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DuroMax XP4000S - 3300/4000W Portable Generator

The DuroMax XP4000S is a compact open frame generator with a rated wattage of 3,300 W and a starting wattage of 4,000 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 a nutshell, the DuroMax XP4000S is a compact portable generator mostly geared towards:

  • RV travellers looking for even more independence
  • Occasional participants of outdoor events, competitions, concerts and festivals
  • Handcrafting enthusiasts who wish to work on-the-go
  • Homeowners who want to be sure of their ability to power their fridges, cooking tools, heating and lighting equipment during power failures

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 houses a 208 cc (7 hp) DuroMax OHV 4-stroke engine, which provides 120V, consumes gasoline and delivers a running wattage of 3,300W along with a peak wattage of 4,000W.

The generator is rated for a noise of 69 dBA (less noisy than an office). Its starting mechanism is based on a conventional pull-start mechanism.

The XP4000S can operate for up to 26 hours with a full tank (fuel consumption around 0.15 GPH), due to its fuel capacity of 4 gallons.

Since the XP4000S has a somewhat high THD (<12%), it is advisable to not use it for the powering of sensitive electronic devices.

Outlets

The control panel includes the following 3 AC outlets:

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

While this DuroMax generator is not RV Ready, its L5-30R receptacle can be used for a simple RV connection with an L5-30P to TT-30R adaptor.

Portability

With its dimensions of L23 x W17 x H18 in, the conventional, open frame design of the DuroMax XP4000S offers stability and allows the generator to be raised above ground level. The featured design is ideal for the outdoors and all tough environments.

The XP4000S can be taken anywhere with you, thanks to its weight of 92 lbs. Furthermore, the open frame of the generator further helps when holding and moving it to a different place.

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 convenient voltmeter, which provides an easy way to monitor power output anytime to aid you with the monitoring of its status and activity.

In addition to this info, a light indicator allows you to instantly see if the oil level is too low.

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 overload protection (circuit breaker) and an automatic low oil shut-off, 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. Thus, selling and purchasing this generator is allowed in each 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).

  • With a dry weight of 92 pounds, the DuroMax XP4000S finds itself in the expected weight range for generators able to produce between 2500 and 3500 rated watts. If weight is your top priority, one of the champions in this power category is the Pulsar PGD40iSCO, weighing just 46 pounds.
  • Among the generators of a comparable running wattage, this generator with a lowest noise of 69 dBA can be judged as noisy. If noise emissions are one of your priorities, you may be interested in the Honda EU3000iS, one of the least noisy generators similarly powerful as this one, rated for 50 dBA.
  • The XP4000S provides one of the highest run time among similarly powerful devices, reaching up to 26 hours at 25% load.
  • 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. At an estimated fuel consumption of 0.15 GPH (gallon per hour) at 25% load, this generator is a rather fuel efficient one within its wattage category. If you are concerned with gasoline efficiency, having a fuel consumption of just 0.13 GPH, the Energizer eZV3500P is a device you could look out for.

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
  • High run time
  • Fuel efficient
AVERAGE SPECS:
  • Decent weight (92 lbs)
WEAKNESSES:
  • No electric start
  • On the noisy side (69 dBA)

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
Parallel capableNo
RV readyNo
FuelGasoline
Engine208 cc DuroMax OHV 4-stroke
Starting systemRecoil
Warranty3 years
Power
VoltageAC: 120V 60 Hz
Running watts3,300 W
Starting watts4,000 W
Running amps27.5 amps
Peak amps33.3 amps
Run time @50% load12 h
Run time @25% load26 h
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%
ComplianceCARB, EPA
SecurityLow oil and overload protection
Spark arrestorYes
NeutralFloating
Accessories includedFunnel and tool kit
UPC811640013066

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.

Spec Improvement×

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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 generator sizer.
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
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.

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DuroMax XP4000S
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  1. 5
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    Love this generator.

    + PROS:
    • Starts the first or second pull, not real loud works great for our RV will run the AC on the river bar. Emergency home back-up perfect. Owned for 5 years, always starts.
    - CONS:
    • No cons.
    Helpful(0) Unhelpful(0)You have already voted this

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