Best Natural Gas Powered Generators for Lasting Home Backups
If you need reliable power during outages, a tri-fuel generator that can run on natural gas is a strong choice for backup power. This guide highlights five top options that balance power, fuel flexibility, and safety features. Ideal buyers include homeowners seeking whole-home backup, small business owners needing emergency power, and campers or RV users who want fuel versatility. The table below compares key specs to help you decide at a glance.
| Product | Fuel Options | Peak Watts | Running Watts | Special Feature |
|---|---|---|---|---|
| WEN TF-1450X | Gas, Propane, Natural Gas | 14500 | 11500 | CO Watchdog, transfer-switch ready |
| DuroStar DS13000MXT | Gas, Propane, Natural Gas | 13000 | 13000 | Push button start, wide outlets |
| Westinghouse 13500 Peak | Gas, Propane, Natural Gas | 13500 | 10500 (Gas) | Remote start, CO shutdown |
| Westinghouse 14500 Peak | Gas, Propane, Natural Gas | 14500 | 11500 | High power, long run time |
| Generac 12500 Starting | Gas, Propane, Natural Gas | 12500 | 9500-12500 | COsense, AVR |
WEN 14,500-Watt Tri-Fuel Generator (TF-1450X)

The WEN TF-1450X switches between gasoline, propane, and natural gas with a simple dial, delivering strong peak and running watts for home backup. It operates at 120V and 240V, making it suitable for transfer switches and whole-home setups. It includes the WEN Watchdog CO Shutdown Sensor for automatic shutoff if dangerous carbon monoxide levels are detected.
Best for: Homeowners needing flexible fuel options and a robust transfer-switch-ready unit. Why selected: The straightforward fuel switching and CO protection provide reliable standby power with enhanced safety. Limitation: Gasoline and propane variants may require regular maintenance to retain performance self-tests.
DuroStar DS13000MXT Tri Fuel Portable Generator

The DS13000MXT offers full-home power backup with tri-fuel capability and a remote electric start. It features a 500cc engine and a comprehensive power panel with a transfer-switch-ready outlet. This model emphasizes convenience and readiness for larger load scenarios, including emergency power for essential devices.
Best for: Households seeking a high-output, all-fuel option with easy remote start. Why selected: Strong overall power supply and convenient transfer-switch compatibility. Limitation: The unit is sizeable and may require more storage space and handling care than smaller models.
Westinghouse 13500 Peak Watt Tri-Fuel

This model delivers 13,500 peak watts with multiple outlets, including a transfer-switch-ready option and an RV-ready receptacle. It features a remote start with a key fob and a long runtime on a full fuel tank. It also includes safety features like CO shutdown and hour meters.
Best for: Users who want automated convenience and a broad outlet set for temporary or mobile use. Why selected: Balanced power, safety features, and practical runtime. Limitation: Gasoline runtime may be significantly shorter under heavy loads compared with larger tanks.
Westinghouse 14500 Peak Watt Tri-Fuel

Designed for larger backup needs, this Westinghouse 14500 unit delivers substantial peak power and strong running watts across fuels. It features a heavy-duty engine and a long-running capability on sizable fuel tanks, plus a CO shutdown for safety. It suits bigger homes or job sites.
Best for: Consumers planning for significant power demands during outages. Why selected: The high peak wattage supports simultaneous high-load appliances. Limitation: Higher weight and footprint may limit portability.
Generac 12,500 Starting Watt Tri-Fuel

The Generac unit provides tri-fuel versatility with automatic voltage regulation and COsense CO detection for safety. It delivers 9,500 running watts with 12,500 starting watts, suitable for powering multiple high-demand loads. The AVR helps maintain stable output for sensitive equipment.
Best for: Users needing dependable surge capacity with smart protection features. Why selected: AVR and COsense offer enhanced equipment protection. Limitation: The control system may be more complex for first-time users.
Buying Guide
Fuel flexibility, power needs, and safety features are key when choosing a tri-fuel generator. Consider the following questions to guide your decision:
- What is my essential load? List appliances and devices to estimate peak watts.
- What fuel is most available in my area? Natural gas is steady but may require a dedicated line.
- Do I need a transfer switch-ready model for seamless home backup?
- Is automatic CO shutdown important for safety in my home?
- How portable should the unit be, and what are the space constraints?
Key comparison factors to track: peak watts vs running watts, number and type of outlets, start method (electric vs recoil), run time on a full tank, and safety features like CO detection and shutdown. For safety, a model with automatic CO shutdown and durable engine construction is preferable for long-term use. If you need maximum surge power for air conditioners or pumps, prioritize higher peak wattage and reliable fuel switching. For portability, consider weight, wheels, and handle design.
FAQ
- Q: What is the advantage of tri-fuel generators? A: They offer fuel flexibility, enabling operation with natural gas, propane, or gasoline depending on availability.
- Q: Do all tri-fuel generators support transfer switches? A: Most listed models are transfer-switch ready, but verify the exact outlets and compatibility with your transfer switch model.
- Q: How important is CO sensing? A: CO sensing protects occupants by automatically shutting down the generator if high carbon monoxide is detected.
- Q: Which fuel provides the longest runtime? A: Runtime depends on load and tank size; natural gas can offer steady operation where pipelines are available, while gasoline or propane may provide shorter run times at heavy loads.
- Q: Is remote start a standard feature? A: Several models include remote or electric start, which adds convenience for frequent startups during outages.
- Q: How do I determine the right wattage? A: Add up the running watts of essential devices and consider surge requirements for starting motors or pumps to ensure enough capacity.