Best 3-Phase Natural Gas Generator Options for Home Backup
If you need a reliable 3-phase natural gas generator for a home or small business backup, this guide highlights top tri-fuel and natural-gas-capable units that balance power, run time, and safety. These models are best for homeowners seeking steady tri-fuel flexibility, emergency preparedness, and transfer-switch readiness. The following brief table compares five strong choices to help you pick quickly.
| Product | Peak Watts | Running Watts (Gas) | Fuel Options | Best For |
|---|---|---|---|---|
| Westinghouse 14500 Peak Watt Tri-Fuel | 14,500 | 11,500 (Gas) | Gas, Propane, Natural Gas | Larger homes, longer runtimes |
| Generac 12,500 Starting Watt Tri-Fuel | 12,500 | 9,500 (Gas) | Gas, Propane, Natural Gas | Balanced power and runtime |
| Westinghouse 13500 Peak Watt Tri-Fuel | 13,500 | 10,500 (Gas) | Gas, Propane, Natural Gas | Compact backup with strong output |
| DuroMax XP13000HXT | 13,000 | 13,000 (Gas) | Gas, Propane, Natural Gas | High power in tri-fuel format |
| DuroStar DS13000MXT | 13,000 | 13,000 (Gas) | Gas, Propane, Natural Gas | Full home backup and transfer capability |
Note: Each unit described below supports tri-fuel operation or natural-gas compatibility, with features aimed at reliable startup, safety interlocks, and transfer-switch readiness. Consider your home size, expected runtime, and whether you need electric start or remote operation when selecting a generator.
Westinghouse 14500 Peak Watt Tri-Fuel Generator
Best for: Large homes needing substantial peak power with flexible fuel options. This unit delivers 14,500 peak watts on gasoline, 13,500 on propane, and 12,000 on natural gas, making it suitable for demanding loads during outages.
- Gasoline: 11,500 running watts
- Propane: 13,500 peak / 10,500 running watts
- Natural gas: 12,000 peak / 9,500 running watts
Why selected: A heavy-duty 550cc Westinghouse engine with a durable cast-iron sleeve supports long operation. It runs up to 19 hours on a large 9.5-gallon tank and offers built-in fuel gauge for easy monitoring.
Caution: Runtime and performance can vary with load; natural-gas performance may differ from liquid fuels under real-world conditions. Consider a large fuel source for extended outages.
Generac 12,500 Starting Watt Tri-Fuel
Best for: Emergency backup with user-friendly electric start and CO sensing. This Generac model provides essential power with a straightforward fuel selector dial across gasoline, propane, and natural gas.
- Starting watts: 12,500; Running watts: 9,500 (gas)
- COsense carbon monoxide detection
- 7.5-hour runtime at half load on gasoline with 50% load options for other fuels
Why selected: Electric start simplifies operation in stressful outages, and the multi-fuel capability supports flexibility when fuel availability changes. It is designed for home backup and basic whole-house loads.
Caution: Slightly longer startup time may occur in cold weather; ensure the battery is charged for reliable electric start in winter conditions.
Westinghouse 13500 Peak Watt Tri-Fuel
Best for: Compact backup power with strong output and multiple outlets for home needs. It provides 13,500 peak watts and 10,500 running watts on gasoline, with similarly strong figures on propane and natural gas.
- Remote start with key fob; electric and recoil start
- 19 hours of runtime on a 9.5-gallon tank
- Outlets include GFCI 120V, transfer-switch capability, and RV-ready options
Why selected: A robust 500cc Westinghouse engine with automatic low-oil shutdown and CO monitoring adds safety. Digital hour meter helps track maintenance and runtime.
Caution: Some models may require compatible transfer switches for full home integration; verify compatibility with your panel before installation.
DuroMax XP13000HXT Tri Fuel Generator
Best for: Power-rich tri-fuel operation with CO alert and full transfer-switch readiness. This model supports heavy loads during outages and is suitable for mid-sized homes.
- Power: 13,000 watts (gas); compatible with propane and natural gas
- 500cc OHV engine
- CO Alert system for added safety
Why selected: The CO alert adds protection during operation, and the tri-fuel design offers fuel flexibility when markets or supplies shift. It is a solid option for entire-home reliability.
Caution: Heavier unit; ensure your installation site accommodates its weight and clearance requirements.
DuroStar DS13000MXT Tri Fuel
Best for: Full home backup with diverse outlets and transfer-switch readiness. It parks 13,000 watts and supports gasoline, propane, and natural gas.
- Tri-Fuel Technology with fuel selector
- Push-button start and wide array of outlets
- Transfer-switch-ready with 50-amp RV and 30-amp options
Why selected: This unit provides a broad outlet set and easy control for complex home electrical systems, making it a practical choice for whole-house protection during outages.
Caution: Installation may require professional electrical work to ensure proper transfer switch integration and compliance with local codes.
Westinghouse 12500 Peak Watt Tri-Fuel
Best for: Moderate-size homes needing dependable tri-fuel performance with remote start. It delivers balanced power across fuel options and reliable runtime.
- 12500 peak watts; 9500 running watts (gas)
- CO shutdown, digital hour meter
- Transfer-switch-ready with RV and standard household outlets
Why selected: The dual capability of electric and recoil start, plus a robust 457cc engine, makes it a versatile choice for varied outages and loads. It’s a compact option with strong performance.
Caution: Natural gas performance may depend on gas pressure and line quality; verify gas supply compatibility before install.
Buying Guide: Key Considerations For 3-Phase Natural Gas Generators
- Fuel flexibility: Tri-fuel or natural-gas-capable units give you resilience when fuel is scarce or expensive. Consider whether propane, natural gas, or gasoline is most available in your area.
- Power needs: Determine your essential circuits and total wattage. Select a unit with peak watts well above your anticipated surge to avoid overloads.
- Transfer-switch readiness: If you want seamless whole-home power, choose models with transfer-switch-ready outlets and compatible hardware for your panel.
- Starting method: Electric start offers convenience, especially in cold conditions, but ensure the battery system is reliable. Recoil start is a solid backup option.
- Runtime and fuel capacity: Larger fuel tanks yield longer runtimes. Consider your typical outage duration and whether you need daytime or overnight operation.
- Safety features: Look for CO sensors, automatic shutdown on low oil, and rubber-covered receptacles for weather resistance and safety.
- Noise and footprint: Consider the generator’s noise output and the space you have for installation, including ventilation and clearance requirements.
Frequently Asked Questions
- What does tri-fuel mean? It means the generator can run on gasoline, propane, or natural gas, offering fuel flexibility during outages.
- Do I need a transfer switch for whole-house backup? For permanent whole-house backup, a transfer switch is typically required to safely isolate the home from the grid and prevent back-feeding.
- Is electric start better than recoil start? Electric start is more convenient, especially in cold weather, but recoil start works without a battery and is a reliable backup.
- How do I choose the right wattage? Compare peak watts (surge) for startup loads and running watts (continuous) for ongoing appliances. Add up the essential loads to pick a unit with sufficient capacity.
- What safety features matter most? Automatic low-oil shutdown, CO sensors, and properly rated outlets reduce risk during operation and outages.
- Can natural gas generators run indefinitely? They can run as long as there is a continuous fuel supply; plan for fuel line capacity, regulator sizing, and maintenance intervals.