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DuroStar DS4000S - 3300/4000W Portable Generator

The DuroStar DS4000S is a compact open frame generator with a rated wattage of 3,300 W and a starting wattage of 4,000 W. (Read full specs)

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DuroStar DS4000SDuroStar DS4000SDuroStar DS4000S
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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 a few words, the DuroStar DS4000S is a compact portable generator perfectly suited for:

  • RV travellers who wish to upgrade their experience to another level
  • Occasional participants of outdoor events, competitions, concerts and festivals
  • Handcrafting enthusiasts who wish to work on-the-go
  • Homeowners in need of an emergency backup power for their essentials

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

Power & Run Time

The DuroStar DS4000S in use

The DuroStar DS4000S

The DuroStar DS4000S's core is the 208 cc (7 hp) DuroStar OHV 4-stroke engine, which runs on gasoline. With an output of 120V, it provides a running wattage of 3,300W and a peak wattage of 4,000W.

The generator is rated for a noise of 69 dBA (less noisy than background music). Its starting mechanism is based on a classic hand-operated recoil starting mechanism.

Featuring a 4 gallons fuel tank, the DS4000S guarantees continuous power for up to 26 hours on a full tank (fuel consumption around 0.15 GPH).

Due to the relatively high THD (<12%) of the DS4000S, it is advised against using it for powering sensitive electronic devices.

Outlets

The control panel is equipped with the following 3 AC outlets:

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

This DuroStar 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

Measuring L23 x W18 x H17.5 in, the classic open frame construction of the DuroStar DS4000S provides stability while enabling convenient maintenance access to components and adequate air cooling. The design is ideal for rough environments and demanding outdoor use.

The 92 lbs of the DS4000S's dry weight enables you to use it anywhere you will ever need. Moreover, the open frame design of the generator simplifies grabbing and relocating it.

You also have the option to purchase the official wheel kit (opens in a new tab) to aid in the easier transportation of the DS4000S.

Features

Panel of the DuroStar DS4000S

The DS4000S's control panel

Integrated into the control center of the DS4000S are a handy voltmeter that allows you to easily monitor power output anytime, facilitating the monitoring of its status and activity.

In addition to this info, the device's light indicator will illuminate to indicate if the oil level is too low.

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

Regarding security, the generator comes with an automatic low oil shut-off and an overload protection (circuit breaker), providing peace of mind during operation.

In addition to the traditional documentation and an owner's manual (opens in a new tab) to help you get started promptly, the DuroStar DS4000S also includes several accessories: tool kit and funnel. An official storage cover is also available, as a separate purchase.

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 92 lbs dry, the DuroStar DS4000S is consistent with the standard weight profile for devices ranging from 2500 to 3500 rated watts. Weight-conscious users may find the Pulsar PGD40iSCO appealing, as it is one of the top contenders in this power range, weighing just 46 pounds.
  • When stacked up against other devices of similar running wattage, this generator's lowest possible noise rating of 69 dBA places it in the louder category. 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.
  • As the DS4000S features an autonomy of up to 26 hours at 25% load, it has one of the highest run times in comparison to the other generators of its power range.
  • Though run time is a significant parameter, it's closely tied to the generator's fuel tank size. To get a comprehensive understanding, fuel efficiency must also be taken into account. 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 wish to further improve in the area of fuel efficiency, the Energizer eZV3500P, which boasts with a gas consumption of only 0.13 GPH, may be the right generator for you.

Price comparison

As you can see from these interactive charts, 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
  • Fuel efficient
AVERAGE SPECS:
  • Decent weight (92 lbs)
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
Parallel capableNo
RV readyNo
FuelGasoline
Engine208 cc DuroStar 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 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
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 generator sizer.
ItemRunning WattsStarting Watts
At homeAC (10,000 BTU)15002200
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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