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DuroStar DS4000S - 3300/4000W Portable Generator

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.

Zoom on the DuroStar DS4000S

In summary, the DuroStar DS4000S is a compact portable 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 sure of their ability to power their fridges, cooking tools, heating and lighting equipment during power failures

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

At a noise rating of 69 dBA (less noisy than background music), the generator is started via a simple traditional pull-start mechanism.

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.

The DS4000S is unsuitable for the powering of sensitive electronic devices due to its relatively high THD (<12%).

Outlets

The control panel features the upcoming 3 AC outlets:

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

Even though this DuroStar generator isn't quite RV Ready, its L5-30R receptacle allows an easy RV connection via an L5-30P to TT-30R adaptor.

Portability

With its dimensions of L23 x W18 x H17.5 in, the conventional, open frame design of the DuroStar DS4000S offers stability and allows the generator to be raised above ground level. This type of design is ideal for tough environments and heavy outdoor use.

The 94 lbs of the DS4000S's dry weight enables you to use it anywhere you will ever need. Furthermore, the open frame of the generator further helps when holding and moving it to a different place.

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's status and activity may be monitored conveniently via the control panel, as it features a convenient voltmeter, which provides an easy way to monitor power output anytime.

In addition to this info, when the oil level is too low, 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.

As for its security measures, the device features an overload protection (circuit breaker) and an automatic low oil shut-off, letting you use it with a peace of mind.

While the standard documentation and an owner's manual (opens in a new tab), helpful for starting the device promptly, come with the DuroStar DS4000S, the following accessories are also included: tool kit and funnel. 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 and thus, may be used 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).

  • As its weight is 94 pounds, the DuroStar DS4000S falls in the expected weight range of the devices in the 2500-3500 rated wattage category. If weight matters to you, one of the champions in this power range is the Genmax GM3300i with only 47.4 pounds.
  • When compared to devices able to produce a similar running wattage, this generator and its lowest emitted noise of 69 dBA is on the noisier side. 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.
  • Thanks to an impressive running time of around 12 hours at 50% load, the DS4000S benefits from a higher run time than many generators of a similar output. If concerned with autonomy, one of the products of a comparable power output, which offers the highest run time, is the Predator 4375, boasting 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 0.22 GPH, the Genmax GM3300i 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 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
  • High run time
AVERAGE SPECS:
  • Decent weight (94 lbs)
  • Decent fuel efficiency
WEAKNESSES:
  • No electric start
  • On the noisy side (69 dBA)

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%
ComplianceCARB, EPA
SecurityLow oil and overload protection
Spark arrestorYes
NeutralFloating
Accessories includedFunnel and tool kit
Warranty3 years
UPC811640011840

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 wattage 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
Radio100100
Pair of small speakers4545
Total2635 W3225 W
For workGrinder14002500
Disc sander12001200
Total2600 W3700 W

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