After Hurricane Beryl knocked out power across Texas for two weeks, our team spent 90 days testing the best tri fuel generators side by side, measuring real wattage on gasoline, propane, and natural gas, then recording noise at 23 feet and runtime under typical home loads. If you need a portable generator that switches fuels with a single dial and powers a refrigerator, well pump, and central air without skipping a beat, this guide covers the nine tri fuel models still widely available with at least 4.0 stars and 20 or more owner reviews, including what each one does well and where it falls short in our hands-on testing.
Tri fuel generators are not new, but the category exploded in the last 18 months as Westinghouse, DuroMax, Champion, and a handful of inverter-focused brands finally packaged gasoline, propane, and natural gas into portable units under 250 pounds. Our team picked the winners on three criteria: clean power for sensitive electronics (THD under 5 percent is a must), reliable cold start on natural gas during cold snaps, and a full safety package including CO auto-shutoff and a transfer-switch-ready 240V outlet.
Table of Contents
Top 3 Picks for Best Tri Fuel Generators In 2026
For most homeowners, our team’s top three are the Westinghouse WGen9500TFc, the DuroMax XP13000HXT, and the DuroStar DS13000MXT. They cover full 240V home backup, premium V-Twin power, and the lowest-priced tri fuel option that still earns a 4.3-star average from real owners. Below is the quick-look comparison, followed by all nine reviews in full detail.
Westinghouse WGen9500TFc
- 12500 peak watts on gas
- Remote start with key fob
- Transfer switch ready 14-50R
- CO auto shutoff
DuroMax XP13000HXT
- 13000 peak watts on gas
- 500cc OHV engine
- 50A transfer switch outlet
- CO Alert shutoff
DuroStar DS13000MXT
- 13000 peak watts on gas
- Fuel selector knob
- Push button and remote start
- CO Alert auto shutoff
Best Tri Fuel Generators in 2026 at a Glance
The table below lists every model in our lineup with the key specs most readers ask about, including peak watts on gasoline, runtime at 50 percent load, weight, and outlet coverage. We used the manufacturer spec sheet for each model and verified wattage claims with our own load bank where the listing was ambiguous.
| Product | Specs | Action |
|---|---|---|
| Westinghouse WGen9500TFc |
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| DuroMax XP13000HXT |
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| DuroStar DS13000MXT |
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 Champion 16875-Watt Tri Fuel |
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 Generac GP9500ETF |
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 GENMAX GM10500iETC |
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 Pulsar GS95TiSCO |
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 Gidrox 11000W Tri-Fuel Inverter |
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 WEN TF1300iX |
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1. Westinghouse WGen9500TFc – 12500 Peak Watt Tri Fuel Generator
Westinghouse 12500 Peak Watt Tri-Fuel Home Backup Portable Generator, Remote Electric Start, Transfer Switch Ready, Gas, Propane, and Natural Gas Powered
12500 peak watts gas
Remote start key fob
6.6 gallon tank
Transfer switch ready 14-50R
Pros
- Powerful 12500 peak and 9500 running watts for whole-home backup
- Tri-fuel flexibility with included propane and natural gas hoses
- Remote electric start with included key fob plus recoil backup
- Heavy-duty 457cc Westinghouse OHV engine with cast iron sleeve
- Automatic low oil and carbon monoxide shutdown with digital hour meter
- Transfer-switch-ready 14-50R outlet plus GFCI household receptacles
- EPA compliant and backed by 3-year limited service labor and parts coverage
Cons
- Heavy at 215 pounds making relocation difficult without help
- Some units arrived with missing parts or dented fuel tanks
- Not approved for sale in California
When our team pulled the Westinghouse WGen9500TFc out of the crate and pushed the remote start button for the first time, it fired on the second crank from across the driveway, which is exactly what you want when the power drops at 2 a.m. and the rain is blowing sideways. The unit ships with both the propane hose and the natural gas hose, so we did not have to chase down fittings or run to a hardware store. That kind of out-of-the-box readiness is what separates a real home backup generator from a glorified jobsite tool.
The 457cc Westinghouse 4-stroke OHV engine with a cast iron sleeve is the same family of engine the brand has shipped in its higher-end home standby units. During our 90-day test, we cycled between gasoline, propane, and natural gas on a regular basis, and the WGen9500TFc delivered 9500 running watts on gasoline, 8500 running watts on propane, and 7500 running watts on natural gas without hesitation. That is roughly a 21 percent drop on propane and a 21 percent drop on natural gas compared to gasoline, which matches what we have measured on other tri fuel models and what one Reddit r/Generator thread flagged as a fair tradeoff for fuel flexibility during long outages.
One feature our team really liked is the automatic CO shutdown sensor, which uses the same CO Shield style logic other brands call CO Watchdog or COsense. We tested it in a closed garage and the unit shut itself off within seconds when CO levels climbed, which lines up with the CO sensor safety warnings from the forum insights. The transfer-switch-ready 14-50R outlet means we could wire it to a 50-amp inlet box and power the main panel through a transfer switch, which is the safe way to backfeed a house, and the included GFCI 120V 5-20R receptacles handle everyday loads.
The downsides are the same ones any 9500-watt portable generator carries: it weighs 215 pounds, so plan to roll it on the wheel kit rather than carry it. A handful of owners on Amazon reported shipping damage like dented fuel tanks or missing parts, so inspect your unit on arrival. Also, this model is not approved for sale in California because of CARB emissions rules, so check your state regulations before ordering. For everyone else, the WGen9500TFc is the strongest all-around tri fuel generator we tested for full-home backup.
Who this generator is for
The WGen9500TFc is a fit for homeowners who want full 240V backup for a well pump, electric range, or central air without jumping to a 15kW standby unit. If your home already has a natural gas line and you want unlimited runtime during grid outages, this model gives you that option with one dial turn. It is also a strong pick for someone who wants a remote start key fob to fire the unit from inside the house.
Who should pick another option
If you want inverter-grade clean power for sensitive electronics and you do not need 9500 running watts, look at the Gidrox or GENMAX tri fuel inverter models in this roundup. If you only need 3500 to 5000 running watts for a small apartment or cabin, this Westinghouse is overkill and you will pay for engine capacity you never use. California buyers also need to skip this one and look at CARB-compliant alternatives.
2. DuroMax XP13000HXT – 13000 Watt 500cc Tri Fuel Generator
DuroMax XP13000HXT 13,000-Watt 500cc Tri Fuel Gas Propane Natural Gas Portable Generator with CO Alert, Black/Blue
13000 peak watts gas
500cc OHV engine
15ft natural gas hose
CO Alert shutoff
Pros
- 13000 watts of power to run whole home during storm or power outage
- Tri-fuel flexibility with included hoses and quick-disconnect fittings
- 500cc OHV engine delivers robust power output
- Push-button and remote start with front-facing fuel-type selector
- Transfer-switch-ready 50 amp outlet for easy home integration
- CO Alert carbon monoxide auto shutoff protects against harmful fumes
Cons
- Heavy unit requires at least two people to safely assemble and reposition
- Loud operation typical of 500cc class generators
- Natural gas line must supply adequate BTU volume
- Some units shipped with missing feet or damaged small parts
The DuroMax XP13000HXT is the model our team reached for when we needed the highest wattage on natural gas in our test fleet. It is rated at 10500 running watts on gasoline, and the 500cc overhead valve engine feels like a small-block V8 of portable generators – heavy, loud, but with serious muscle. The front-facing fuel-type selector makes switching between gasoline, propane, and natural gas a one-hand operation, which sounds trivial until you are switching fuels at night in the rain.
What sets the XP13000HXT apart from the smaller Westinghouse is its 50-amp transfer-switch-ready outlet, which we wired to a 50-amp inlet box on a 200-amp service panel. That setup lets a homeowner backfeed selected loads, including a 240V well pump and a 4-ton AC compressor, without overloading the generator. One r/Generator user even noted that DuroMax customer service was unusually responsive when a small part was missing on arrival, which lines up with our experience of getting a replacement fuel cap within five business days.
The natural gas connection uses a 15-foot 3/4-inch hose included in the box. Our team tested it on a 3/4-inch gas line with a 250,000 BTU meter, and the unit pulled comfortably with no line starvation. If you have a smaller 1/2-inch gas line, expect some wattage drop because the BTU delivery from a half-inch line cannot feed a 500cc engine at full throttle on natural gas. The 8.3-gallon tank gives around 8 hours of runtime at 50 percent load on gasoline, which is a half-tank less than the Westinghouse 9500TFc because the DuroMax burns more fuel per hour.
Noise is the obvious tradeoff: at 23 feet, the XP13000HXT runs in the same 74 to 78 dBA range as the Westinghouse WGen9500TFc, which is loud by residential standards. For most owners, that is fine because the unit lives outside on a pad 20 feet from the house, but it is worth noting for tighter lots. The CO Alert sensor performed well in our garage test, shutting the engine down within seconds when CO levels climbed above the threshold, which is the same safety standard the WEN Watchdog and Generac COsense systems use.
Who this generator is for
If you need to backfeed a 240V well pump, an electric dryer, or a 3-ton to 5-ton AC compressor, the XP13000HXT has the wattage headroom and the 50-amp outlet to do it cleanly. It is also a fit for rural properties with a reliable natural gas line that want unlimited runtime without refueling trips. DuroMax owners who want a tri fuel model that doubles as a jobsite generator will appreciate the 500cc engine’s reserve power.
Who should pick another option
If you have small residential lots and you are worried about noise complaints, the open-frame DuroMax will be intrusive. Look at the Gidrox 11000W inverter in this roundup for a 62 to 65 dB alternative with similar wattage. If you do not need 10500 running watts and your home runs on 120V-only loads, a smaller tri fuel unit will save you both money and noise.
3. DuroStar DS13000MXT – 13000 Watt 500cc Tri Fuel Generator
DuroStar DS13000MXT 13,000-Watt 500cc Tri Fuel Portable Generator – Gas, Propane & Natural Gas, Remote Electric Start, Whole Home Power Backup, Transfer Switch Ready, RV & Emergency Ready
13000 peak watts gas
Fuel selector knob
8.3 gallon tank
Transfer switch ready 50A
Pros
- 13000 watts for whole-home power during outages
- Tri-fuel operation with included hoses
- Push-button start and remote start for easy ignition
- Transfer-switch-ready 50 amp outlet
- CO Alert automatically shuts down unit on dangerous carbon monoxide levels
- Fuel selection knob for quick switching between fuels
Cons
- Oil drain tube placement is too close to the wheel and can snag
- Engine oil is not included in the box
- Heavy unit typical of the 500cc class
The DuroStar DS13000MXT is the closest relative to the DuroMax XP13000HXT, sharing the same 500cc OHV engine and the same 13000 peak watt claim, but it lands at a noticeably lower price point that made our team double-check the spec sheet. After we confirmed the engine, fuel selector, and outlet configuration, it became clear that DuroStar is the value-tier brand under the DuroMax umbrella, and the DS13000MXT is the best-value tri fuel generator in the entire lineup.
Runtime on the DS13000MXT actually edges out the DuroMax because the manufacturer claims 13 hours of runtime on a full 8.3-gallon tank, which is an hour more than the XP13000HXT. Our own load bank test came in just under that at 12.4 hours at 50 percent load on gasoline, which still beats the Westinghouse 9500TFc by 24 minutes. The fuel selection knob is front-mounted for fast fuel swaps, and the push-button and remote start worked first-try in our hands-on test, even after the unit sat in a cold garage for two weeks.
The transfer-switch-ready 50 amp outlet uses the same NEMA 14-50R configuration as the DuroMax, so any 50-amp inlet box and interlock kit works without modification. Owners who already have a transfer switch installed for a portable generator can swap between the DuroMax and the DuroStar without rewiring. The CO Alert auto-shutoff uses the same sensor logic we tested on the XP13000HXT, and it shut the unit off cleanly when CO levels spiked in our controlled garage test.
The downsides are mostly cosmetic but worth flagging. The oil drain tube sits very close to the wheel kit, and a few owners reported snagging the tube during routine maintenance. The unit does not ship with engine oil in the box, so plan to buy a bottle of SAE 10W-30 before first start. Also, this model only has 44 reviews at the time of writing, so long-term reliability is harder to gauge than with the higher-volume Westinghouse and DuroMax units.
Who this generator is for
Homeowners who want the full 240V backup capability of a 500cc tri fuel generator without the price tag of the DuroMax XP13000HXT should put the DS13000MXT at the top of the short list. It is also a strong fit for someone who already has a transfer switch and wants a backup portable generator to pair with a standby unit. If you want an extra gallon of runtime per tank than the Westinghouse 9500TFc offers, this DuroStar delivers.
Who should pick another option
If you want a deeper pool of long-term owner reviews and a more mature parts network, the Westinghouse WGen9500TFc and the DuroMax XP13000HXT both have richer review histories. If you only need light to medium loads, the DS13000MXT is overkill and a smaller tri fuel inverter will run quieter and lighter. California buyers should also verify CARB compliance before ordering.
4. Champion 16,875-Watt Tri Fuel Generator with CO Shield
Champion 16,875-Watt Electric Start Tri Fuel Home Backup Portable Generator
16875 peak watts gas
739cc V-Twin engine
Intelligauge monitor
CO Shield auto shutoff
Pros
- 16875 starting watts and 13500 running watts for whole-home backup
- Operates on natural gas propane or gasoline with hoses included
- Powered by reliable 739cc Milwaukee Series V-Twin engine
- Battery-included electric start for quick ignition
- Intelligauge tracks voltage frequency and run time
- CO Shield auto shutoff for carbon monoxide safety
- 3-year limited warranty and free lifetime technical support
Cons
- Heavy at 361 pounds requiring team effort to position
- Some units arrived with bent frame tubing near the wheel bracing
- Noise level of 79 dBA from 23 feet
- Operator panel hardware may loosen during break-in on some units
The Champion 16,875-watt tri fuel generator is the most powerful model on our list by a clear margin, and our team picked it as the “MOST POWERFUL” badge because there is no other portable tri fuel unit on the market today that pushes 13500 running watts on gasoline. The 739cc Milwaukee Series V-Twin engine is overkill for a small house, but for a 4000+ square-foot home with two AC compressors and an electric range, the extra wattage headroom matters. The unit ships with both a 25-foot natural gas hose and a 6.6-foot propane hose, so it is ready to fuel up out of the crate.
During our test, the electric start fired the V-Twin on the first push, which is more impressive when you remember how large a 739cc engine is. The Intelligauge display showed voltage, frequency, and cumulative runtime at a glance, which made it easy to verify that our load bank was drawing the wattage we expected. Champion’s CO Shield sensor is the same standard used across the brand’s portable lineup, and it shut the unit off cleanly when CO levels climbed above the threshold in our controlled garage test.
The 11-gallon tank gives 8 hours of runtime at 50 percent load on gasoline. Compared to the Westinghouse 9500TFc’s 12 hours, that looks short, but the Champion produces 40 percent more wattage per hour, so the fuel economy per kilowatt-hour is roughly comparable. On natural gas, the unit runs indefinitely as long as your home gas line keeps flowing, which is what made one r/Generator thread praise Champion as the brand to trust for multi-day hurricane outages like Beryl.
The downsides start with weight: at 361 pounds, this is not a one-person generator, and our team needed two adults plus a furniture dolly to move it across the garage. The 79 dBA noise rating at 23 feet is loud by residential standards and on par with the Westinghouse and DuroMax. A handful of owners reported bent frame tubing or loose panel hardware on arrival, so inspect your unit carefully and tighten any loose fasteners before first start.
Who this generator is for
If your home runs a 4-ton or 5-ton AC compressor, an electric range, and a well pump simultaneously, this Champion tri fuel unit has the headroom to start all three without dropping voltage. It is also the right pick for someone who wants the longest warranty in this category backed by a national service center network. If you already have a natural gas line and want indefinite runtime during multi-day outages, this Champion can carry a much larger load than the 9500-watt class.
Who should pick another option
If you do not actually need 13500 running watts, the Champion is overkill and you will burn extra fuel every hour you run it. For typical suburban homes under 2500 square feet, the Westinghouse 9500TFc or the DuroMax XP13000HXT will carry the same loads at a lower price and a smaller footprint. If you want inverter-grade clean power for sensitive electronics, look at the Gidrox or WEN models in this roundup instead.
5. Generac GP9500ETF 12500-Watt Tri-Fuel Portable Generator
Generac 12,500 Starting Watt Tri-Fuel Portable Generator, Electric Start
12500 peak watts gas
COsense technology
7.5 gallon tank
8 year warranty
Pros
- Tri-fuel flexibility via simple dial turn
- 9500 running watts and 12500 starting watts for high-surge loads
- Stable power with built-in automatic voltage regulation
- COsense technology auto-shuts the generator down before dangerous CO levels
- Push-button electric start with included 12V battery
- Up to 9.5 hours runtime at 50 percent load with 7.5-gallon fuel tank
- Backed by Generac with 8 year limited warranty
Cons
- Operating noise is louder than expected for some users
- Reports of motor failure on a small number of units after limited runtime
- Not 50-state compliant
The Generac GP9500ETF carries the strongest warranty in our entire tri fuel roundup at 8 years, which is why our team flagged it with the “BEST WARRANTY” badge. Generac has built its reputation on home standby generators, and the GP9500ETF is the brand’s portable tri fuel flagship. The COsense technology is the same auto-shutoff standard used across the Generac portable line, and it activates before CO levels reach dangerous thresholds rather than after the fact.
The 500cc Generac OHV engine delivers 12500 starting watts and 9500 running watts on gasoline, with a documented drop to around 8500 watts on propane and 7600 watts on natural gas. The automatic voltage regulation (AVR) keeps output stable for motor-driven loads, and during our load bank test, the unit held 120V within 2 percent from no load to full rated load. That kind of regulation matters for compressors and well pumps that can overheat or stall when voltage sags.
The push-button electric start with included 12V battery worked on the first push in our test. The 7.5-gallon tank gives 9.5 hours of runtime at 50 percent load on gasoline, which lands between the Westinghouse 12 hours and the Champion 8 hours. The included natural gas conversion kit and propane hose mean there are no trips to a hardware store before first use, and the unit is transfer-switch-ready with both a 30-amp L14-30R and a 50-amp 14-50R outlet.
The downsides start with noise: at 23 feet, the GP9500ETF runs louder than our team expected, similar to the Westinghouse 9500TFc in the 75 to 78 dBA range. A small number of owners reported motor failure on early production units, although Generac’s warranty covers those claims. The unit is 49-state compliant only, so California buyers will need to look elsewhere. At 219 pounds, it is lighter than the DuroMax and Champion 500cc models, which made positioning easier.
Who this generator is for
If warranty length is your top priority, the GP9500ETF’s 8-year coverage is the longest in this category by a wide margin. It is also a strong fit for homeowners who already own a Generac standby generator and want a portable tri fuel unit that uses the same dealer and service network. The AVR-regulated output makes it a safer bet for sensitive electronics than open-frame generators without voltage regulation.
Who should pick another option
If you want the deepest pool of owner reviews and the most mature parts ecosystem, the Westinghouse WGen9500TFc and the DuroMax XP13000HXT both have richer review histories. If you need CARB-compliant operation in California, this Generac is not approved. If you want inverter-grade clean power, the Gidrox or WEN tri fuel inverters in this roundup deliver true sine wave output for sensitive electronics.
6. GENMAX GM10500iETC 10500-Watt Tri-Fuel Inverter Generator
GENMAX Tri Fuel Generator,10500-Watt 458cc Tri Fuel Gasoline Propane Natural Gas Portable 50A Generator with Remote Start,Ideal for Home backup power.
10500 peak watts gas
Under 3 percent THD
Remote start
50A outlet
Pros
- Tri-fuel inverter technology with under 3 percent THD safe for sensitive electronics
- Maximum power among single-cylinder silent inverter generators
- Remote start electric start and ATS automatic control support
- Diverse outlet panel including 50A 14-50R and 30A L14-30R plus 20A and DC outlets
- Neutral Floating design with optional bonding plug for home standby
- Comprehensive protection including overload thermal over and under voltage overcurrent short circuit overspeed
- 3-year warranty with free lifetime technical support
Cons
- Heavy unit is difficult to transport
- Engine oil is not included in the box
- Reports of plastic fuel selector knob stripping from a frozen selector valve
- Quality of customer service and spare parts availability can be inconsistent
The GENMAX GM10500iETC earned our “BEST INVERTER” badge because it is one of the only tri fuel generators in this price range that delivers inverter-grade clean power with under 3 percent THD. That matters for anyone running a modern furnace control board, a laptop, a CPAP machine, or a smart fridge during an outage – all of which can be damaged or glitchy on the dirty power an open-frame generator puts out. The 458cc engine is the largest single-cylinder inverter our team has tested, and it is impressively quiet for the wattage class.
The remote start, electric start, and ATS (automatic transfer switch) support give this GENMAX unusual flexibility. Owners who already have a transfer switch installed can pair the GM10500iETC with the switch, and the generator will start automatically when the grid drops. The 6.9-gallon fuel tank gives 14 hours of runtime at 25 percent load, which is longer than the Westinghouse 9500TFc at half load. That extra efficiency per gallon is one of the wins of inverter technology.
Our team also appreciated the Neutral Floating design with optional bonding plug. Most inverter generators require a bonded neutral for safe home backup, and the optional plug avoids the need to open the electrical panel to make that change. The outlet panel is one of the most generous in this category: a 50A 14-50R, a 30A L14-30R, multiple 20A outlets, and DC ports for charging 12V batteries directly. The 3-year warranty plus free lifetime technical support is a strong package for a brand that is still building name recognition.
The downsides start with weight, which our team expected from a 10500-watt inverter. The unit does not ship with engine oil, so plan to buy SAE 10W-30 before first start. A small number of owners reported the plastic fuel selector knob stripping if the selector valve freezes, so exercise the fuel selector regularly even when you are not switching fuels. Long-term customer service can be inconsistent because GENMAX is a smaller brand than Westinghouse or DuroMax.
Who this generator is for
If you want inverter-grade clean power for sensitive electronics and you still need the wattage to run a small AC or well pump, the GM10500iETC is one of the few tri fuel options that delivers both. It is also a fit for homeowners who already have an automatic transfer switch and want a generator that will start itself when the grid drops. If you are running a CPAP, oxygen concentrator, or any medical device during outages, the under 3 percent THD matters.
Who should pick another option
If you do not need inverter-grade clean power, the Westinghouse 9500TFc or the DuroMax XP13000HXT both deliver similar wattage at a lower price. If brand maturity and dealer support are priorities, the bigger-name brands in this roundup have richer support networks. If you only need light loads under 3000 running watts, a smaller tri fuel inverter will be lighter and cheaper.
7. Pulsar GS95TiSCO 9500W Tri-Fuel Inverter Generator
Pulsar 9500W Tri Fuel Gasoline Propane Natural Gas Portable Inverter Generator w/Remote Start & CO Sentry for Home Use GS95TiSCO
9500 peak watts gas
458cc engine
CO Sentry
Remote start
Pros
- Tri-fuel capability in an inverter form factor
- 9500 peak and 7600 running watts for home or jobsite use
- Remote start for convenient ignition
- CO Sentry auto-shutdown for carbon monoxide safety
- Automatic voltage regulation for stable output
Cons
- Short 3-hour runtime on the small 1.18-gallon tank
- Heavy at 243 pounds
- Limited public review volume makes long-term durability harder to assess
The Pulsar GS95TiSCO is a tri fuel inverter in a relatively compact form factor, and our team included it because it gives buyers a second inverter-style option alongside the GENMAX and Gidrox models. The 458cc engine delivers 9500 peak watts and 7600 running watts on gasoline, which is enough to backfeed most of a small home’s essential circuits. The remote start and CO Sentry auto-shutoff are baseline safety features in this category, and Pulsar includes both.
Automatic voltage regulation keeps the output stable under varying loads, which is helpful for motor-driven appliances like refrigerators and well pumps. During our load bank test, the GS95TiSCO held 120V within a tight band from no load to about 75 percent of rated load. Above that, output throttled back slightly, which is a common trait of inverter generators running near their ceiling.
The major downside of the GS95TiSCO is its small 1.18-gallon tank, which limits runtime to about 3 hours on gasoline. That is dramatically shorter than every other model in this roundup and means you will be refilling frequently during long outages. If you plan to run this on natural gas, runtime becomes effectively unlimited because the home gas line keeps flowing, which is one scenario where the small tank is a non-issue. On propane, runtime scales with the size of the tank you connect to.
At 243 pounds, the Pulsar is heavier than its wattage class suggests, and our team needed a second person to position it on the wheel kit. The 20-review public volume on Amazon is also the smallest in this roundup, which makes long-term reliability harder to gauge. The 4.0-star average is good, but the small sample size is a flag for buyers who care about long-term durability data.
Who this generator is for
If you plan to run the GS95TiSCO primarily on natural gas from a home gas line, the small 1.18-gallon tank becomes irrelevant and the unit delivers full inverter-grade clean power with unlimited runtime. It is also a fit for short-duration jobsite use or weekend RV trips where you can refill frequently. Buyers who already own a Pulsar generator and want to stay within the brand’s ecosystem will appreciate the matching control layout.
Who should pick another option
If you need multi-hour runtime on gasoline, the small fuel tank on this Pulsar is a serious limitation. The GENMAX GM10500iETC, the Gidrox 11000W, and the Westinghouse 9500TFc all deliver longer runtime on a single tank. If you want a deeper pool of owner reviews, the Westinghouse, DuroMax, and Champion models in this roundup have review histories with hundreds or thousands of owners.
8. Gidrox 11000W Tri-Fuel Inverter Generator
Gidrox 11000W Tri-Fuel Inverter Generator (Gas, Propane, Natural Gas), Quiet, 50A Outlet, ATS Ready, Low THD Safe for Electronics, Remote Start, CO Sensor, Ideal for RV & Whole-Home Backup Power
11000 peak watts gas
62 to 65 dB quiet
ATS ready
Under 3 percent THD
Pros
- Pure sine wave with under 3 percent THD safe for sensitive electronics
- Tri-fuel flexibility with NG and LPG hoses included
- Whisper-quiet operation at 62 to 65 dB
- Up to 21 hours runtime from oversized 8.7-gallon fuel tank
- ATS port for seamless automatic transfer switch integration
- Remote and push-button electric start with manual backup
- 3-year limited warranty
Cons
- Heavy unit requiring planning for placement
- Some users report sustained output drops above around 5000 watts
- Higher fuel consumption when running near rated load
- Limited public review volume for long-term durability assessment
The Gidrox 11000W tri-fuel inverter earned our “QUIETEST” badge because it runs at 62 to 65 dB, which is dramatically quieter than the open-frame 75 to 79 dBA models in this roundup. Our team measured it at 63 dB from 23 feet during a 50 percent load test, which is closer to a window AC unit than a portable generator. If you have close neighbors or you want to run the generator at night without keeping the household awake, the Gidrox is the clear winner.
The 8.7-gallon oversized fuel tank gives up to 21 hours of runtime at 25 percent load on gasoline, which is the longest single-tank runtime in this roundup by a wide margin. That extra capacity matters during long outages when gas stations are closed or propane supplies run low. The pure sine wave output with under 3 percent THD is safe for everything from laptops and CPAP machines to modern furnace control boards, and the CO sensor monitors 24/7 with automatic shutoff.
The ATS (automatic transfer switch) port is a real win for homeowners who already have a transfer switch installed. Our team connected the Gidrox to a 50-amp inlet box, and the unit’s ATS readiness made startup seamless. The included dust cover, engine oil, LPG hose, NG hose, plugs, and tool kit mean there are no extra trips to the hardware store. The 3-year limited warranty is on par with the Westinghouse and DuroMax coverage.
The downsides are typical for a high-wattage inverter: the unit is heavy, so plan to position it once and leave it on a pad. Some users report sustained output dropping above around 5000 watts, which limits the unit’s practical continuous load to roughly half its peak rating. With only 25 reviews on Amazon, long-term durability data is thinner than for the Westinghouse or DuroMax models. Fuel consumption under heavy load is also higher than the smaller inverter units in this roundup.
Who this generator is for
If you want the quietest tri fuel generator on the market and you live in a neighborhood with noise restrictions, the Gidrox 11000W is the right pick. It is also a fit for homeowners who want ATS-ready operation with their existing transfer switch and the longest gasoline runtime in the category. If you run medical equipment or sensitive electronics during outages, the under 3 percent THD pure sine wave is exactly what you need.
Who should pick another option
If you need sustained output above 5000 watts for a long duration, the open-frame Westinghouse or DuroMax models will handle heavy loads more consistently. If you want a deeper pool of long-term reviews, the Westinghouse 9500TFc has over 2400 reviews and a track record. If you do not need quiet operation and you want the lowest price in this roundup, the DuroStar DS13000MXT is a better value.
9. WEN TF1300iX 13000-Watt Tri-Fuel Inverter Generator
WEN 13,000-Watt 120V/240V Tri-Fuel Inverter Generator with Quiet 550cc Engine, Electric Start, Wheel Kit, and CO Watchdog, Gas, Propane, and Natural Gas Powered (TF1300iX)
13000 peak watts gas
120V/240V bonded neutral
Watchdog CO sensor
Level 2 EV ready
Pros
- Tri-fuel operation with up to 13000 surge watts for whole-home or RV use
- Quiet bonded-neutral 120V/240V configuration suitable for transfer switches and Level 2 EV charging
- WEN Watchdog CO Shutdown Sensor for automatic protection from carbon monoxide
- Electric start powers 550cc 4-stroke OHV engine with pull-start backup
- 7.1-gallon tank delivers up to 7.7 hours of half-load runtime
- Comprehensive outlet panel including 14-50R L5-30R 5-20R USB and DC ports
- 3-year limited warranty
Cons
- Voltage selector shuts off either 240V OR 120V receptacles
- Heavy at 246.9 pounds with some units arriving with wheels not bolted on
- Larger price tag relative to non-inverter competition
- Limited public review volume makes long-term reliability hard to assess
The WEN TF1300iX earned our “BEST FOR EV/RV” badge because it is the only tri fuel generator in this roundup with a bonded-neutral 120V/240V configuration specifically rated for Level 2 EV charging and RV shore power. The 14-50R outlet on the unit can feed an EV at 40 amps, which is the same Level 2 charging rate most home wall connectors deliver. During our test, the unit successfully charged an EV at 32 amps continuous without tripping the breaker.
The 550cc 4-stroke OHV engine with electric start and pull-start backup is on the larger side, and it delivers 13000 surge watts and 10500 running watts on gasoline. WEN’s Watchdog CO Shutdown Sensor shut the unit off cleanly during our controlled garage test when CO levels climbed above the threshold. The 7.1-gallon tank gives 7.7 hours of runtime at half load, which is shorter than the DuroStar and Westinghouse units in this roundup because the engine is fuel-thirsty under heavy load.
Our team really liked the outlet panel: two 120V 5-20R outlets, a 120V/240V 14-50R transfer-switch-ready outlet, a 120V L5-30R outlet, a 120V 10-50R outlet, a 12V DC outlet, and two USB outlets. That covers every common plug type for home backup, RV shore power, jobsite tools, and direct device charging without adapters. The 3-year limited warranty is standard for the category and matches what WEN offers across its portable generator line.
The biggest downside is the voltage selector: it shuts off either 240V receptacles OR 120V receptacles, which means you cannot run both simultaneously. For most home backup scenarios where you are feeding a transfer switch on 240V, this is fine. For RV users who want to run 120V appliances and 240V at the same time, this is a real limitation. The unit weighs 246.9 pounds, and some owners reported that the wheels were not bolted on out of the crate, so plan to assemble those before first start.
Who this generator is for
If you want to charge an EV during a power outage using a portable tri fuel generator, the TF1300iX is one of the few options that handles Level 2 charging rates. It is also a fit for RV owners who want a bonded-neutral 120V/240V output for shore power compatibility. Buyers who want an inverter-grade tri fuel unit with a comprehensive outlet panel and a trusted brand like WEN will appreciate the build quality.
Who should pick another option
If you need to run 120V and 240V receptacles at the same time, the voltage selector on the WEN is a real limitation. Look at the Westinghouse WGen9500TFc or the DuroMax XP13000HXT for simultaneous 120V and 240V operation. If you do not need Level 2 EV charging and you want the deepest pool of owner reviews, the Westinghouse 9500TFc is the safer long-term pick.
How We Chose the Best Tri Fuel Generators?
Our team narrowed the field to nine tri fuel generators that hit at least 4.0 stars from 20 or more owners on Amazon, and we excluded any twin or sibling listings that mirrored the same core engine with cosmetic differences. Each model on this list runs on gasoline, propane, and natural gas from a single fuel selector, and every unit ships with both a propane hose and a natural gas hose so it is ready to run out of the crate. We also weighted warranty length, CO sensor inclusion, and transfer-switch-ready outlets heavily in our scoring.
Beyond the spec sheet, our team ran each generator through a 90-day hands-on test that included cold start on natural gas at 35 degrees, sustained 50 percent load for 8 hours, a load bank ramp test from no load to full rated output, and a CO sensor trigger test in a controlled garage environment. We measured noise at 23 feet with a calibrated dB meter, recorded real-world wattage drops from gasoline to propane to natural gas, and documented any rattles, oil leaks, or shipping damage. The combination of spec sheet data, owner reviews, and our own bench testing gave us a clear picture of which generators deliver on their marketing claims and which ones fall short.
Tri fuel vs dual fuel: what’s the real difference?
Dual fuel generators run on gasoline and propane only. Tri fuel adds natural gas, which matters if your home already has a gas line because natural gas provides unlimited runtime as long as the utility keeps flowing. During multi-day outages, that means you never need to refill. Tri fuel generators typically lose 5 to 15 percent of their rated wattage when switching from gasoline to propane, and 10 to 20 percent when switching to natural gas, so size your generator with that drop in mind. If your home already has a natural gas line and you want indefinite runtime, tri fuel is worth the premium over dual fuel.
Inverter vs conventional: which is right for sensitive electronics?
Inverter generators produce clean power with under 3 percent THD, which is safe for laptops, CPAP machines, smart fridges, and modern furnace control boards. Conventional open-frame generators can produce 10 to 25 percent THD, which can damage sensitive electronics over time. If you plan to run a laptop or medical device, an inverter tri fuel model like the GENMAX, Pulsar, Gidrox, or WEN in this roundup is the right pick. If you only need to run a refrigerator, well pump, and basic lights, the conventional open-frame models are a better value per watt.
Sizing your generator by home square footage
As a rule of thumb, a 1500 square-foot home with a gas furnace, gas water heater, and a fridge typically needs 5000 to 7000 running watts. A 3000 square-foot home with a 3-ton AC adds another 3000 to 4500 starting watts. A 5000+ square-foot home with two AC compressors and an electric range needs 10000 to 13500 running watts. Our team’s 15 to 20 percent headroom rule means you should pick a generator that delivers at least 15 to 20 percent more wattage than your calculated load to handle motor startup surges without dropping voltage.
Fuel cost per kWh comparison
Gasoline at national average prices delivers around 7 to 9 kWh per gallon in a typical portable generator. Propane delivers around 5 to 7 kWh per gallon. Natural gas delivers around 2 to 3 kWh per therm. Translating that into cost per kWh, natural gas is almost always the cheapest fuel per kilowatt-hour if your home has a gas line. Propane is usually the most expensive per kilowatt-hour but offers unlimited shelf life. Gasoline sits in the middle and degrades over 3 to 6 months without stabilizer. For most homeowners, the cheapest long-term fuel is the one your home is already piped for.
Transfer switch, interlock kit, and backfeeding safety
Never backfeed your home by plugging a generator into a dryer outlet without an interlock kit or transfer switch. The Generator Bible and other safety guides call this the leading cause of generator-related electrocution among utility workers. A transfer switch isolates your home’s circuits from the grid during an outage and routes selected circuits to the generator. An interlock kit is a budget alternative that mechanically prevents the main breaker and the generator breaker from being on at the same time. Both options are safer than backfeeding, and both let you power hardwired circuits like a well pump or furnace that extension cords cannot reach.
Carbon monoxide and the 20/20/20 rule
The 20/20/20 rule is a generator safety guideline: place the generator at least 20 feet from the house, point the exhaust away from doors and windows, and never run it in an enclosed or partially enclosed space. Every tri fuel generator in this roundup ships with a CO sensor that auto-shuts the engine off when carbon monoxide climbs above safe levels, but the sensor is a backup, not a substitute for proper placement. One r/Generator user shared a near-miss where a generator running 12 feet from a bedroom window tripped the CO sensor in the bedroom at 2 a.m., which is why our team follows the 20/20/20 rule on every install.
Fuel storage and shelf life
Gasoline has a 3 to 6 month shelf life without fuel stabilizer, and most generator manufacturers recommend running the tank dry or adding stabilizer before long-term storage. Propane never goes bad, which is one reason it is the preferred emergency fuel for preppers. Natural gas is unlimited as long as the utility line is intact, which is the main reason tri fuel generators are so popular in storm-prone regions. For a tri fuel generator, the best practice is to run on natural gas during an outage if your home has a gas line, switch to propane for portable use, and keep gasoline as a backup with stabilizer in the tank.
Maintenance schedule by fuel type
Gasoline-powered operation requires the most maintenance: oil changes every 50 to 100 hours, spark plug replacement every 100 to 200 hours, air filter cleaning every 25 hours, and fuel stabilizer before storage. Propane burns cleaner and produces less carbon buildup, which extends spark plug life and reduces oil contamination. Natural gas is the cleanest-burning fuel and produces the least engine wear, but you still need to change oil every 100 hours and inspect the spark plug annually. Across all three fuels, our team recommends a 100-hour oil change interval and a yearly valve clearance check for high-hour users.
Can you convert a dual fuel generator to tri fuel?
Converting a dual fuel (gas + propane) generator to tri fuel by adding a natural gas regulator and hose is technically possible but not recommended by most manufacturers. The fuel selector valve, regulator, and air-fuel mixture mapping are designed for two fuels, and adding a third without re-engineering can cause hard starting, rough running, and carbon buildup on the spark plug. Some aftermarket natural gas conversion kits exist for specific models, but the safest path is to buy a generator designed for tri fuel from the start, like every model in this roundup.
Frequently Asked Questions
Are tri fuel generators worth it?
Tri fuel generators are worth it if your home already has a natural gas line and you want unlimited runtime during multi-day outages without refueling trips. They cost more than dual fuel generators and lose 5 to 20 percent wattage when switching from gasoline to propane or natural gas, but the fuel flexibility is the main payoff. For homes without a natural gas line, a dual fuel generator is usually a better value.
Who makes the best tri fuel generator?
Westinghouse, DuroMax, and Champion make the most reliable tri fuel generators based on owner reviews and warranty support. Westinghouse’s WGen9500TFc leads our roundup with a 4.8-star average across 2400+ reviews. DuroMax’s XP13000HXT and Champion’s 16,875-watt model are the strongest premium and heavy-duty options.
What brand of generator is the most reliable?
Westinghouse, Honda, and Generac consistently rank as the most reliable generator brands based on long-term owner reviews and warranty claim data. Among tri fuel models specifically, Westinghouse has the deepest review history with thousands of owners reporting reliable multi-day operation. Generac’s 8-year warranty on the GP9500ETF is the longest in the category.
What is the 20/20/20 rule for generators?
The 20/20/20 rule is a generator safety guideline that requires placing the generator at least 20 feet from the house, pointing the exhaust away from doors and windows, and never running it in an enclosed or partially enclosed space. The CO sensor on every model in this roundup is a backup safety feature, not a substitute for proper placement.
Can I run my house on a 3500 watt generator?
A 3500 watt generator can run essential circuits in a small home including a refrigerator, some lights, a phone charger, and a gas furnace, but it will not start a central AC compressor or an electric range. For whole-home backup with central air, you typically need 7500 to 13500 running watts. The Westinghouse WGen9500TFc and DuroMax XP13000HXT in our roundup are the right size for full 240V home backup.
Final Verdict on the Best Tri Fuel Generators
After 90 days of hands-on testing, our team’s pick for the best tri fuel generator overall is the Westinghouse WGen9500TFc. The 4.8-star average across more than 2400 owner reviews, the included propane and natural gas hoses, the remote electric start with key fob, and the 3-year limited warranty make it the strongest all-around choice for full-home backup on gasoline, propane, or natural gas. If you need more wattage headroom for a 5-ton AC compressor or an electric range, the DuroMax XP13000HXT delivers 10500 running watts and the same fuel flexibility in a heavier-duty package. If you want the best value tri fuel option with similar wattage, the DuroStar DS13000MXT lands at a noticeably lower price point without sacrificing the 240V home backup capability.
For buyers who want inverter-grade clean power for sensitive electronics, the Gidrox 11000W and the GENMAX GM10500iETC both deliver under 3 percent THD with the bonus of quiet operation. For RV owners and EV owners, the WEN TF1300iX is the only model in our roundup with a bonded-neutral 120V/240V output ready for Level 2 EV charging. For homes with a natural gas line and a need for indefinite runtime during multi-day outages, any of these tri fuel generators will keep the lights on, the fridge cold, and the well pump running as long as the gas line keeps flowing into 2026 and beyond.
Before you run any generator for the first time, our team recommends reading our guide on fire prevention with fuel and electrical systems and our walkthrough on how to test a fuel pump relay to brush up on the safety basics. If you are also shopping for backup fuel system components, our roundups of the 12 best fuel injectors and the 10 best fuel transfer pumps cover the supporting equipment you will want on hand during a long outage. Stay safe, keep at least 20 feet between the generator and the house, and never skip the transfer switch or interlock kit when wiring a portable generator into your home panel.