Westinghouse Dual Fuel Inverter Generators by Wattage

Best for
Whole-home backup with electronics-safe power

The Westinghouse 12000 Peak Watt Dual Fuel inverter, the iGen12000DFc, brings inverter-quality power to whole-home backup. On gasoline it produces 12,000 peak and 9,000 running watts; on propane, 11,000 peak and 8,100 running. With 3% THD or less, it is designed to be safe for sensitive electronics, so a gaming PC, router and TV can run during an outage without worry about dirty power.

Outlets are built for home and RV: one 120/240V 14-50R 50A outlet, one L14-30R 30A twist lock, both transfer switch or interlock kit ready, plus a GFCI 5-20R 20A duplex. It is parallel ready to double output. A 457cc OHV engine runs up to 19 hours at 25% load, and Eco Mode, insulation and mufflers bring noise as low as 64 dBA. The features and description name a 7.9-gallon gas tank, while the specifications say 9.8 gallons; we would rely on the 7.9 figure used in the run time claim.

An LED data center shows fuel level, output, remaining run time, voltage and lifetime hours. The box includes a remote start key fob, battery, 12V battery charger, propane regulator kit, oil, funnel and tool kit, and it has low oil shutdown and a CO sensor. This suits households that want clean whole-home power; it is overkill for tailgating.

• 9,000 running watts on gas, 8,100 on propane
• 3% THD or less
• 50A and 30A transfer-switch-ready outlets
• Remote start and CO sensor

Best for
Travel trailers and long tailgates

The Westinghouse 5000 Peak Watt Super Quiet inverter, the iGen5000DF, offers 5,000 peak and 3,900 rated watts at less than 3% THD. It runs as low as 52 dBA and up to 18 hours on a 3.4-gallon gas tank, with Economy Mode for maximum efficiency. That combination of quiet running and long run time makes it the best fit here for all-day tailgates and weekend camping.

Outlets include a 5-20R 120V duplex, an RV-ready TT-30R 30A outlet and two USB outlets. Starting options are remote key fob, electric and recoil, and a telescoping handle helps move it around. The LED data center rotates through fuel level, output, remaining run time, voltage and lifetime hours. It is 120V only, and the listing does not mention a CO sensor.

Westinghouse backs it with a 3-year limited service, labor and parts coverage. This suits travel trailer owners and anyone who wants enough power for a fridge, a few lights and a full entertainment setup at a campsite. It gives way to the 12000 for 240V home backup.

• 3,900 rated watts under 3% THD
• Up to 18 hours on 3.4 gallons
• TT-30R and two USB outlets

Best for
Tailgating with a console and TV

The Westinghouse 2800 Peak Watt Super Quiet inverter, the iGen2800DFc, is the tailgater’s pick. It weighs 45 pounds, runs as quiet as 52 dBA, and delivers 2,800 peak and 2,200 running watts on gasoline, or 2,520 peak and 1,980 running on propane. With less than 3% THD and copper windings, it is made for phones, TVs and computers, which covers a console and screen in the parking lot.

It has a 120V TT-30R 30A outlet and a 5-20R 20A duplex, and the specifications also list a USB port. A 98cc engine with Eco Mode runs up to 12 hours at 25% load on a 1.1-gallon tank. It includes a CO sensor and overload protection and is parallel capable; for full 30A RV power you parallel it with a compatible Westinghouse generator, with cables sold separately. Starting is recoil only.

This suits tailgaters, campers and apartment dwellers who want to keep essentials running in an outage. It gives way to the 4000 and 5000 for larger RVs or when you want electric start. For more options in this class, our guide to quiet generators for campsites is a useful comparison.

• 45 pounds
• 2,200 running watts on gas
• As quiet as 52 dBA
• CO sensor, parallel capable

Best for
Campers wanting remote start and CO shutdown

The Westinghouse 4000 Peak Watt Super Quiet inverter, the iGen4000DFc, gives 4,000 peak and 3,300 rated watts at less than 3% THD. It adds automatic low oil and carbon monoxide shutdown, plus remote start with the included key fob, electric start and recoil start.

Outlets include a 5-20R duplex, an RV-ready TT-30R 30A outlet and two USB outlets. It runs as low as 52 dBA with Economy Mode, but its run time is the shortest among the inverters: up to 7 hours on a 1.69-gallon tank. The specifications list tank volume as 12.8 liters, which does not match; the 1.69-gallon figure is the one tied to the run time claim.

It carries the same 3-year limited coverage as the 5000. This suits campers who want remote start and CO shutdown in a mid-size unit. If you need overnight run time, the 5000’s larger tank gives way to far longer operation.

Best for
Large homes needing maximum output

The Westinghouse 14500 Peak Watt Dual Fuel generator, the WGen11500DFc, is the most powerful unit here, but it is not an inverter. It produces 14,500 peak and 11,500 running watts on gasoline, or 13,500 peak and 10,500 running on propane, and the description also mentions natural gas. A 550cc engine with a cast iron sleeve runs up to 19 hours on a 9.5-gallon tank, or up to 7 hours on a 20 lb propane tank.

The listing describes low THD, stated as less than 5% in the description, which Westinghouse says is safe for computers, phones and TVs. That is higher than the 3% of the inverter models. It includes a CO sensor, remote electric start, automatic voltage regulation, low oil shutdown, GFCI outlets and a transfer switch ready design, though the listing does not detail the outlet types.

This suits larger homes that need maximum running watts for well pumps, HVAC and appliances. If quiet operation and the cleanest power for electronics matter more than raw output, the iGen12000DFc inverter is the better choice. For more on the non-inverter range, see our Westinghouse dual fuel generator guide.

• 11,500 running watts on gas
• Up to 19 hours on 9.5 gallons
• Not an inverter, under 5% THD

Best for
RV and home essentials on a simple setup

The Westinghouse 4650 Peak Watt Dual Fuel generator, the WGen3600DFcv, is the second non-inverter model. It delivers 4,650 peak and 3,600 running watts on gasoline and 3,240 running on propane; the features list 4,650 peak on propane while the description says 4,180. It runs up to 14 hours on a 4-gallon tank and 16.5 hours on a 20 lb propane tank, and you can swap fuels without shutting it off.

Outlets include a 5-20R duplex, an RV-ready TT-30R 30A and an L5-30R 30A, all with rubber covers. A 212cc engine with cast iron sleeve has automatic low oil and CO shutdown, and it arrives with oil, funnel, tool kit and manual. The listing names automatic voltage regulation but does not state a THD figure, so we would not assume it is as clean as the inverters for a gaming PC.

It has 3-year limited coverage. This suits RV owners and homeowners who want simple, durable backup for essentials and long run time. For sensitive electronics at a tailgate, the inverters give way to nothing here.