Best 100 Kw Natural Gas Generator Options for Home Backup
If you’re shopping for a 100 kW class natural gas generator, you want reliability, fuel flexibility, and easy transfer to a backup power setup. This guide highlights five tri-fuel options that can run on gasoline, propane, or natural gas, with features like CO shutdown, electric start, and transfer-switch readiness. Each model is suited to different buyers: homeowners seeking whole-home backup, contractors needing portable power, and emergency planners prioritizing fuel versatility. The table below compares the top picks at a glance to help narrow your choice before diving into details.
| Product | Best For | Fuel Options | Key Feature |
|---|---|---|---|
| WEN TF-1450X | Home backup with CO protection | Gas, Propane, Natural Gas | CO Watchdog shutoff |
| DuroStar DS13000MXT | Whole-home power with remote start | Gas, Propane, Natural Gas | Remote electric start |
| Generac 12,500 Tri-Fuel | Reliable AVR and high surge | Gas, Propane, Natural Gas | Automatic voltage regulation |
| DuroMax XP13000HXT | Budget-friendly tri-fuel option | Gas, Propane, Natural Gas | CO Alert |
| Westinghouse 13500 Peak | Remote start with long run time | Gas, Propane, Natural Gas | CO shutdown and digital hour meter |
WEN 14,500-Watt Tri-Fuel Generator
The WEN TF-1450X offers 14,500 surge watts and 11,500 running watts on gasoline, with 12,500 surge watts and 10,300 running watts on propane, and 10,500 surge watts and 8,750 running watts on natural gas. It operates at both 120V and 240V, making it suitable for transfer switches and whole-house backup. A notable safety feature is the WEN Watchdog CO Shutdown Sensor, which automatically turns off the generator if dangerous carbon monoxide levels are detected. This model is best for homeowners who want solid, all-around performance and a strong emphasis on safety for indoor or semi-enclosed spaces. A potential limitation is that tri-fuel setups add complexity and weight, which can affect portability.
Who it’s best for and why: Ideal for homeowners prioritizing fuel flexibility and CO protection during power outages. Choose this if you want an integrated CO shutdown along with a robust 240V capability for larger appliances and systems. Caution: ensure proper ventilation when operating indoors or in enclosed spaces, even with CO protection active.
DuroStar DS13000MXT Tri Fuel Generator
The DS13000MXT delivers 13,000 watts and is configured for gas, propane, or natural gas, with a push-button start and a transfer-switch-ready 50-amp outlet. Its design centers on providing whole-home backup during severe weather or extended outages, while offering CO Alert to help reduce exposure to fumes. This model is best for users who want a straightforward, high-powered tri-fuel system with convenient electric start and a ready-to-use power panel. Limitation: the bigger power output can come with higher fuel consumption and louder operation in some settings.
Who it’s best for and why: Choose this if you need strong, all-around power with easy start and a clear transfer-switch-ready outlet for seamless switching to backup power. Better for larger homes or small businesses that need reliable immediate power during outages. Caution: operation and maintenance are more involved than smaller portable units.
Generac 12,500 Starting Watt Tri-Fuel
The Generac model provides 9,500 running watts and 12,500 starting watts, with tri-fuel capability and CO sense for automatic shutdown in dangerous conditions. It includes an AVR to stabilize voltage and support motor-driven tools and appliances. This option is best for users needing robust surge capacity to handle simultaneous appliance starts or equipment loads. A limitation to consider is that the 9,500 running watts may be tight for larger homes if several core loads run simultaneously.
Who it’s best for and why: Choose this if you require high surge capability to handle air conditioners or sump pumps simultaneously, while maintaining reliable voltage. Avoid this if you expect very long runtimes on natural gas without refueling, due to fuel section limitations.
DuroMax XP13000HXT Tri Fuel Generator
The XP13000HXT provides 13,000 watts of power and supports gasoline, propane, and natural gas with CO Alert. Its 500cc OHV engine emphasizes durability and strong steady output during storms or outages. This option is best for buyers who want a balance of power, protection, and fuel flexibility at a consumer-friendly price point. Limitation: like other tri-fuel units, there can be more components to maintain compared with single-fuel generators.
Who it’s best for and why: Choose this option if you want reliable tri-fuel operation with a CO alert system and a sturdy engine. Better for budget-conscious buyers who still need strong backup power. Caution: ensure adequate servicing and checks of the fuel system for tri-fuel performance consistency.
Westinghouse 13500 Peak Watt Tri-Fuel
The Westinghouse model delivers 13,500 peak watts and 10,500 running watts on gasoline, 12,500 peak watts and 9,500 running watts on propane, and 10,000 peak watts with 8,500 running watts on natural gas. Notable features include remote start with a key fob, 19 hours of runtime on a large fuel tank, and a comprehensive set of outlets including RV and household receptacles. This choice is best for users who value long run times and a full suite of transfer-ready outlets. Limitation: peak watt numbers can be misleading if you rely on continuous operation under heavy loads; use running watts as the more accurate guide for daily use.
Who it’s best for and why: Choose this if you want long run time and remote convenience for frequent outages, plus a broad outlet selection. Avoid this if you need the smallest, lightest portable tri-fuel option.
Buying Guide
What to consider when selecting a 100 kW natural gas generator:
- Fuel flexibility: Tri-fuel models offer gasoline, propane, and natural gas. This is valuable for fuel availability and emergency planning.
- Power needs: Compare running watts to your essential loads. For whole-home backup, prioritize models with higher running watts and good surge capacity.
- Starting method: Electric start is convenient, especially during power outages, but ensure you have a reliable battery and backup pull-start if needed.
- Safety features: CO shutdown and ventilation requirements protect occupants in semi-enclosed spaces.
- Transfer switch compatibility: If you plan to power a subpanel, confirm transfer-switch readiness and compatible outlets (L14-30, 14-50, etc.).
- Run time and tank size: Look for larger fuel capacity and longer run times if outages last days; note fuel economy varies by fuel type.
- Noise and portability: Higher-watt units can be louder and heavier; consider sound ratings and transportation needs for your site.
FAQ
- What is the main benefit of tri-fuel generators?
They offer flexibility to run on different fuels, reducing the risk of being unable to refuel during an outage. - How do I choose the right running watts?
- Does CO shutdown protect against all carbon monoxide risks?
- Is remote start worth it for a home backup system?