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WEN DF400iX - 3200/4000W Dual Fuel Inverter Generator

The WEN DF400iX is a quiet and compact dual fuel inverter generator with a rated wattage of 3200 W and a starting wattage of 4000 W.

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Description

Zoom on the WEN DF400iX

The WEN DF400iX is the newer version of the popular DF400i. It's a quiet and compact portable inverter generator especially useful for:

  • RV travellers wishing to enhance their freedom and nomad lifestyle
  • People occasionally participating in outdoor fairs, festivals or events
  • Amateur DIY lovers
  • Homeowners who want to be able to use the most necessary devices in their household, even during a blackout
  • Camping and tailgating buffs looking to enhance their experience

In the sections ahead, the power characteristics, availability of various outlets, the portability, and any additional features of the device shall be discussed, including its emission compliance information.

Power & Run Time

With its dual-fuel technology, the powerful and versatile WEN DF400iX provides an output of 120V. While gasoline-powered, it gives a running wattage of 3200W along with a peak wattage of 4000W. While propane-powered, it provides 2900 rated watts and 3200 starting watts. Moreover, since it is parallel capable (parallel kit not included), its power may be increased if linked to a second compatible unit.

WEN’s Auto Fuel Selection technology automatically selects the fuel source (LPG or gasoline) depending on availability and prioritizes LPG. Thus, if a propane tank with enough LPG is connected, the generator will automatically use LPG. If no propane tank is connected, or if there is not enough LPG remaining in the tank, the generator will use gasoline.

With a noise rating of 58 dBA (less noisy than a conversation at home), the inverter generator features a simple traditional pull-start mechanism, but also a convenient and easy-to-use electric starter (battery included).

As for its running time, the DF400iX, along with its 2.2 gallons fuel capacity, can run for around 8.5 hours at 50% load with a full tank filled with gasoline (fuel consumption around 0.26 GPH). If propane is used, it can operate for around 9 hours (on a 20 lbs tank - propane consumption around 0.52 GPH).

Delicate electronics can be plugged in an AC outlets safely, as the DF400iX generates a clean sine wave, reaching a <1.2% Total Harmonic Disruption (THD).

Outlets

The control panel features the following 3 AC outlets:

Duplex 120V 20A (5-20R)
120V 30A (TT-30R) receptacle

It also sports 3 DC outlets: there's a 12V 8A (cigarette lighter style) receptacle allowing you to easily charge your batteries and two 5V USB ports (USB-A) with which charging of electronics like mobile phones and tablets is made convenient.

With its TT-30R receptacle (TT as in 'Travel Trailer'), this WEN generator is RV Ready.

Portability

Thanks to its closed inverter generator design (L23.2 x W18 x H20.1 in), the WEN DF400iX, is more esthetical than a typical, open frame generator. The featured design follows the latest trends and is ideal for easy and recreational use.

Since the generator weighs 100 lbs, it will be incredibly difficult to manually lift it and transport it, even though it is technically considered to 'be portable' (in the sense that it is movable). However, its challenging mobility is solved by its set of 2 wheels and its folding handle, which will ease its displacement, once it is on the floor.

Features

Panel of the WEN DF400iX

The DF400iX's control panel

One of the many DF400iX's features is the data center, included in its control panel, which conveniently provides information on the lifetime run hours, fuel level, frequency, power output and voltage and thus, helps you monitor its activity and status.

In addition to this info, several light indicators serve to show you when the generator is overloaded, the generator is ready and its oil levels are insufficient.

The fuel shutoff feature turns off the flow of fuel, allowing for the DF400iX to use up the remaining fuel from the carburetor before automatically shutting down. This helps fight the build-up and blockages caused by stagnant fuel inside the carburetor, minimizing maintenance while prolonging the unit’s lifespan.

As far as security is concerned, the generator can be used with a peace of mind, as it features an automatic low oil shut-off and an overload protection (circuit breaker).

The unit also benefits from WEN's CO Watchdog carbon monoxide detection. This system measures the accumulation of poisonous CO gas while the generator is running. If the level of CO gas gets too high, the CO Watchdog system will automatically shut down the generator. It’s a welcomed additional security feature, but don’t forget to always take your generator outside (opens in a new tab).

Along the basic documentation and an owner's manual (opens in a new tab), useful for starting the generator right away, the WEN DF400iX's package also includes these accessories: propane hose, tool kit and funnel. An official storage cover is also available, as a separate purchase.

Emissions

The WEN DF400iX is EPA-approved and CARB-compliant. Thus, selling and purchasing this generator is allowed in each of the 50 states, including California.

Moreover, it features a spark arrestor, which makes it suitable for use in forested areas.

Product Video

The WEN DF400iX versus other generators

The following charts are provided to give you an idea of how some of the key specs of the WEN DF400iX compare to inverter generators of similar power (between 2500 and 3500 W).

  • With a dry weight of 100 pounds, the WEN DF400iX finds itself in the expected weight range for inverter generators able to produce between 2500 and 3500 rated watts. If you are concerned by weight, one of the champions in the above-mentioned power range is the Genmax GM3300i, with a dry weight of just 47.4 pounds.
  • Since this inverter generator is rated for a lowest possible noise of 58 dBA, it can be considered as one of the more quiet of the products generating similar power. For those who are looking for a less noisy device, we suggest the Honda EU3000iS. With just 50 dBA, it is one of the most quiet devices in this power range.
  • Given that the DF400iX reaches an autonomy of around 8.5 hours with a full tank and at 50% load, it is placed within the average autonomy range of similarly powerful inverter generators. Furthermore, considering the run times, one of the generators which have a roughly same power output, with the highest autonomy, is the Ryobi RYi4022X, as it provides around 12 hours.
  • Autonomy holds its importance, however, it is largely dependent on the generator’s fuel capacity and so, it is nonsensible to discuss it without mentioning fuel efficiency as well. This inverter generator can be considered as fuel efficient, due to its low estimated fuel consumption of only 0.26 GPH (gallon per hour) at 50% load, within the aforementioned wattage range. If not satisfied with the afore-mentioned fuel consumption, you may wish to check out the Genmax GM3300i. With a fuel consumption of as little as 0.22 GPH, it is one of the most efficient generators currently on the market.

Price comparison

As you can see from this interactive chart, when compared to other 2500-3500W dual fuel inverter generators, the WEN DF400iX is on the expensive side of the price range.

While certainly not the cheapest of its kind, purchasing it would most likely also mean enjoying the reliability of a high-end product.

The bottom line

STRENGTHS:
  • CO Watchdog
  • Several accessories included
  • RV Ready
  • Electric start
  • Parallel capable
  • Dual Fuel
  • Auto Fuel Selection technology
  • Inverter
  • Quiet for its power (58 dBA)
  • Fuel efficient
AVERAGE SPECS:
  • Decent weight (100 lbs)
  • Decent run time
WEAKNESSES:
  • On the expensive side
  • No remote start

Do you own the WEN DF400iX and agree (or disagree) with these strengths and weaknesses?

Let us know and write your own review.

Features and Specifications

General
InverterYes
PortableYes
Parallel capableYes, cable not included
RV readyYes
FuelDual Fuel (gasoline/propane)
Engine212 cc OHV 4-stroke
Starting systemRecoil, Electric
VoltageAC: 120V 60 Hz, DC: 12V
Power
 GasolinePropane
Running watts3200 W2900 W
Starting watts4000 W3200 W
Running amps26.7 amps24.2 amps
Peak amps33.3 amps26.7 amps
Run time @50% load8.5 h9 h
Run time @25% loadUnknownUnknown
Features
GFCI outletsNo
Covered outletsNo
Automatic Voltage RegulationInverter
AC outlets
  • 1x Duplex 120V 20A (5-20R)
  • 1x 120V 30A (TT-30R)
DC outlets1x 12V 8A (cigarette lighter style)
2x 5V USB port (USB-A)
Data centerPower output, fuel level, lifetime run hours, voltage and frequency
IndicatorsLow oil, overload and output ready
Fuel tank2.2 gal
Fuel gaugeDigital
Misc
Weight100 lbs
Approx. dimensions (L x W x H)23.2 x 18 x 20.1 in
Noise (lower limit)58 dBA
THD< 1.2%
ComplianceCARB, EPA
SecurityLow oil and overload protection, CO monitoring
Spark arrestorYes
Accessories includedFunnel, tool kit, propane hose, and battery
Warranty3 years
UPC044459040019

Unlike many websites, we did our best to research each of the specs above. That being said, we are not immune to making the occasional mistake or omission. Should you notice any missing or incorrect values, don't hesitate to suggest improvements so we can address the issue.

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About WEN

WEN Products, founded by Nick Anton in 1951, is an American power tool manufacturer and distributor, which claims to have a part in the development of modern chainsaw, soldering devices and wet sharpeners, through its research in random orbital technology. The Illinois based company expanded its distribution network to include various power tools, such as presses, drills and of course, power generators. As a distributor, WEN’s portfolio largely consists of branded products of different manufacturers, imported from Asia.

Warranty Information

The WEN DF400iX is covered under a warranty for up to 3 years. This warranty may be limited and may not cover all parts of the generator.
For more information about the warranty of WEN generators, please consult WEN's warranty policies (opens in a new tab). Alternatively, you can also contact their Customer Support: 1-847-429-9263.

Questions & Answers

What can it power?
Examples of items that can be simultaneously powered.
The examples below are based on a maximum load of 80% and estimated wattages. For a more accurate estimation, use our generator sizing calculator.
ItemRunning WattsStarting Watts
At homeDish washer15003000
Refrigerator (energy star)1921192
Toaster oven800800
Total2492 W3992 W
For campingRV AC (11,000 BTU)10101600
RV refrigerator180600
Radiant heater13001300
Set of 5 LED light bulbs5555
Total2545 W3135 W
For workGrinder14002500
Belt sander11502400
Total2550 W3800 W

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