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Powerhorse 4000ES Spec Review

The Powerhorse 4000ES is a compact open frame portable generator with a rated wattage of 3100 W and a starting wattage of 4000 W.

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Description

This Powerhorse Portable Generator with Electric Start provides clean, reliable electricity with less than 5% total harmonic distortion. 100% copper-wound generator head allows continuous operation without overheating. Features automatic voltage regulator with voltmeter and low oil shutdown.

Zoom on the Powerhorse 4000ES

In a nutshell, the Powerhorse 4000ES is a compact portable generator mostly geared towards:

  • 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 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 Powerhorse 4000ES in use

The Powerhorse 4000ES

The Powerhorse 4000ES's engine, 212 cc OHV 4-stroke, fueled by gasoline, can deliver 120V. It provides a running wattage of 3100W and reaches a peak wattage of 4000W.

At a noise rating of 95 dBA (which is pretty noisy), this generator can be started via a simple traditional pull-start mechanism, or a simple and elegant electric starter (battery not included).

The fuel capacity of 3.9 gallons allows the 4000ES to operate for around 10.6 hours at 50% load with a full tank (fuel consumption around 0.37 GPH).

The 4000ES generates a clean sine wave: providing <5% Total Harmonic Disruption (THD), delicate electronics can be plugged in its AC outlets safely.

Outlets

The control panel provides the upcoming 9 AC outlets:

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

In addition, it provides 1 DC outlet: there's a 12V 8A (cigarette lighter style) receptacle allowing you to easily charge your batteries.

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

Portability

The Powerhorse 4000ES has a conventional, open frame design, of the following dimensions: L25.4 x W18.8 x H19.8 in, which offers support and allows it to be raised above ground level. The generator is designed for ideal use outdoors and in rough environments.

While the generator is considered to be technically 'portable' (in the sense that you can move it), manually lifting and transporting it may be challenging, due to its high weight of 138 lbs. Nevertheless, thanks to its wheel kit and its folding handle (a decent solution to its lack of maneuverability), the generator can be easily moved, once placed the ground.

Features

Panel of the Powerhorse 4000ES

The 4000ES's control panel

The 4000ES and its control panel include a convenient voltmeter, which provides an easy way to monitor power output anytime. This feature comes handy when monitoring its status and activity.

In addition to this info, a light indicator serves to show you when its oil levels are insufficient.

The generator includes a built-in fuel gauge, a quick, easy and convenient method of checking the device’s gas level.

As far as security is concerned, the generator can be used with a peace of mind, as it features an overload protection (circuit breaker) and an automatic low oil shut-off.

Besides the usual set of documentation and owner's manual (opens in a new tab) to get you promptly started, Powerhorse also included a tool kit in the 4000ES's packaging.

Emissions

The Powerhorse 4000ES is EPA approved, but NOT CARB-compliant. Thus, it cannot be purchased or sold in California.

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

Product Video

The Powerhorse 4000ES versus other generators

The following charts are provided to give you an idea of how some of the key specs of the Powerhorse 4000ES compare to generators of similar power (between 2500 and 3500 W).

  • A weight of 138 lbs makes the Powerhorse 4000ES one of the heavier devices in the 2500-3500 rated wattage range. Regarding dry weight, one of the champions in the same power range is the WEN GN400i, with a dry weight of only 66.1 lbs.
  • When compared to devices able to produce a similar running wattage, this generator and its lowest emitted noise of 95 dBA is on the noisier side. 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 4000ES offers around 10.6 hours run time on a full tank at a 50% load, it falls within the average autonomy range among the generators of a similar power. Concerning the run times, one of the several devices with a comparable output, offering the highest autonomy, is the Honda EB4000X, which is able to run for around 16 hours.
  • The run time is important, but also hugely depends on the capacity of the fuel tank and doesn't mean much if we don't talk about fuel consumption as well. This generator is not fuel efficient compared to devices of similar output: its estimated fuel consumption stands at 0.37 GPH at a 50% load. 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 2500-3500W generators, the Powerhorse 4000ES 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
  • Electric start
  • Clean sine wave
AVERAGE SPECS:
  • Decent run time
WEAKNESSES:
  • Battery not included
  • No remote start
  • Not CARB-compliant
  • On the heavy side (138 lbs)
  • On the noisy side (95 dBA)
  • Low fuel efficiency

Do you own the Powerhorse 4000ES 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
Engine212 cc OHV 4-stroke
Starting systemRecoil, Electric
Power
VoltageAC: 120V 60 Hz, DC: 12V
Running watts3100 W
Starting watts4000 W
Running amps25.8 amps
Peaks amps33.3 amps
Run time @50% load10.6 h
Run time @25% loadUnknown
Features
GFCI outletsNo
Covered outletsNo
Automatic Voltage RegulationYes
AC outlets
  • 4x Duplex 120V 20A (5-20R)
  • 1x 120V 30A (L5-30R)
DC outlets1x 12V 8A (cigarette lighter style)
Data centerVoltmeter
IndicatorsLow oil
Fuel tankSteel, 3.9 gal
Fuel gaugeYes
Misc
Weight138 lbs
Approx. dimensions (L x W x H)25.4 x 18.8 x 19.8 in
Noise (lower limit)95 dBA
THD< 5%
EmissionsEPA
SecurityLow oil and overload protection
Spark arrestorYes
Accessories includedTool kit and wheel kit
Warranty2 years
Other model numbers750139

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 Powerhorse

Powerhorse is a trademarked brand name of gas-powered outdoor products owned and distributed by the Northern Tool & Equipment Company Inc. through their store locations and online. Powerhorse outdoor products include gas- and electric-powered tools including pressure washers, wood chippers/shredders, log splitters, electric generators and inverters. The product line also offers engines and water pumps. The brand's motto is "Power You Can Depend On".

Warranty Information

The Powerhorse 4000ES is covered under a warranty for up to 2 years. This warranty may be limited and may not cover all parts of the generator.
For more information about the warranty of Powerhorse generators, please contact the Powerhorse Customer Support: 1-866-443-2576.

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 homeRefrigerator (energy star)1921192
Hair dryer18001900
Blender400850
Set of 5 LED light bulbs5555
Cell phone charger2020
Total2467 W3467 W
For campingRadiant heater13001300
RV refrigerator180600
Toaster oven800800
LED TV150150
Pair of small speakers4545
Total2475 W2895 W
For workGrinder14002500
Halogen work light10001000
Total2400 W3500 W

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