Tri-fuel portable generators offer flexibility to run on gasoline, propane, or natural gas, ensuring you have power when fuels are scarce or prices spike. This guide highlights top tri-fuel models from reputable brands, focusing on running watts, peak watts, runtime, and safety features. Whether you’re preparing for severe weather or keeping essentials powered during outages, these units provide dependable backup power for American homes and small businesses.
Summary table of selected products:
| Product | Fuel Options | Peak Watts | Running Watts | |
|---|---|---|---|---|
| Westinghouse 12500 Peak Watt Tri-Fuel | Gas, Propane, Natural Gas | 12500 | Gas: 9500, Propane: 11200, Natural Gas: 9500 | Up to 12 hours |
| Westinghouse 14500 Peak Watt Tri-Fuel | Gas, Propane, Natural Gas | 14500 | Gas: 11500, Propane: 13500, Natural Gas: 12000 | Up to 19 hours |
| DuroStar DS13000MXT | Gas, Propane, Natural Gas | 13000 | Gas: 10000-12500, Propane: 10300, Natural Gas: 8750 | Varies by fuel |
| WEN TF1450 | Gas, Propane, Natural Gas | 14500 | Gas: 11500, Propane: 10300, Natural Gas: 8750 | Depends on fuel |
| Generac 12500 Starting Watt | Gas, Propane, Natural Gas | 12500 | Gas: 9500, Propane unknown, Natural Gas unknown | 12+ hours |
Westinghouse 12500 Peak Watt Tri-Fuel

The Westinghouse 12500 Peak Watt model provides flexibility with three fuel options: gasoline, propane, and natural gas. It delivers up to 9500 running watts on gasoline and supports a remote start via key fob for quick activation. The unit includes a 6.6-gallon tank offering up to 12 hours of runtime, with multiple outlets including GFCI and transfer switch-ready configurations. Safety features include an automatic low-oil shutdown and a CO detector. A digital hour meter helps with maintenance planning.
Westinghouse 14500 Peak Watt Tri-Fuel

This larger Westinghouse model scales up power with 14,500 peak watts and 11,500 running watts on gasoline. It supports all three fuels and is designed for bigger homes or portable job sites, featuring a heavy-duty engine and an extended runtime of up to 19 hours on a full fuel tank. It’s transfer switch-ready and includes a fuel gauge for proactive planning, plus multiple outlets with safety covers for storm preparedness.
DuroStar DS13000MXT Tri Fuel

The DS13000MXT from DuroStar delivers 13,000 watts with tri-fuel flexibility, including a push-button start and a CO alert system to enhance safety. The unit supports gasoline, propane, and natural gas, providing the practical freedom to choose fuel you have on hand. It features a robust 500cc OHV engine, a transfer-switch-ready outlet configuration, and is marketed for whole-home backup and emergency readiness. The design emphasizes reliability and faster start-up in adverse weather conditions.
WEN 14500-Watt Tri-Fuel

The WEN TF1450 switches seamlessly among gasoline, propane, and natural gas, delivering up to 14,500 surge watts and 11,500 running watts on gasoline. It operates in 120V and 240V configurations, making it suitable for home use with transfer switches. The electric start feature simplifies activation during outages, and the unit’s design prioritizes compatibility with residential electrical systems, including a ready-to-use set of outlets and safety features for household protection.
Generac 12,500 Starting Watt Tri-Fuel

Generac’s 12,500 starting-watt tri-fuel generator offers a push-button electric start and a COsense carbon monoxide detection system for enhanced safety. It runs on gasoline, propane, or natural gas, with an engine designed for dependable multi-fuel performance during emergencies. The unit focuses on user-friendly operation, including a fuel selector and runtime information to help manage outages effectively. It’s positioned for home backup use with a balance of power, safety, and ease of maintenance.
Buying Guide: Key Purchase Considerations For Tri-Fuel Generators
- Fuel flexibility: Verify which fuels are supported and consider local fuel availability, storage safety, and long-term cost stability.
- Power needs: Match peak watts to surge requirements for essential appliances, and running watts to common loads like refrigerators, sump pumps, and heating systems.
- Runtime and fuel capacity: Look for larger fuel tanks or efficient engines to maximize uptime between refuels, especially in longer outages.
- Starting method: Electric start is convenient in emergencies; ensure a reliable battery and consider manual recoil as a backup.
- Safety features: CO detectors, automatic shutdown on low oil, proper grounding, and weather-resistant outlets protect occupants and equipment.
- Transfer switch compatibility: Confirm that the unit is transfer-switch ready or that a compatible interlock kit is available for seamless home transfer.
- Portability and durability: Check wheel kits, handles, and overall build to ensure it can be moved and deployed quickly when needed.
- Noise and emissions: Consider models with mufflers and compliant emissions to minimize disruption in residential areas.
- Maintenance and support: Review warranty terms, availability of replacement parts, and customer support responsiveness.
In evaluating these models, balance power output with fuel flexibility, runtime, and safety features. For larger homes or critical circuits, prioritize higher peak and running watts, plus transfer switch readiness. For smaller households, coverage with 9500–11500 running watts on gas may suffice when combined with selective high-priority loads. Always plan for fuel supply continuity and proper storage, and follow local regulations on generator placement and ventilation.