Propane vs. Heating Oil: Which Is Better for Your Home?
Choosing between propane and heating oil is a big deal for New England homeowners trying to keep warm through long winters. The real question isn’t about which fuel is “best” in some universal sense, but which one is the best fit for your house, budget, and the way you live.
It all comes down to things like heat output per gallon, how efficient your equipment is, storage specifics, maintenance, and whether you want to use the fuel for more than just heat. Heating oil gives you about 138,500 BTU per gallon, propane around 91,452 BTU. So just glancing at per-gallon prices barely scratches the surface. Efficiency, burner tech, and how much fuel you burn each year all change the equation.
This guide digs into the nuts and bolts of propane vs. heating oil so you can make a decision that works for you. Whether you’re thinking about swapping fuels or upgrading your system, knowing how they stack up on performance, versatility, and long-term value really helps narrow things down.
Comparing Propane and Heating Oil for Home Heating
Heating oil delivers more BTUs (British Thermal Units) per gallon than propane, but that’s not the end of the story. Efficiency, price volatility, equipment choices, and environmental impact all matter, too.
Heat Output and Energy Efficiency
Heating oil clocks in at about 138,500 BTU per gallon, while propane sits at roughly 91,452 BTU. But, here’s where it gets interesting. Modern propane furnaces can hit AFUE (Annual Fuel Utilization Efficiency) ratings of 95% or higher, squeezing nearly every bit of heat out of the fuel. Heating oil furnaces usually land between 85% and 90%, though some of the latest condensing models are catching up.
So, a house with a 95% AFUE propane furnace might burn less fuel overall than one running an 85% AFUE oil furnace, even though each gallon of propane has less energy. The equipment matters just as much as the fuel itself.
Fuel Costs and Price Dynamics
Comparing propane and heating oil prices isn’t as simple as checking the statement at delivery.
Heating oil prices can swing with global crude oil markets: think geopolitics, refinery bottlenecks, and other world events that are beyond your control. Propane, on the other hand, is primarily produced in the United States, so its price tends to be more stable with the exception of occasional price spikes due to agricultural demand, increased exports, and local weather/transportation-related supply hiccups. Typically, the prices of both fuels increase during the winter when demand is high.
To really get at heating costs, you have to divide the per-gallon price by the actual usable BTU after factoring in how efficient your system is. If you’re paying $3.00/gallon for propane and running a 95% AFUE furnace, you’re getting about 86,879 usable BTU per gallon. If you’re paying $3.50/gallon for heating oil in an 85% AFUE furnace, that’s roughly 117,725 usable BTU per gallon. The numbers shift with every price change and equipment swap.
Equipment: Furnaces and Storage Tanks
Propane and heating oil furnaces aren’t built the same way, and they don’t require the same care. Propane burns cleaner, which can result in fewer service visits.
Heating oil furnaces need a technician to come out every year for cleaning and nozzle swaps to keep things running smoothly. Propane systems still need a yearly check, but it’s usually less involved.
Storage is another thing to think about. Heating oil tanks can go in the basement, and most New England homes already have one. Propane tanks have to be outside, either above ground or buried, and most people lease them from their supplier, though you can buy them if you want.
Tank size isn’t just a detail. The fuel inside a 275-gallon oil tank doesn’t last the same number of days as a 500-gallon propane tank: it all depends on how much heat your house needs and how efficient your system is.
Environmental Impact and Emissions
Propane burns cleaner than oil, putting out fewer particulates and less sulfur dioxide. You’ll still get carbon dioxide, but not as much soot or ash left behind in your system.
Neither fuel is renewable on its own, but many people are turning to eco-friendly propane to reduce their carbon footprint. Propane gives off about 12% less carbon per BTU than heating oil, though high-efficiency oil systems can close that gap. If clean burning is your top priority, propane is an appealing option. If you prefer a fuel with a deeply established local infrastructure and high energy density, heating oil remains a reliable choice.
Making the Best Choice for Your Home
Ultimately, the best fuel depends on local prices, how you currently heat your home, and whether you want to run other appliances off the same fuel. Some houses are just set up better for oil, while others get more out of propane’s flexibility.
When Heating Oil Makes Sense
If you’ve got newer heating oil equipment that’s working well, there may not be much reason to convert. A modern heating oil furnace or boiler, kept in good shape, will keep you warm for years. Plus, since heating oil has more BTU per gallon, you don’t usually need as many gallons to get the job done.
Heating oil’s a good fit if:
- Your existing tank is solid and well maintained
- You’ve recently upgraded your furnace or boiler
- Local heating oil prices are on par with propane when you compare BTU for BTU
- You only need fuel for heat and hot water
Benefits of Choosing Propane
Propane’s big draw is its efficiency and versatility. It can run your heat, water heater, stove, dryer, even a generator. If you want one fuel for a bunch of things, propane’s hard to beat.
Some more propane perks:
- Multi-use: Heating, cooking, backup power, you name it
- Can work when the power’s out: propane appliances don’t always need electricity
- Cleaner burn: Less soot and particulate mess
- Tank options: Above or below ground, depending on your yard
Factors to Consider When Switching
Switching fuels isn’t just about calling a new supplier. You’ll need new equipment or a conversion kit, and a propane tank has to go somewhere on your property. Those upfront costs need to be weighed against any long-term savings.
Stuff to keep in mind:
- Equipment costs: new furnace, boiler, or conversion kit
- Tank install: above or underground, and whether you rent or buy
- Old tank removal: you might need to decommission or remove the oil tank
- Price trends: propane vs. heating oil
It’s smart to think about whether you’ll add more propane appliances down the road, since that can tip the scales in favor of switching. Look at both the upfront costs and what you’ll save (or spend) over the years.
Long-Term Planning and Seeking Expert Advice
The right answer really varies from house to house. Dead River Company can take a look at what you have, explain your options, and give you expert advice about whether it’s best to stick with heating oil or convert to propane. We deliver both fuels and service all kinds of boilers and furnaces so we have the knowledge and experience to recommend the right heating system for your home and what matters to you.
Whether it's your fuel, your equipment, or your service needs, our goal is always the same: lasting comfort and peace of mind. You can count on the experts at Dead River Company to show up when you need us, because New England weather doesn't quit, and neither do we. Have more questions? Contact us to talk to a local expert.
