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Generac GP3600 Spec Review

Picture 1 of the Generac GP3600
Picture 2 of the Generac GP3600
Picture 3 of the Generac GP3600

The Generac GP3600 (7678) is an open frame portable generator with a rated wattage of 3600 W and a starting wattage of 4500 W.

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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)

Zoom on the Generac GP3600

In summary, the Generac GP3600 is a portable generator especially useful for:

  • RV travellers wishing to enhance their freedom and nomad lifestyle
  • Homeowners who want to be sure of their ability to power their fridges, cooking tools, heating and lighting equipment during power failures

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

Power & Run Time

The Generac GP3600's build contains a gasoline-fueled 212 cc Generac OHV 4-stroke engine. With a 120V output, it gives a running wattage of 3600W and also a peak wattage of 4500W.

This generator gets running thanks to a simple traditional pull-start mechanism.

With a full tank, the GP3600 can operate for around 9.3 hours at 50% load (fuel consumption around 0.4 GPH), thanks to its fuel capacity of 3.7 gallons.

The GP3600 is unsuitable for the powering of sensitive electronic devices due to its relatively high THD (<25%).

Several examples of what the generator may allow you to power simultaneously are:Note: Not all of these items may be able to start at the same time. These examples are based on a maximum load of 75 % and on wattage estimates. Use our wattage calculator to find out if this product will be suitable for your needs.

Outlets

The control panel features the following 5 AC outlets:

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

While this Generac generator is not RV Ready, its L5-30R receptacle can be used for a simple RV connection with an L5-30P to TT-30R adaptor.

Portability

The Generac GP3600 has the following dimensions: L24 x W22.5 x H21.3 in. In combination with its conventional, open frame design, they provide support and allow the generator to be raised above ground level. The device has been designed for tough environments and demanding outdoor use.

Although this generator is technically considered 'portable' (in the sense that it can be moved), its 105 lbs make it incredibly difficult to manually lift and transport. Never less, it can still be moved quite conveniently with the help of a wheel kit (⌀8") and a folding handle, once it is placed on the ground.

Features

Panel of the Generac GP3600

The GP3600's control panel

To help you monitor the GP3600's status and activity, its control panel is equipped with an illuminated data center, giving you information on the lifetime run hours.

The fuel level of the generator can be determined quickly, easily, and conveniently with the help of its built-in fuel gauge.

From a security point of view, the generator is equipped with an overload protection (circuit breaker) and an automatic low oil shut-off, giving you a peace of mind during use.

Besides the classic documentation and a user manual to get you promptly started, the Generac GP3600 also comes with some accessories: oil, tool kit and funnel are included.

Emissions

The Generac GP3600 is CARB-compliant. It can therefore be sold and purchased in all 50 states, including California.

Moreover, it features a spark arrestor, making it usable in forested areas.

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).

  • Regarding its weight, the Generac GP3600 only weighs in at 105 pounds, which means it's one of the lighter generators in the 3500-4500 rated wattage range. Regarding dry weight, one of the champions in the same power range is the Energizer eZV4500, with a dry weight of only 78 lbs.
  • As for its autonomy, the GP3600, with an autonomy of 9.3 hours at a 50% load, is placed on the low end among the generators of its kind. If you consider autonomy on a single full tank as one of the deciding factors, one of the generators in the same power range that offers the highest run time is the Honda EB4000, with 16 hours .
  • While the run time is an important parameter, it is dependent on the fuel tank’s capacity and thus, doesn’t say much on its own unless we consider fuel consumption as well. Standing at an estimated 0.4 GPH (gallon per hour) at a 50% load, this generator is somewhat average in this area compared to other devices, within the aforementioned wattage range. If you are concerned with gasoline efficiency, having a fuel consumption of just 0.17 GPH, the Westinghouse iGen4200 is a device you should look out for.

Price comparison

As you can see from this dynamic chart, 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
  • Lightweight for its kind (105 lbs)
AVERAGE SPECS:
  • 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.

Where to buy the Generac GP3600?

You can easily buy your Generac generator online. You will benefit from a convenient delivery and avoid carrying the heavy package yourself. Here are a few reliable online sellers:
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Features and Specifications

General

InverterNo
PortableYes
Parallel capableNo
RV readyNo
FuelGasoline
Engine212 cc Generac OHV 4-stroke
Starting systemRecoil

Power

VoltageAC: 120V 60 Hz
Running watts3600 W
Starting watts4500 W
Running amps30 amps
Peaks amps37.5 amps
Run time @50% load9.3 h
Run time @25% loadN/A

Features

GFCI outletsNo
Covered outletsYes
Automatic Voltage RegulationYes
AC outlets2x 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
Dimensions (L x W x H)24 x 22.5 x 21.3 in
Noise (lower limit)N/A
THD< 25%
EmissionsCARB
SecurityLow oil and overload protection
Spark arrestorYes
NeutralFloating
Accessories includedOil, funnel and tool kit
Warranty3 years

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.

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 made in the USA. However, the company provides no information about the origin of their components.

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. Alternatively, you can also contact their Customer Support: 1-888-GENERAC (888-436-3722).

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