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Generac GP15500EFI - 15500/19300W Portable Generator

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.

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Generac GP15500EFIGenerac GP15500EFI
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Set an alert for the Generac GP15500EFI - Current lowest price: $3,999.00
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Price history for the Generac GP15500EFI
Latest updates:
  • $3,999.00 - November 26, 2023
  • $3,599.10 - November 23, 2023
  • $3,999.00 - August 3, 2023
Data source: farmandfleet.com
Since: August 3, 2023
  • Highest Price: $3,999.00 - August 3, 2023
  • Lowest Price: $3,599.10 - November 23, 2023

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 summary, the Generac GP15500EFI is a powerful portable generator especially useful for:

  • Professionals who want to be able to deliver results, even during a power failure
  • Small homeowners in search of a full power backup solution

In the sections ahead, the power characteristics, availability of various outlets, the portability, and any additional features of the device shall be discussed, including its emission compliance information.

Power & Run Time

The Generac GP15500EFI is powered by a 816 cc Generac G-Force (opens in a new tab) OHV 4-stroke engine. It delivers 120/240V, runs on gasoline and offers a running wattage of 15,500W as well as a peak wattage of 19,300W.

This generator features a convenient and easy-to-use 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.

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

The GP15500EFI generates a clean sine wave: providing <5% Total Harmonic Distortion (THD), delicate electronics can be plugged in its AC outlets safely.

Outlets

The control panel includes the following 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

Even though this Generac generator isn't quite RV Ready, its L5-30R receptacle allows an easy RV connection via an L5-30P to TT-30R adaptor. 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 its dimensions of L58.5 x W30.9 x H36.5 in, the conventional, open frame design of the Generac GP15500EFI offers stability and allows the generator to be raised above ground level. This type of design is ideal for tough environments and heavy 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

One of the many GP15500EFI's features is the data center, included in its control panel, which conveniently provides information on the lifetime run hours and thus, helps you monitor its activity and status.

The generator allows for a quick, easy and convenient assessment of its gas level, as it is equipped with a 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.

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.

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 GP15500EFI's packaging.

Emissions

The Generac GP15500EFI is EPA approved, but NOT CARB-compliant. Thus, it cannot be purchased or sold in California.

However, it features a spark arrestor, so it is adequate for use in forested areas.

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).

  • As for its weight, the Generac GP15500EFI weighs only 420 pounds, making it one of the lighter generators in the 14000-20000 rated wattage category. If you are concerned by weight, one of the champions in the above-mentioned power range is the Generac GP15000E, with a dry weight of just 363 pounds.
  • As the GP15500EFI features an autonomy of around 11 hours at 50% load, it has one of the highest run times in comparison to the other generators of its power range.
  • 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 one of the most 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.

Price comparison

As you can see from this interactive chart, 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
  • Electric start
  • Clean sine wave
  • Electronic Fuel Injection
  • Lightweight for its kind (420 lbs)
  • High run time
  • Fuel efficient
WEAKNESSES:
  • On the expensive side
  • No recoil back-up
  • No remote start
  • Not CARB-compliant

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 OHV 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 wattage calculator.
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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