Best Diesel and Propane Generators for Reliable Home Backup Power
Finding a reliable generator that runs on diesel or propane can provide peace of mind during outages or on job sites. Below is a summary table outlining the key features of top diesel and propane generators available on Amazon, helping you compare peak power, fuel versatility, and runtime at a glance.
| Generator | Fuel Types | Peak Watts | Running Watts | Runtime |
|---|---|---|---|---|
| Westinghouse 14500 Peak Tri-Fuel | Gas, Propane, Natural Gas | 14,500 (Gasoline), 13,500 (Propane) | 11,500 (Gasoline), 10,500 (Propane) | Up to 19 hours on 9.5 gal. (Gas) |
| DuroMax XP13000EH Dual Fuel | Gas, Propane | 13,000 | — | — |
| WEN 14500-Watt Tri-Fuel | Gas, Propane, Natural Gas | 14,500 (Gas), 12,500 (Propane) | 11,500 (Gas), 10,300 (Propane) | — |
| Westinghouse 12500 Peak Tri-Fuel | Gas, Propane, Natural Gas | 12,500 (Gas), 11,200 (Propane) | 9,500 (Gas), 8,500 (Propane) | Up to 12 hours on 6.6 gal. |
| Westinghouse 12500 Watt Dual Fuel | Gas, Propane | 12,500 (Gas), 11,200 (Propane) | 9,500 (Gas), 8,500 (Propane) | Up to 12 hours on 6.6 gal. |
Westinghouse 14500 Peak Watt Tri-Fuel Generator

This portable generator is built for larger homes and portable power needs, offering a robust 14,500 peak watts from gasoline and respectable output on propane and natural gas. It uses a heavy-duty 550cc 4-stroke OHV engine with a durable cast iron sleeve, ensuring longevity under load.
The unit provides up to 19 hours of runtime on a full 9.5-gallon gas fuel tank and about 7 hours using a 20 lb. propane tank. It features remote electric start, transfer switch readiness, and the ability to operate on three different fuel types for convenience and flexibility.
DuroMax XP13000EH 13,000-Watt Dual Fuel Generator

Providing 13,000 watts of power, the DuroMax XP13000EH is designed to power a whole home during outages. This dual-fuel generator runs smoothly on gasoline or propane and is engineered for durability with a robust DuroMax engine core.
It accommodates transfer switch setups, electric start, and RV compatibility, appealing to those needing reliable emergency backup or portable power solutions. DuroMax is recognized for its pioneering dual-fuel technology ensuring versatility.
WEN 14500-Watt Tri-Fuel Generator TF1450

The WEN TF1450 offers a practical tri-fuel generator option with peak watts of 14,500 on gasoline and easy fuel switching via a selection dial. It operates both 120V and 240V outputs, ideal for home transfer switches or emergency power needs.
The electric start powers its reliable 500cc 4-stroke OHV engine, simplifying startup during stressful conditions. This generator boasts excellent surge and running wattage for gas, propane, and natural gas fuels supporting multiple device types safely.
Westinghouse 12500 Peak Watt Tri-Fuel Generator

This Westinghouse model offers a solid balance between power and runtime, with 12,500 peak watts on gasoline and remote electric start using the included key fob. It has a compact 6.6-gallon fuel tank promising up to 12 hours of continuous use.
Safety and convenience features include GFCI outlets with rubber covers, transfer switch readiness, and an automatic low-oil shutdown system. Its 457cc engine features a cast iron sleeve and digital hour meter for maintenance tracking.
Westinghouse 12500 Watt Dual Fuel Home Backup Generator

The Westinghouse 12500 Watt Dual Fuel is similar in performance to the tri-fuel model but runs exclusively on gasoline and propane. It also offers remote start with key fob control and up to 12 hours runtime on a 6.6-gallon tank.
Additional amenities include a VFT digital display for real-time voltage, frequency, and lifetime hour updates. Its 457cc engine is designed with longevity in mind and integrates automatic low oil shutdown to protect the unit.
Buying Guide For Diesel And Propane Generators
Fuel Type Options and Availability
Selecting between diesel, propane, natural gas, or gasoline is crucial. Tri-fuel models offer greater flexibility but may cost more. Propane and natural gas burn cleaner than gasoline but require an external fuel source or tank. Consider fuel accessibility during outages.
Power Output: Peak And Running Watts
Peak wattage indicates the maximum burst power (for starting motors), while running watts are the sustained output. Calculate the total wattage of essential appliances and tools you plan to power simultaneously to choose an appropriately rated generator.
Runtime And Fuel Tank Capacity
Longer runtimes reduce refueling frequency during emergency use. Larger fuel tanks extend operation time but increase generator weight and size. Review the runtime on different fuels, especially propane, as tank sizes vary widely.
Portability And Size
If mobility is important for camping or job sites, prioritize generators with wheels, handles, and manageable weight. Home backup generators tend to be heavier but prioritize fuel capacity and power output.
Starting Mechanisms
Electric start mechanisms offer convenience over traditional recoil pull starts, especially in emergencies. Remote start features allow operating the generator from a distance, enhancing user experience and safety.
Outlet Types And Safety Features
Check for various outlets to power household devices, RVs, or appliances. Models with GFCI protection, safety covers, and low oil shutdown increase safe operation. Transfer switch compatibility is essential for integration with home electrical systems.
Durability And Engine Quality
Engines with cast iron sleeves and OHV (overhead valve) design promise longevity and better performance. Reviews and brand reputation also help evaluate overall reliability.