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Generac GP15500EFI - 15500/19300W Portable Generator With Electric Start And EFI Engine

The Generac GP15500EFI (7705) is a powerful open frame generator with a rated wattage of 15,500 W and a starting wattage of 19,300 W. (Read full specs)

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Generac GP15500EFIGenerac GP15500EFI
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Price history for the Generac GP15500EFI
Highest Price
$3,999.00
Lowest Price
$3,999.00
Current Price
$3,999.00

Description

From emergency home backup to DIY projects to the jobsite, the Generac GP15500EFI portable generator provides high wattage, dependable portable power. (source: Generac (opens in a new tab))

Zoom on the Generac GP15500EFI

In short, the Generac GP15500EFI is a powerful portable generator adequately designed for:

  • Professionals who want to ensure that a power failure will not prevent them from working
  • Prudent homeowners who want a backup power source in case of a power outage

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

Power & Run Time

Featuring a 816 cc Generac G-Force OVHI 4-stroke engine, the Generac GP15500EFI operates using gasoline, providing 120/240V, with a running wattage of 15,500W and a starting wattage of 19,300W.

This generator starts operation using an intuitive and practical electric starter (battery included).

The Electronic Fuel Injection (EFI) system enhances the engine's reliability, lowers fuel consumption, improves startup, reduces servicing, boosts stale fuel resistance, and offers better altitude adaptability.

The GP15500EFI can operate for around 11 hours at 50% load with a full tank (fuel consumption around 1.29 GPH), due to its fuel capacity of 14.2 gallons.

Thanks to its low <5% Total Harmonic Distortion (THD), the GP15500EFI produces a clean sine wave output, making it safe for your sensitive electronics when utilizing the AC outlets.

Outlets

The control panel provides the upcoming 7 AC outlets:

Two Duplexes 120V 20A (5-20R) GFCI
120V 30A (L5-30R) receptacle
120/240V 30A (L14-30R) receptacle
120/240V 50A (14-50R) receptacle

This Generac generator features an L5-30R receptacle, enabling an easy RV connection via an L5-30P to TT-30R adaptor. However, it is still not quite RV ready. Besides, due to the featured twist-lock L14-30R receptacle, the GP15500EFI is transfer switch ready: you may connect it to a breaker box to power your household during a power outage.

Portability

With a size of L58.5 x W30.9 x H36.5 in, the Generac GP15500EFI features an open frame design, providing stability and simplified maintenance access to components, enhancing air circulation. The design is ideal for rough environments and demanding outdoor use.

As the generator's weight is 420 pounds, manually moving it or transporting it may be challenging, despite the fact that it is technically considered 'portable' (movable). Nevertheless, it can still be moved quite conveniently with the help of its wheel kit (⌀12") and its folding handle, once it is placed on the ground.

Features

Panel of the Generac GP15500EFI

The GP15500EFI's control panel

A digital data center, one of the features of the GP15500EFI's control panel, gives you information on the lifetime run hours, and thus, is helpful for the monitoring of its activity and status.

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

As far as security is concerned, the generator comes with an automatic low oil shut-off and an overload protection (circuit breaker), providing peace of mind during use.

The GP15500EFI also benefits from Generac’s COsense® carbon monoxide monitoring. This technology senses and manages CO output and shuts down the unit when necessary, to protect you from CO poisoning.

In addition to the standard documentation and owner's manual (opens in a new tab) for prompt setup, Generac has also included some oil in the packaging of the GP15500EFI.

The Generac GP15500EFI versus other generators

The following charts are provided to give you an idea of how some of the key specs of the Generac GP15500EFI compare to generators of similar power (between 14000 and 20000 W).

  • Weighing in at 420 lbs, the Generac GP15500EFI fits within the expected weight range for devices producing 14000 to 20000 rated watts. If weight matters to you, one of the champions in this power range is the Genmax GM17000iE with only 308.6 pounds.
  • Since the GP15500EFI boasts with a run time of around 11 hours at 50% load, it can be safely judged as one of the devices with the highest run time among those of a comparable output.
  • 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 can be considered as fuel-efficient, due to its low estimated fuel consumption of only 1.29 GPH (gallon per hour) at 50% load, within the aforementioned wattage range. If minimizing fuel usage is one of your key priorities, the Westinghouse WGen14500DFc is one of the most efficient devices with similar power output, with a gasoline consumption of only 0.95 gallons per hour.

Price comparison

As you can see from these interactive charts, when compared to other 14000-20000W generators, the Generac GP15500EFI is on the expensive side of the price range.

While certainly not the cheapest of its kind, purchasing it would most likely also mean enjoying the reliability of a high-end product.

The bottom line

STRENGTHS:
  • COsense® technology
  • GFCI Outlets
  • 4 different AC outlet types
  • G-Force engine made in USA
  • Electric start
  • Clean sine wave
  • Electronic Fuel Injection
  • High run time
  • Fuel efficient
AVERAGE SPECS:
  • Decent weight (420 lbs)
WEAKNESSES:
  • On the expensive side
  • No recoil back-up
  • No remote start

Do you own the Generac GP15500EFI 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
Engine816 cc Generac G-Force OVHI 4-stroke
Starting systemElectric
Warranty3 years
Power
VoltageAC: 120/240V 60 Hz
Running watts15,500 W
Starting watts19,300 W
Running amps (@120/240V)129.2/64.6 amps
Peak amps (@120/240V)160.8/80.4 amps
Run time @50% load11 h
Run time @25% loadUnknown
Features
GFCI outletsYes
Covered outletsYes
Automatic Voltage RegulationYes
AC outlets
  • 2x Duplex 120V 20A (5-20R) GFCI
  • 1x 120V 30A (L5-30R)
  • 1x 120/240V 30A (L14-30R)
  • 1x 120/240V 50A (14-50R)
DC outletsNo
Data centerLifetime run hours
IndicatorsNo
Fuel tank14.2 gal
Fuel gaugeYes
Misc
Weight420 lbs
Approx. dimensions (L x W x H)58.5 x 30.9 x 36.5 in
Noise (lower limit)Unknown
THD< 5%
ComplianceEPA
SecurityLow oil and overload protection, CO monitoring
Spark arrestorYes
NeutralBonded to frame
Accessories includedOil, battery, and wheel kit
UPC696471083705

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 GP15500EFI is covered under a warranty for up to 3 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 sizer.
ItemRunning WattsStarting Watts
At homeSump pump (1/2 hp)10502150
Furnace fan (1/2 hp)8752350
Refrigerator (energy star)1921192
Clothes dryer54006750
Electric range21002100
Hair dryer18001900
Washing machine9001650
Set of 5 LED light bulbs5555
Cell phone charger2020
Total12392 W13867 W
For workElectric welder90009000
Table saw18004500
Grinder14002500
Bug zapper8080
Total12280 W14980 W
What is the noise rating of the GP15500EFI?

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

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