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Generac GP3300i - 2500/3300W Inverter Generator

The Generac GP3300i (7153) is a compact and lightweight inverter generator with a rated wattage of 2,500 W and a starting wattage of 3,300 W. (Read full specs)

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Generac GP3300i
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Price history for the Generac GP3300i

Current price is in the high range.
Lowest price $639
Highest price $844
Current price $799
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Description

The GP3300i inverter featuring advanced PowerRush™ technology delivers over 50 percent more starting capacity so you can do more with less.

Zoom on the Generac GP3300i

In a nutshell, the Generac GP3300i is a compact and lightweight portable inverter generator mostly geared towards:

  • Camping and tailgating buffs looking to enhance their experience
  • Handcrafting enthusiasts who wish to work on-the-go
  • Homeowners in need of an emergency backup power for their essentials
  • RV travellers who wish to upgrade their experience to another level

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

The Generac GP3300i in use

The Generac GP3300i

Running on gasoline, the Generac GP3300i utilizes a 149 cc Generac OHV 4-stroke engine to deliver 120V, offering a running wattage of 2,500W and a starting wattage of 3,300W. Moreover, the parallel capability (parallel kit (opens in a new tab) not included) enables power output to double when paired with another similar or compatible unit, providing increased energy capacity and versatility for a wide range of needs.

This inverter generator utilizes a standard recoil pull-rope starting mechanism for startup. It features Generac's PowerDial™, an easy-to-use dial with three operation settings.

The GP3300i's fuel tank holds 1.06 gallon, ensuring uninterrupted operation for up to 7 hours with a full tank (fuel consumption approximately 0.15 GPH).

Sensitive electronics can be safely plugged in the AC outlets, as the GP3300i produces a clean sine wave, with a <3% Total Harmonic Distortion (THD).

Outlets

The control panel provides the upcoming 3 AC outlets:

Duplex 120V 20A (5-20R)
120V 30A (L5-30R) receptacle

Furthermore, it showcases 2 DC outlets: there's two 5V USB ports (USB-A) ideal for charging various electronic devices such as smartphones and tablets.

Even if this Generac generator isn't quite RV Ready, it still allows for an easy RV connection via an L5-30P to TT-30R adaptor, thanks to its L5-30R receptacle.

Portability

Since the Generac GP3300i is an inverter generator, its closed design (L22.2 x W13.3 x H18.4 in) not only provides an aesthetic advantage but also contributes to reduced noise levels compared to conventional, open frame devices. The design follows the contemporary trends and is perfect for recreationally generating power.

The 59.5 lbs of the GP3300i's dry weight enables you to use it anywhere you will ever need. Furthermore, the GP3300i's easy transport from A to B is facilitated by its convenient handle (molded in the case), which enhances grip.

Features

Panel of the Generac GP3300i

The GP3300i's control panel

Light indicators on the device will signal if the generator is overloaded, the generator is ready and its oil levels are insufficient.

In terms of security, the generator features an overload protection (circuit breaker) and an automatic low oil shut-off, ensuring peace of mind during its use.

The GP3300i 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 standard documentation and an owner's manual (opens in a new tab) to assist with setup, the Generac GP3300i ships with supplementary accessories: tool kit, oil and funnel.

Product Videos

The Generac GP3300i versus other generators

The following charts are provided to give you an idea of how some of the key specs of the Generac GP3300i compare to inverter generators of similar power (between 2000 and 3000 W).

  • Regarding its weight, the Generac GP3300i only weighs in at 59.5 pounds, which means it's one of the lighter inverter generators in the 2000-3000 rated wattage range. Weight-conscious users may find the WEN 56280iX appealing, as it is one of the top contenders in this power range, weighing just 41.9 pounds.
  • In terms of autonomy, the GP3300i offers up to 7 hours at a 25% load, placing it at the lower range within its type and power range. For those prioritizing autonomy, the Honda EU3000iS could be considered, as it offers one of the longest run times among generators with similar power output, reaching up to 20 hours.
  • Even though run times are undoubtedly important, they are dependent on the fuel capacity to a large extent. For a more wholesome picture, we must take into consideration the fuel consumption of the generator. With an estimated fuel consumption of 0.15 GPH at a 25% load, this inverter generator aligns with the average gasoline usage range of comparable products. If you wish to get a unit of similar power, but with one of the best fuel efficiency, you could consider the Westinghouse iGen2800c, which has an impressively low fuel consumption of 0.08 GPH.

Price comparison

As you can see from these interactive charts, when compared to other 2000-3000W inverter generators, the Generac GP3300i 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

STRENGTHS:
  • In the expected price range
  • COsense® technology
  • Parallel capable
  • Inverter
  • Lightweight (59.5 lbs)
AVERAGE SPECS:
  • Decent fuel efficiency
WEAKNESSES:
  • No data center
  • No electric start
  • Relatively low run time

Do you own the Generac GP3300i and agree (or disagree) with these strengths and weaknesses?

Let us know and write your own review.

Features and Specifications

General
InverterYes
Parallel capableYes, cable not included
RV readyNo
FuelGasoline
Engine149 cc Generac OHV 4-stroke
Starting systemRecoil
Warranty3 years
Power
VoltageAC: 120V 60 Hz, DC: 5V
Running watts2,500 W
Starting watts3,300 W
Running amps20.8 amps
Peak amps27.5 amps
Run time @50% load4.5 h
Run time @25% load7 h
Features
GFCI outletsNo
Covered outletsNo
Automatic Voltage RegulationInverter
AC outlets
  • 1x Duplex 120V 20A (5-20R)
  • 1x 120V 30A (L5-30R)
DC outlets2x 5V USB port (USB-A)
Data centerNo
IndicatorsLow oil, overload and output ready
Fuel tank1.06 gal
Fuel gaugeNo
Misc
Weight59.5 lbs
Approx. dimensions (L x W x H)22.2 x 13.3 x 18.4 in
Noise (lower limit)Unknown
THD< 3%
ComplianceEPA, ANSI/PGMA G300-2023
SecurityLow oil and overload protection, CO monitoring
Spark arrestorYes
NeutralFloating
Accessories includedOil, funnel, and tool kit
SeriesGP
Other model numbers71533
UPC696471104011

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.

Spec Improvement×

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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 GP3300i 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.
Item Running Watts Starting Watts
At home Dish washer 1500 3000
Refrigerator (energy star) 192 1192
Radio 100 100
Total 1792 W 3292 W
For camping RV AC (11,000 BTU) 1010 1600
RV refrigerator 180 600
Toaster oven 800 800
Total 1990 W 2580 W
For work Grinder 1400 2500
Drain cleaner 250 250
Electric fence (25 miles) 250 250
Bug zapper 80 80
Total 1980 W 3080 W
What is the noise rating of the GP3300i?

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

Can a 3300i be used on a RV that has a surge guard that is hard wired. (Asked June 23, 2021)

The unit has a floating neutral. Your surge guard protection device may detect this as an open ground condition and not allow power to pass through. In that case, you may need to bond the neutral.

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