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Generac GP5500 Spec Review

The Generac GP5500 (5939) is a portable open frame generator with a rated wattage of 5500 W and a starting wattage of 6875 W.

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Set an alert for the Generac GP5500 - Current lowest price: $490.19
Price History
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Price history for the Generac GP5500
Latest updates:
  • $490.19 - April 2, 2021
  • $515.99 - March 26, 2021
  • $453.99 - March 8, 2021
  • $490.19 - February 24, 2021
  • $515.99 - February 19, 2021
  • $459.99 - January 27, 2021
  • $450.99 - January 20, 2021
  • $477.99 - January 9, 2021
Data source: ebay.com
Since: December 15, 2020
  • Highest Price: $515.99 - February 19, 2021
  • Lowest Price: $433.19 - December 17, 2020

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 wishing to enhance their freedom and nomad lifestyle
  • People occasionally participating in sporting competitions, open-air performances and outdoor festivals
  • Food van owners who know that just a short power outage could lose them hundreds of dollars
  • 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 Generac GP5500 in use

The Generac GP5500

The Generac GP5500 is powered by a 389 cc Generac OHV 4-stroke engine. It delivers 120/240V, runs on gasoline and offers a running wattage of 5500W as well as a peak wattage of 6875W.

This generator features a simple traditional pull-start mechanism.

The GP5500 can operate for around 10 hours at 50% load with a full tank (fuel consumption around 0.72 GPH), due to its fuel capacity of 7.2 gallons.

As the GP5500 has a relatively high THD (<20%), it is not recommended to use it to power sensitive electronic devices.

Outlets

The control panel provides the upcoming 5 AC outlets:

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

As the GP5500 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 design of the Generac GP5500 is a typical, open frame, with the dimensions of L27.5 x W27 x H25 in, offering support and stability and enabling the possibility of raising it above ground level. The design is ideal for rough environments and demanding outdoor use.

As the generator's weight is 170.9 pounds, manually moving it or transporting it may be challenging, despite the fact that it is technically considered 'portable' (movable). Still, once it is on the ground, its wheel kit (⌀9.5") and its folding handle can easily solve the issue of low mobility and allow for easy relocation of the device.

Features

Panel of the Generac GP5500

The GP5500's control panel

Monitoring of the GP5500's status and activity is made possible by a digital data center, which provides information on the lifetime run hours and is one of the features of its control panel.

Thanks to a built-in fuel gauge, the generator allows you to quickly, conveniently and easily check the gas level at a glance.

As for its security measures, the device features an overload protection (circuit breaker) and an automatic low oil shut-off, letting you use it with a peace of mind.

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.

Emissions

The Generac GP5500 is EPA approved, but NOT CARB-compliant. Thus, it cannot be purchased or sold in California.

However, it features a spark arrestor, which makes it suitable for use in forested areas.

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).

  • At a weight of 170.9 pounds, the Generac GP5500 places in the expected weight range of the generators in the 5000-6000 rated wattage range. Regarding dry weight, one of the champions in the same power range is the WEN GN6000, with a dry weight of only 119 lbs.
  • The GP5500's autonomy is somewhat low end compared to devices of its power range, as it reaches only around 10 hours at 50% load on a full tank. If you consider autonomy on a single full tank as one of the deciding factors, one of the generators in the same power range that offers the highest run time is the Cat RP5500, with around 15 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. Compared to its peers, this generator is not exactly fuel efficient, compared to similarly powerful devices, with an estimated fuel consumption of 0.72 GPH at a 50% load. If fuel consumption is your top priority, we suggest to check out the Westinghouse WGen5300v, which has a fuel consumption of only 0.35 GPH and thus, is one of the most efficient devices in our database.
According to our stats, the following comparison is pretty popular: Generac GP5500 vs Generac GP6500.

Price comparison

As you can see from this interactive chart, 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)
WEAKNESSES:
  • No electric start
  • Not CARB-compliant
  • Relatively low run time
  • 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
PortableYes
Parallel capableNo
RV readyNo
FuelGasoline
Engine389 cc Generac OHV 4-stroke
Starting systemRecoil
Power
VoltageAC: 120/240V 60 Hz
Running watts5500 W
Starting watts6875 W
Running amps (@120/240V)45.8/22.9 amps
Peaks 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%
EmissionsEPA
SecurityLow oil and overload protection
Spark arrestorYes
NeutralBonded to frame
Accessories includedOil and wheel kit
Warranty2 years
Other model numbers5939

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 made in the USA. However, the company provides no information about the origin of their components.

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 homeDish washer15003000
AC (10,000 BTU)15002200
Sump pump (1/2 hp)10502150
Refrigerator (energy star)1921192
Radio100100
Set of 5 LED light bulbs5555
Total4397 W5897 W
For campingRV AC (11,000 BTU)10101600
RV refrigerator180600
Hair dryer18001900
Radiant heater13001300
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.

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