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Powerhorse 4000 (Discontinued)

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

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Powerhorse 4000Powerhorse 4000Powerhorse 4000Powerhorse 4000

This product was discontinued. For your convenience, we decided to leave this page up.
It was replaced by the Powerhorse 4500. However, you might still find it second hand on eBay, by clicking on the button below.

Description

This Powerhorse Portable Generator 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 4000

In summary, the Powerhorse 4000 is a compact portable generator especially useful for:

  • RV travellers looking for even more independence
  • People occasionally participating in sporting competitions, open-air performances and outdoor festivals
  • 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

The following sections will present you in detail its power characteristics, the different outlets it offers, its overall portability, the extra features it benefits from, and any relevant emission compliance details.

Power & Run Time

The Powerhorse 4000 in use

The Powerhorse 4000

The Powerhorse 4000's core is the 212 cc OHV 4-stroke engine, which runs on gasoline. With an output of 120/240V, it provides a running wattage of 3100W and a peak wattage of 4000W.

Enjoying a noise rating of 95 dBA (which is pretty noisy), this generator gets running thanks to a conventional pull-start mechanism.

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

Sensitive electronics can be safely plugged in the AC outlets, as the 4000 produces a clean sine wave, with a <5% Total Harmonic Disruption (THD).

Outlets

The control panel includes the following 9 AC outlets:

Four Duplexes 120V 20A (5-20R)
120/240V 30A (L14-30R) receptacle

Furthermore, it has 1 DC outlet: there's a 12V 8A (cigarette lighter style) receptacle with which charging your batteries is made easy.

Due to the featured twist-lock L14-30R receptacle, the 4000 is transfer switch ready: you may connect it to a breaker box to power your household during a power outage.

Portability

The Powerhorse 4000 has the following dimensions: L25.4 x W18.8 x H19.8 in. In combination with its conventional, open frame design, they provide support and allow the generator to be raised above ground level. The device has been designed for tough environments and demanding outdoor use.

Although this generator is technically considered 'portable' (in the sense that it can be moved), its 115 lbs make it incredibly difficult to manually lift and transport. However, its challenging mobility is solved by its wheel kit and its folding handle, which will ease its displacement, once it is on the floor.

Features

Panel of the Powerhorse 4000

The 4000's control panel

The control panel of the 4000 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 serves to show you when its oil levels are insufficient.

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

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

As for its accessories, apart from the previously mentioned features, the Powerhorse 4000 also comes with the basic documentation and an owner's manual (opens in a new tab), allowing you to start it right away.

Emissions

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

However, it features a spark arrestor and thus, may be used in forested areas.

Product Videos

The Powerhorse 4000 versus other generators

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

  • Having a dry weight of 115 lbs, the Powerhorse 4000 belongs in the expected weight range for generators which produce 2500 to 3500 rated watts. In terms of weight, one of the champions in their power range is the Genmax GM3300i, standing at just 47.4 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 you’d prefer a less noisy device, one of the most quiet devices, which share the same power range with this one, is the Honda EU3000iS, whose lowest noise levels reach just 50 dBA.
  • As the 4000 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 Predator 4375, which is able to run for around 16 hours.
  • Even though run times are undoubtedly important, they are dependent on the fuel capacity to a large extent. For a more wholesome picture, we must take into consideration the fuel consumption of the generator. This generator is rather wasteful, compared to other devices within the aforementioned output range, when it comes to gasoline consumption, as it reaches roughly 0.37 GPH at a 50% load. If not satisfied with the afore-mentioned fuel consumption, you may wish to check out the Westinghouse iGen4200. With a fuel consumption of as little as 0.17 GPH, it is one of the most efficient generators currently on the market.

The bottom line

STRENGTHS:
  • Clean sine wave
AVERAGE SPECS:
  • Decent weight (115 lbs)
  • Decent run time
WEAKNESSES:
  • No electric start
  • Not CARB-compliant
  • On the noisy side (95 dBA)
  • Low fuel efficiency

Do you own the Powerhorse 4000 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
Power
VoltageAC: 120/240V 60 Hz, DC: 12V
Running watts3100 W
Starting watts4000 W
Running amps (@120/240V)25.8/12.9 amps
Peak amps (@120/240V)33.3/16.7 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 120/240V 30A (L14-30R)
DC outlets1x 12V 8A (cigarette lighter style)
Data centerVoltmeter
IndicatorsLow oil
Fuel tankSteel, 3.9 gal
Fuel gaugeYes
Misc
Weight115 lbs
Approx. dimensions (L x W x H)25.4 x 18.8 x 19.8 in
Noise (lower limit)95 dBA
THD< 5%
ComplianceEPA
SecurityLow oil and overload protection
Spark arrestorYes
NeutralBonded to frame
Accessories includedWheel kit
Warranty2 years
Other model numbers750138

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". Powerhorse generators are engineered, developed and tested in Minnesota, but manufactured in China.

Warranty Information

The Powerhorse 4000 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 size calculator.
ItemRunning WattsStarting Watts
At homeAC (10,000 BTU)15002200
Refrigerator (energy star)1921192
Waffle iron750750
Cell phone charger2020
Total2462 W3462 W
For campingRV AC (11,000 BTU)10101600
RV refrigerator180600
Toaster oven800800
Blender400850
Bug zapper8080
Total2470 W3060 W
For workGrinder14002500
Halogen work light10001000
Total2400 W3500 W
How many hours to run before changing oil (Asked October 11, 2020)

Oil change schedule is detailed page 40 of the owner's manual (opens in a new tab).

Couldn't find the right answer for you? Ask your own question.

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Powerhorse 4000
7.1 Total Score
3 reviews
Add your review
Price
7
Value
6.7
Quality
7.7
Performance
7

User Reviews

Most Recent Most Helpful Highest Rating Lowest Rating Add your review
  1. 4.5
    Price
    90
    Value
    80
    Quality
    90
    Performance
    100

    I have one of these and never had any problem! Which is a good thing. But if it was 2-4 degrees I’m not to sure I would care unless ALL POWER WAS OUT EVERYWHERE!!

    + PROS:
    • Easy to start. Large gas tank.
    - CONS:
    • Well let me see, wish it got longer run time on a full tank.really not much to bitch about. So far
    Helpful(0) Unhelpful(0)You have already voted this
  2. 2.4
    Price
    50
    Value
    60
    Quality
    60
    Performance
    20

    Swap out the 13.6 breakers for 20 amp breakers and it run anything.

    + PROS:
    • Large gas tank.
    • Fairly decent on fuel consumption.
    - CONS:
    • 13.6 amp 120 outlets.
    Helpful(1) Unhelpful(0)You have already voted this
  3. 3.75
    Price
    70
    Value
    60
    Quality
    80
    Performance
    90

    During a recent arctic blast the temperatures dropped to 2°- 4° F. Grid power went out. I could not get my 4000 to start. I even brought it indoors (50°F and falling) to warm it up…53 hours later, the power came back. The generator was useless. It had a total of 4.5 hours run time and meticulously maintained.

    + PROS:
    • Lots of plugs,easy to use.
    - CONS:
    • Extremly sensitive to cold temperatures. It wont start in sub freezing temperatures.
    Helpful(2) Unhelpful(2)You have already voted this

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