How Home Heating Works for Rural Homes

Your furnace doesn't burn dollars — it burns BTUs, and then your wallet catches up. The single most useful idea in home heating is that every fuel can be reduced to one number: dollars per million BTUs of heat actually delivered into your house. Once you can compute that, oil vs. propane vs. a heat pump stops being a debate about which fuel is "better" and becomes arithmetic.

Rural homes mostly heat with whatever reaches the property. There's usually no gas main on your road, so it's oil, propane, wood, pellets, or electricity. This guide covers how each one actually works, what it costs to run at today's dated prices, what the equipment costs, and how to do the comparison yourself.

The side-by-side: what a dollar of heat actually costs

The math is: price ÷ (energy per unit × system efficiency). Efficiency matters as much as the fuel — a gallon of oil in an 85% furnace delivers less heat than the same gallon in a 95% one.

Here's a worked example using dated prices. These are illustrations, not quotes — fuel prices move constantly, which is exactly why the heating fuel cost calculator exists with editable inputs.

Two things jump out. First, natural gas is the cheapest delivered heat by a wide margin — where you can get it, which most rural properties can't. Second, resistance electric heat (baseboards, electric furnaces) is the most expensive way to heat anything; a heat pump delivering the same heat at a COP of 2.5 cuts that bill by more than half.

Price sources: EIA Short-Term Energy Outlook (released Sept 9, 2026); NH Dept. of Energy fuel-price table (Sept 3, 2026); energy content from DOE and the NH DOE fuel table. The propane figure is the EIA weekly average from the final week of the 2025–26 heating season — weekly reporting resumes each October.

How the heat gets around your house

Before the fuels, one structural idea: every heating system is two decisions — what burns (or what moves heat) and how the heat travels. The delivery side comes in four flavors:

• Forced air. A furnace heats air and ducts push it through the house. Fast response, and the same ducts can carry air conditioning. Ducts leak, though — especially old ones in crawlspaces.
• Hydronic. A boiler heats water and pumps it to baseboards, radiators, or radiant floor tubing. Slower to respond, very even heat, no dust blowing around. Common where oil boilers have been around for decades.
• Direct / space heating. Stoves, wall heaters, and ductless heat-pump heads heat the room they're in. The most efficient way to heat a room; the challenge is getting heat to the far rooms.
• Electric baseboard. Resistance heat in every room. Dead simple, zero maintenance, roughly 100% efficient at turning electricity into heat — and heat delivered this way is the most expensive kind there is.

Heating oil: the Northeast workhorse

Oil heat is a furnace or boiler burning No. 2 fuel oil, delivered by truck and stored in a tank on your property. About three-quarters of U.S. heating-oil use is in the Northeast, per the National Energy Assistance Directors Association — if you heat with oil, you're probably in New England, New York, or Pennsylvania.

How it works. A burner atomizes the oil into a fine mist and ignites it; a furnace pushes the heated air through ducts, a boiler pushes hot water to baseboards. Each gallon carries about 138,500 BTU. A typical in-place oil furnace runs 83–89% AFUE (annual fuel utilization efficiency — the share of the fuel's energy that becomes heat in your house), so a gallon actually delivers roughly 115,000–123,000 BTU.

What it costs to run. This is the painful part right now. EIA's September 2026 Short-Term Energy Outlook projects residential heating oil at $5.10/gallon for 2026, versus $3.62 in 2025. The National Energy Assistance Directors Association estimated in September 2026 that households heating with oil would spend nearly $2,300 for the mid-November to mid-March season — about 31% more than the winter before. At $5.10 and 85% efficiency, that's about $43 per million BTU of delivered heat.

What the equipment costs. Replacing an oil furnace runs roughly $4,000–$10,000 installed, with ~$5,000 typical (national cost guides, 2026). What moves the number: chimney and flue work (oil needs a chimney; the flue liner condition matters), whether the old tank stays or goes, duct or baseboard modifications, and region.

Maintenance. Annual pre-season check-ups are the standard professional recommendation: burner tune, nozzle and filter change, soot check. Oil equipment is the most maintenance-hungry of the central-heat options, and a neglected burner burns money as soot.

Propane: the rural piped-fuel equivalent

Propane is what you get when there's no gas main and you don't want oil. It's delivered by truck into a tank on your property and burns in a furnace, boiler, or wall heater much like natural gas does — propane is, chemically, just a different gas fuel.

How it works. A gallon of propane carries 91,333 BTU. Propane furnaces run 80–98% AFUE, with condensing (high-efficiency) models at 88–95%. Because propane is a gas at room temperature, the burner is cleaner and simpler than an oil burner's.

The tank question. This is the part oil doesn't have. If you lease the tank, it's the company's property — only that company may fill it. If you own the tank, you can shop suppliers for price, which is where the real savings hide. Buying and installing a tank runs roughly $1,700–$4,300; renting one runs about $50–$200 a year (national cost guides, 2026 — market sources, not government figures). Tanks are filled to 80% by rule, same as the generator math elsewhere on this site.

What it costs to run. EIA's weekly residential propane series ended the 2025–26 heating season around $2.67/gallon nationally — but propane prices swing hard by region. New Hampshire's energy office recorded $4.02/gallon on September 3, 2026, versus the $2.67 national end-of-season average. At the national figure and 92% efficiency, that's about $32 per million BTU; at New Hampshire's price, it's about $48. Your contract price is the only price that matters — which is why every number on this page is editable in the calculator.

What the equipment costs. A propane furnace replacement runs roughly $2,200–$8,000 installed, with national cost guides averaging near $4,000–$4,800 (2026). Switching an existing oil furnace to propane with a conversion kit runs about $150–$500 for the kit plus labor — worth pricing if you're comparing fuels, not just furnaces.

Natural gas: the cheap one you probably can't get

Natural gas at recent prices is the cheapest delivered heat in the country — around $13 per million BTU at New Hampshire's September 2026 residential price of $1.26/therm and 95% efficiency. It's also, for most rural properties, theoretical: if no gas main runs down your road, this option doesn't exist, and extending one to a single house costs far more than any heating bill it would reduce.

One regulatory note worth knowing if you do have gas: a DOE rule finalized in recent years requires new residential gas furnaces to hit at least 95% AFUE starting late 2028. If you're buying a gas furnace now, the high-efficiency (condensing) models are where the market is headed anyway.

Heat pumps: the math problem everyone should run

A heat pump doesn't make heat — it moves it, from the outside air into your house (in heating mode). Because moving heat takes less energy than creating it, a heat pump delivers 1.5 to nearly 4 units of heat per unit of electricity, depending on the equipment and the outdoor temperature. That ratio is the COP (coefficient of performance). A COP of 2.5 means 250% "efficiency" in furnace terms.

Cold-climate reality. This is the question that matters in the Northeast and Upper Midwest. Modern cold-climate heat pumps are rated to keep working well below freezing — the industry spec (Northeast Energy Efficiency Partnerships) requires a COP above 1.75 at 5°F at full capacity. DOE's Cold Climate Heat Pump Challenge pushed manufacturers toward reliable operation at −15°F, and prototypes have run to −23°F. Translation: a properly sized cold-climate unit heats through a real winter; it just makes less heat per watt the colder it gets, and at the coldest snaps it needs help.

The backup-heat setup. The honest cold-climate configuration keeps the old system (oil, propane, or electric resistance) as backup, with its thermostat set 3–5°F below the heat pump's, and runs the backup enough in extreme cold to protect pipes. One caution from cold-climate field guidance: electric-resistance backup sized to carry the whole house can draw three or more times the home's normal peak electricity and may require a panel upgrade. Size the backup, don't just bolt it on.

What it costs to run. At 18.20¢/kWh (EIA, Sept 2026) and a COP of 2.5, delivered heat costs about $21 per million BTU — half of oil at $5.10/gallon. At a COP of 1.75 on a 5°F night, it's about $30 — still cheaper than oil, roughly tied with cheap propane.

What the equipment costs. A ductless mini-split runs roughly $2,000–$6,000 installed for a single zone (about $3,500 typical), $6,500–$16,000 for 2–4 zones, with cold-climate-rated models carrying a $1,000–$2,500 premium. A ducted central heat pump runs roughly $8,000–$18,000 installed, about $14,500 typical. What moves the number: zones and heads, electrical panel work, whether existing ducts are usable, and the cold-climate rating.

Maintenance. Ductless heads need their filters cleaned monthly; ducted systems need filter changes about every 90 days; professional service every 1–2 years is the manufacturer-and-warranty norm (NYSERDA guidance).

Wood and pellets: the hands-on option

Wood heat is the cheapest fuel on this page if your labor is free and the wood is local — and the most expensive if you value your weekends. Go in with both eyes open.

How they work. An EPA-certified wood stove burns cordwood at 59–80% efficiency (higher-heating-value basis, per EPA's certified-stove database); 2020 federal standards cap emissions at 2.0 grams per hour. Pellet stoves burn compressed pellets — automatically fed by an auger — at 70–83% efficiency, with heating capacities from 8,000 to 90,000 BTU/hour (EPA Burn Wise). Pellet quality varies; the Pellet Fuels Institute runs a voluntary third-party Standards Program, but the U.S. has no mandatory pellet-fuel standard.

The wood rules. Burn wood under 20% moisture — season softwood about 6 months, hardwood a year or more (EPA Burn Wise). Wet wood is the main reason wood heat disappoints: it burns cool, makes creosote, and delivers far less heat per cord. Have the chimney and appliance inspected at least once a year (that's NFPA 211, via the Chimney Safety Institute), and have a pellet stove professionally cleaned at least once a year.

What it costs. A cord of firewood runs about $275–$400 (market, regionally variable); pellets run $300–$400 a ton. Installed, a wood stove with chimney work runs roughly $3,000–$9,000 or more — the chimney is the entire swing: replacing a stove on an existing chimney is the cheap case, building a new chimney through two floors is the expensive one. A freestanding pellet stove runs roughly $1,600–$4,100 installed.

The catch nobody prices. Pellet stoves need electricity — the auger, igniter, and blower all run on it. In an outage, a pellet stove is a very heavy paperweight unless it has a battery backup (roughly $150–$600 as an add-on). Wood stoves don't care about the grid, which is half their rural appeal.

The $/MMBTU method: do the comparison with your own numbers

National averages are a starting point; your contract price, your tank, and your equipment's real efficiency are the answer. Here's the method, worked with two fuels:

1. Price per unit — from your last bill or your supplier's quote ($/gallon, $/therm, ¢/kWh, $/cord, $/ton).
2. Energy per unit — oil 138,500 BTU/gal; propane 91,333; natural gas 100,000/therm; electricity 3,412/kWh; firewood by species (white oak ≈ 27 MMBTU/cord); pellets ≈ 8,200 BTU/lb.
3. Your efficiency — the AFUE on the furnace nameplate, the COP in the heat pump specs, ~70–80% for a decent stove.
4. Divide: price ÷ (energy × efficiency). That's your $/MMBTU.

Worked example: oil at $5.10/gal and 85% AFUE = $5.10 ÷ 0.1177 MMBTU = $43/MMBTU. Propane at $2.67/gal and 92% AFUE = $2.67 ÷ 0.0840 MMBTU = $32/MMBTU. Same arithmetic, every fuel.

The heating fuel cost calculator runs all seven side by side with your prices and efficiencies, and converts the result to an estimated annual cost if you enter your home's yearly heating load. If you don't know your load, estimate it from last winter's fuel bills: gallons × BTU × your efficiency.

What equipment costs, honestly

What moves the number: chimney and flue condition (oil and wood), duct condition and whether ducts exist at all (forced air and ducted heat pumps), electrical panel capacity (heat pumps with resistance backup), the number of zones/heads (ductless), whether you own or lease the propane tank, and — for all of them — local labor rates and permits. These ranges come from national cost guides, not quotes; get three local ones.

Which setup fits your situation?

When a new heating system won't help

• A leaky house. Heating is usually the largest energy bill in a cold-climate home, and no furnace outruns bad insulation and air leaks. Air-sealing and attic insulation routinely beat a higher-AFUE furnace on dollars per dollar. This is our opinion, but it's the consensus one.
• Wrong sizing. An oversized furnace short-cycles (loud, inefficient, short-lived); an undersized heat pump leans on expensive resistance backup all winter. Sizing is a Manual J calculation, not a rule of thumb.
• Bad ducts. A 95% furnace pushing air through leaky, uninsulated ducts in a cold crawlspace delivers far less than 95% to the rooms. Seal and insulate ducts before upgrading the box.
• Fuel logistics. An empty oil tank means a service call, not just a delivery — run-dry oil systems need the burner primed. Propane at 80% fill in January with a locked-in price is a different number than spot price in March; compare like with like.
• One winter of prices. Fuel prices move. Size the decision on several years of your actual bills, not one spike — the calculator is built for exactly that.