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DuroMax XP4000S Spec Review

The DuroMax XP4000S is a compact open frame generator with a rated wattage of 3300 W and a starting wattage of 4000 W.

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Description

The DuroMax XP4000S 4,000 Watt generator is designed for light duty emergency backup applications. This generator has everything a great generator needs, but at a price that everybody wants. (source: DuroMax (opens in a new tab))

Zoom on the DuroMax XP4000S

In summary, the DuroMax XP4000S is a compact portable generator especially useful for:

  • RV travellers wishing to enhance their freedom and nomad lifestyle
  • People occasionally participating in sporting competitions, open-air performances and outdoor festivals
  • DIYers who wish to improve their efficiency with tools
  • Homeowners in need of an emergency backup power for their essentials

The following sections will present you in detail its power characteristics, the different outlets it offers, its overall portability, the extra features it benefits from, and any relevant emission compliance details.

Power & Run Time

The DuroMax XP4000S in use

The DuroMax XP4000S

The DuroMax XP4000S's engine, 208 cc (7 hp) DuroMax OHV 4-stroke, fueled by gasoline, can deliver 120V. It provides a running wattage of 3300W and reaches a peak wattage of 4000W.

The generator is rated for a noise of 69 dBA (less noisy than a normal conversation). Its starting mechanism is based on a simple traditional pull-start mechanism.

The fuel capacity of 4 gallons allows the XP4000S to operate for around 12 hours at 50% load with a full tank (fuel consumption around 0.33 GPH).

As the XP4000S has a relatively high THD (<12%), it is not recommended to use it to power sensitive electronic devices.

Outlets

The control panel includes the following 3 AC outlets:

Duplex 120V 20A (5-20R)
120V 30A (L5-30R) receptacle

This DuroMax generator features an L5-30R receptacle, enabling an easy RV connection via an L5-30P to TT-30R adaptor. However, it is still not quite RV ready.

Portability

The DuroMax XP4000S has the following dimensions: L23 x W17 x H18 in. In combination with its conventional, open frame design, they provide support and allow the generator to be raised above ground level. This type of design is ideal for tough environments and heavy outdoor use.

The 92 lbs of the XP4000S's dry weight enables you to use it anywhere you will ever need. Additionally, the generator’s mobility is also improved by its open frame design, as it can be easily grabbed and shifted.

If you wish to transport the XP4000S more easily, you may also consider purchasing the official wheel kit (opens in a new tab).

Features

Panel of the DuroMax XP4000S

The XP4000S's control panel

The XP4000S's control center features a handy voltmeter that allows you to easily monitor power output anytime to aid you with the monitoring of its status and activity.

In addition to this info, when the oil level is too low, you will be informed by the featured light indicator.

The fuel level of the generator can be determined quickly, easily, and conveniently with the help of its built-in fuel gauge.

Security-wise, this product benefits from an automatic low oil shut-off and an overload protection (circuit breaker), which gives you a complete peace of mind when using it.

Along the basic documentation and an owner's manual (opens in a new tab), useful for starting the generator right away, the DuroMax XP4000S's package also includes these accessories: tool kit and funnel. An official storage cover is also available, as a separate purchase.

Emissions

The DuroMax XP4000S is EPA-approved and CARB-compliant. Therefore, its sale and purchase are permitted in all of the 50 states, including California.

Moreover, it features a spark arrestor and thus, may be used in forested areas.

The DuroMax XP4000S versus other generators

The following charts are provided to give you an idea of how some of the key specs of the DuroMax XP4000S compare to generators of similar power (between 2500 and 3500 W).

  • As its weight is 92 pounds, the DuroMax XP4000S falls in the expected weight range of the devices in the 2500-3500 rated wattage category. In terms of weight, one of the champions in their power range is the Generac GP3300i, standing at just 59.5 lbs.
  • Because this generator emits noise as low as 69 dBA, it can be considered to have a pretty average expected noise rating for a device of its power. If you are concerned with noise, check out the Honda EU3000iS, which is one of the least noisy generators in its power range, with a noise rating of just 50 dBA.
  • The XP4000S, offering a run time of around 12 hours with a full tank at a 50% load, falls within the average autonomy range when compared to its peers. If you consider autonomy on a single full tank as one of the deciding factors, one of the generators in the same power range that offers the highest run time is the Predator 4375, with around 16 hours.
  • Run times are important, yet thanks to their dependence on the fuel capacity, they should be judged along with the fuel consumption of the device. As this generator uses an estimated 0.33 GPH (gallon per hour) at a 50% load, it finds itself in the average gasoline consumption range of similar products. If you wish to acquire one of the most gasoline efficient products of this power range, the Westinghouse iGen4200, with a fuel consumption of 0.17 GPH could be in your good books.

Price comparison

As you can see from this interactive chart, when compared to other 2500-3500W generators, the DuroMax XP4000S is on the cheap side of the price range.

It can therefore be a really good buy if you're looking to acquire a budget generator.

The bottom line

STRENGTHS:
  • Inexpensive
  • Several accessories included
AVERAGE SPECS:
  • Decent weight (92 lbs)
  • Acceptable noise (69 dBA)
  • Decent run time
  • Decent fuel efficiency
WEAKNESSES:
  • No electric start

Do you own the DuroMax XP4000S and agree (or disagree) with these strengths and weaknesses?

Let us know and write your own review.

Features and Specifications

General
InverterNo
PortableYes
Parallel capableNo
RV readyNo
FuelGasoline
Engine208 cc DuroMax OHV 4-stroke
Starting systemRecoil
Power
VoltageAC: 120V 60 Hz
Running watts3300 W
Starting watts4000 W
Running amps27.5 amps
Peak amps33.3 amps
Run time @50% load12 h
Run time @25% loadUnknown
Features
GFCI outletsNo
Covered outletsNo
Automatic Voltage RegulationYes
AC outlets
  • 1x Duplex 120V 20A (5-20R)
  • 1x 120V 30A (L5-30R)
DC outletsNo
Data centerVoltmeter
IndicatorsLow oil
Fuel tank4 gal
Fuel gaugeYes
Misc
Weight92 lbs
Approx. dimensions (L x W x H)23 x 17 x 18 in
Noise (lower limit)69 dBA
THD< 12%
EmissionsCARB, EPA
SecurityLow oil and overload protection
Spark arrestorYes
NeutralFloating
Accessories includedFunnel and tool kit
Warranty3 years

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 DuroMax

Duromax is a small, American based power equipment company, with headquarters in Ontario, California. Duromax specializes in several products, including pumps, engines, pressure washers, and most importantly, power generators. In this regard, the company focuses solely on portable generators, of mostly small and medium power outputs, and dual fuel devices. Duromax’s generators are designed and serviced in the US, however, their production is outsourced overseas. Founded in 2003, DuroMax starts to be seen as an important player in the power generator market.

Warranty Information

The DuroMax XP4000S 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 DuroMax generators, please consult DuroMax's warranty policies (opens in a new tab). Alternatively, you can also contact their Customer Support: 1-844-DUROMAX (844-387-6629).

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 wattage calculator.
ItemRunning WattsStarting Watts
At homeMicrowave (1000 watts)15001500
Refrigerator (energy star)1921192
Washing machine9001650
Pair of small speakers4545
Total2637 W3637 W
For campingRV AC (11,000 BTU)10101600
RV refrigerator180600
Radiant heater13001300
Radio100100
Pair of small speakers4545
Total2635 W3225 W
For workGrinder14002500
Disc sander12001200
Total2600 W3700 W
Can you add an electric start? (Asked January 30, 2021)

Not without modifying the unit, which would most likely void your warranty. You may want to have a look at the XP4400E, which has similar specs, but comes with an electric start and a wheel kit.

Couldn't find the right answer for you? Ask your own question.

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