Heating Oil vs. Propane: Which Is Right for Your Home?

If you're building a new home, replacing your heating system, or just wondering whether the grass is greener on the other side, you've probably asked: should I use heating oil or propane?

Both are popular in the Northeast, and both have real advantages. Here's a practical breakdown to help you decide.

Cost Per BTU: Heating Oil Wins

Heating oil contains about 138,500 BTUs per gallon. Propane contains about 91,500 BTUs per gallon. That means you need roughly 1.5 gallons of propane to match the heat output of one gallon of oil.

Even when propane is cheaper per gallon, the math often favors oil once you account for energy content. At $3.50/gallon for oil and $2.80/gallon for propane, heating oil still costs less per BTU delivered.

Availability and Delivery

In most of the Northeast, heating oil is easier to get. There are hundreds of independent dealers competing for your business, which keeps prices competitive. You can switch dealers at any time — no contracts required with most companies.

Propane delivery is more consolidated. You typically sign up with one provider who owns the tank on your property. Switching providers can mean having the old tank removed and a new one installed, which creates friction and limits competition.

Storage and Safety

Heating oil is stored in a tank (usually in the basement or buried outside). It's not explosive — you could drop a match in a bucket of heating oil and it would go out. It only burns when atomized by a burner nozzle.

Propane is stored under pressure and is flammable as a gas. While modern propane systems are very safe, leaks are a more serious concern. Propane is heavier than air, so leaks can pool in basements — which is why propane tanks are always outside.

Equipment and Maintenance

Oil furnaces and boilers are well-understood technology with decades of refinement. Most HVAC technicians in the Northeast are experienced with oil systems. Annual tune-ups are recommended and typically cost $150–$250.

Propane systems tend to require less maintenance and burn cleaner. If you're installing a brand new system, propane equipment can be slightly less expensive upfront, and modern propane furnaces achieve very high efficiency ratings.

Environmental Considerations

Neither is a zero-emission option. Propane burns cleaner with fewer particulates. Heating oil has been getting cleaner — Bioheat blends (B5, B20) mix biodiesel with traditional heating oil and are increasingly common across the Northeast, reducing carbon output significantly.

Several Northeast states are mandating higher Bioheat blends in coming years, which will continue to narrow the environmental gap.

So Which Should You Choose?

If you already have an oil system that works well, there's rarely a financial case to switch. The conversion cost ($5,000–$10,000+) takes years to recoup, if ever.

If you're starting fresh, consider propane if you want lower maintenance and cleaner burning, or oil if you want lower fuel costs and more dealer competition in your area.

Either way, the biggest factor in your heating bill isn't which fuel you use — it's whether you're comparing prices and getting competitive quotes. A homeowner who shops around for oil will almost always pay less than one who sticks with a single propane provider out of inertia.