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Generac GP1800 Spec Review

The Generac GP1800 (5981) is a compact open frame generator with a rated wattage of 1800 W and a starting wattage of 2050 W.

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Description

An affordable solution for recreation applications. Perfect size for tailgating,camping and power tool use. (source: Generac (opens in a new tab))

Zoom on the Generac GP1800

In summary, the Generac GP1800 is a compact portable generator especially useful for:

  • Camping and tailgating buffs looking to enhance their experience
  • Handcrafting enthusiasts who wish to work on-the-go

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 Generac GP1800 in use

The Generac GP1800

The Generac GP1800's design includes a gasoline-fueled 163 cc Generac OHV 4-stroke engine. With a 120V output, it gives a running wattage of 1800W and also a peak wattage of 2050W.

The generator features a conventional pull-start mechanism.

The GP1800 can operate for around 10.5 hours at 50% load with a full tank (fuel consumption around 0.33 GPH), due to its fuel capacity of 3.5 gallons.

The powering of sensitive electronic devices with the GP1800 is not recommended due to its relatively high THD (<25%).

Outlets

The control panel features the upcoming 2 AC outlets:

Duplex 120V 20A (5-20R)

Portability

The dimensions of the Generac GP1800, which are L22.8 x W16.8 x H17.3 in, and its typical, open frame design provides stability and enables the generator to be raised above ground level. The featured design is ideal for the outdoors and all tough environments.

The GP1800 can be taken anywhere with you, thanks to its weight of 84 lbs. Moreover, its open frame design makes it incredibly easy to grab the frame in order to change its location.

Features

Panel of the Generac GP1800

The GP1800's control panel

The fuel level of the generator can be determined quickly, easily, and conveniently with the help of its built-in fuel gauge.

From a security standpoint, the product offers an automatic low oil shut-off and an overload protection (circuit breaker), allowing you to 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 a funnel in the GP1800's packaging.

Emissions

The Generac GP1800 is EPA approved, but NOT CARB-compliant. Thus, it cannot be purchased or sold in California.

However, it features a spark arrestor and therefore, can be used in forested areas.

The Generac GP1800 versus other generators

The following charts are provided to give you an idea of how some of the key specs of the Generac GP1800 compare to generators of similar power (between 1500 and 2500 W).

  • Considering its dry weight of 84 pounds, the Generac GP1800 is one of the heavier generators producing between 1500 and 2500 running watts. If weight matters to you, one of the champions in this power range is the Champion 200949 with only 38.6 pounds.
  • As the GP1800 features an autonomy of around 10.5 hours at 50% load, it has a higher run time than an average generator of its power range. If autonomy is your priority, one of the devices of a similar power output with the highest run time is the Westinghouse WGen2000, reaching around 20 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 rather wasteful, compared to other devices within the aforementioned output range, when it comes to gasoline consumption, as it reaches roughly 0.33 GPH at a 50% load. If you are concerned with gasoline efficiency, having a fuel consumption of just 0.12 GPH, the Westinghouse iGen2200 is a device you should look out for.

Price comparison

As you can see from this interactive chart, when compared to other 1500-2500W generators, the Generac GP1800 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
  • High run time
WEAKNESSES:
  • No data center
  • No electric start
  • Not CARB-compliant
  • On the heavy side (84 lbs)
  • Low fuel efficiency

Do you own the Generac GP1800 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
Engine163 cc Generac OHV 4-stroke
Starting systemRecoil
Power
VoltageAC: 120V 60 Hz
Running watts1800 W
Starting watts2050 W
Running amps15 amps
Peak amps17.1 amps
Run time @50% load10.5 h
Run time @25% loadUnknown
Features
GFCI outletsNo
Covered outletsNo
Automatic Voltage RegulationYes
AC outlets1x Duplex 120V 20A (5-20R)
DC outletsNo
Data centerNo
IndicatorsNo
Fuel tankSteel, 3.5 gal
Fuel gaugeYes
Misc
Weight84 lbs
Approx. dimensions (L x W x H)22.8 x 16.8 x 17.3 in
Noise (lower limit)Unknown
THD< 25%
EmissionsEPA
SecurityLow oil and overload protection
Spark arrestorYes
NeutralBonded to frame
Accessories includedFunnel
Warranty2 years
Other model numbers5981

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 GP1800 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 generator sizing calculator.
ItemRunning WattsStarting Watts
At homeRefrigerator (energy star)1921192
Freezer8101750
Pair of small speakers4545
Total1047 W2047 W
For campingRadiant heater13001300
Radio100100
Total1400 W1400 W
For workDemolition hammer12601260
Bug zapper8080
Total1340 W1340 W
What is the noise rating of the GP1800?

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

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