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DuroStar DS4000S Spec Review

The DuroStar DS4000S 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 DuroStar DS4000S 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: DuroStar (opens in a new tab))

Zoom on the DuroStar DS4000S

In a nutshell, the DuroStar DS4000S is a compact portable generator mostly geared towards:

  • RV travellers wishing to enhance their freedom and nomad lifestyle
  • Occasional participants of outdoor events, competitions, concerts and festivals
  • DIYers who wish to improve their efficiency with tools
  • Homeowners who want to be able to use the most necessary devices in their household, even during a blackout

In the following paragraphs, we shall explore the power characteristics, available outlets, portability, and any additional features of the device, along with its emission compliance information.

Power & Run Time

The DuroStar DS4000S in use

The DuroStar DS4000S

The DuroStar DS4000S is powered by a 208 cc (7 hp) DuroStar OHV 4-stroke engine. It delivers 120V, runs on gasoline and offers a running wattage of 3300W as well as a peak wattage of 4000W.

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

With a full tank, the DS4000S can operate for around 12 hours at 50% load (fuel consumption around 0.33 GPH), thanks to its fuel capacity of 4 gallons.

As the DS4000S has a relatively high THD (<12%), it is not recommended to use it to power sensitive electronic devices.

Outlets

The control panel features the following 3 AC outlets:

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

This DuroStar generator isn't quite RV Ready, but it features an L5-30R receptacle, allowing a simple RV connection through an L5-30P to TT-30R adaptor.

Portability

The dimensions of the DuroStar DS4000S, which are L23 x W18 x H17.5 in, and its typical, open frame design provides stability and enables the generator to be raised above ground level. The design is ideal for rough environments and demanding outdoor use.

The DS4000S's dry weight of 94 lbs lets you use its power anywhere needed. Moreover, grabbing and moving this product is made even easier by its open frame design.

It is also possible to purchase the official wheel kit (opens in a new tab) to help you transport the DS4000S more easily.

Features

Panel of the DuroStar DS4000S

The DS4000S's control panel

The DS4000S and its control panel include a handy voltmeter that allows you to easily monitor power output anytime. This feature comes handy when monitoring its status and activity.

In addition to this info, when its oil levels are insufficient, you will be informed by the featured light indicator.

A built-in fuel gauge allows for a quick, easy and convenient check of the fuel level of the generator.

From a security standpoint, the product offers an automatic low oil shut-off and an overload protection (circuit breaker), allowing you to use it with a peace of mind.

Besides the classic documentation and an owner's manual (opens in a new tab) to get you promptly started, the DuroStar DS4000S also comes with some accessories: tool kit and funnel are included. An official storage cover is also available, as a separate purchase.

Emissions

The DuroStar DS4000S 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 Videos

The DuroStar DS4000S versus other generators

The following charts are provided to give you an idea of how some of the key specs of the DuroStar DS4000S compare to generators of similar power (between 2500 and 3500 W).

  • At a weight of 94 pounds, the DuroStar DS4000S places in the expected weight range of the generators in the 2500-3500 rated wattage range. If you are concerned by weight, one of the champions in the above-mentioned power range is the Generac GP3300i, with a dry weight of just 59.5 pounds.
  • As this generator can emit noise as low as 69 dBA, it finds itself in the average expected noise for this kind of power. 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 DS4000S, falls within the average autonomy range compared to generators of a roughly same power, with a run time of around 12 hours at a 50% load and a full tank. 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.
  • While the run time is an important parameter, it is dependent on the fuel tank’s capacity and thus, doesn’t say much on its own unless we consider fuel consumption as well. 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 are concerned with gasoline efficiency, having a fuel consumption of just 0.17 GPH, the Westinghouse iGen4200 is a device you should look out for.

Price comparison

As you can see from this interactive chart, when compared to other 2500-3500W generators, the DuroStar DS4000S 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 (94 lbs)
  • Acceptable noise (69 dBA)
  • Decent run time
  • Decent fuel efficiency
WEAKNESSES:
  • No electric start

Do you own the DuroStar DS4000S 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 DuroStar 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
Weight94 lbs
Approx. dimensions (L x W x H)23 x 18 x 17.5 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 DuroStar

The DuroStar brand belongs to DuroMax, a company founded in 2003 and based in Ontario, California. DuroStar generators usually have a DuroMax twin, and only differ in their color scheme and in the factory in which they were produced. While DuroStar generators and engines are manufactured in China, the design and servicing centers reside in the US.

Warranty Information

The DuroStar DS4000S 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 DuroStar generators, please consult DuroStar's (DuroMax) 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 sizing calculator.
ItemRunning WattsStarting Watts
At homeElectric fry pan15001500
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

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