Best Westinghouse 18000 Watt Tri Fuel Generator in 2025
Updated on July 2025
#1
Recommended
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- Gasoline: 28,000 peak watts, 20,000 running watts; Propane: 25,200 peak watts, 18,000 running watts; Natural gas: 22,400 peak watts, 16,000 running watts; 17.2-gal tank provides up to 13 hours of runtime at 25% load; suitable for larger homes as a backup power source.
- Powered by a robust 999cc Westinghouse V-Twin OHV engine with a cast-iron sleeve; features include reinforced steel handles, automatic low-oil shutdown, low idle mode, and a digital readout for runtime, voltage, and frequency.
- Equipped with various outlets: two 120/240V 14-50R 50A, two 120/240V L14-30R 30A, one 120V L5-30R 30A, and four GFCI 120V 5–20R 20A outlets; all outlets have rubber covers; includes oil, funnel, and setup guide.
- 125A 240V AC lug connector allows licensed electricians to hardwire the generator directly to homes, ensuring high output for whole-home backup without the limitations of cords or outlets.
- Features large, never-flat wheels and foldable steel handles for easy transport; combines the power of a stationary unit with the convenience of portability for home or jobsite use.
- All Westinghouse generators are functionally tested; may contain minimal residual oil or fuel odor; EPA-compliant and come with a 3-year limited warranty for parts and service.
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- Gasoline: 28,000 peak watts, 20,000 running watts; Propane: 25,200 peak watts, 18,000 running watts; Natural gas: 22,400 peak watts, 16,000 running watts; 17.2-gal tank provides up to 13 hours of runtime at 25% load; suitable for larger homes as a backup power source.
- Powered by a robust 999cc Westinghouse V-Twin OHV engine with a cast-iron sleeve; features include reinforced steel handles, automatic low-oil shutdown, low idle mode, and a digital readout for runtime, voltage, and frequency.
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#2
Value for Money
11% Off
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- 14500 running watts and 18000 peak watts on gasoline; 13000 running watts and 16000 peak watts on propane; 11600 running watts and 14400 peak watts on natural gas; remote start capability with included key fob; operates for up to 12 hours on a 10.57-gallon fuel tank with gauge
- Includes two GFCI 120V 5–20R outlets, one transfer switch ready 120V L14-30R outlet, and one RV ready 120/240V 14–50R outlet; all outlets feature rubber covers for safety
- Equipped with a heavy-duty 713cc V-Twin 4-stroke engine with a durable cast iron sleeve; includes automatic low oil and CO shutdown features, and a digital hour meter
- Plug-and-play setup with remote start key fob, 12V battery charger, oil, oil funnel, tool kit, and user manual included for easy initial use
- Functionally tested at the factory; EPA compliant; includes a 3-year limited service, labor, and parts coverage with nationwide customer service
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- 14500 running watts and 18000 peak watts on gasoline; 13000 running watts and 16000 peak watts on propane; 11600 running watts and 14400 peak watts on natural gas; remote start capability with included key fob; operates for up to 12 hours on a 10.57-gallon fuel tank with gauge
- Includes two GFCI 120V 5–20R outlets, one transfer switch ready 120V L14-30R outlet, and one RV ready 120/240V 14–50R outlet; all outlets feature rubber covers for safety
- Equipped with a heavy-duty 713cc V-Twin 4-stroke engine with a durable cast iron sleeve; includes automatic low oil and CO shutdown features, and a digital hour meter
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#3
10% Off
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- Suitable as a backup power supply for large homes or for portable power needs
- Offers peak wattage of 14,500 (gasoline) and 13,500 (propane), with running wattage of 11,500 (gasoline) and 10,500 (propane)
- Can operate for up to 19 hours on a 9.5-gallon fuel tank; about 7 hours on a 20 lb. propane tank
- Equipped with a robust 550cc 4-Stroke OHV engine featuring a durable cast iron sleeve
- Tested for functionality in the factory, may have residual oil or fuel odor; complies with EPA standards; includes a 3-year limited service, labor, and parts warranty with nationwide customer service
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- Suitable as a backup power supply for large homes or for portable power needs
- Offers peak wattage of 14,500 (gasoline) and 13,500 (propane), with running wattage of 11,500 (gasoline) and 10,500 (propane)
- Can operate for up to 19 hours on a 9.5-gallon fuel tank; about 7 hours on a 20 lb. propane tank
- Equipped with a robust 550cc 4-Stroke OHV engine featuring a durable cast iron sleeve
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#4
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- 13500 peak watts and 10500 running watts for gasoline; 12500 peak watts and 9500 running watts for propane; 10000 peak watts and 8500 running watts for natural gas; remote and electric start with included key fob; operates for up to 19 hours on a 9.5-gallon fuel tank with gauge
- Includes two GFCI 120V 5–20R standard household receptacles, one transfer switch ready 120V L14-30R receptacle, and one RV-ready 120/240V 14–50R receptacle; all outlets have rubber covers for safety
- Powered by a heavy-duty 500cc Westinghouse 4-stroke OHV engine with a cast iron sleeve; features automatic low oil and carbon monoxide (CO) shutdown, along with a digital hour meter
- Ready to use with included remote start key fob, 12V battery charger, oil and funnel, tool kit, and user manual for easy setup
- Functionally tested in the factory; may have residual oil or fuel odor; EPA compliant; covered by a 3-year limited service, labor, and parts warranty, plus nationwide customer service
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- 13500 peak watts and 10500 running watts for gasoline; 12500 peak watts and 9500 running watts for propane; 10000 peak watts and 8500 running watts for natural gas; remote and electric start with included key fob; operates for up to 19 hours on a 9.5-gallon fuel tank with gauge
- Includes two GFCI 120V 5–20R standard household receptacles, one transfer switch ready 120V L14-30R receptacle, and one RV-ready 120/240V 14–50R receptacle; all outlets have rubber covers for safety
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#5
13% Off
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- 12500 peak watts and 9500 running watts on gasoline; 11200 peak watts and 8500 running watts on propane; 9500 peak watts and 7500 running watts on natural gas; remote start capability with key fob; electric and recoil start options; up to 12 hours runtime on a 6.6-gallon tank with fuel gauge
- Includes two GFCI 120V household outlets, one transfer switch ready outlet, and one RV ready outlet; all outlets feature rubber covers for safety
- Powered by a durable 457cc 4-stroke OHV engine with cast iron sleeve; features automatic low oil shutdown and carbon monoxide monitoring
- Comes ready to use with remote start fob, 12V battery charger, oil and funnel, tool kit, and user manual; minimal assembly required
- Factory tested for functionality; EPA compliant; includes a 3-year limited service warranty and nationwide customer support
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- 12500 peak watts and 9500 running watts on gasoline; 11200 peak watts and 8500 running watts on propane; 9500 peak watts and 7500 running watts on natural gas; remote start capability with key fob; electric and recoil start options; up to 12 hours runtime on a 6.6-gallon tank with fuel gauge
- Includes two GFCI 120V household outlets, one transfer switch ready outlet, and one RV ready outlet; all outlets feature rubber covers for safety
- Powered by a durable 457cc 4-stroke OHV engine with cast iron sleeve; features automatic low oil shutdown and carbon monoxide monitoring
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#6
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- Easily switch between gasoline, propane, and natural gas with a dial
- Operates at 120V and 240V for versatile use
- Includes a CO Shutdown Sensor for safety and automatic shutoff
- Electric start for easy operation with up to 12 hours runtime on half-load
- Equipped with multiple outlets including 120V and transfer-switch-ready options, plus additional connections for LPG and NG
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- Easily switch between gasoline, propane, and natural gas with a dial
- Operates at 120V and 240V for versatile use
- Includes a CO Shutdown Sensor for safety and automatic shutoff
- Electric start for easy operation with up to 12 hours runtime on half-load
- Equipped with multiple outlets including 120V and transfer-switch-ready options, plus additional connections for LPG and NG
#7
20% Off
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- 9500 running watts and 12500 peak watts on gasoline; 8500 running watts and 11200 peak watts on propane; remote start available with included key fob; offers electric and recoil start options
- Equipped with two GFCI 120V 5–20R standard household receptacles, one transfer switch ready 120V L14-30R, and one RV ready 120/240V 14–50R; all outlets are protected with rubber covers
- Powered by a 457cc Westinghouse 4-Stroke OHV engine featuring a durable cast iron sleeve; includes automatic low oil shutdown and a digital hour meter; VFT display provides real-time updates on voltage, frequency, and operating hours
- Includes a remote start key fob, 12V battery charger, oil, oil funnel, tool kit, and user manual for easy setup; minimal assembly required
- Factory-tested for functionality; may contain residual oil or fuel odor; EPA compliant; comes with a 3-year limited service, labor, and parts coverage and access to nationwide customer service
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- 9500 running watts and 12500 peak watts on gasoline; 8500 running watts and 11200 peak watts on propane; remote start available with included key fob; offers electric and recoil start options
- Equipped with two GFCI 120V 5–20R standard household receptacles, one transfer switch ready 120V L14-30R, and one RV ready 120/240V 14–50R; all outlets are protected with rubber covers
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#8
17% Off
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- 9000 running watts (11,000 peak) on gasoline, 8,100 running watts (10,000 peak) on propane, with less than 3% THD
- Equipped with two GFCI 120V outlets, one transfer switch ready 120V outlet, and one transfer switch ready 120/240V outlet; all outlets feature rubber covers for safety
- Digital display shows fuel level, power output, remaining run time, voltage, and lifetime hours
- Features a durable 452cc 4-stroke OHV engine with a cast iron sleeve, automatic low oil shutdown, and carbon monoxide sensor
- Includes a remote start key fob, 12V battery charger, oil, oil funnel, tool kit, and user manual for easy setup
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- 9000 running watts (11,000 peak) on gasoline, 8,100 running watts (10,000 peak) on propane, with less than 3% THD
- Equipped with two GFCI 120V outlets, one transfer switch ready 120V outlet, and one transfer switch ready 120/240V outlet; all outlets feature rubber covers for safety
- Digital display shows fuel level, power output, remaining run time, voltage, and lifetime hours
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#9
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- XP13000EH Dual Fuel generator delivers 13,000 watts of power for comprehensive home backup during outages.
- DuroMax leads the industry with a range of Dual Fuel portable generators suitable for various needs.
- Equipped with a reliable DuroMax engine designed for durability and performance.
- Features a push-button start, an easy-to-use fuel type selector, and multiple outlet options.
- Durable all-metal construction ensures long-lasting use without plastic components.
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- XP13000EH Dual Fuel generator delivers 13,000 watts of power for comprehensive home backup during outages.
- DuroMax leads the industry with a range of Dual Fuel portable generators suitable for various needs.
- Equipped with a reliable DuroMax engine designed for durability and performance.
- Features a push-button start, an easy-to-use fuel type selector, and multiple outlet options.
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#10
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- 5000 peak watts and 3900 rated watts with less than 3% THD; powered by gas or propane with remote start option
- Equipped with one 120V duplex outlet, one 30 Amp outlet for RVs, and two USB outlets suitable for various uses
- Digital display indicates fuel level, power output, remaining run time, voltage output, and total lifetime hours
- Operates quietly at 52 dBA with up to 18 hours of run time on a 3.4-gallon tank, includes an economy mode for enhanced fuel efficiency
- Functionally tested in the factory; compliant with EPA standards; includes a 3-year limited service warranty
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- 5000 peak watts and 3900 rated watts with less than 3% THD; powered by gas or propane with remote start option
- Equipped with one 120V duplex outlet, one 30 Amp outlet for RVs, and two USB outlets suitable for various uses
- Digital display indicates fuel level, power output, remaining run time, voltage output, and total lifetime hours
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