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DuroStar DS4850EH Spec Review

The DuroStar DS4850EH is a portable open frame dual fuel generator with a rated wattage of 3850 W and a starting wattage of 4850 W.

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DuroStar DS4850EHDuroStar DS4850EHDuroStar DS4850EHDuroStar DS4850EH
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Description

As global energy consumption grows at exponential rates, so does the demand for energy solutions that are both more environmentally responsible and more efficient. The DuroStar DS4850EH has a dual fuel system that operates on either standard gasoline or cleaner burning liquid propane which can more than double you generator's run time. (source: DuroStar (opens in a new tab))

Zoom on the DuroStar DS4850EH

In summary, the DuroStar DS4850EH is a portable generator especially useful for:

  • RV travellers who wish to upgrade their experience to another level
  • People occasionally participating in sporting competitions, open-air performances and outdoor festivals
  • Homeowners who want to be sure of their ability to power their fridges, cooking tools, heating and lighting equipment during power failures
  • Professionals who want to be able to deliver results, even during a power failure

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 DS4850EH in use

The DuroStar DS4850EH

With its dual-fuel technology, the powerful and versatile DuroStar DS4850EH provides an output of 120/240V. While gasoline-powered, it gives a running wattage of 3850W along with a peak wattage of 4850W. While propane-powered, it provides 3658 rated watts and 4608 starting watts.

Enjoying a noise rating of 69 dBA (less noisy than an office), this generator can be started thanks to a simple traditional pull-start mechanism, but also to a simple and elegant electric starter (battery included).

As for its running time, the DS4850EH, along with its 4 gallons fuel capacity, can run for around 10 hours at 50% load with a full tank filled with gasoline (fuel consumption around 0.4 GPH). If propane is used, it can operate for around 9 hours (on a 20 lbs tank - propane consumption around 0.52 GPH).

As the DS4850EH has a relatively high THD (<12%), it is not recommended to use it to power sensitive electronic devices.

Outlets

The control panel provides the upcoming 3 AC outlets:

Duplex 120V 20A (5-20R) GFCI
120/240V 30A (L14-30R) receptacle

Additionally, it features 1 DC outlet: there's a 12V 8A output allowing you to easily charge your batteries.

As the DS4850EH holds a twist-lock L14-30R receptacle, it is transfer switch ready: you'll easily be able to connect it to your breaker box to power your home during a power outage.

Portability

The DuroStar DS4850EH has a conventional, open frame design, of the following dimensions: L25 x W24 x H21 in, which offers support and allows it to be raised above ground level. The device has been designed for tough environments and demanding outdoor use.

Even though this device may be technically portable (as in movable), manipulation and transportation without special equipment can be a challenge, as it weighs 122 pounds. Nevertheless, it can still be moved quite conveniently with the help of its wheel kit and its folding handle, once it is placed on the ground.

Features

Panel of the DuroStar DS4850EH

The DS4850EH's control panel

To help you monitor the DS4850EH's status and activity, its control panel is equipped with a convenient voltmeter, which provides an easy way to monitor power output anytime.

In addition to this info, a light indicator allows you to instantly see if its oil levels are insufficient.

The generator allows for a quick, easy and convenient assessment of its gas level, as it is equipped with a built-in fuel gauge.

As for its security measures, the device features an automatic low oil shut-off and an overload protection (circuit breaker), 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 DS4850EH, the following accessories are also included: propane hose, tool kit, funnel and battery charging cables.

Emissions

The DuroStar DS4850EH is EPA-approved and CARB-compliant. It can therefore be sold and purchased in all 50 states, including California.

Moreover, it features a spark arrestor, so it is adequate for use in forested areas.

Product Videos

The DuroStar DS4850EH versus other generators

The following charts are provided to give you an idea of how some of the key specs of the DuroStar DS4850EH compare to generators of similar power (between 3500 and 4500 W).

  • At a weight of 122 pounds, the DuroStar DS4850EH places in the expected weight range of the generators in the 3500-4500 rated wattage range. If weight is your top priority, one of the champions in this power category is the WEN GN400i, weighing just 66.1 pounds.
  • If compared to generators capable of producing a similar running wattage, this generator with a lowest emitted noise of 69 dBA can be considered somewhat noisy. For those who are looking for a less noisy device, we suggest the Cummins Onan P4500i. With just 52 dBA, it is one of the most quiet devices in this power range.
  • As far as autonomy is concerned, providing around 10 hours of runtime with a full tank at a 50% load, the DS4850EH falls into the low end in comparison with other devices of a comparable power output. If concerned with autonomy, one of the products of a comparable power output, which offers the highest run time, is the Honda EB4000X, boasting 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 0.4 GPH (gallon per hour) at a 50% load, it finds itself in the average gasoline consumption range of similar products. If you wish to further improve in the area of fuel efficiency, the Westinghouse iGen4200, which boasts with a gas consumption of only 0.17 GPH, may be the right generator for you.

Price comparison

As you can see from this interactive chart, when compared to other 3500-4500W generators, the DuroStar DS4850EH is on the average side of the price range.

Therefore, this generator nicely fits in the expected budget for this kind of product.

The bottom line

STRENGTHS:
  • In the expected price range
  • Several accessories included
  • GFCI Outlets
  • Electric start
  • Dual Fuel
AVERAGE SPECS:
  • Decent weight (122 lbs)
  • Decent fuel efficiency
WEAKNESSES:
  • No remote start
  • On the noisy side (69 dBA)
  • Relatively low run time

Do you own the DuroStar DS4850EH 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
FuelDual Fuel (gasoline/propane)
Engine208 cc OHV 4-stroke
Starting systemRecoil, Electric
VoltageAC: 120/240V 60 Hz, DC: 12V
Power
 GasolinePropane
Running watts3850 W3658 W
Starting watts4850 W4608 W
Running amps (@120/240V)32.1/16 amps30.5/15.2 amps
Peak amps (@120/240V)40.4/20.2 amps38.4/19.2 amps
Run time @50% load10 h9 h
Run time @25% loadUnknownUnknown
Features
GFCI outletsYes
Covered outletsNo
Automatic Voltage RegulationYes
AC outlets
  • 1x Duplex 120V 20A (5-20R) GFCI
  • 1x 120/240V 30A (L14-30R)
DC outlets1x 12V 8A output
Data centerVoltmeter
IndicatorsLow oil
Fuel tank4 gal
Fuel gaugeYes
Misc
Weight122 lbs
Approx. dimensions (L x W x H)25 x 24 x 21 in
Noise (lower limit)69 dBA
THD< 12%
EmissionsCARB, EPA
SecurityLow oil and overload protection
Spark arrestorYes
NeutralFloating
Accessories includedFunnel, tool kit, propane hose, battery charging cables, battery, and wheel 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 DS4850EH 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 homeMicrowave (1000 watts)15001500
AC (10,000 BTU)15002200
Set of 5 LED light bulbs5555
Total3055 W3755 W
For campingRV AC (11,000 BTU)10101600
RV refrigerator180600
Hair dryer18001900
Bug zapper8080
Total3070 W3660 W
For workTable saw18004500
Drain cleaner250250
Bug zapper8080
Total2130 W4830 W

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