Zoom on the Generac GP3600
In a nutshell, the Generac GP3600 is a portable generator mostly geared towards:
- RV travellers wishing to enhance their freedom and nomad lifestyle
- People occasionally participating in outdoor fairs, festivals or events
- Homeowners who want to be able to use the most necessary devices in their household, even during a blackout
Power & Run Time
The Generac GP3600's design includes a gasoline-fueled 212 cc Generac OHV 4-stroke engine. With a 120V output, it gives a running wattage of 3,600W and also a peak wattage of 4,500W.
This generator features a simple traditional pull-start mechanism.
Thanks to a fuel capacity of 3.7 gallons, the GP3600 can operate for around 9.3 hours at 50% load with a full tank (fuel consumption around 0.4 GPH).
The quite high THD (<25%) of the GP3600 makes it unsuitable for powering sensitive electronic devices.
The control panel provides the upcoming 5 AC outlets:
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.
The Generac GP3600 has a conventional, open frame design, of the following dimensions: L24 x W22.5 x H21.3 in, which offers support and allows it to be raised above ground level. This type of design is ideal for tough environments and heavy outdoor use.
While the generator is considered to be technically 'portable' (in the sense that you can move it), manually lifting and transporting it may be challenging, due to its high weight of 105 lbs. However, this lack of maneuverability is compensated by its wheel kit (⌀8") and its folding handle, with which you can conveniently shift it, once it's on the ground.
A digital data center, one of the features of the GP3600's control panel, gives you information on the lifetime run hours, and thus, is helpful for the monitoring of its activity and status.
A built-in fuel gauge allows for a quick, easy and convenient check of the fuel level of the generator.
Security-wise, this product benefits from an overload protection (circuit breaker) and an automatic low oil shut-off, which gives you a complete peace of mind when using it.
Along the basic documentation and an owner's manual (opens in a new tab), useful for starting the generator right away, the Generac GP3600's package also includes these accessories: tool kit, oil and funnel.
The Generac GP3600 is CARB-compliant. Thus, selling and purchasing this generator is allowed in each of the 50 states, including California.
Moreover, it features a spark arrestor and therefore, can be used 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).
- At a weight of 105 pounds, the Generac GP3600 places in the expected weight range of the generators in the 3500-4500 rated wattage range. If weight is your top priority, one of the champions in this power category is the WEN GN400i, weighing just 66.1 pounds.
- Autonomy-wise, with around 9.3 hours on a full tank at a 50% load, the GP3600 is on the low end when compared to other generators of a similar power output. If concerned with autonomy, one of the products of a comparable power output, which offers the highest run time, is the Predator 4375, boasting with 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. If you wish to further improve in the area of fuel efficiency, the Westinghouse iGen4500DF, which boasts with a gas consumption of only 0.23 GPH, may be the right generator for you.
As you can see from this interactive 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
- Several accessories included
- Decent weight (105 lbs)
- Decent fuel efficiency
- No electric start
- Relatively low run time
Features and Specifications
|Engine||212 cc Generac OHV 4-stroke|
|Voltage||AC: 120V 60 Hz|
|Running watts||3,600 W|
|Starting watts||4,500 W|
|Running amps||30 amps|
|Peak amps||37.5 amps|
|Run time @50% load||9.3 h|
|Run time @25% load||Unknown|
|Automatic Voltage Regulation||Yes|
|AC outlets|| |
|Data center||Lifetime run hours|
|Fuel tank||Steel, 3.7 gal|
|Approx. dimensions (L x W x H)||24 x 22.5 x 21.3 in|
|Noise (lower limit)||Unknown|
|Security||Low oil and overload protection|
|Accessories included||Oil, funnel, tool kit, and wheel kit|
|Other model numbers||7678|
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.
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.
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?
|Item||Running Watts||Starting Watts|
|At home||Refrigerator (energy star)||192||1192|
|Set of 5 LED light bulbs||55||55|
|Total||2857 W||3857 W|
|For camping||Radiant heater||1300||1300|
|RV AC (11,000 BTU)||1010||1600|
|Total||2860 W||3450 W|
|Total||2740 W||3840 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)
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.