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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Description
From emergency home backup to DIY projects to the jobsite, the Generac GP15500EFI portable generator provides high wattage, dependable portable power.
Zoom on the Generac GP15500EFI
In a few words, the Generac GP15500EFI is a powerful portable generator perfectly suited for:
- Professionals who want to ensure that a power failure will not prevent them from working
- Homeowners who wish to power almost all appliances in their house under any circumstances
In the sections ahead, the power characteristics, availability of various outlets, the portability, and any additional features of the device shall be discussed.
Power & Run Time
Generac GP15500EFI runs on gasoline, powered by a 816 cc Generac G-Force OVHI 4-stroke engine, delivering 120/240V, boasting a running wattage of 15,500W alongside a starting wattage of 19,300W.
This generator is equipped with an easy-to-use and reliable 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.
With a fuel capacity of 14.2 gallons, the GP15500EFI may run for around 11 hours at 50% load with a full tank (fuel consumption around 1.29 GPH).
Sensitive electronics can be safely plugged in the AC outlets, as the GP15500EFI produces a clean sine wave, with a <5% Total Harmonic Distortion (THD).
Outlets
The control panel is equipped with the following 7 AC outlets:
Despite not having the 'RV Ready' status, this Generac generator provides the benefit of convenient RV compatibility through its L5-30R receptacle, enabling you to easily power your RV using an L5-30P to TT-30R adaptor. Besides, since it features a twist-lock L14-30R receptacle, the GP15500EFI 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 L58.5 x W30.9 x H36.5 in, the Generac GP15500EFI boasts a traditional open frame structure, ensuring stability and allowing for convenient maintenance access to components, promoting air circulation. The featured design is ideal for the outdoors and all tough environments.
Since the generator weighs 420 lbs, it could be potentially be difficult to manually lift it and transport it, even though it is technically considered to 'be portable' (in the sense that it is movable). However, the constrained maneuverability is addressed with the assistance of its wheel kit (⌀12") and its folding handle, allowing for easy shifting once the generator is placed on the ground.
Features
One of the many GP15500EFI's features is the digital 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 fuel level of the generator can be determined quickly, easily, and conveniently with the help of its built-in fuel gauge.
Considering security aspects, the generator boasts an overload protection (circuit breaker) and an automatic low oil shut-off, offering peace of mind throughout operation.
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.
Beyond the regular documentation and owner's manual (opens in a new tab) for quick start, Generac has 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 22000 W).
- When it comes to weight, the Generac GP15500EFI tips the scales at just 420 pounds, making it one of the lighter generators in the 14000 to 22000 rated wattage range. If weight is your top priority, one of the champions in this power category is the Westinghouse WGen14500TFc, weighing just 348.3 pounds.
- At 50% load, the GP15500EFI boasts one of the highest run times than most similarly powerful products, reaching around 11 hours.
- While run time is vital, it hinges on the fuel capacity. To grasp the full picture, we must also factor in fuel efficiency. This generator is one of the more fuel-efficient options in its power range, consuming approximately 1.29 GPH (gallon per hour) at 50% load. If fuel consumption is your top priority, we suggest to check out the Westinghouse WGen14500DFc, which has a fuel consumption of only 0.95 GPH and thus, is one of the most efficient devices in our database.
Price comparison
As you can see from these interactive charts, when compared to other 14000-22000W generators, the Generac GP15500EFI is on the average side of the price range.
Therefore, this generator nicely fits in the expected budget for this kind of product.
The bottom line
- In the expected price range
- COsense® technology
- GFCI Outlets
- 4 different AC outlet types
- G-Force engine made in USA
- Electric start
- Clean sine wave
- Electronic Fuel Injection
- Lightweight for its kind (420 lbs)
- High run time
- Fuel efficient
- No recoil back-up
- No remote start
Features and Specifications
| Inverter | No |
|---|---|
| Parallel capable | No |
| RV ready | No |
| Fuel | Gasoline |
| Engine | 816 cc Generac G-Force OVHI 4-stroke |
| Starting system | Electric |
| Warranty | 3 years |
| Voltage | AC: 120/240V 60 Hz |
|---|---|
| Running watts | 15,500 W |
| Starting watts | 19,300 W |
| Running amps (@120/240V) | 129.2/64.6 amps |
| Peak amps (@120/240V) | 160.8/80.4 amps |
| Run time @50% load | 11 h |
| Run time @25% load | Unknown |
| GFCI outlets | Yes |
|---|---|
| Covered outlets | Yes |
| Automatic Voltage Regulation | Yes |
| AC outlets |
|
| DC outlets | No |
| Data center | Lifetime run hours |
| Indicators | No |
| Fuel tank | 14.2 gal |
| Fuel gauge | Yes |
| Weight | 420 lbs |
|---|---|
| Approx. dimensions (L x W x H) | 58.5 x 30.9 x 36.5 in |
| Noise (lower limit) | Unknown |
| THD | < 5% |
| Compliance | EPA |
| Security | Low oil and overload protection, CO monitoring |
| Spark arrestor | Yes |
| Neutral | Bonded to frame |
| Accessories included | Oil, battery, and wheel kit |
| UPC | 696471083705 |
We've taken extra care to research and verify each of the specifications above. That said, occasional mistakes or omissions are still possible. If you spot any missing or inaccurate information, feel free to suggest a correction so we can address it.
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?
| Item | Running Watts | Starting Watts | |
|---|---|---|---|
| At home | AC (10,000 BTU) | 1500 | 2200 |
| Electric fry pan | 1500 | 1500 | |
| Dish washer | 1500 | 3000 | |
| Microwave (1000 watts) | 1500 | 1500 | |
| Sump pump (1/2 hp) | 1050 | 2150 | |
| Refrigerator (energy star) | 192 | 1192 | |
| Water heater (50 gallons) | 5000 | 8000 | |
| LED TV | 150 | 150 | |
| Total | 12392 W | 15392 W | |
| For work | Electric welder | 9000 | 9000 |
| Table saw | 1800 | 4500 | |
| Grinder | 1400 | 2500 | |
| Bug zapper | 80 | 80 | |
| Total | 12280 W | 14980 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.
Couldn't find the right answer for you? Ask your own question.



