Tri fuel generators
Run on gasoline, propane or natural gas. Connect to your home’s gas line and keep the power on through a long outage without refueling.
All models
Help me choose33 models
DuroMax XP28000iHTXP28000iHT 28,000-Watt Tri Fuel Portable Inverter Generator with CO Alert
28,000 W peak$7,999
Whole-home
DuroMax XP17500HXT17,500 Watt Tri Fuel Portable HXT Generator w/ CO Alert
17,500 W peak$2,999
Whole-home
FIRMAN T13071TRI FUEL PORTABLE GENERATOR 16800/13500W ELECTRIC START 120/240V WITH CO ALERT
16,800 W peak | 13,500 W running$4,699.99
Whole-home
DuroMax XP16000iHT16,000 Watt Portable Tri Fuel Inverter Generator - Quiet, Low THD
16,000 W peak$5,299
Whole-home
DuroMax XP15500HXT15,500 Watt Tri Fuel Portable HXT Generator w/ CO Alert
15,500 W peak$2,599
Whole-home
DuroMax XP15000HXT+15,000 Watt Electric Start Tri Fuel EFI Portable Generator
15,000 W peak$3,499
Whole-home
FIRMAN T12071TRI FUEL PORTABLE GENERATOR 15000/12000W ELECTRIC START 120/240V WITH CO ALERT
15,000 W peak | 12,000 W running$3,399.99
Whole-home
WEN TF1500XRWEN TF1500XR 15,000-Watt Weatherproof Portable Generator for Home Backup, 120V/240V, Tri-Fuel with Cyclone Shield Weatherproofing Technology, 550cc En
15,000 W peak$2,599.99
Whole-home
DuroMax XP15000HXT15,000 Watt Electric Start Tri Fuel Portable Generator
15,000 W peak$2,599
WEN TF1450XWEN TF1450X 14,500-Watt 120V/240V Tri-Fuel Generator for Gas, Propane, and Natural Gas, Transfer-Switch Ready with Electric Start, Wheel Kit, and CO W
14,500 W peak$1,199.99
DuroMax XP13500iHT13,500 Watt Portable Tri Fuel Inverter Generator - Quiet, Low THD
13,500 W peak$2,999
DuroMax XP13000HXT13,000 Watt Tri Fuel Portable HXT Generator w/ CO Alert
13,000 W peak$1,499
DuroStar DS13000MXT13,000 Watt Tri Fuel Portable Generator w/ CO Alert
13,000 W peak$999
FIRMAN T09376Tri Fuel Portable Generator 11600/9300W Electric Start 120V/240V with CO alert
11,600 W peak | 9,300 W running$1,699.99
FIRMAN T09371Tri Fuel Portable Generator 11600/9300W Electric Start 120V/240V with Power Cord and CO Alert
11,600 W peak | 9,300 W running$1,599.99
FIRMAN T11671Tri-Fuel Portable Generator 11600/9300W Electric Start CO Alert
11,600 W peak | 9,300 W running$1,499.99
FIRMAN T09275Tri Fuel Portable Generator 11400W Electric Start 120V/240V with CO Alert
11,400 W peak$1,899.99
DuroMax XP11000iHT11,000 Watt Portable Tri Fuel Inverter Generator - Quiet, Low THD
11,000 W peak$2,899
FIRMAN T08072Tri Fuel Portable Generator 10000/8000W Electric Start 120/240V with CO ALERT
10,000 W peak | 8,000 W running$1,799.99
FIRMAN T08073Tri Fuel Portable Generator 10000/8000W Electric Start With CO Alert
10,000 W peak | 8,000 W running$1,499.99
DuroMax XP9500iHT9,500 Watt Portable Tri Fuel Inverter Generator - Quiet, Low THD
9,500 W peak$2,099
FIRMAN T07573Tri Fuel Portable Generator 9400/7500W Electric Start 120/240V with CO Alert
9,400 W peak | 7,500 W running$1,349.99
FIRMAN T08273Tri Fuel Portable Generator 8250/6600W Electric Start Wheel Kit Bonus Cover & Cord CO Alert
8,250 W peak | 6,600 W running$1,379.99
FIRMAN T08071Tri Fuel Portable Generator 8000W Electric Start 120/240V
8,000 W peak$1,399.99
FIRMAN WT06375Tri-Fuel Inverter Portable Generator 7850/6300W Electric Start 120/240V Parallel Ready with CO Alert
7,850 W peak | 6,300 W running$2,299.99
FIRMAN T06373Tri Fuel Portable Generator 7850/6300W Electric Start Gas CO Alert
7,850 W peak | 6,300 W running$1,349.99
FIRMAN WT06073Tri Fuel Inverter Portable Generator 7500/6000W Electric Start 120/240V Parallel Ready CO Alert
7,500 W peak | 6,000 W running$1,999.99
FIRMAN T07571Tri Fuel 7500W Portable Generator Electric Start 120/240V
7,500 W peak$1,299.99
DuroMax XP7000iHT7,000 Watt Portable Tri Fuel Inverter Generator - Quiet, Low THD
7,000 W peak$1,799
FIRMAN WT05571Tri Fuel Inverter Portable Generator 6850W Electric Start With CO Alert
6,850 W peak$2,299.99
FIRMAN T04472Tri Fuel Portable Generator 5500/4400W Electric Start 120 with CO ALERT
5,500 W peak | 4,400 W running$1,029.99
FIRMAN T04073Tri Fuel Portable Generator 5000/4000W Electric Start 120/240V with CO ALERT
5,000 W peak | 4,000 W running$1,099.99
FIRMAN WT03571Tri Fuel Inverter Portable Generator 4400/3500W Electric Start 120V Parallel Ready CO Alert
4,400 W peak | 3,500 W running$1,129.99What is a tri fuel generator and how does it work?
A tri fuel generator has one engine that can burn three fuels. A selector switches between gasoline from the tank, propane from a cylinder, or natural gas from your home’s supply line. The engine turns an alternator that produces 120V and 240V power for your appliances or a transfer switch.
Why choose tri fuel generators from Generator Hubs?
Three fuels, one engine
Switch fuel at a selector when one runs short.
Whole-home output
Models up to 28,000 watts with 240V outlets.
Safety built in
CO alert shutoff and low-oil shutdown on most models.
Manufacturer specs
Every figure comes from the maker’s spec sheet.
Brand-new products
Genuine, unused, in the original packaging.
Your home backup solution
Typical running watts: refrigerator 700 W, sump pump 1,050 W, furnace fan 800 W, well pump 1,000 W, central AC 3,800 W.
DuroMaxXP28000iHT 28,000-Watt Tri Fuel Portable Inverter Generator with CO Alert28,000 W peak
$7,999Learn more
DuroMax17,500 Watt Tri Fuel Portable HXT Generator w/ CO Alert17,500 W peak
$2,999Learn more
FIRMANTRI FUEL PORTABLE GENERATOR 16800/13500W ELECTRIC START 120/240V WITH CO ALERT16,800 W peak | 13,500 W running
$4,699.99Learn moreReliable power for jobsites and RVs
Hear from our customers
Verified customer reviews will appear here.
Collected from real buyers after delivery.
Tri fuel generators brands we carry
DuroMaxDuroStarFIRMANWEN
FAQ
Is a tri fuel generator worth it?
If your home has natural gas, yes for long outages: the generator runs from the gas line instead of a tank you must refill, and you keep gasoline and propane as backups.
Does natural gas reduce output?
Yes. Most generators produce less power on natural gas than on gasoline. Check each model’s natural gas rating before you choose.
How many watts do I need?
Add up the running watts of everything you want to power at the same time, then add about 25% headroom for motors that surge when they start. Essentials usually need 5,000–8,000 W; a whole home with central AC often needs 12,000 W or more.
Can I connect a generator to my house?
Only through a transfer switch or interlock kit installed by a licensed electrician. Never backfeed power through a wall outlet.
Can I run a generator indoors or in a garage?
No. Run fuel-powered generators outdoors, at least 20 feet from doors, windows and vents. CO alert shutoff is a safety backup, not permission to run indoors. Battery power stations can be used indoors.
Which models can ship to California?
Only CARB-compliant models can be sold in California. Each product page says whether a model is CARB compliant.
How are large generators delivered?
Large generators ship by freight. Delivery terms are shown on our shipping page and confirmed before dispatch.
What is your return policy?
You have 30 days from delivery to return unused equipment. Returns are free: we send you a prepaid return label.