Best Diesel and Natural Gas Generators for Home Backup

Choosing a reliable generator that can run on multiple fuels—like diesel and natural gas—helps ensure power during outages. The following selects highlight tri‑fuel options that balance wattage, fuel flexibility, and safety features for American homes. Each model supports transfer switches or interlock kits, improving compatibility with home electrical panels. Read on to compare top choices and pick the right backup power solution for your needs.

Summary of chosen products

Product Fuel Types Peak/Running Watts Special Feature
WEN TF1450X 14,500-Watt Tri-Fuel Generator Gas, Propane, Natural Gas 13,500 / 11,500 (Gas); 12,500 / 10,300 (Propane); 10,500 / 8,750 (Natural Gas) CO Watchdog shutdown, Electric Start, Transfer-Switch Ready
Westinghouse 13500 Peak Watt Tri-Fuel Gas, Propane, Natural Gas 13,500 / 10,500 (Gas); 12,500 / 9,500 (Propane); 10,000 / 8,500 (Natural Gas) Remote Start, 19 hr runtime, multiple outlets
Westinghouse iGen 11,000TFc Gas, Propane, Natural Gas 11,000 / 9,000+ (Gas); 10,000 / 8,100 (Propane); 8,800 / 7,200 (Natural Gas) Inverter, 50A outlet, CO Sensor
DuroMax XP13000HXT Gas, Propane, Natural Gas 13,000 (Gas); 12,000 (Propane); 10,000 (Natural Gas) CO Alert, 500cc OHV engine
Westinghouse 12500 Peak Watt Tri-Fuel Gas, Propane, Natural Gas 12,500 / 9,500 (Gas); 11,200 / 8,500 (Propane); 9,500 / 7,500 (Natural Gas) Remote start, long runtime, multiple outlets

WEN 14,500-Watt Tri-Fuel Generator

WEN TF1450X image

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The WEN TF1450X is a versatile tri‑fuel model with a simple fuel source switch and both 120V and 240V outputs, making it suitable for standard home circuits and transfer switches. It includes a CO shutdown sensor to address carbon monoxide safety when operating indoors or in enclosed spaces and ensures automatic shutdown during hazardous CO levels. This generator supports emergency backup for essential circuits and appliances.

Key features include a straightforward selection dial to change fuel types, a high surge wattage on gasoline, and durable construction suitable for frequent outages. The unit is designed for wheel kit mobility and compatibility with common transfer switch configurations, helping homeowners manage power during storms or outages.

Westinghouse 13500 Peak Watt Tri‑Fuel

Westinghouse 13500 Tri-Fuel image

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This Westinghouse model delivers robust peak and running watts across all three fuels, with remote electric start and a digital hour meter. A heavy-duty engine and cast iron sleeve promise longevity, while dual-purpose outlets and transfer switch readiness support whole-house backup. The CO safety features and automatic low-oil shutdown provide safety and reliability for extended outages. With long run times on larger tanks, it serves as a strong central power source during emergencies.

Westinghouse iGen11000TFc Tri‑Fuel Inverter

Westinghouse iGen11000TFc image

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The iGen11000TFc blends inverter efficiency with tri‑fuel flexibility and whole-home backup capabilities. Inverter technology reduces engine speed during light loads to save fuel and minimize noise, while still delivering clean power suitable for sensitive electronics. It includes a 50A outlet category for major home circuits and transfer switch compatibility. CO sensors and rubber-covered outlets add safety and durability for outdoor use.

DuroMax XP13000HXT Tri Fuel Generator

DuroMax XP13000HXT image

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With 13,000 watts on gasoline, this DuroMax unit emphasizes a robust 500cc OHV engine and Tri Fuel versatility with CO alert. The CO Shield helps detect dangerous fumes, while the dual-fuel capability provides fuel flexibility during outages. The generator is designed for heavy-duty operation and long runtimes, making it a practical choice for larger homes or cabins that require flexible fuel options when the grid is down.

Westinghouse 12500 Peak Watt Tri‑Fuel

Westinghouse 12500 Tri-Fuel image

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This Westinghouse model delivers a balanced combination of peak and running watts across gas, propane, and natural gas. Remote start simplifies operation after outages, while multiple outlets and a transfer switch-ready configuration support safe integration with home electrical systems. A durable engine with a cast iron sleeve enhances longevity, and the included digital hour meter helps track maintenance needs for long-term reliability.

Buying Guide

  • Fuel flexibility: Tri‑fuel models offer gasoline, propane, and natural gas compatibility. Consider which fuels are readily available in your area and how often you expect to refuel or convert.
  • Power needs: Match continuous running watts to essential circuits (refrigerator, well pump, lights) and peak watts to handle startup surges of appliances like air conditioners or sump pumps.
  • Transfer switch readiness: For whole-house backup, ensure the generator is listed as transfer switch ready or interlock kit compatible with your main panel.
  • Safety features: CO sensors, automatic shutdown, and proper enclosure design reduce risk during operation. Look for rubber-covered outlets for weather protection.
  • Fuel availability and efficiency: Inverter-based tri‑fuel units offer fuel savings and quieter operation, which is beneficial for residential use in neighborhoods.
  • Runtime and tank size: Larger tanks extend runtime but add weight and size. If you expect extended outages, prioritize models with longer run times on the fuel you use most.
  • Maintenance: Digital hour meters and easy access for oil checks help with routine maintenance. Consider engines with durable components like cast iron sleeves for longevity.
  • Portability vs. standby: Open-frame generators are typically more portable, while larger tri‑fuel units may require a dedicated space and secure mounting, especially in windy areas.

When evaluating options, create a prioritized checklist based on your home size, climate, fuel access, and panel compatibility. For homes with sensitive electronics, inverter-based tri‑fuel models offer cleaner power with lower total harmonic distortion. If you need high overall power with long runtimes for extended outages, consider larger wattage units with robust fuel capacity and CO safety features.