Best Gas Back Up Generator for Home Power Resilience
Choosing a gas back up generator requires balancing power output, fuel flexibility, runtime, and safety features. This guide highlights five strong options, focusing on large, Tri-Fuel and dual-fuel configurations that support whole-home essentials during outages. Each model offers remote start, transfer switch readiness, and robust engine design to minimize downtime and simplify maintenance.
Comparison at a Glance
| Product | Peak/Running Watts (Gas) | Fuel Types | Key Features | Run Time (approx.) |
|---|---|---|---|---|
| Westinghouse 12500 Watt Dual Fuel | 12,500 peak / 9,500 running | Gas, Propane | Remote start, transfer switch ready, CO and low-oil shutdown | Up to 12 hours (gas, 6.6 gal tank) |
| Westinghouse 14500 Peak Watt Tri-Fuel | 14,500 peak / 11,500 running | Gas, Propane, Natural Gas | Long runtimes, fuel gauge, EPA engine | Up to 19 hours (gas) |
| Westinghouse 13500 Peak Watt Tri-Fuel | 13,500 peak / 10,500 running | Gas, Propane, Natural Gas | Remote start, CO/low oil shutdown, full power panel | Up to 19 hours (gas) |
| DuroStar DS13000MXT Tri-Fuel | 13,000 peak / 10,000 running | Gas, Propane, Natural Gas | Remote start, CO alert, transfer switch-ready outlets | Up to 15-19 hours depending on fuel (typical) |
| WEN 4,750-Watt Dual Fuel | 4,750 peak / 3,800 running | Gas, Propane | Electric start, dual voltage (120/240V), portable | Varies by load |
Westinghouse 12500 Watt Dual Fuel
The Westinghouse 12500 Watt Dual Fuel is designed for home backup with dual-fuel flexibility. It delivers 12,500 peak watts on gasoline and 11,200 peak watts when running on propane. Running watts are 9,500 gasoline and 8,500 propane. Features include remote start with a key fob, transfer switch readiness, and a 6.6-gallon tank for extended runtime. It includes multiple outlets with rubber covers for safety and a digital hour meter for maintenance tracking. The heavy-duty 457cc engine rides on a cast iron sleeve with automatic low-oil shutdown.
Westinghouse 14500 Peak Watt Tri-Fuel Outdoor Power
This larger Westinghouse model handles heavier loads with tri-fuel capability, powering a larger home or worksite. It provides up to 14,500 peak watts on gasoline, with 11,500 running watts, and 13,500/10,500 across propane and natural gas. A robust 550cc engine and an extended runtime (up to 19 hours on a full 9.5-gallon tank) support prolonged outages. Features include a digital hour meter, safety outlets with rubber covers, and transfer switch readiness for seamless grid switching.
Westinghouse 13500 Peak Watt Tri-Fuel
The Westinghouse 13500 Peak Watt model delivers strong dual-fuel and tri-fuel performance, with 13,500 peak watts and 10,500 running watts on gasoline, plus 12,500 peak/9,500 running on propane, and 10,000 peak/8,500 running on natural gas. It includes remote electric start, a full power panel with transfer switch-ready and RV outlets, safety features such as automatic low oil shutdown, and a CO shutdown system. A 9.5-gallon tank underpins up to 19 hours of operation depending on fuel choice.
DuroStar DS13000MXT Tri-Fuel
The DS13000MXT from DuroStar provides 13,000 peak watts with running watts at 10,000 on gasoline and flexible fuel options (propane and natural gas). It emphasizes whole-home reliability in outages with a CO alert and a push-button start. A transfer switch-ready 50-amp outlet is included, and the unit is designed to operate in varied weather conditions with a robust 500cc engine. It supports remote electric start for quick activation.
WEN 4,750-Watt Dual Fuel
The WEN DF4750 offers dual-fuel versatility in a compact, portable package. It starts with 4,750 peak watts and 3,800 running watts on gasoline and 4,350 peak / 3,500 running watts on propane. It includes a 224cc 4-stroke engine and an electric start, making it suitable for emergency backups or small loads. The model is designed for easy transport and use with standard household outlets when paired with a transfer switch.
Buying Guide: Key Purchase Considerations
- Power needs: Determine essential circuits and total required watts to avoid over- or under-sizing. Tri-fuel models provide flexibility, while dual-fuel units keep you stocked with two fuel options.
- Fuel capacity and runtimes: Larger tanks and efficient engines yield longer runtimes, reducing frequency of refueling during outages.
- Starting method and reliability: Remote electric start and push-button starts improve responsiveness. Look for a digital hour meter and automatic low-oil shutoff for ongoing maintenance.
- Transfer switch compatibility: Ensure the generator is transfer switch ready or compatible with common transfer switches to safely power a home panel.
- Safety features: Rubber outlet covers, CO monitors, and CO shutdowns contribute to safer operation in occupied spaces.
- Fuel options: Gasoline is common, but propane or natural gas compatibility offers longer-term fuel stability in some regions.
- Portability vs. home standby: Large, high-wattage generators provide whole-home backup but are heavier; portable units offer flexibility but may require a manual transfer process.
- Maintenance and service: Check manufacturer support, parts availability, and engine design (cast-iron sleeves and OHV configurations tend to be durable).
- Noise and emissions: Consider quiet operation and CO safety features, especially for residential use.
- Warranty and longevity: Longer warranties and robust build quality indicate better long-term value and reliability.
When evaluating options, align the choice with your anticipated load, duration of outages in your area, and preferred fuel type. The listed models provide a range from compact dual-fuel units to higher-watt tri-fuel systems suitable for larger homes. Always follow manufacturer installation instructions and consult a licensed electrician for transfer switch integration to ensure safe, code-compliant operation.