Reliable gas-powered back up generators give homeowners a dependable power source during outages and severe weather. This guide highlights top models, with a focus on dual-fuel and tri-fuel options that maximize run time, ease of use, and safety. Learn what to look for, compare key specs, and find the right generator to keep essential appliances running when the grid goes dark.
| Product | Fuel Type(s) | Peak Watts / Running Watts |
|---|---|---|
| Westinghouse 12500 Peak Watt Dual Fuel | Gasoline / Propane | 12,500 / 9,500 (Gas); 11,200 / 8,500 (Propane) |
| DuroMax XP13000HX | Gasoline / Propane | 13,000 / (varies by fuel) |
| Westinghouse 14500 Peak Watt Tri-Fuel | Gasoline / Propane / Natural Gas | 14,500 / 11,500 (Gas); 13,500 / 10,500 (Propane); 12,000 / 9,500 (Natural Gas) |
| Generac Guardian 10kW | Natural Gas / Propane (via transfer switch) | 10,000 / varies with setup |
| Generac 12,500/9,500-Watt Tri-Fuel | Gas / Propane / Natural Gas | 12,500 / 9,500 (Gas); 11,200 / 7,500 (Propane); 12,000 / 9,000 (Natural Gas) |
Choosing the right gas back up generator involves evaluating power needs, fuel availability, and installation options. The following sections highlight five strong choices, with practical details to help you compare performance, run time, and safety features.
Westinghouse 12500 Peak Watt Dual Fuel
- Gasoline: 9500 running watts, 12500 peak watts
- Propane: 8500 running watts, 11200 peak watts
- Remote start with key fob; electric and recoil options
- 12-hour runtime on a 6.6-gallon tank; CO shutdown safety
- Transfer switch ready and multiple outlet options
This model blends high power with dual-fuel versatility, offering robust performance for whole-home backup. Remote start adds convenience, while safety features help manage CO risks during extended outages.
DuroMax XP13000HX 13,000-Watt Dual Fuel
- 13,000 watts total power; dual fuel compatibility
- Gasoline or propane operation; CO alert feature
- 500cc OHV engine; all-copper windings for durability
- Designed for whole-home backup with transfer switch readiness
Designed for serious power needs, the XP13000HX provides strong performance with flexible fuel options. Its copper windings and CO alert help ensure reliability and safety during extended outages.
Westinghouse 14500 Peak Watt Tri-Fuel
- Gas, propane, and natural gas options
- 14,500 peak watts; up to 19 hours runtime on a 9.5-gallon tank
- 550cc engine; built-in fuel gauge; versatile outlets
- Long runtime for large homes and weather events
Tri-fuel capability expands fuel availability during emergencies, making this Westinghouse model a strong pick for larger homes or properties where alternative fuel sources are critical.
Generac Guardian 10kW
- Automatic whole-house backup with 100 Amp transfer switch
- Wi-Fi monitoring for remote status updates
- Durable enclosure; designed for outdoor use
- Long-term maintenance with a 5-year limited warranty
Generac’s Guardian series emphasizes automatic operation and remote monitoring, making it a practical option for homeowners seeking seamless power restoration without manual intervention during outages.
Generac 12,500/9,500 Tri-Fuel
- Gas/Propane/Natural Gas options
- 12,500 peak / 9,500 running watts (gas); alternative fuel outputs
- Electric start with battery included
- Rugged protection and long runtime for outages
This Generac model combines tri-fuel flexibility with user-friendly electric start, making it a versatile choice for varied power needs and fuel availability at home.
Buying Guide: Key Purchase Considerations
Power needs: Estimate essential circuits and appliances to determine required wattage. Add a buffer for surge loads and future needs.
Fuel options and availability: Dual- or tri-fuel units offer flexibility if gas, propane, or natural gas is more accessible or cheaper in your area.
Run time and tank size: Longer runtimes on a single tank reduce refueling interruptions during outages. Check fuel capacity and efficiency ratings.
Transfer switch compatibility: For seamless whole-house backup, ensure the generator is transfer switch ready or compatible with your existing panel.
Safety features: CO shutdown, electric start reliability, and weatherproof enclosures matter for safety and longevity in outdoor setups.
Noise and footprint: Consider decibel levels and space constraints, especially in residential neighborhoods with nearby living areas.
Warranty and service support: A robust warranty and accessible parts network can lower long-term maintenance costs and downtime.
Monitoring and automation: Wi-Fi or mobile monitoring helps you stay informed about status, maintenance needs, and fuel levels while away from home.