Generator connected to a gas supply outside a house
25 models analyzed · updated November 2026

Best tri fuel generators

Tri fuel generators add natural gas to gasoline and propane. Connected to your home's gas line by a licensed installer, they can run as long as the utility gas keeps flowing, with no fuel to haul. We ranked every tri fuel model in our catalogue.

The ranking How to choose FAQ
🥈 2nd place Westinghouse WGen10500TFc generator Westinghouse WGen10500TFc 8.2/10 10,500 W · Tri fuel · $1,200–$1,800 🥇 1st place · top pick Westinghouse WGen11500TFc generator Westinghouse WGen11500TFc 8.2/10 11,500 W · Tri fuel · $1,200–$1,800 🥉 3rd place Westinghouse iGen8200TFc inverter generator Westinghouse iGen8200TFc 8.1/10 6,600 W · Tri fuel inverter · $1,200–$1,800
Quick picks
25 generators
8.2 Top pick Westinghouse WGen11500TFc generator Westinghouse · Tri fuel Westinghouse WGen11500TFc 11,500 W 74 dB(A)230 lbCO $1,200–$1,800Read the review → 8.2 Top pick Westinghouse WGen10500TFc generator Westinghouse · Tri fuel Westinghouse WGen10500TFc 10,500 W 74 dB(A)230 lbCO $1,200–$1,800Read the review → 8.1 Tri fuel Westinghouse iGen8200TFc inverter generator Westinghouse · Tri fuel inverter Westinghouse iGen8200TFc 6,600 W 60 dB(A)134 lbCO $1,200–$1,800Read the review → 8.0 Tri fuel Generac GP9500E Tri Fuel (8063, 49ST) generator Generac · Tri fuel Generac GP9500E Tri Fuel (8063, 49ST) 9,500 W 219 lbCO $800–$1,200Read the review → 7.9 Tri fuel Westinghouse iGen12000TFc inverter generator Westinghouse · Tri fuel inverter Westinghouse iGen12000TFc 9,000 W 64 dB(A)191 lbCO $1,800–$2,500Read the review → 7.9 Tri fuel Generac GP9500E Tri Fuel EFI (8061, 50ST) generator Generac · Tri fuel Generac GP9500E Tri Fuel EFI (8061, 50ST) 9,500 W 227 lbCO $1,200–$1,800Read the review → 7.8 Tri fuel Westinghouse WGen9500TFc generator Westinghouse · Tri fuel Westinghouse WGen9500TFc 9,500 W 74 dB(A)215 lbCO $800–$1,200Read the review → 7.8 Tri fuel Westinghouse WGen9500TFc EFI generator Westinghouse · Tri fuel Westinghouse WGen9500TFc EFI 9,500 W 74 dB(A)222 lbCO $1,200–$1,800Read the review → 7.7 Tri fuel Pulsar PGD105TiSCO inverter generator Pulsar · Tri fuel inverter Pulsar PGD105TiSCO 8,500 W 62 dB(A)247 lbCO $1,200–$1,800Read the review → 7.6 Tri fuel GENMAX GM15000ET generator GENMAX · Tri fuel GENMAX GM15000ET 11,000 W 76 dB(A)242 lbCO $1,800–$2,500Read the review → 7.6 Tri fuel Westinghouse WGen14500TFc generator Westinghouse · Tri fuel Westinghouse WGen14500TFc 14,500 W 74 dB(A)348 lbCO Over $2,500Read the review → 7.5 Tri fuel Champion 201423 11,000-Watt Wireless Start Tri Fuel Inverter inverter generator Champion · Tri fuel inverter Champion 201423 11,000-Watt Wireless Start Tri Fuel Inverter 9,000 W 64 dB(A)212 lbCO $1,800–$2,500Read the review → 7.4 Tri fuel AIVOLT VS12000511 11500W Tri-Fuel Inverter inverter generator AIVOLT · Tri fuel inverter AIVOLT VS12000511 11500W Tri-Fuel Inverter 9,200 W 64 dB(A)216 lbCO Over $2,500Read the review → 7.4 Tri fuel GENMAX GM9000iET inverter generator GENMAX · Tri fuel inverter GENMAX GM9000iET 8,000 W 62 dB(A)138 lbCO $1,200–$1,800Read the review → 7.4 Tri fuel GENMAX GM10500XiT inverter generator GENMAX · Tri fuel inverter GENMAX GM10500XiT 7,800 W 74 dB(A)124 lbCO $1,200–$1,800Read the review → 7.4 Tri fuel GENMAX GM17000iETC inverter generator GENMAX · Tri fuel inverter GENMAX GM17000iETC 13,500 W 63 dB(A)313 lbCO Over $2,500Read the review → 7.4 Tri fuel Champion 201169 6500-Watt Electric Start Tri Fuel Generator generator Champion · Tri fuel Champion 201169 6500-Watt Electric Start Tri Fuel Generator 6,500 W 74 dB(A)206 lbCO $800–$1,200Read the review → 7.3 Tri fuel GENMAX GM12500iET inverter generator GENMAX · Tri fuel inverter GENMAX GM12500iET 10,500 W 62 dB(A)252 lbCO Over $2,500Read the review → 7.3 Tri fuel GENMAX GM13500iETC inverter generator GENMAX · Tri fuel inverter GENMAX GM13500iETC 11,500 W 62 dB(A)274 lbCO Over $2,500Read the review → 7.3 Tri fuel DuroMax XP15000HXT generator DuroMax · Tri fuel DuroMax XP15000HXT 12,000 W 78 dB(A)362 lbCO Over $2,500Read the review → 7.2 Tri fuel GENMAX GM10500iETC inverter generator GENMAX · Tri fuel inverter GENMAX GM10500iETC 8,500 W 62 dB(A)247 lbCO $1,800–$2,500Read the review → 7.2 Tri fuel Champion 201223 4000-Watt Electric Start Tri Fuel Generator generator Champion · Tri fuel Champion 201223 4000-Watt Electric Start Tri Fuel Generator 4,000 W 68 dB(A)135 lbCO $500–$800Read the review → 7.0 Tri fuel GENMAX GM8000iETC inverter generator GENMAX · Tri fuel inverter GENMAX GM8000iETC 6,000 W 62 dB(A)145 lbCO $1,200–$1,800Read the review → 6.9 Tri fuel Champion 201241 13,500-Watt Electric Start Tri Fuel Generator generator Champion · Tri fuel Champion 201241 13,500-Watt Electric Start Tri Fuel Generator 13,500 W 79 dB(A)361 lbCO Over $2,500Read the review → 5.8 Tri fuel Anker SOLIX Smart Generator 5500 (Tri-Fuel) inverter generator Anker SOLIX · Tri fuel inverter Anker SOLIX Smart Generator 5500 (Tri-Fuel) 3,600 W 69 dB(A)110 lbCO $1,800–$2,500Read the review →

No generator matches these filters.

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25models compared
9,328 Waverage running watts
100%run on propane too
100%with a CO shutoff
7.5/10average score

How to choose

Natural gas means less power

Natural gas carries less energy than propane: expect roughly 20% less output than on gasoline. We show the ratings for each fuel.

Installation

The natural gas hookup needs a properly sized line, a shutoff and a quick-connect, installed by a licensed professional, with the generator still placed outdoors 20 feet from the house.

Mistakes to avoid

  • Connecting to a natural gas line yourself: leaks and undersized lines are dangerous. Hire a licensed pro.

Frequently asked questions

What is a tri fuel generator?

A portable generator that runs on gasoline, propane or natural gas, usually through a fuel selector and a dedicated natural gas inlet.

Can a portable generator run on natural gas?

Yes, if it is a tri fuel model or fitted with a manufacturer-approved conversion kit, and the gas connection is installed by a licensed professional.

How much power do you lose on natural gas?

Typically 15 to 25% compared with gasoline. A 9,500 W gas rating often becomes 7,500 to 8,000 W on natural gas.

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