If you’re preparing for outages or seeking reliable portable power with gas, propane, and natural gas compatibility, tri-fuel generators offer flexibility and resilience. This guide highlights top options that support natural gas backup while still running on propane or gasoline when needed. Each model below is assessed for run-time, safety features, and transfer-switch readiness to help you compare performance and value.
| Product | Fuel Types | Peak Watts |
|---|---|---|
| Westinghouse 14500 Peak | Gas, Propane, Natural Gas | 14,500 |
| Westinghouse 13500 Peak | Gas, Propane, Natural Gas | 13,500 |
| DuroStar DS13000MXT | Gas, Propane, Natural Gas | 13,000 |
| Westinghouse 12500 Peak | Gas, Propane, Natural Gas | 12,500 |
| WEN TF1450 | Gas, Propane, Natural Gas | 14,500 |
Westinghouse 14500 Peak Tri-Fuel Generator

The Westinghouse 14500 Peak Tri-Fuel model provides strong power for larger homes or busy work sites. It delivers 14,500 peak watts with gasoline and up to 12,000 peak watts on natural gas, with corresponding running watts designed for longer runtimes. A heavy-duty 550cc four-stroke OHV engine and a cast iron sleeve contribute to durability, while a built-in fuel gauge helps manage long outages. Run times reach up to 19 hours on a 9.5-gallon gasoline tank and around seven hours on a 20-pound propane cylinder, making it suitable for extended use.
Key safety features include automatic low-oil shutdown and a CO monitor, with transfer switch readiness to integrate with home electrical systems. The unit supports remote electric start for convenient operation and requires proper installation for secure backup power. Consider the space needed for setup and the availability of compatible transfer switches when planning an installation.
Westinghouse 13500 Peak Tri-Fuel Generator

With 13,500 peak watts on gasoline and up to 10,000 watts on natural gas, this model balances power and efficiency. It features remote start with a key fob plus electric and recoil start options, enabling quick startup during emergencies. A 9.5-gallon fuel tank, accompanied by a fuel gauge, supports lengthy operation. The generator provides multiple outlets including transfer switch-ready and RV-ready configurations, with rubber-coated outlets for safety. The 500cc Westinghouse engine uses a cast iron sleeve and includes automatic low-oil and CO shutdown systems, and a digital hour meter for maintenance planning.
Outlets and safety considerations are important for a seamless backup setup, especially when coordinating a transfer switch with a home panel. Ensure compatibility with your existing transfer switch and understand the required clearances for safe operation in your space.
DuroStar DS13000MXT Tri-Fuel Generator

The DS13000MXT combines high output with flexible fuel options, delivering 13,000 watts on gasoline and substantial outputs on propane and natural gas. It’s designed for whole-home power backups and includes CO alert technology to reduce exposure to harmful fumes during outages. This model emphasizes tri-fuel versatility, allowing you to switch fuels as needed without sacrificing performance. A push-button start and a user-friendly power panel provide straightforward operation, including a transfer switch-ready outlet for seamless integration into a home electrical system.
Consider the 500cc engine’s load capacity and the availability of compatible fuel sources in your area. Regular maintenance and proper ventilation are essential to maintain safe operation in residential environments.
Westinghouse 12500 Peak Tri-Fuel Generator

This model offers 12,500 peak watts and 9,500–8,500 running watts across gasoline, propane, and natural gas. It includes a remote start with a key fob, plus electric and recoil start options for flexible startup. A 6.6-gallon fuel tank with a fuel gauge provides moderate runtime, while a transfer switch-ready outlet and RV-ready options support a range of backup scenarios. The engine uses a cast-iron sleeve and safety features such as automatic low-oil shutdown and a digital hour meter to help plan maintenance before outages escalate.
When integrating with a home electrical system, verify the transfer switch compatibility and consider installation clearances, noise levels, and fuel logistics.
WEN 14500-Watt Tri-Fuel Generator

The WEN TF1450 offers versatile fuel options and a robust output suitable for transfer-switch setups. It switches between gasoline (14500 surge, 11500 running), propane (12500 surge, 10300 running), and natural gas (10500 surge, 8750 running) via a simple dial. Operating at both 120V and 240V, it is well-suited for emergency backup needs, especially where a transfer switch is in use. The electric start simplifies startup, and the built-in wheel kit makes relocation easier as weather or outages dictate placement.
Check for compatibility with your home’s transfer switch and ensure the unit’s noise levels, exhaust, and location comply with local regulations and safety guidelines during extended outages.
Buying Guide: Key Considerations For Tri-Fuel Generators
- Fuel flexibility: Confirm which fuels are supported (gasoline, propane, natural gas) and the convenience of changing fuels during outages.
- Power output and needs: Match peak and running watts to your essential loads, including heating, cooling, and critical appliances.
- Transfer switch readiness: Ensure the unit is compatible with a home transfer switch and plan for safe, code-compliant installation.
- Engine durability: Look for engines with cast iron sleeves and safety features like CO shutdown and low-oil alerts.
- Run time and fuel tanks: Evaluate runtime per fuel type and the size of the fuel tanks to estimate time between refills.
- Outlets and safety: Check for rubber-coated outlets, appropriate receptacles, and integrated safety measures like overload protection and automatic shutdown.
- Maintenance and monitoring: Digital hour meters and straightforward maintenance schedules help keep outages brief and predictable.
- Noise and footprint: Consider acceptable noise levels and space requirements for safe operation and storage.
- Warranty and support: Assess warranty length and the availability of parts and service in your region.
- Installation considerations: Some models require professional installation for gas connections or transfer switch integration; confirm local codes and installer qualifications.