Best Diesel and Propane Generators for Home Backup
The following article highlights top triple- and dual-fuel generators that run on gasoline and propane (with some models offering natural gas). Designed for reliable home backup and portable power, these units feature remote starts, transfer-switch readiness, long run times, and durable builds. Read on to compare performance, outlets, and fuel versatility across five leading options from Westinghouse, WEN, and Generac.
Product Summary
- Westinghouse 14500 Peak Watt Tri-Fuel: 14,500 peak watts (gas), 13,500 (propane), 12,000 (natural gas); heavy-duty 550cc engine; up to 19 hours on gasoline, up to 7 hours on a 20 lb propane tank.
- Westinghouse 12500 Watt Dual Fuel: 12,500 peak (gas), 11,200 peak (propane); remote start; up to 12 hours on a 6.6 gallon tank; multiple outlets including transfer switch ready.
- Westinghouse 28000 Peak Watt Tri-Fuel: 28,000 peak (gas), 25,200 (propane), 22,400 (natural gas); long run times on a large 17.2 gallon tank; multiple outlets and transfer-switch readiness.
- WEN 5,600-Watt Dual Fuel Portable Generator: 5,600 peak (gas), 5,000 peak (propane); electric start; CO watchdog for safety.
- Westinghouse 12500 Peak Watt Dual Fuel with CO Sensor: 12,500 peak (gas), 11,200 (propane); CO shutdown and hour meter; transfer switch capabilities.
Westinghouse 14500 Peak Watt Tri-Fuel Home Backup
Powerful triple-fuel performance makes this Westinghouse model suitable for larger homes and demanding portable power needs. It delivers 14,500 peak watts on gasoline, 13,500 peak watts on propane, and 12,000 peak watts on natural gas, with corresponding running watts. The heavy-duty 550cc Westinghouse engine uses a cast-iron sleeve for durability. A built-in fuel gauge helps monitor remaining capacity, and significant runtime is possible: up to 19 hours on a full 9.5-gallon fuel tank, or about 7 hours on a standard 20-pound propane tank. This unit is designed for transfer-switch readiness and remote electric starting convenience.
Westinghouse 12500 Watt Dual Fuel Backup
This dual-fuel Westinghouse generator provides a versatile balance of power and control. It offers 12,500 peak watts on gasoline and 11,200 peak watts on propane, with running watts aligned to fuel type. Remote electric start via included key fob adds convenience, while a digital hour meter and VFT (voltage, frequency, and total hours) readouts support maintenance. Run times reach up to 12 hours on a 6.6-gallon tank, and it includes multiple outlets suitable for household loads and transfer-switch compatibility, enhancing home backup reliability.
Westinghouse 28000 Peak Watt Tri-Fuel
Designed for substantial back-up power, this tri-fuel unit delivers up to 28,000 peak watts on gasoline, 25,200 on propane, and 22,400 on natural gas. It features a robust 999 cc Westinghouse V-Twin OHV engine with a cast-iron sleeve and automatic low-oil shutdown for protection. The model includes reinforced steel handles, a digital readout for run hours and runtime data, and a comprehensive set of outlets, including multiple 120/240V receptacles and RV-ready options. It is transfer-switch ready for seamless home integration and long run times on a large 17.2-gallon tank.
WEN 5,600-Watt Dual Fuel With Wheel Kit
WEN’s 5,600-watt dual fuel model provides practical power for medium loads. It runs on gasoline (surge watts up to 5,600 and rated watts around 4,500) and propane (surge up to 5,000 and rated around 4,050). An electric start simplifies operation, and the unit includes a CO watchdog to enhance safety by automatically shutting down if unsafe carbon monoxide levels are detected. This makes it a versatile option for essential home backup and portable use with a wheel kit for easy transport.
Westinghouse 12500 Peak Watt Dual Fuel With CO Sensor
This dual-fuel unit provides strong performance with 12,500 peak watts on gasoline and 11,200 peak watts on propane. It includes a remote start with key fob, an hour meter, and a CO sensor for automatic shutdown to protect occupants. The 6.6-gallon fuel tank offers up to 12 hours of runtime, and the unit is configured with multiple outlets, including transfer-switch-ready receptacles, rubber-covered outlets for safety, and a robust 457cc Westinghouse OHV engine with a cast-iron sleeve. It emphasizes safety and monitoring for reliable home power.
Buying Guide: Key Considerations For Diesel- And Propane-Fueled Generators
Fuel type and availability influence long-term reliability during outages. Dual- and tri-fuel designs maximize flexibility, letting you switch between gasoline, propane, and natural gas to suit supply and cost. When evaluating models, consider peak vs running watts to match your essential circuits and appliances. Remote electric start and transfer-switch readiness simplify operation during emergencies.
Engine size and durability impact runtime and maintenance. Cast-iron sleeves and low-oil shutdown features extend the life of heavy-duty engines. Fuel tank capacity directly affects endurance; larger tanks enable longer runtimes between refills, which is critical during extended outages.
Outlet configurations should align with your home’s needs. Look for multiple 120V and 240V outlets, RV-ready receptacles, and transfer-switch compatibility. Safety features such as rubber outlet covers and CO sensors are important for indoor use and proximity to living spaces.
Portability versus standby designs: Portable models offer mobility and lower upfront costs, while larger tri- and dual-fuel units can serve as standby power for whole-house coverage when paired with a transfer switch. Evaluate noise ratings, deprecation schedules, and warranty terms to align with long-term expectations.