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Generac GP3600 - 3600/4500W Portable Generator

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Generac GP3600Generac GP3600Generac GP3600
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Set an alert for the Generac GP3600 - Current lowest price: $449.88
Price History
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Price history for the Generac GP3600
Latest updates:
  • $449.88 - April 12, 2024
  • $479.00 - April 5, 2024
  • $589.00 - April 4, 2024
  • $499.00 - March 29, 2024
  • $589.00 - March 21, 2024
  • $479.00 - March 8, 2024
  • $589.00 - February 17, 2024
  • $529.00 - November 25, 2023
Data source: farmandfleet.com
Since: June 2, 2023
  • Highest Price: $589.00 - February 17, 2024
  • Lowest Price: $449.88 - April 12, 2024

Description

The GP3600 portable generator is an excellent choice for emergency power when backing up multiple appliances. Featuring PowerRush™ ADVANCED TECHNOLOGY, it delivers 40% more starting capacity allowing you to do more with less. (source: Generac (opens in a new tab))

Zoom on the Generac GP3600

To sum up, the Generac GP3600 is a portable generator tailored for:

  • RV travellers wishing to enhance their freedom and nomad lifestyle
  • People occasionally participating in sporting competitions, open-air performances and outdoor festivals
  • Homeowners who want to be able to use the most necessary devices in their household, even during a blackout

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

Running on gasoline, the Generac GP3600 utilizes a 212 cc Generac OHV 4-stroke engine to deliver 120V, offering a running wattage of 3,600W and a starting wattage of 4,500W.

Its starting mechanism relies on a standard recoil pull-rope starting mechanism.

Featuring a 3.7 gallons fuel tank, the GP3600 guarantees continuous power for around 9.3 hours at 50% load on a full tank (fuel consumption around 0.4 GPH).

The powering of sensitive electronic devices with the GP3600 is not recommended due to its high THD (<25%).

Outlets

The control panel provides the upcoming 5 AC outlets:

Two Duplexes 120V 20A (5-20R)
120V 30A (L5-30R) 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.

Portability

At L24 x W22.5 x H21.3 in, the traditional open frame structure of the Generac GP3600 ensures stability while facilitating convenient maintenance access to components and promoting air cooling. The design is ideal for rough environments and demanding outdoor use.

Despite its 105 lbs, the generator falls under the category of 'portable,' signifying its movability, although its weight may hinder easy portability. However, the limited maneuverability is remedied with its wheel kit (⌀8") and its folding handle, facilitating convenient shifting once the generator is positioned on the ground.

Features

Panel of the Generac GP3600

The GP3600's control panel

With a digital data center integrated into its control panel, the GP3600 provides real-time insights into the lifetime run hours, enabling easy monitoring of its status and activity.

Equipped with a built-in fuel gauge, the generator facilitates swift gas level checks.

As far as security is concerned, the generator can be used with a peace of mind, as it features an automatic low oil shut-off and an overload protection (circuit breaker).

Besides the classic documentation and an owner's manual (opens in a new tab) to get you promptly started, the Generac GP3600 also comes with some accessories: funnel, oil and tool kit are included.

The Generac GP3600 versus other generators

The following charts are provided to give you an idea of how some of the key specs of the Generac GP3600 compare to generators of similar power (between 3500 and 4500 W).

  • Since the generator weighs in at a dry weight of 105 lbs, the Generac GP3600 belongs in the expected weight range for devices which can produce between 3500 and 4500 rated watts. If you are concerned by weight, one of the champions in the above-mentioned power range is the Genmax GM4600iAEFIC, with a dry weight of just 58.4 pounds.
  • The GP3600's autonomy is somewhat low end compared to devices of its power range, as it reaches only around 9.3 hours at 50% load on a full tank. For those prioritizing autonomy, the Predator 4375 could be considered, as it offers one of the longest run times among generators with similar power output, reaching around 16 hours.
  • Run times are important, yet thanks to their dependence on the fuel capacity, they should be judged along with the fuel consumption of the device. As this generator uses an estimated 0.4 GPH (gallon per hour) at a 50% load, it finds itself in the average gasoline consumption range of similar products. To prioritize fuel savings, we advise considering the Westinghouse iGen4500DF, which stands out for its gasoline efficiency, consuming just 0.23 gallons per hour.
According to our stats, the following comparison is pretty popular: Generac GP3600 vs Generac iQ3500.

Price comparison

As you can see from these interactive charts, when compared to other 3500-4500W generators, the Generac GP3600 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
  • Several accessories included
AVERAGE SPECS:
  • Decent weight (105 lbs)
  • Decent fuel efficiency
WEAKNESSES:
  • No electric start
  • Relatively low run time

Do you own the Generac GP3600 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
Engine212 cc Generac OHV 4-stroke
Starting systemRecoil
Warranty3 years
Power
VoltageAC: 120V 60 Hz
Running watts3,600 W
Starting watts4,500 W
Running amps30 amps
Peak amps37.5 amps
Run time @50% load9.3 h
Run time @25% loadUnknown
Features
GFCI outletsNo
Covered outletsYes
Automatic Voltage RegulationYes
AC outlets
  • 2x Duplex 120V 20A (5-20R)
  • 1x 120V 30A (L5-30R)
DC outletsNo
Data centerLifetime run hours
IndicatorsNo
Fuel tankSteel, 3.7 gal
Fuel gaugeYes
Misc
Weight105 lbs
Approx. dimensions (L x W x H)24 x 22.5 x 21.3 in
Noise (lower limit)Unknown
THD< 25%
ComplianceCARB
SecurityLow oil and overload protection
Spark arrestorYes
NeutralFloating
Accessories includedOil, funnel, tool kit, and wheel kit
SeriesGP
Other model numbers7678
UPC696471074581

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.

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 GP3600 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 size calculator.
ItemRunning WattsStarting Watts
At homeElectric fry pan15001500
Refrigerator (energy star)1921192
Vacuum cleaner10751175
Radio100100
Total2867 W3867 W
For campingRV AC (11,000 BTU)10101600
RV refrigerator180600
Electric grill16501650
Total2840 W3430 W
For workGrinder14002500
Demolition hammer12601260
Bug zapper8080
Total2740 W3840 W
What is the noise rating of the GP3600?

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

What make is the engine? (Asked April 19, 2020)

The engine is Generac-branded, but neither engineered nor manufactured in the U.S.

Will this gp3600 run an electric pressure washer ? (Asked August 08, 2020)

A basic electric pressure washer usually has a 12 to 13-amp motor, which operates on 120V. 13x120=1560W.

What type of oil and when does it need to be changed (Asked August 14, 2020)

Recommended oil is SAE 10W-30. Here's the oil change schedule recommended by Generac for the GP3600:
Generac GP3600 Maintenance Schedule

What's the purpose of cleaning the spark arrestor every 50 hours ,unfortunately I bought my unit used so I don't have the manual is supposed to go it also where is the serial number located on the generac 3600 Watt unit and last question how many runtime hours before oil changes please let me know thank you so much (Asked September 05, 2021)

You may find the owner's manual here (opens in a new tab). It should give you the answers to all your questions.

Couldn't find the right answer for you? Ask your own question.

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Generac GP3600
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  1. 5
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    So far I got to say I really do like my used generac 3600 watt generator is quieter than a typical lawn mower overall seems like it would be great for camping purposes do you believe I’ll enjoy having it

    + PROS:
    • It was just what I was looking for
    - CONS:
    • No problems with it so far
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