Choosing a high-capacity generator ensures your home stays powered during outages. This guide focuses on 18,000-watt class models and strong 28,000-watt options that suit larger homes, workshops, or remote job sites. We highlight key features, fuel options, and safety tools to help you compare reliability, runtime, and compatibility with transfer switches.
Summary of selected products
- Westinghouse 18000 Peak Watt Tri-Fuel Home Backup Portable Generator
- Westinghouse 18000 Peak Watt Dual Fuel Home Backup Portable Generator
- Westinghouse 18000 Peak Watt Home Backup Portable Generator with 30A & 50A Outlets
- Westinghouse 28000 Peak Watt Tri-Fuel Home Backup Portable Generator
- DuroMax XP15000HXT Tri Fuel Portable Home Power Backup Generator
Westinghouse Tri-Fuel 18,000 Peak Watt Generator
This tri-fuel unit delivers 18,000 peak watts on gasoline for rapid power restoration and 13,000 running watts when using propane, with 11,600 running watts on natural gas. It includes electric and remote start via a key fob, plus transfer switch readiness. The 10.57-gallon fuel capacity supports long runtimes, and the CO shutdown adds an important safety layer. It features two GFCI 120V outlets, a transfer switch ready outlet, and an RV-ready 120/240V outlet. A digital hour meter helps schedule maintenance.
Westinghouse 18,000 Peak Watt Dual Fuel Generator
This dual-fuel model runs on gasoline or propane, delivering 18,000 peak watts on gasoline and 16,000 peak watts on propane. It offers electric start and a remote start with a key fob, plus an 11-hour runtime on a 10.5-gallon tank. It provides two 120V GFCI outlets, an additional 120V outlet, and RV-ready/transfer switch-ready configurations for versatile setup. The engine is a robust 713cc OHV V-twin with an automatic low-oil shutdown and a digital hour meter for maintenance tracking.
Westinghouse 18,000 Peak Watt Home Backup with 30A & 50A
This 18,000-watt unit includes two GFCI 120V outlets, a 120V L5-30R, a transfer switch ready L14-30R, and an RV-ready 14–50R. It has dual 5V USB ports and a robust Westinghouse engine with a cast-iron sleeve, automatic low-oil shutdown, CO sensor, and a digital hour meter. The design emphasizes safety and versatility for larger households or multiple-appliance loads during outages.
Westinghouse 28,000 Peak Watt Tri-Fuel Generator
Although higher in output, this tri-fuel powerhouse offers up to 28,000 peak watts gasoline and 25,200 peak watts propane, with 18,000 running watts on gasoline and 16,000 running watts on propane. It supports extensive outlets, including four GFCI 120V, two 50A 120/240V outlets, plus multiple L14-30R and L5-30R configurations. A remote start, automatic low-oil shutdown, and a digital readout for hours, volts, and frequency help manage long outages. It’s geared toward larger properties needing substantial, scalable power.
DuroMax XP15000HXT Tri Fuel Generator
The XP15000HXT delivers 15,000 watts with tri-fuel capability (gas, propane, natural gas) and a CO alert feature for safety. Powered by a 500cc OHV engine, it prioritizes flexibility and resilience in extended outages. The unit supports essential home backup needs and offers multiple outlets suitable for feeding home circuits via a transfer switch. The CO alert helps monitor indoor air quality during operation, providing a safer backup option for families.
Buying Guide: Key Purchase Considerations
Fuel type and availability: Tri-fuel models maximize flexibility during weather disruptions. Propane and natural gas can be easier to store and access than gasoline. However, gasoline generally provides higher peak outputs and faster restoration of power.
Power output and runtime: For larger homes, aim for units with 18,000 peak watts or more and 11–13 hours of runtime on a full tank at moderate load. For bigger loads, consider higher wattage models such as 28,000 peak watts, which can support more circuits simultaneously.
Outlets and transfer switch readiness: Ensure the generator has the outlets you need (GFCI 120V, RV outlets, 30A/50A options) and is transfer switch ready or compatible with interlock kits. This simplifies safe connection to your home electrical system.
Starting method and convenience: Electric start with remote key fob is a major convenience during emergencies. A digital hour meter helps plan maintenance and extend engine life.
Safety features: CO sensor shutdowns, automatic low-oil shutdown, and rubber outlet covers reduce risks and protect sensitive electronics from surges or improper operation.
Engine and build quality: Look for a heavy-duty OHV engine with a cast-iron sleeve and a robust frame. These features improve longevity and resilience under frequent use and transport.
Noise and portability: Consider the decibel level and the weight when you plan to move the unit around a property. Look for wheels and a sturdy handle design for easier maneuverability.
Warranty and support: Check manufacturer warranties and available service networks. A solid warranty reduces ownership risk when facing outages or maintenance needs.