better planning figure for an ordinary winter. Our breakdown of which fuels heat American homes, by region shows how concentrated oil is.
How much heating oil does a house use in your region and state?
New England houses use the most: households there that burned fuel oil averaged 602 gallons in 2020, the highest of any census division in RECS Table CE2.1. This table counts every home using oil, including those using it only for hot water or a second heater.
| Region (2020) | Average gallons per household using fuel oil | Source |
|---|---|---|
| United States | 507 | EIA RECS 2020, CE2.1 |
| Northeast | 542 | EIA RECS 2020, CE2.1 |
| New England | 602 | EIA RECS 2020, CE2.1 |
| Middle Atlantic | 491 | EIA RECS 2020, CE2.1 |
| Midwest | 452 | EIA RECS 2020, CE2.1 |
| West | 439 | EIA RECS 2020, CE2.1 |
| South Atlantic | 340 | EIA RECS 2020, CE2.1 |
| South | 318 | EIA RECS 2020, CE2.1 |
EIA does not publish gallons by state, so we tabulated the microdata for the ten states with at least 30 sampled oil-heated homes. These are small-sample estimates; treat a 20 or 30 gallon gap between states as noise.
| State | Average gallons, oil-heated homes, 2020 | Sampled homes |
|---|---|---|
| Alaska | 718 | 71 |
| Massachusetts | 638 | 149 |
| Connecticut | 634 | 126 |
| New Hampshire | 605 | 71 |
| Rhode Island | 595 | 67 |
| Maine | 586 | 110 |
| Vermont | 542 | 107 |
| Pennsylvania | 542 | 81 |
| New York | 526 | 152 |
| New Jersey | 448 | 33 |
Climate is not the whole story. Oil-heated homes in Vermont saw 7,416 heating degree days in 2020 and Maine 7,058, against 5,292 in Connecticut, yet both burned fewer gallons, so size, insulation and secondary heat matter too. Our 41-season degree day index shows how much one winter can differ from the next in the same state.
How much heating oil will a house use this winter?
EIA forecasts that the average oil-heated house will burn 402 gallons between November 1, 2026 and March 31, 2027, 9% less than the 443 gallons of last winter. The Winter Fuels Outlook, published October 6, 2026, calls for 4,331 heating degree days in the Northeast, 12% fewer than last winter.
| Month | Winter 2025-26 (gallons) | Winter 2026-27 forecast (gallons) |
|---|---|---|
| November | 67 | 62 |
| December | 100 | 85 |
| January | 110 | 97 |
| February | 96 | 83 |
| March | 70 | 75 |
| Season total | 443 | 402 |
Source: EIA Winter Fuels Outlook Tables WF01 and WF02, October 2026. Per household heating primarily with oil, US average, including water heating.
Weather is the swing factor: EIA’s 10% colder case puts use at 436 gallons and its 10% warmer case at 377. The four winters before last ran 417, 386, 388 and 416 gallons. Of the 402 forecast gallons, 341 are for space heating and about 61 cover water heating and other uses.
Fewer gallons will not mean a smaller bill: EIA forecasts $5.26 a gallon, up 34%, and a $2,115 winter bill, up 21%. Our report on where the retail heating oil price stands now follows that number through the season, and the fuel-by-fuel winter cost forecast sets oil against gas, propane and electricity.
How much heating oil does a house use per day?
In January the average oil-heated house burns about 3.1 gallons a day: EIA’s forecast of 97 gallons for January 2027, divided by 31 days. November runs about 2.1 gallons a day; last January’s 110 gallons worked out to about 3.6.
Daily use tracks outdoor temperature. Each degree the daily average falls below 65°F adds one heating degree day, which NOAA’s Climate Prediction Center calls an index of the energy demand to heat buildings. Divide the day’s degree days by your K-factor and add a hot water base load.
| Daily average outdoor temperature | Heavier user, K 9.1 (gal/day) | Median home, K 13.5 (gal/day) | Lighter user, K 21.3 (gal/day) |
|---|---|---|---|
| 50°F | 2.1 | 1.5 | 1.1 |
| 40°F | 3.1 | 2.3 | 1.6 |
| 30°F | 4.2 | 3.0 | 2.0 |
| 20°F | 5.3 | 3.7 | 2.5 |
| 10°F | 6.4 | 4.5 | 3.0 |
A 10°F day triples a median home’s burn compared with a 50°F day, which is why reading the tank gauge matters more in a January cold snap than any annual average.
Heating oil usage calculator: the degree day method
The most accurate heating oil usage calculator is your own delivery history plus degree days. The oil trade calls the result a K-factor, which Oil & Energy magazine defines as degree days per gallon. Dealers use it to time automatic deliveries; you can compute it in five steps.
- Take two fill-to-full deliveries. The second ticket’s gallons are what the house burned in between.
- If oil also heats your water, subtract a base load: EIA’s winter figures imply about 0.4 gallons a day of non-heating use.
- Total the heating degree days for those dates. NOAA’s Climate Prediction Center publishes weekly and monthly figures by city and state.
- Divide degree days by heating gallons. That is your K-factor.
- Divide a season’s expected degree days by your K-factor and add back the season’s base load.
A worked example, our arithmetic: a house takes 180 gallons after 60 days that saw 2,000 degree days. Removing 24 gallons of base load leaves 156, so the K-factor is 12.8. EIA’s forecast of 4,331 Northeast degree days for this November through March then implies about 338 heating gallons, plus 61 for hot water: 398 gallons for the winter, close to EIA’s national figure.
Why square-foot rules of thumb mislead
In the 2020 survey, oil-heated homes averaged 2,154 square feet and burned about 0.26 gallons per square foot a year, our tabulation. But K-factors from 9.1 to 21.3 mean two same-size houses can differ by hundreds of gallons. Measure your own house before trusting any per-square-foot chart.
If you buy on cash or will-call delivery, a K-factor tells you when to call before the tank runs low.
Does a bigger house burn proportionally more oil?
No. Gallons rise with floor area, but more slowly than the square footage. In RECS 2020, oil-using homes of 2,500 to 2,999 square feet averaged 562 gallons, only 14% more than the 492 gallons of homes of 1,500 to 1,999 square feet, despite roughly half again the floor area.
Building type matters as much as size. Single-family detached homes that used fuel oil averaged 581 gallons, while apartments in buildings of five or more units averaged 224. If you are sizing a replacement burner or boiler rather than budgeting fuel, our explainer on how an oil heating system works covers the equipment side.
What actually lowers the gallons?
Three levers have federal numbers behind them: thermostat setback, air sealing with insulation, and oil-fired hot water. Each is worth up to about a tenth of the bill or, for hot water, a fixed block of about 142 gallons a year.
| Lever | What the federal source says | Source |
|---|---|---|
| Thermostat setback | Save as much as 10% a year on heating and cooling by setting back 7 to 10°F for 8 hours a day | DOE Energy Saver (archived copy) |
| Air sealing and insulation | Up to a 10% savings on annual energy bills | ENERGY STAR |
| Oil-fired water heating | 142 gallons a year in oil-heated homes that heat water with oil | EIA RECS 2020, CE4.6 |
The Department of Energy’s setback guidance adds that the percentage saved is greater in milder climates than in severe ones. Our page on what DOE says a winter setback saves works through the settings. ENERGY STAR puts sealing and insulation at up to 10% of annual energy bills, and a blower door test during an energy audit shows where the leaks are before you pay for the work.
Hot water is the overlooked block: 46% of oil-heated homes also heated water with oil in 2020, our tabulation, and EIA puts that use at 142 gallons a year. Households weighing a heat pump to carry the mild months while oil covers the coldest days can see how that split works in our dual fuel heating explainer.
How we researched this
Research date: October 8, 2026. We opened 24 sources and cite 10. Annual figures come from EIA’s 2020 RECS tables (released 2023, revised March 2024). Medians, percentiles, state averages, K-factors and the weather-normalized figure are our weighted tabulation of the RECS public-use microdata; our weighted mean reproduces EIA’s published 551 and 455 gallons exactly. Winter figures come from EIA’s October 6, 2026 Winter Fuels Outlook.
Freshness: five sources are current 2026 data or pages, three carry 2020 survey data, one is a 2025 archived DOE page and one is a 2014 trade article used only to define a term. We excluded supplier blogs, UK litre-based pages, scraped pages and forum posts as sources of numbers, and did not use Reddit. Update schedule: monthly through March 2027 with each EIA outlook, and when EIA publishes its next RECS consumption tables.
Frequently asked questions
How long does a 275-gallon tank of heating oil last?
About 88 days at a typical January burn rate, our arithmetic. The Maine Attorney General calls 275 gallons the standard home tank, and EIA forecasts 97 gallons of use per oil-heated household in January 2027, about 3.1 gallons a day. You refill well before empty, so expect fewer days between deliveries.
How much heating oil does a house use per month?
From 62 to 97 gallons a month this winter, according to EIA’s Winter Fuels Outlook. November is forecast at 62 gallons per oil-heated household, January peaks at 97, and March falls back to 75. Last winter, which was colder in the Northeast, January reached 110 gallons.
How much heating oil goes to hot water?
About 142 gallons a year in an oil-heated home that also heats its water with oil, according to EIA’s 2020 RECS Table CE4.6. EIA’s winter forecast assigns about 61 gallons of the 402 forecast for November through March to water heating and other non-heating uses.
How much will it cost to heat a house with oil this winter?
EIA forecasts an average of $2,115 from November through March for a household heating mainly with oil, up 21%, with heating oil at $5.26 a gallon. That is the highest of the four main heating fuels; our average heating bill comparison by fuel shows the full spread.
Are fewer homes using heating oil?
Yes. EIA counts 4.13 million households heating mainly with oil in 2026, down from 5.05 million in 2021, a decline in every year of that run. About 3.39 million are in the Northeast. EIA estimates oil heats about 3% of US households.
How many gallons of heating oil per square foot does a house use?
About 0.26 gallons per square foot a year, our tabulation of EIA’s 2020 RECS microdata for oil-heated homes, which averaged 2,154 square feet. That ratio varies widely with insulation, climate and equipment, so a K-factor from your own delivery tickets is a far better guide than any per-square-foot estimate.
Sources
- U.S. Energy Information Administration. “2020 RECS Table CE2.1: Annual household site fuel consumption, totals and averages.” https://www.eia.gov/consumption/residential/data/2020/c&e/xls/ce2.1.xlsx. Accessed October 2026.
- U.S. Energy Information Administration. “2020 RECS Table CE4.6: Annual household site end-use consumption by fuel, averages.” https://www.eia.gov/consumption/residential/data/2020/c&e/xls/ce4.6.xlsx. Accessed October 2026.
- U.S. Energy Information Administration. “2020 RECS public-use microdata file, version 7.” https://www.eia.gov/consumption/residential/data/2020/csv/recs2020_public_v7.csv. Accessed October 2026.
- U.S. Energy Information Administration. “Winter Fuels Outlook 2026-27.” https://www.eia.gov/outlooks/steo/report/perspectives/2026/10-winterfuels/article.php. Accessed October 2026.
- U.S. Energy Information Administration. “Winter Fuels Outlook Tables WF01 and WF02, October 2026.” https://www.eia.gov/outlooks/steo/report/perspectives/2026/10-winterfuels/wf01.xlsx. Accessed October 2026.
- NOAA Climate Prediction Center. “Degree Day Statistics explanation.” https://www.cpc.ncep.noaa.gov/products/analysis_monitoring/cdus/degree_days/ddayexp.shtml. Accessed October 2026.
- U.S. Department of Energy, Energy Saver. “Programmable Thermostats” (archived copy). https://web.archive.org/web/2025id_/https://www.energy.gov/energysaver/programmable-thermostats. Accessed October 2026.
- ENERGY STAR. “Seal and Insulate.” https://www.energystar.gov/saveathome/seal_insulate. Accessed October 2026.
- Maine Attorney General. “Home Heating Fuels.” https://www.maine.gov/ag/consumer-protection/consumer-help-topics/housing/home-heating-fuels. Accessed October 2026.
- Oil & Energy Online (trade magazine). “Special K Factor,” July 2014. https://oilandenergyonline.com/articles/all/special-k-factor/. Accessed October 2026.
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