Best Dual Fuel Generators for Natural Gas and Backup Power
Choosing a reliable dual fuel generator that can run on natural gas offers convenient, long-term backup power without the need for frequent fuel changes. The following selections balance output, fuel flexibility, and ease of use to support critical loads during outages. Each option supports transfer switches, electric or remote start, and safety features to help you keep essential electronics and appliances running when the grid goes down.
| Product | Estimated Output | Fuel Capabilities | Key Features |
|---|---|---|---|
| Westinghouse 13500 Peak / 10500 Running (Gas) | 13,500 peak / 10,500 running (gas) | Gas / Propane | Remote start, transfer switch ready, CO shutdown |
| Westinghouse 14500 Peak / 11,500 Run (Gas) | 14,500 peak / 11,500 running | Gas / Propane | Long run time, transfer switch ready, RV and standard outlets |
| WEN 14,500-Watt TF1450 | 14,500 surge / 11,500 running (gas) | Gas / Propane / Natural Gas | CO watchdog, transfer switch compatibility |
| DuroMax XP13000HXT | 13,000 watts (gas/propane/natural gas) | Gas / Propane / Natural Gas | CO alert, heavy-duty 500cc engine, tri-fuel option |
| DuroMax XP12000HX | 12,000 watts (gas/propane) | Gas / Propane | CO alert, copper windings, transfer switch ready |
Westinghouse 13500 Peak / 10500 Running Dual Fuel Generator

This Westinghouse model delivers strong peak output with solid running watts on gasoline and propane. It includes remote electric start with a key fob, and it is transfer switch ready for seamless standby power integration. The 9.5-gallon tank supports extended runtimes, with a fuel gauge to monitor consumption. Safety features include a CO shutdown sensor and a durable 500cc Westinghouse engine. Outlets are shielded with rubber covers for weather resilience, while the digital hour meter helps schedule maintenance.
Westinghouse 14500 Peak / 11,500 Running Dual Fuel Generator

This larger Westinghouse option targets bigger homes or more demanding loads, offering 14,500 peak watts and 11,500 running watts on gasoline, with strong propane performance as well. It provides up to 19 hours of runtime on a full 9.5-gallon tank and extends fuel life with a built-in gauge. The unit includes multiple 120V and 240V outlets and a dedicated transfer switch connection, making it suitable for full-home power backup with a robust engine and safety features for prolonged use.
Westinghouse 12500 Watt Dual Fuel Portable Generator

With 9,500 running watts on gasoline and 12,500 peak watts, this model balances portability with ample power. It includes a remote start option, a digital hour meter, and a voltage display for real-time monitoring. The unit is designed for transfer switch compatibility and full outdoor duty with a durable engine. Its coated outlets and safety features help protect against weather and accidental contact during outages.
WEN 14,500-Watt Tri-Fuel Generator (TF1450X)

The WEN TF1450X offers versatile fuel management by switching among gasoline, propane, and natural gas with a simple dial. It supports 120V/240V outputs and is designed for straightforward transfer switch integration. The CO watchdog sensor adds a layer of safety by automatically shutting down if elevated carbon monoxide levels are detected. This model is well-suited for mid-sized homes seeking flexible fuel options and reliable performance during outages.
WEN 14500-Watt Tri-Fuel Generator With Electric Start

This WEN model matches the needs of users seeking a tri-fuel option with electric start and wheel kit for portability. It switches between gasoline, propane, and natural gas, delivering solid surge and running watts on each fuel. It is designed for transfer switch readiness and emergency backup, with practical safety features and a compact design for storage and transport during storms or outages.
DuroMax XP12000HX Dual Fuel Portable Generator

Equipped with dual-fuel capability and a robust 457cc engine, this model provides 12,000 watts on gasoline or propane. It features a CO alert to protect against carbon monoxide exposure and is designed with copper windings for durability. Transfer switch readiness and multiple receptacles support reliable standby power for homes and RV setups, while the tri-fuel flexibility supports various fueling scenarios during emergencies.
Buying Guide: Key Purchase Considerations
When shopping for dual fuel generators that can run on natural gas, consider the following factors to ensure the unit meets your needs:
- Power output and load needs: Estimate your essential loads (refrigeration, sump pump, heating, lighting) and select a model with sufficient peak and running watts for natural gas and other fuels.
- Fuel flexibility and availability: Natural gas offers convenience but may require professional installation for gas lines. Propane and gasoline provide portability; tri-fuel models maximize fuel options.
- Starting method: Remote electric start and key fob ease operation during adverse weather. Manual recoil starts offer redundancy.
- Transfer switch compatibility: Ensure the generator is transfer switch ready or compatible with your existing standby panel for seamless automatic switching.
- Runtime and fuel capacity: Larger tanks or efficient engines extend runtime on gasoline or propane. For natural gas, consider the available gas pressure and line capacity.
- Safety features: CO sensors, automatic shutdown, enclosed mufflers, and weather-resistant outlets protect users and equipment.
- Maintenance and durability: Look for cast iron sleeves, copper windings, and hour meters to simplify upkeep and extend life.
- Portability vs. durability: Wheels and handles aid mobility, but heavier models may require a dedicated storage space and safe handling.
- Warranty and service availability: Check manufacturer support networks and local service options for timely maintenance.
These considerations help users compare models for home backup, RV use, or remote worksites where natural gas supplies may be more convenient than liquid fuels. The listed products provide a range of wattage, fuel options, and safety features to support reliable emergency power without sacrificing portability or control.