You have picked a standby generator. Now one choice is left. Which fuel should power it when a storm knocks out your McKinney home? Pros use a simple rule to start. If your home already has a gas line, the answer is often easy. If it does not, the answer can flip the other way.
Both fuels run a standby generator well, but they differ in supply, power, and cost. This guide compares a natural gas vs. propane standby generator, so you can choose the right fuel for your home. We handle whole-home generator installation in McKinney for homes across McKinney and Collin County. The right fuel depends on what your home already has and how you plan to use it.
Below, we cover fuel supply and runtime during an outage. We look at power output, then cost and install. After that, we help you decide which fuel fits your home best.
A natural gas standby generator connects to your home's gas line. It draws a steady, continuous fuel supply. You never store fuel or schedule refills.
A propane standby generator draws from a tank on your property. You refill that tank as needed. Propane holds more energy per unit and stores for years without going bad.
Natural gas is often cheaper per unit and needs no tank. Propane is the go-to when a home has no gas line. The right fuel depends on whether you have gas service, plus your space and outage needs.
Want help picking the right fuel for your home? See our options for standby generator installation in McKinney.
The two fuels split along a few clear lines. Here is the fast head-to-head.
Natural gas is piped into your home for a continuous supply. Propane is stored in a tank on your property that you refill. That difference in delivery shapes much of your choice.
Energy density is another split. Propane holds about 2,500 BTU per cubic foot. Natural gas holds about 1,000 BTU per cubic foot. So propane packs more energy in less volume.
Storage sets the two apart too. Natural gas needs no tank and no fuel on hand. Propane needs tank space, but it stores for years without going bad.
| Factor | Natural Gas | Propane |
|---|---|---|
| Fuel delivery | Piped in, continuous | Stored in a tank you refill |
| Energy density | ~1,000 BTU/cu ft | ~2,500 BTU/cu ft |
| Storage | No tank needed | Tank required |
| Shelf life | No fuel stored | Stores for years |
Runtime is often the reason you buy a generator. The two fuels handle it in different ways.
A natural gas unit runs as long as the utility line supplies gas. There is no tank to empty and nothing to refill. This makes it a hands-off choice during a long outage.
A propane unit runs until the tank runs low. Tank size sets the limit, and homes often use 250 to 1,000 gallons. A larger tank means more days of backup power.
Each fuel has a trade-off during a storm:
We help homeowners size a propane tank to match their outage risk.
Fuel type also affects how much power your generator makes. This part often gets missed.
Most standby units carry two output ratings. One rating is for propane, and a lower one is for natural gas. This drop on natural gas is called a derate.
The reason ties back to energy density. Propane holds more energy per unit, so it can make slightly more power. Natural gas makes a bit less from the same engine.
This gap matters when you size a unit for big loads. Your AC and heat pull a lot of power in Texas. Some newer units narrow the gap with fuel-smart technology. A licensed electrician sizes the unit around your real power needs.
Cost often comes down to what your home already has. The two fuels start from different places here.
Natural gas is cheaper to install if a gas line already serves your home. The unit ties into that line, so setup is simpler. Without a gas line, a utility connection can cost thousands.
Propane may win on upfront cost when there is no gas line. But it needs a tank, placed to code with proper setbacks and anchoring. That tank install adds to the total.
Fuel cost differs too. The U.S. Energy Information Administration tracks natural gas and propane pricing and consistently shows natural gas running cheaper per unit in most U.S. markets. Propane delivery and refills add some cost over time. Check what your home already has before you compare the two.
Not sure which way to go? See our McKinney electrical services.
The right fuel comes down to your home and what it already has. A simple rule points most homeowners the right way.
Have a gas line? Natural gas usually wins for its steady, hands-off supply. No gas line? Propane is often the practical choice for whole-home backup.
Your neighborhood plays a part too. Many newer McKinney developments already have gas service. Some rural lots and older properties do not.
A few things can steer your choice:
This choice looks the same across McKinney, Allen, Prosper, and Melissa. One McKinney homeowner had no gas line on a rural lot. They chose propane and now keep days of backup power on hand.
The right fuel depends on your home, not a one-size answer. A quick look at your setup points you the right way. We check your gas access, your space, and your outage needs.
A licensed electrician then sizes the unit for your home. Correct sizing keeps your AC, heat, and key circuits running during an outage. This step protects both your home and your investment.
We install and service both natural gas and propane setups across McKinney. Bringing 80 years of Baker Brothers expertise to McKinney, we match the right fuel and unit to your home. Our team handles the fuel connection, the transfer switch, and the testing. We offer same-day or next-day service in most cases.
Ready to pick the right fuel for your home? Call our McKinney team at (469) 398-3229 to schedule your generator consultation.
The better fuel depends on whether your home has a gas line. Natural gas usually wins when a line already serves your home. Propane is often the best pick when there is no gas line. Your space and outage needs also help decide.
Yes, a generator usually makes slightly more power on propane than natural gas. Propane holds more energy per unit, so it drives a bit more output. Most standby units list two ratings, one per fuel. This gap matters when sizing for big loads like AC.
A propane standby generator runs until the tank runs low. Tank size sets the limit, and homes often use 250 to 1,000 gallons. A larger tank means more days of backup power. You can also fill the tank before a storm hits.
Natural gas is often cheaper per unit of fuel than propane. It also costs less to install when a gas line already serves your home. Propane can win on upfront cost when there is no gas line. Refills and delivery add to propane's long-term cost.
Yes, many standby generators are dual-fuel and run on either natural gas or propane. This lets you pick the fuel that fits your home. A licensed electrician sets up the unit for your chosen fuel. Dual-fuel models add flexibility if your setup changes later.
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