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Tri Fuel Generators
Tri Fuel Generators That Run on Gas, Propane, or Natural Gas
A tri fuel generator gives you options most standard units simply can't match. Instead of being locked into a single fuel source, these generators can switch between gasoline, propane, and natural gas depending on what's available and what makes sense for the situation. That flexibility matters most during extended outages, when gas stations run dry, propane tanks empty, or a natural gas line is the only supply that keeps flowing. The primary model we carry in this category is the DuroMax XP13000HXT tri fuel generator, engineered in the USA for buyers who want fuel flexibility without sacrificing output. All Pro Generators has helped homeowners and business owners size and select the right tri-fuel generator since 2018, covering both backup power and continuous, heavy-duty use.
Why Fuel Flexibility Matters During an Outage
The biggest advantage of a tri-fuel generator is that it removes the guesswork from fuel planning. If you're running low on gasoline and the nearest station has a line out the door, you can switch to propane. If your propane tank runs dry mid-storm, natural gas from a home line can keep the unit running without interruption. This kind of flexibility is especially valuable during hurricane season, when fuel shortages and long lines at gas stations are common in the days following a major storm.
Sizing a Tri Fuel Generator for Home or Business Use
Most homeowners looking for whole-home backup should plan for at least 8,000 watts, while job sites typically do well with something closer to 4,000 watts. Because a generator tri fuel unit is often used as a primary backup source rather than an occasional convenience, it's worth sizing up rather than cutting it close, particularly if you expect to add appliances or equipment down the line. Running a unit consistently near its maximum output shortens its usable lifespan and leaves no buffer during peak demand. It's also worth noting that output on natural gas or propane typically runs 10 to 20 percent lower than on gasoline, so a unit rated for 13,000 watts on gas may deliver less once switched to an alternate fuel.
Built for Storm Season and Everyday Reliability
Storms drive the bulk of our sales, and hurricane season between June 1st and November 30th is consistently our busiest stretch for tri fuel generators of every size. Because these units aren't dependent on a single fuel source, they hold up well for buyers who want one generator capable of handling almost any outage scenario, whether that means a quick summer storm or a multi-week recovery period. We ship fast from our USA-based warehouses, and our team has helped thousands of customers choose the right setup since 2018.
Frequently Asked Questions
How does a tri fuel generator actually switch between fuel types?
Most tri fuel units use a selector switch or valve system that lets you manually choose which fuel source the engine draws from, and the switch is typically straightforward enough to operate without any special training. You'll want to fully exhaust or shut off one fuel line before switching to another to avoid running the engine on a mixed or inconsistent supply. Checking your specific model's manual for the exact switching procedure is worthwhile, since the process can vary slightly between manufacturers.
Is a tri fuel generator different from a dual fuel generator, and which one do I actually need?
A dual fuel generator runs on two fuel types, usually gasoline and propane, while a tri fuel generator adds natural gas as a third option, giving you an extra layer of backup if the first two sources run low. If you have a natural gas line at your home or business, a tri fuel unit is generally worth the added cost, since it gives you a virtually unlimited fuel supply as long as the gas line stays active. If you don't have access to natural gas, a dual fuel model may cover your needs just as well at a lower price point.
Will a tri fuel generator be ready in time if I order right before a storm?
Overnight shipping isn't realistic for generators of this size and weight, since most manufacturers don't offer expedited freight and rush shipping costs can run several times the price of the unit itself. The safest approach is ordering as soon as a storm system starts forming in the Atlantic, giving the generator time to arrive, get set up, and be tested on all three fuel types before you actually need it. Waiting until landfall is imminent is one of the most common mistakes we see from first-time buyers during hurricane season.
