DuroMax 13,000 Watt Generators and When to Size Up

Best for
Whole-home dual fuel backup with CO Alert

The DuroMax XP13000HX 13,000-Watt Dual Fuel Portable is what DuroMax calls the crown jewel of its HX Series. It pairs a 500cc OHV engine with all copper windings and runs on gasoline or propane, switching fuels from a front-facing interface. The listing positions it as whole-home backup that can handle lights, appliances and even central A/C, and it adds CO Alert to protect against carbon monoxide.

The power panel is well stocked: four 120V GFCI household outlets, one 120V 30A outlet, one 120/240V 30A twist-lock and a heavy-duty 120/240V 50A outlet that makes it transfer switch ready. Note the listing’s specification block says four total outlets and a 0.5 gallon tank, which does not line up with the outlet list or with a generator this size, so confirm the tank capacity with DuroMax before you plan runtime. The listing also does not state a separate running wattage. For most readers who want a 13,000 watt DuroMax generator on gas and propane with modern safety features, this is the default pick.

• 500cc OHV engine with all copper windings
• Gasoline or propane, switched from the front panel
• CO Alert and digital display
• 120/240V 50A transfer switch-ready outlet

Best for
Rugged all-metal dual fuel workhorse

The DuroMax XP13000EH 13,000-Watt Dual Fuel Portable is the tough-guy version at the same power class. It also uses a 500cc OHV engine on gasoline or propane, but the listing leans hard into build: a heavy-duty all-metal frame and power panel with no plastic parts, 100% copper windings, and no-flat tires. It is also the only 13,000 watt model here that clearly publishes its running output, listed at 10,500 running watts with surge up to 13,000.

Feature extras include an hour meter, low oil shutdown, a CO sensor, a foldable handle and push button start, plus the transfer switch-ready 50A outlet and individual breakers. The listing mentions two 120V GFCI household outlets and lists two total outlets in the specs, so the full panel layout is not clearly spelled out; check the product documents if outlet count matters. The same 0.5 gallon tank figure appears here, which again looks like a data error. Pick the EH if you value the all-metal build and a stated running figure; pick the HX if CO Alert shutdown and a clearly listed outlet panel matter more.

Best for
Homes with a natural gas line

The DuroMax XP13000HXT 13,000-Watt 500cc Tri Fuel adds the third fuel: natural gas. DuroMax says it stands as the largest tri fuel portable generator on the market at launch. If your home has a natural gas line, that option means you are not hauling gas cans or swapping propane tanks during a long outage, which is the single biggest quality-of-life upgrade in this lineup.

It keeps the 500cc OHV engine, CO Alert, front-facing fuel selector and 50A transfer switch-ready outlet, and it adds remote start so you can fire it up from a distance. The listing specifies an 8.3 gallon tank, a digital display and seven total outlets. One quirk: the specification field lists fuel type as gasoline only, while the title, features and description all confirm gasoline, propane and natural gas. Running watts are not specified. This is the 13,000 watt DuroMax to buy if natural gas is on the table and you do not need the jump to 15,000 watts.

• Gasoline, propane or natural gas
• Push button start plus remote start
• CO Alert and digital display
• 8.3 gallon tank listed

Best for
Tri fuel buyers needing more headroom

The DuroMax XP15000HXT 15,000 Watt Tri Fuel is the size-up option for tri fuel buyers. It keeps a 500cc OHV engine according to the listing but is rated at 15,000 watts, and it runs on gasoline, propane or natural gas. The panel is spelled out clearly: four 120V 20A GFCI outlets, one 120V 30A twist-lock, one 120/240V 30A twist-lock and one 120/240V 50A heavy-duty outlet.

Its standout is the computer interface with a large LED display showing gas gauge, load gauge, voltage, frequency and time at a glance, which is genuinely useful when you are balancing loads during an outage. CO Alert shuts the unit down when harmful fumes are detected, and remote start is included. The listing gives a weight of 362 pounds, so plan where it will live. Running watts and tank size are not specified. Choose it over the XP13000HXT when your load list pushes past 13,000 watts or you want the richer display.

Best for
Biggest dual fuel loads and long runs

The DuroMax XP15000HX 15,000-Watt Dual Fuel Portable is the biggest engine in this group, a 670cc OHV unit with all copper windings, which DuroMax describes as the largest single cylinder dual fuel 15,000 watt generator on the market. It runs on gasoline or propane, and the listing specifies a 13.2 gallon tank, the largest here, which is good news for long overnight runs.

The power panel counts five 120V GFCI household outlets in the features list, while the description says ten standard household outlets, alongside a 120V 30A, a 120/240V 30A twist-lock and the 50A transfer switch-ready outlet. A digital multimeter shows voltage, frequency, total hours run and hours until recommended maintenance, and CO Alert provides automatic shutdown. There is no natural gas option. Pick it if you want maximum dual fuel output and runtime; pick the XP15000HXT if natural gas matters more than engine size. Readers planning an even bigger setup can compare it with our DuroMax 28000 watt generator guide.

• 670cc OHV engine with copper windings
• 13.2 gallon tank listed
• Multimeter with maintenance countdown
• CO Alert automatic shutdown

Best for
Smaller homes needing 9,500 running watts

The DuroMax XP12000EH 12,000-Watt Dual Fuel Portable is the step down, rated at 12,000 starting and 9,500 running watts from a 457cc engine. It still handles lights, appliances and A/C according to the listing, and its MX2 Power Boost doubles the 120V power for appliances and RVs, which is handy when most of your loads are standard household circuits.

It shares the EH build: all-metal frame and power panel, copper windings and no-flat tires, plus low oil shutdown, a CO sensor, foldable handle and electric start, with an 8.3 gallon tank and a 50A transfer switch-ready outlet. It suits smaller homes or anyone with a well-defined load list that sits comfortably under 9,500 running watts. If you plan to run central air and a well pump together, the 13,000 watt class gives you more margin.