What You’ll Learn
What’s the actual difference between propane and natural gas?
Natural gas is a non-renewable fuel extracted from underground, made mostly of methane.
Propane is a byproduct of natural gas processing and crude oil refining.
Both can heat your home and run appliances, but they differ in energy efficiency, cost, environmental impact, safety, and how they’re delivered to your home.
In this blog:
This blog was updated February 2026.
You’re comparing home fuel options.
The difference between propane and natural gas feels fuzzy.
Both are gases. Both heat homes. But they’re not the same thing, and the choice affects everything from your energy bills to how you get fuel delivered.
Understanding the real differences helps you pick the right fit for your home.
Propane vs Natural Gas
Before we dive into the details, let’s cover some quick definitions.
- Natural gas is a non-renewable fuel source that we extract from underground. In nature, it occurs as a mixture of methane, butane, propane, and other gases. However, methane makes up the largest part of natural gas.
- Propane is a byproduct of natural gas processing and crude oil refining. We get it by processing natural gas or refining petroleum, and it’s also called liquefied petroleum gas, or LPG. Like natural gas, propane is colorless and odorless.
In terms of the basic propane vs natural gas uses, there’s no real difference you’ll notice in your day-to-day life.
As home fuels, both of these products allow you to heat your home, cook food, or use appliances in the same ways.
However, there are several differences in terms of a few key factors, which we’ll discuss below.
Consider the differences in the energy efficiency of propane and natural gas.
A fuel’s energy efficiency dictates how much of it you’ll use. The more efficient the fuel is, the slower you’ll use it and the less you’ll have to buy.
When we talk about energy efficiency for propane and natural gas, we use BTUs. A BTU, or a British Thermal Unit, is the amount of heat you’d need to raise the temperature of one pound of water by one degree Fahrenheit. More BTUs by volume is better.
The winner is clear: propane delivers far more BTUs than natural gas.
One cubic foot of propane offers 2,516 BTUs; one cubic foot of natural gas offers 1,030 BTUs.
In other words, propane offers over twice as many BTUs by volume as natural gas.
This means that using propane in a furnace for thirty minutes will use fewer cubic feet of it than using natural gas as a heat source for the same amount of time.
Things to keep in mind when comparing costs.
For many homeowners, the cost of their home fuel is the most important factor when deciding which to use.
Comparing costs can be difficult at first, however, as we measure propane in gallons and natural gas in cubic feet. Converting the unit is the only way to do a true comparison. In addition, the costs of both will vary over time and by location.
Natural gas may seem less expensive at first. The overall cost per gallon of natural gas tends to be lower than the cost per gallon of propane.
Consider the energy efficiency when thinking about cost.
Propane offers twice the BTUs of natural gas, meaning your household will often consume less fuel with this option and pay less in the long run.
Think about the environmental impact of propane and natural gas.
Natural gas is a non-renewable fossil fuel. The same is true of propane, which is its byproduct. As a result, neither fuel is truly “eco-friendly,” but they’re far better than emission-heavy options like coal.
Once these fossil fuels are pulled from the ground, they are both clean-burning gases. However, natural gas releases methane, a greenhouse gas, and propane does not. In addition, propane isn’t damaging to the environment before or after burning.
Consider safety when choosing a fuel source.
As you can probably imagine, both of these fuels are highly flammable. This makes it important to handle them with care and to understand the best practices for safety.
Leaks can be hard to identify, as both fuels are colorless and odorless.
Some suppliers add sulfuric scents to these products to make it easier to tell when there’s a leak. In natural gas lines, leaks can be hard to spot, and various bureaucratic and infrastructure issues can make them hard to fix as well.
Like natural gas, propane tanks can also leak and pose a fire or explosion risk. However, because the tanks aren’t connected to a gas line outside of your purview, and because you manage the tank on your own at home, leaks can be less common.
Choose a fuel source with delivery and installation that works for you.
Most homes in the U.S. are already set up for natural gas. A pipeline delivers fuel to your home, meaning that you won’t have to go out and purchase more natural gas as you use it.
If your home doesn’t yet have a natural gas pipeline, the cost of installing one can be high. Installation can cost thousands, and the process can be invasive.
Contractors may need to dig up your yard and help you convert parts of your home to natural gas appliances.
Propane doesn’t require any installation.
Instead, you’ll use fuel from a tank or a portable canister in your home. You can choose the size based on your needs, with options ranging from a 30-gallon propane tank to a 250-gallon propane tank and beyond.
When it’s time to get more propane, you can either arrange a delivery or visit a retail location for additional fuel. This portability can seem like a disadvantage in some situations, but it has its benefits.
Whether you need to power up an outdoor gas grill or get more off-grid independence in the case of a utility outage, propane is the way to go.
Get More Out of Your Fuel
When it comes to propane vs natural gas, many homeowners find that there’s a clear winner. Because it’s energy-efficient, cost-effective, safe, and more eco-friendly, propane can be a great way to get more out of your fuel!
If you’re ready to get reliable propane delivery to your Pennsylvania or Delaware property, we’ve got you covered.
Become a Kauffman Gas customer today!
FAQs
How does propane differ from natural gas?
Propane and natural gas are both popular fuels, but they have distinct differences.
Propane is a byproduct of natural gas processing and petroleum refining. It is stored and transported as a liquid under pressure but used as a gas.
Natural gas, primarily methane, is lighter than air and delivered through pipelines as a gas.
Propane has a higher energy content per cubic foot than natural gas, meaning it produces more energy when burned.
Additionally, propane can be used in areas without natural gas pipelines, making it a versatile fuel option.
Are natural gas and propane interchangeable?
While natural gas and propane are both used as home and industrial fuels, they are not directly interchangeable.
They require different air-to-fuel ratios for combustion and different types of burners and regulators.
Special conversion kits are required to switch a device from natural gas to propane use or vice versa.
It’s important to ensure that any conversion is done professionally to maintain safety and efficiency.
Is propane as unhealthy as natural gas?
Both propane and natural gas are considered clean-burning fuels, but they have some health considerations.
Propane and natural gas, when incompletely burned, can produce carbon monoxide, a harmful gas.
However, propane is nontoxic and does not pose a threat to soil or water.
Natural gas is also relatively clean, but it can release more pollutants when burned compared to propane.
Proper ventilation and regular maintenance of gas appliances are essential to minimize any health risks.
Which is cleaner, natural gas or propane?
Propane is generally considered cleaner than natural gas in terms of emissions. It burns cleaner, producing less carbon dioxide, fewer particulates, and lower amounts of other pollutants.
Propane’s higher energy content means that less fuel is required to produce the same amount of heat or energy, contributing to its environmental efficiency.
Natural gas is cleaner than other fossil fuels, but it still emits more pollutants than propane when burned.
This makes propane a preferable choice for environmentally conscious consumers.