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Generac GP5500 - 5500/6875W Portable Generator

The Generac GP5500 (5939) is a portable open frame generator with a rated wattage of 5,500 W and a starting wattage of 6,875 W. (Read full specs)

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Highest Price
$701.12
Lowest Price
$698.61
Current Price
$701.12

Description

The GP5500 has enough power for emergency use, when you’re not using it for outdoor recreation and DIY projects.

Zoom on the Generac GP5500

In summary, the Generac GP5500 is a portable generator especially useful for:

  • RV travellers who wish to upgrade their experience to another level
  • People occasionally participating in outdoor fairs, festivals or events
  • Food truck owners who want to ensure that their business is fully self-contained and does not rely on potentially unreliable external power
  • Homeowners in need of an emergency backup power for their essentials

Over the following sections, you'll uncover its power characteristics, the selection of outlets it offers, its overall portability, and the supplementary features it includes.

Power & Run Time

The Generac GP5500 in use

The Generac GP5500

The Generac GP5500's core is the 389 cc Generac OHV 4-stroke engine, which runs on gasoline. With an output of 120/240V, it provides a running wattage of 5,500W and a peak wattage of 6,875W.

This generator features a conventional pull-start mechanism.

Equipped with a 7.2 gallons fuel tank, the GP5500 ensures continuous operation for around 10 hours at 50% load with a full tank (fuel usage approximately 0.72 gallons per hour).

As the GP5500 exhibits a THD of less than 20%, which is high, it is best avoided for powering sensitive electronic devices.

Outlets

The control panel features the upcoming 5 AC outlets:

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

Since it features a twist-lock L14-30R receptacle, the GP5500 is tailored to be transfer switch ready, making it easy to connect it to your breaker box for home power support during outages.

Portability

At L27.5 x W27 x H25 in, the Generac GP5500 boasts a traditional open frame structure, ensuring stability and allowing for convenient maintenance access to components, promoting air circulation. The design is ideal for rough environments and demanding outdoor use.

With a weight of 170.9 lbs, the generator is still labeled as 'portable,' denoting its ability to be moved, although its heaviness might restrict easy portability. However, its challenging mobility is solved by its wheel kit (⌀9.5") and its folding handle, which will ease its displacement, once it is on the floor.

Features

Panel of the Generac GP5500

The GP5500's control panel

Embedded in the control panel of the GP5500, a digital data center serves as a vital feature, offering comprehensive information on the lifetime run hours to aid in monitoring activity and status.

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

From a security standpoint, the generator is furnished with an automatic low oil shut-off and an overload protection (circuit breaker), ensuring peace of mind during operation.

Besides the usual set of documentation and owner's manual (opens in a new tab) to get you promptly started, Generac also included some oil in the GP5500's packaging.

Product Video

The Generac GP5500 versus other generators

The following charts are provided to give you an idea of how some of the key specs of the Generac GP5500 compare to generators of similar power (between 5000 and 6000 W).

  • Weighing in at 170.9 lbs, the Generac GP5500 fits within the expected weight range for devices producing 5000 to 6000 rated watts. If you are mindful of weight, the WEN DF680iX is among the top contenders in this power range, with a dry weight of 94.8 pounds.
  • Offering around 10 hours of running time on a full tank at 50% load, the GP5500 is within the average autonomy range of similarly powerful generators. If run time is one of your main concerns, the Predator 6500 could be worth looking at. It boasts one of the highest run times among units of comparable power, lasting around 14.5 hours.
  • While the run time is an important parameter, it is dependent on the fuel tank's capacity and thus, doesn't say much on its own unless we consider fuel consumption as well. This generator is not fuel-efficient compared to devices of similar output: its estimated fuel consumption stands at 0.72 GPH at a 50% load. If minimizing fuel usage is one of your key priorities, the DuroMax XP7000iH is one of the most efficient devices with similar power output, with a gasoline consumption of only 0.38 gallons per hour.
According to our stats, the following comparison is pretty popular: Generac GP5500 vs Generac GP6500.

Price comparison

As you can see from these interactive charts, when compared to other 5000-6000W generators, the Generac GP5500 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
AVERAGE SPECS:
  • Decent weight (170.9 lbs)
  • Decent run time
WEAKNESSES:
  • No electric start
  • Low fuel efficiency

Do you own the Generac GP5500 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
Engine389 cc Generac OHV 4-stroke
Starting systemRecoil
Warranty2 years
Power
VoltageAC: 120/240V 60 Hz
Running watts5,500 W
Starting watts6,875 W
Running amps (@120/240V)45.8/22.9 amps
Peak amps (@120/240V)57.3/28.6 amps
Run time @50% load10 h
Run time @25% loadUnknown
Features
GFCI outletsNo
Covered outletsYes
Automatic Voltage RegulationYes
AC outlets
  • 2x Duplex 120V 20A (5-20R)
  • 1x 120/240V 30A (L14-30R)
DC outletsNo
Data centerLifetime run hours
IndicatorsNo
Fuel tankSteel, 7.2 gal
Fuel gaugeYes
Misc
Weight170.9 lbs
Approx. dimensions (L x W x H)27.5 x 27 x 25 in
Noise (lower limit)Unknown
THD< 20%
ComplianceEPA
SecurityLow oil and overload protection
Spark arrestorYes
NeutralBonded to frame
Accessories includedOil and wheel kit
Other model numbers5939
UPC696471059397

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 Generac

Generac Power Systems is an American based generator and power equipment manufacturer, founded in 1959. As its name suggests, the main focus of Generac are power generators, and other related electric equipment, such as switches, paralleling systems and small engines. The company has several manufacturing facilities based in the US, thus, their products are engineered and built in the USA. However, their components can be a mix of domestic and foreign parts.

Warranty Information

The Generac GP5500 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 Generac generators, please consult Generac's warranty policies (opens in a new tab). Alternatively, you can also contact their Customer Support: 1-888-GENERAC (888-436-3722).

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 wattage calculator.
ItemRunning WattsStarting Watts
At homeSump pump (1/2 hp)10502150
Furnace fan (1/2 hp)8752350
Refrigerator (energy star)1921192
Electric range21002100
Security system180180
Total4397 W5872 W
For campingRadiant heater13001300
RV refrigerator180600
Hair dryer18001900
RV AC (11,000 BTU)10101600
Radio100100
Total4390 W4980 W
For workTable saw18004500
Grinder14002500
Reciprocating saw730960
Bug zapper8080
Total4010 W6710 W
What is the noise rating of the GP5500?

Due to the lack of standardization in noise emission measurement, Generac does not provide their units' noise levels.

How much oil does the 389 cc motor hold (Asked June 08, 2021)

Engine oil capacity is 1.06 qts.

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

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Generac GP5500
9.5 Total Score
1 review
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User Reviews

  1. 4.75
    Price
    100
    Value
    100
    Quality
    80
    Performance
    100

    We bought our Generac 5500 in approximately 2008 or 09. We use it at our home when the power goes out, which usually happens a couple of times a year, sometimes more. As I am typing this we have been out of power for several hours and the generator is working great. It has been a good investment overall with the exception of a problem I had with it because I was using regular gasoline instead of recreational gas. Since I switched it starts and runs flawlessly and serves our needs very well. Usually starts with a pull or two. I made a wooden framed lightweight vented cover for it, set it on a cement pad, and it stays outside year round here in Michigan. For our purposes it has been a really good buy.

    + PROS:
    • inexpensive (on sale when we bought it)
    • reliable starting, pulls a little hard but starts fine
    • dependable (overall it has been great when using recreational gas instead of regular)
    - CONS:
    • had to have it repaired once (but it is 11 years old)
    • according to your review, it uses more gas than others
    Helpful(5) Unhelpful(0)You have already voted this

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