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4 and a Half stars

Review of the Westinghouse WGen9500 Dual Fuel Open Frame Portable Generator

12500 Starting Watts, 9500 Running Watts on Gasoline
11200 Starting Watts, 8500 Running Watts on Propane

westinghouse wgen9500df

Should You Buy It?

Yes, there are a los of 5-stars for this powerful and heavy portable generator. It's a popular choice for those seeking power and flexibility and it can go out of stock quickly.

At the end of the day, this is a very capable and versatile traditional generator that delivers a lot of wattage for a fair price. 

Key Points about the Westinghouse WGen9500

Powerful and dual fuel
Push button electric start
Remote key fob starter
Digital Data Center
Fuel gauge
Works with both 120v/240v
No-flat wheels
Noisy due to open frame construction
No low oil warning LED
Weak packaging
Owner likes and dislikes are shown below, together with more detailed information on the generator's feature set.

Overview of the Generator

Components of the Westinghouse WGen9500DFComponents of the Westinghouse WGen9500DF
Westinghouse WGen9500DF Features
The Westinghouse WGen9500DF is an RV-Ready high power dual fuel portable generator housed in a hardened-steel open frame. It's equipped with an electric start and a remote key fob. It's an ideal and versatile solution for providing backup power for your home during blackouts. Plus, like its single fuel counterpart, it's also a powerful option to support heavy work on a job site, as well as power campsite trailers. 

If you are more interested in a slightly more affordable gasoline fuel model, you might want to consider the Westinghouse WGen9500.  

Controls and Features

Control Panel Westinghouse WGen9500DF
The control panel is one of the most comprehensive you'll come across, with yellow touch points to guide you to its essential features. It has a digital Data Center LED display giving you information on Volts, Frequency, and Lifetime Run Hours. And a simple dial allows you to easily switch from gasoline to propane.

A push button electric start/stop, which you can pair with the remote key fob, allows you to easily start the generator. The unit also has a manual pull recoil mechanism which you can use, for example, if the battery is discharged.

The receptacles include 2xGFCI 5-20R 120v 20 Amp household duplex outlets, 1xTransfer Switch Ready L14-30R 120v/240v 30 Amp twist-lock, and 1x 120v/240v 50 Amp 14-50R receptacle, with protective rubber outlet covers. Unlike the WGen9500 this model doesn't have any USB ports. To take full advantage of the outlets you'll need appropriate extensions and adapters.

While the installation of a transfer switch requires the services of a professional electrician, Westinghouse offer an optional Smart Transfer Switch which you can connect yourself to automatically switch the grid's supply to your portable generator's power.

There is a fuel gauge next to the fuel cap on the top of the generator. The unit runs at 50% load for up to 12 hours on its 6.6 gallon (25 L) gasoline fuel tank, and up to 7 hours on a 20lb tank of propane.

There is no economy mode, nor are there warning LED indicators for overload, low oil or output ready. However, a low oil level sensor stops the engine when it detects the level is too low for safe operation.

The engine has a cast iron sleeve designed to make it more durable and give it a longer life.

With EPA Certification and CARB Compliance, you can operate the WGen9500DF in all 50 states.

Like all of Westinghouse's generator product line, this is backed by a 3-year limited warranty (residential) and Lifetime Technical Support. 

Here is the manual for this model.
We have more information about the dangers of carbon monoxide.

Power Output

Powered by a big 457cc 4-Stroke OHV Westinghouse engine, the WGen9500DF runs on both gasoline and propane. On gasoline it produces an impressive 12500 starting watts and 9500 running watts. On propane the output is a bit lower with 11200 starting watts and 8500 running watts. These outputs relate to operation at around sea level. For those who live at higher altitudes the power outputs diminish, and they will need to take account of this when calculating their needs. 

The generator is equipped with automatic voltage regulation and overload protection. But as it uses conventional generator technology you should be careful to avoid connecting sensitive electronics without using a UPS/line conditioner/surge protector.


Weighing in at 220lbs, this is a heavy piece of equipment. It's set in an open frame of hardened-steel, has protective roll bars and a foam grip handle. A kit of two solid never-flat (plastic) wheels are included to make it easier for you to move it around. However, although you probably won't want to move it too often, be warned about the no-flat wheels, how some owners say they can easily break, and how permanent flat spots can develop if the unit is left standing for some months. To resolve some of these issues, some owners replace plastic wheels with alternatives, while others have propped the unit up to take the weight off the wheels.

Noise Level

With an open frame body, the noise level is high at 74dB. If this figure doesn't mean much, be aware that there are no standards for measuring noise and most manufacturers do it their own way. Many owners find published levels to be misleading, so consider them only as general indications. You'll likely have to make up your own mind about how loud your generator is.

What Most Buyers Like

The WGen9500DF gets lots of 5-star reviews, and it's another one of Westinghouse's models that's often sold out. It comes with many recommendations especially from Florida residents who praise the dual fuel capability. With a larger 30lb propane tank one buyer expects to get 15-20 hours of operation, depending on demand, before having to refill. 

Another owner highlights the 50 Amp 240v connection, which not all generators have (many only have 30 Amp plugs, which they say is limiting).

Buyers praise the model for its quality construction and detail. Some examples are: the fuel shutoff is made of metal and not plastic; Westinghouse uniquely includes a battery charger; there is a remote key fob, an automatic choke, and a superb control panel. All of this makes it head and shoulders above the competition. 

The generator is loud, but no one pretends it is competing to be quiet.  

What Some Buyers Like Less

There are, according to one buyer, several inaccuracies in the manual relating to connecting the battery. For example, the instructions are generally good, but for non-electricians there is too much jargon on how to ground the unit to neutral.

Another buyer thinks there should be more clarity over the battery having been disconnected for shipment. New owners need to reconnect the cable between the battery and the generator, which comes in two pieces tied together when first setting it up.

Suggestions for improvements include: the fuel gauge could be made easier to read, and the addition of a low oil warning light would be useful.

One owner pleads for an upgrade to the plastic wheels for this heavy duty-generator. The view is expressed across the spectrum of manufacturers who provide solid never-flat wheels. This is because many of them are allegedly toy-like and can develop flat spots if the generator is stored for extended periods. Some buyers choose to replace these wheels with other types of wheels to resolve the problem or, as mentioned above, take the weight of the wheels by propping the generator up .

Although most units arrive intact, there are complaints about damage both in transit and at the factory where the box arrives intact. So some buyers say (applicable to most manufacturers) the packaging could be made stronger to help withstand mistreatment in the delivery process.
Running Watts9500
Peak Watts12500
Running Watts (Propane)8500
Peak Watts (Propane)11200
Running Amps35.5A @ 240V 79A @120V
Peak Amps52A @ 240V 104A @120V
Running Amps (Propane)71A @ 120V 35A @ 240V
Peak Amps (Propane)93A @ 120V 47A @ 240V
AC Voltage120/240V
AC Frequency60 Hz
Fuel Tank Capacity6.6 gal. (25 L)
Fuel GaugeYes
Run Time @ 50%12 hrs.
Run Time @ 50% (Propane)7 hrs.
Noise Level74 dBA
Total Harmonic Distortion<23%
Outlets2 Duplex 120V 5-20R
1 120/240V L14-30R
1 120/240V 14-50R
ST Switch
GFCI OutletsYes
Display TypeVFT Meter
Voltage MeterYes
Frequency MeterYes
Lifetime Run HoursYes
Low Oil IndicatorNo
Overload IndicatorNo
Output Ready IndicatorNo
Covered OutletsYes
Overload ProtectionYes
RV ReadyYes
Transfer Switch ReadyYes
ST Switch ReadyYes
Battery IncludedYes
Grounding SystemBonded Neutral
Engine Displacement457cc
Engine TypeOHV 4 Stroke
Starter TypeElectric, Remote, Recoil
Low Oil ShutdownYes
Oil Capacity37.2 oz. (1.1 qt.)
Economy ModeNo
Choke TypeAutomatic
Included AccessoriesSpark Plug Wrench
Propane Regulator/Hose
Oil, Funnel, Remote
Battery Float Charger
Warranty (Residential)3 Year Limited
Warranty (Commercial)1 Year Limited
Assembled Length27.2 in. (691 mm)
Assembled Width26.1 in. (663 mm)
Assembled Height26.5 in. (673 mm)
Dry Unit Weight220 lb. (98 kg)
Last updated on: 9 December 2022
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