Best Tri-Fuel Generators for Natural Gas Power
If you need reliable tri-fuel power—gasoline, propane, or natural gas—these generators provide versatility for homes and emergency sites. This guide highlights models that are best suited for different buyers: homeowners seeking whole-home backup, remote property owners needing transfer-switch compatibility, and users prioritizing quiet, fuel-efficient operation. Each option supports natural gas alongside other fuels, so you can switch fuels as needed without sacrificing performance.
Summary of selected products:
- Westinghouse 14500 Peak Watt Tri-Fuel: high power, long runtime on gas and efficient propane or natural gas options.
- Westinghouse 12500 Peak Watt Tri-Fuel: solid mid-range power with strong transfer-switch readiness and safety features.
- WEN 14,500-Watt Tri-Fuel: reliable switch between fuels with a CO watchdog for safety.
- DuroStar DS13000MXT: robust tri-fuel capacity with CO alert and transfer-switch-ready outlets.
- DuroMax XP13000HXT: flexible tri-fuel power with CO alert and strong warmth for whole-home needs.
Westinghouse 14500 Peak Watt Tri-Fuel Generator
The Westinghouse 14500 Peak Watt tri-fuel model delivers up to 14,500 peak watts with gasoline, 13,500 peak watts on propane, and 12,000 peak watts on natural gas. It runs on a heavy-duty 550cc engine and can operate up to 19 hours on a full 9.5-gallon tank, or up to 7 hours on a 20-pound propane cylinder. Best for owners needing high total power and longer runtime on gasoline, this unit is suitable for larger homes or job sites that demand sustained output. Caution: natural-gas performance depends on your home supply and pressure, which can affect runtime and surge capacity.
Who it’s best for: large homes or remote locations where a strong gasoline backbone is preferred, with added flexibility for propane or natural gas.
Why selected: It offers one of the highest peak wattages among tri-fuel options and a robust engine design with a cast iron sleeve for durability under heavy loads.
Limitation: Higher fuel consumption on gasoline at full load means more frequent refueling in extended outages unless you have ample tank capacity.
Westinghouse 12500 Peak Watt Tri-Fuel Generator
The 12500 Peak Watt generator offers 9,500 running watts on gasoline, 11,200 peak and 8,500 running watts on propane, and 9,500 peak/7,500 running watts on natural gas. It includes remote start with a key fob, plus electric and recoil start options. Runtime reaches up to 12 hours on a 6.6-gallon tank and includes multiple outlets: standard 120V 5–20R, transfer switch-ready 120V L14-30R, and RV-ready 120/240V 14–50R, with rubber outlet covers for safety. Digital hour meter and automatic low oil and CO shutdown add protection. Best for households needing balanced power and safety features. Limitation: propane and natural gas outputs are lower than gasoline at times, depending on load.
Who it’s best for: households looking for strong mid-range tri-fuel capability with convenient remote start and transfer-switch readiness.
Why selected: It provides a comprehensive set of outlets and safety features while maintaining good performance across all fuels.
Limitation: The unit’s gas performance can dip under heavy simultaneous loads compared with gasoline capability.
WEN 14,500-Watt Tri-Fuel Generator
The WEN TF-1450X offers gasoline, propane, and natural gas operation with 14,500 surge watts, 11,500 running watts on gasoline, 12,500 surge/10,300 running on propane, and 10,500 surge/8,750 running on natural gas. It supports 120V and 240V output and is designed to be transfer-switch ready. A CO watchdog sensor adds automatic shutdown if dangerous carbon monoxide levels are detected. Best for users who want straightforward fuel switching and CO safety features. Limitation: CO safety features depend on proper sensor placement and ventilation in outdoor setups.
Who it’s best for: households seeking a reliable emergency backup with easy fuel switching and built-in CO protection.
Why selected: It combines transfer-switch readiness with an integrated safety sensor, making it a practical all-around choice for mid-to-large homes.
Limitation: The efficiency and runtime on natural gas can be lower than gasoline, particularly under high electrical demand.
DuroStar DS13000MXT Tri-Fuel Generator
The DS13000MXT delivers 13,000 watts of power with gasoline, propane, or natural gas. It includes a CO alert system and a fully loaded power panel with push-button start, a fuel selection knob, and multiple outlets plus transfer-switch readiness. Best for whole-home backup and family safety during outages. Limitation: some users report heavier weight and portability constraints typical of larger stationary backup generators.
Who it’s best for: homeowners needing substantial tri-fuel power with clear controls and transfer-switch readiness.
Why selected: It emphasizes safety (CO alert) and a robust power panel for diverse outage scenarios.
Limitation: Transport and storage considerations due to size and weight may affect setup flexibility.
DuroMax XP13000HXT Tri-Fuel Generator
The XP13000HXT delivers 13,000 watts with gas, propane, or natural gas and includes CO Alert for improved safety. It supports tri-fuel operation and is designed to deliver power during storms or outages. Best for users who want maximum fuel flexibility and CO safety features in a rugged package. Limitation: may require regular maintenance and fuel system care to sustain peak performance across all fuels.
Who it’s best for: families needing consistent tri-fuel capability with safety features and a robust engine.
Why selected: It balances power, safety, and fuel choice in a portable generator suitable for critical loads.
Westinghouse 13500 Peak Watt Tri-Fuel Generator
With 13,500 peak watts on gasoline, 12,500 peak on propane, and 10,000 peak on natural gas, this model includes a remote start, transfer-switch readiness, and up to 19 hours of runtime on a large fuel tank. It features two GFCI outlets, an RV outlet, and a 50A transfer-switch-ready option. Best for larger residences requiring substantial tri-fuel capability and extended runtimes. Limitation: natural gas output is lower than gasoline, which may affect full-house loads during peak surges.
Who it’s best for: homeowners prioritizing a strong balance of peak power, safety features, and long run times.
Why selected: It offers a broad outlet assortment and a long runtime on a sizable tank, suitable for full-home loads during outages.
Westinghouse iGen8200TFc Tri-Fuel Inverter Generator
This inverter model offers tri-fuel flexibility with inverter-quality power for sensitive electronics. It provides gasoline outputs up to 8,200 peak watts, propane up to 7,380 peak, and natural gas up to 6,560 peak. It also features a 50A transfer switch-ready outlet and quieter operation thanks to inverter technology. Best for apartments or homes with electronics that require clean power. Limitation: lower peak capacity means it may not support very large air conditioners or heavy loads simultaneously.
Who it’s best for: users who need clean, portable power for electronics with backup capability and a quiet profile.
Why selected: It brings inverter benefits to tri-fuel versatility, helping protect sensitive devices while still supporting home backup.
Westinghouse 12000 Peak Watt Tri-Fuel Portable Inverter
The iGen12000TFc tri-fuel inverter covers 12,000W peak on gasoline, 11,000W peak on propane, and 9,800W peak on natural gas, with 9,000W running on gasoline and 7,200W running on natural gas. It emphasizes a safe, low-THD power output for electronics and includes a 50A outlet. Best for whole-home backup where sensitive electronics are at risk from dirty power. Limitation: higher cost typical of inverter models and increased maintenance complexity compared with open-frame units.
Who it’s best for: households needing high-quality, clean power for electronics during outages.
Why selected: It combines tri-fuel flexibility with an inverter design aimed at protecting modern devices while delivering substantial power.
Buying Guide: Key Considerations for Tri-Fuel Generators
- Fuel flexibility vs. peak power: Tri-fuel models offer fuel choice, but gasoline typically delivers the highest peak wattage. Consider your outage scenarios and fuel availability.
- Transfer switch readiness: If you plan to run essential circuits automatically, ensure your model is transfer-switch ready and compatible with your panel.
- Safety features: CO alert and automatic shutdown are important when running near living spaces or in garages. Look for overload protection and grounded outlets.
- Run time and fuel capacity: Larger gas tanks extend runtime. For natural gas, verify gas line pressure and supply limits to avoid performance drops during peak loads.
- Inverter vs. traditional: Inverter models provide cleaner power for electronics and often lower noise, but may have lower max output. Choose based on load needs and electronics compatibility.
Practical buying questions
- What is my typical outage load, and does it justify higher wattage?
- Do I have a suitable transfer switch or panel configuration for seamless backup?
- Is a CO sensor a priority for outdoor siting or enclosed spaces?
- Which fuel is most convenient and affordable where I live?
- Do I need inverter power for electronics, or is traditional power sufficient?
FAQ
- Q: Can these generators run an air conditioner on natural gas?
- A: Yes, some tri-fuel models supply enough wattage to support aACs, but check the specific peak and running watts for your unit and the air conditioner’s requirements.
- Q: How does fuel type affect runtime?
- A: Gasoline typically provides longer runtimes per tank, while natural gas is limited by supply pressure and line size, which can affect sustained output.
- Q: Are tri-fuel generators harder to maintain?
- A: They can require more maintenance due to multiple fuel systems, but many models include safety shutdowns and CO sensors to aid reliability.
- Q: What should I consider when wiring to a transfer switch?
- A: Ensure the switch is compatible with the generator’s outlet configuration and that a licensed electrician performs the installation.
- Q: Do tri-fuel generators support parallel operation?
- A: Some models are parallel capable, enabling higher combined output with another compatible unit. Check the specific model’s features.