Westinghouse WGen9500DF Portable Generator Review

Westinghouse WGen9500DF is one of the most powerful dual fuel portable generators. It is Smart Switch ready, which means your generator will start automatically when the power goes out to provide you with uninterrupted power all the time. It is easy to transport, comes with GFCI outlets, and starts effortlessly via electric and remote start systems.

Westinghouse WGen9500DF CARB Compliant generator


Generator Type: Westinghouse WGen9500DF is a powerful open frame dual fuel generator. It is an ideal backup power solution for mid-size to larger homes. Also, you can use this generator outdoors, such as construction sites.

Fuel Option: Its dual-fuel technology allows users to either use propane or gasoline to operate the generator. A fuel selector switch allows seamless switching between gasoline and propane. There is no need to turn off the generator to switch between these two fuel options. You can do that during operation without any safety concerns.

Warranty: Westinghouse WGen9500DF is backed by a 1-year limited commercial warranty and a 3-year limited residential warranty. Also, it offers lifetime technical support for free.

Its limited warranty doesn’t cover all the parts of the unit.

Transportation: It is quite heavy with 220 pounds of weight, but thanks to its folding handle and two 10-inch never-flat wheels that make transportation quite easier. Also, there is a lifting bracket to lift the unit when needed on a job site.

It is a big-sized unit having 27.2 inches in length, 26.5 inches in width, and 26 inches in height.

Starting Method: The generator is quite easy to start, thanks to its recoil and electric start mechanisms. To add further convenience, it comes with a remote start system.

The battery is included for the electric start, and the key fob is included for the remote start system.

Engine: Made with a cast iron sleeve, this heavy-duty 457cc 4-stoke Westinghouse OHV engine gives higher output power on both gasoline and propane.

Power Production Capacity: When running on gasoline, its powerful engine produces 12,500 watts of peak power and 9500 watts of rated power. But on propane, it delivers 11,200 peak watts and 8500 rated watts.

This power output allows you to easily run multiple major appliances at the same time.

THD Rating: THD (Total Harmonic Distortion) measures how much voltage or current harmonic distortion is present in an electrical signal. Westinghouse WGen9500DF doesn’t produce clean and stable power. Its THD rating is quite on the higher side (<23%). So, this generator is not made to power sensitive electronics because of the unstable power.

Decibel Rating: Because of its powerful engine and the power output it produces, its decibel rating is on the higher side. It operates at 73 dBA from a distance of 23 feet.

Fuel Tank Capacity: It has a 6.6-gallon fuel tank made up of steel. There is a fuel gauge to easily check the remaining fuel levels.

Runtime: Its engine runs up to 12 hours at half load on gasoline and up to 7 hours at half load on a 20-pound propane tank.

Oil Capacity: It can accommodate up to 1.1 quarts of oil, which is equal to 37.2 fluid ounces.

Power Receptacles: The power panel of Westinghouse WGen9500DF has a total of six AC outlets, but there is no DC outlet.

It has four 120 Volt 20 Ampere (5-20R) household outlets with GFCI protection to protect users from electrical shocks. With these outlets, you can power small to mid-size appliances of your home. The 120/240 Volt 30 Ampere (L14-30R) outlet makes this generator transfer switch ready. With this outlet, you can connect the generator with the break box of your house to power appliances during outages. And the 120/240 Volt 50 Ampere (14-50R) outlet can be used to power your major appliances and tools.

Smart Switch Ready: It is also a smart switch ready unit. There is a special outlet that allows you to get power automatically from the generator during an outage.

To use this feature, you need to purchase the Westinghouse ST Switch separately.

Data Center: Also, there is a data center that helps users to monitor the activity and status of the generator. This VFT meter shows voltage, frequency, total run hours, and run/maintenance time.

Safety Features: If we focus on the safety of the generator, then we have overload protection and low-oil shutdown.

Both these features safeguard your unit from damage. Overload protection prevents overheating caused by overloading. Low-oil shutdown immediately turns off the engine when it senses a lower oil level.

Emissions: It is EPA(Environmental Protection Agency) approved and CARB (California Air Resources Board) compliant.

Included Accessories: The accessories you will find inside the box include a spark plug wrench, propane hose, battery float charger, remote, oil bottle, and an oil funnel.

Westinghouse WGen9500DF vs. DuroMax XP12000EH vs. Pulsar G12KBN vs. Rainier R12000DF



  Westinghouse WGen9500DF DuroMax XP12000EH


Pulsar G12KBN


Rainier R12000DF


Peak/Rated Watts (Gas) 12500W/9500W 12000W/9500W 12000W/9500W 12000W/9500W
Peak/Rated Watts (Propane) 11200W /8500W 10200W/8075W 10800W/8550W 10800W/8550W
Gas Tank Size 6.6 gal. 8.3 gal. 8 gal. 6.6 gal.
Propane Tank Size 20 lbs. 20 lbs. 20 lbs. 20 lbs.
Runtime (Gas) 12 hrs (1/2 load) 9 hrs (1/2 load) 12 hrs (1/2 load) 12 hrs (1/2 load)
Runtime (Propane) 7 hrs (1/2 load) 4 hrs (1/2 load) 5 hrs (1/2 load) 5.5 hrs (1/2 load)
Noise  73 dBA  72 dBA 76 dBA 74 dBA
Starting Mechanism Recoil, Electric, Remote Recoil, Electric Recoil, Electric Recoil, Electric
Weight 220 lbs. 221 lbs. 209 lbs. 196 lbs.

 My Opinion:

Pros: Westinghouse WGen9500DF is a very powerful dual fuel generator. It is Smart Switch Ready, has a variety of AC outlets, and gives a decent runtime. Both electric and remote start systems add convenience. Also, it is quite easy to transport and comes with a 3-year limited warranty.

Cons: It is an expensive generator. Also, it is loud and has a limited fuel tank capacity.


Is it possible to connect a larger propane tank of 40 or 100 pounds with this generator?

Yes, to increase the runtime, you can hook up this generator to a 40 or 100-pound propane tank. But never try to run the generator continuously for a day or more. The engine also needs rest. If you don’t allow it to cool down between operations, it will overheat.

How can you avoid electrical shocks when connecting the battery?

  • Never connect the positive battery cable to the negative end and the negative battery cable to the positive end.
  • Always avoid touching both battery posts at the same time.
  • To install the battery, always use non-conducting tools.
  • When connecting battery cables, always connect the positive cable first.
  • When disconnecting battery cables, always disconnect the negative cable first.

How can you toggle between Voltage, Frequency, Total Runtime, and Run/Maintenance timer in a VFT meter?

It is quite easy to do. Just press and release the mode button to toggle between Voltage, Frequency, Runtime, and Maintenance Timer.

What is meant by P25, P50, and P100 in a run/maintenance timer mode?

The Run/Maintenance Timer displays the run time of the generator in hours and minutes. When the generator shuts off, this timer resets to zero. There is also a built-in maintenance reminder in it, which displays P25, P50, and P100 messages.

When it displays P25, it means you need to change the oil because the new generator has run for 25 hours. It is the maximum time you can run a new generator on new oil. The P50 message tells you it is time to clean the air filter. But when it says P100, it means you need to change the oil again, change or clean the fuel filter and the air filter.

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