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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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Price history for the Powerhorse 4000ES
Latest updates:
  • $639.99 - November 24, 2020
  • $629.99 - August 24, 2020
Data source: northerntool.com
Since: August 24, 2020
  • Highest Price: $639.99 - November 24, 2020
  • Lowest Price: $629.99 - August 24, 2020

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 looking for even more independence
  • People occasionally participating in outdoor fairs, festivals or events
  • 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, including its emission compliance information.

Power & Run Time

The Powerhorse 4000ES in use

The Powerhorse 4000ES

The Powerhorse 4000ES's core is the 212 cc OHV 4-stroke engine, which runs on gasoline. With an output of 120V, it provides a running wattage of 3100W and a peak wattage of 4000W.

With a noise rating of 95 dBA (which is pretty noisy), the generator features a simple traditional pull-start mechanism, but also 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).

Delicate electronics can be plugged in an AC outlets safely, as the 4000ES generates a clean sine wave, reaching a <5% Total Harmonic Disruption (THD).

Outlets

The control panel features the upcoming 9 AC outlets:

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

It also sports 1 DC outlet: there's a 12V 8A (cigarette lighter style) receptacle with which you may charge your batteries with ease.

This Powerhorse 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 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 design is ideal for rough environments and demanding outdoor use.

Since the generator weighs 138 lbs, it will be incredibly difficult to manually lift it and transport it, even though it is technically considered to 'be portable' (in the sense that it is movable). However, this lack of maneuverability is compensated by its wheel kit and its folding handle, with which you can conveniently shift it, once it's on the ground.

Features

Panel of the Powerhorse 4000ES

The 4000ES's control panel

The control panel of the 4000ES includes a handy voltmeter that allows you to easily monitor power output anytime, helpful for the monitoring of its status and activity.

In addition to this info, a light indicator shows you if 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.

From a security point of view, the generator is equipped with an automatic low oil shut-off and an overload protection (circuit breaker), giving you a peace of mind during use.

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).

  • Considering its dry weight of 138 pounds, the Powerhorse 4000ES is one of the heavier generators producing between 2500 and 3500 running watts. In terms of weight, one of the champions in their power range is the WEN GN400i, standing at just 66.1 lbs.
  • As this generator has its lowest possible noise of 95 dBA, it should be considered noisier compared to its peers of a comparable running wattage. 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 4000ES, falls within the average autonomy range compared to generators of a roughly same power, with a run time of around 10.6 hours at a 50% load and a full tank. 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. In fact, this generator is not among the most fuel efficient, within the aforementioned wattage range : its estimated gasoline consumption at 50% load is around 0.37 GPH. If you wish to acquire one of the most gasoline efficient products of this power range, the Westinghouse iGen4200, with a fuel consumption of 0.17 GPH could be in your good books.

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.

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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