Best Dual Fuel Generators for Power Backup and Flexibility
When outages strike, a reliable dual fuel generator can be a lifeline. Dual fuel units run on gasoline or propane, offering flexibility, longer storage life for propane, and often higher power outputs for home backup. This guide highlights five top options, comparing run times, power output, safety features, and transfer-switch readiness to help American homeowners choose with confidence.
| Product | Fuel Options | Key Benefit |
|---|---|---|
| Westinghouse 12500 Watt Dual Fuel | Gas / Propane | High peak and running watts with transfer switch readiness |
| DuroStar DS13000MX | Gasoline / Propane | Large output with CO safety feature |
| Westinghouse 14500 Peak Dual Fuel | Gas / Propane | Higher peak wattage for bigger homes |
| WEN DF1100T | Gasoline / Propane | Balanced power with ease of start and versatility |
| DuroMax XP13000HX | Gas / Propane | High wattage with durable copper windings |
Westinghouse 12500 Watt Dual Fuel Generator
The Westinghouse 12500 Watt Dual Fuel Home Backup Portable Generator provides gasoline and propane power with remote electric start and transfer switch readiness. Its 457cc Westinghouse OHV engine supports up to 12 hours of runtime on a full tank, depending on fuel type. It includes a 6.6-gallon tank, a digital hour meter, and a CO-safe shutdown option. The unit offers two GFCI 120V outlets, a 30A transfer switch outlet, and a 50A RV-capable outlet, making it suitable for whole-home backup and RV use. This model balances robust power with practical safety features and monitoring for real-time output data.
DuroStar DS13000MX 13,000-Watt Dual Fuel
The DuroStar DS13000MX delivers 13,000 watts of power with dual-fuel capability for gasoline or propane. This model is designed for whole-home backup, with a remote electric start and transfer switch readiness. It emphasizes fuel flexibility to maximize run time during outages and features a heavy-duty build intended for long-term reliability. The CO alert adds a safety layer to alert and shut down the unit if dangerous fumes are detected, helping to protect occupants during extended outages.
Westinghouse Outdoor Power 14500 Peak Dual Fuel Generator
This unit targets larger homes and heavier loads with 14,500 peak watts and 11,500 running watts on gas, then 13,500 peak and 10,500 running watts on propane. It runs up to 19 hours on a 9.5-gallon fuel tank with a gauge, and can extend operation on a 20-pound propane tank for shorter outages. It is designed for transfer-switch compatibility, making it a strong choice for dedicated backup power setups where extended autonomy matters.
WEN 11,000-Watt DF1100T Dual Fuel
The WEN DF1100T offers 11,000 surge watts and 8,300 running watts on gasoline, with 9,500 surge and 7,500 running watts on propane. It supports 120V/240V output, which is ideal for transfer switches and emergency backup. An electric start simplifies operation, and the unit is designed with portability in mind for residential and small business use. This model aims to balance power, fuel flexibility, and ease of use for frequent outages or job-site needs.
Westinghouse 12500 Peak Watt Dual Fuel (CO Sensor)
This variant of the Westinghouse model emphasizes safety with a carbon monoxide shutdown feature alongside CO monitoring. It provides 9,500 running watts and 12,500 peak watts on gasoline, and 8,500 running watts with 11,200 peak on propane. It includes a direct start option, a 6.6-gallon tank with fuel gauge, and multiple outlets including a 50A RV-ready receptacle. The CO sensor support helps reduce risk during extended outages and when used in enclosed spaces with proper ventilation.
Buying Guide
Power needs: Assess your home’s essential circuits and major appliances to determine the required peak watts and running watts. If you rely on air conditioning or electric heat, prioritize higher running watts and a reliable 50A outlet for transfer switches and large loads.
Fuel flexibility: Dual fuel units let you switch between gasoline for maximum power and propane for longer storage and cleaner emissions. Propane typically lasts longer in storage, while gasoline offers more readily available power during storms.
Runtime and fuel capacity: Consider the fuel tank size and estimated runtime at a typical load. Larger tanks deliver longer operation between refuels, which helps during extended outages. Some models pair a larger tank with a fuel gauge for monitoring.
Safety features: CO alarms, automatic shutdown on low oil, and CO sensors add essential protections. Ground fault protection, rubber outlet covers, and weather-resistant design contribute to safer operation in different environments.
Transfer switch readiness: If you plan to connect to a home electrical system, ensure the generator is transfer switch ready or compatible with an Interlock Kit. This simplifies safely powering your home’s critical circuits during outages.
Noise and portability: Inverters generally run quieter and more fuel-efficient at partial loads, which can be beneficial for neighborhood use. Wheel kits and compact designs improve mobility for job sites or temporary setups.
Maintenance and lifespan: Look for robust engines, cast-iron sleeves, and copper windings when durability matters. Regular oil changes, air filters, and spark plug maintenance extend life and reliability.
Best value considerations: If you need a strong balance of power, safety features, and ease of use for typical American homes, a 11,000–13,000-watt dual fuel model with transfer switch compatibility often delivers the best mix of performance and flexibility. For larger homes or more demanding loads, consider models with 13,000+ watts and 50A outlets designed for whole-home backup.