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Generac

Generac 4,500/3,600-Watt Portable Gas Generator - Electric Start - Home Backup or RV Ready - Heavy Duty Frame - Quiet, Long Runtime, Emergency Power- 49-State Compliant

  • Based on 179 reviews
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Availability: In Stock.
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Arrives Wednesday, Sep 24
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Style: 3600-Watt


Features

  • Powerful Portable Performance: With Generacs PowerRush Advanced Technology, the 7721 GP3600 generator delivers 40% more starting capacity, handling heavy electrical loads with ease. Ideal for emergency power, recreation, and home use
  • Smart Protection - Stay safe with the integrated COsense technology. This smart generator can detect and alert you of hazardous carbon monoxide levels during operation, ensuring your safety at home or on the go.
  • Extended Runtime: The GP3600 boasts a long-lasting OHV engine and a large-capacity steel fuel tank with a built-in fuel gauge, ensuring you have power when you need it most
  • Built for Durability: Designed to thrive in rough environments, this generator features covered outlets for added protection, a rugged 1.25-inch steel-tube cradle for strength, and heavy-duty, never-flat wheels for easy transportation
  • Maintenance Made Easy: Keep your generator in top shape with the hour meter that tracks maintenance intervals. Plus, the low-oil level shutdown feature automatically safeguards the engine from damage, ensuring a long and reliable lifespan

Description

The 3600-watt Generac GP3600 portable generator can be used to tackle home projects, provide power for tools, or deliver essential electricity in the case of an outage. It is an especially affordable solution with premium features. These include PowerRush™ Advanced Technology — delivering over 40% more starting capacity —an OHV engine for longer engine life and a large- capacity steel fuel tank with an incorporated fuel gauge for durability. The hardened steel tube cradle provides added strength, while the low-oil level shutdown protects your engine from damage. Heavy-duty, never-flat wheels and a foldable handle make for easy transportation of the generator. The compact size of the GP3600 ensures it will take up minimal storage space in the garage.

Brand: Generac


Wattage: 3600 watts


Fuel Type: Gasoline


Power Source: gas_powered


Recommended Uses For Product: Commercial


Item Weight: 105 Pounds


Voltage: 120 Volts


Output Wattage: 3600


Special Feature: CO Sensor, Heavy Duty, Portable


Included Components: Generac 7721 GP3600 3,600-Watt Gas-Powered Portable Generator - COsense Technology - Powerrush Advanced Technology - Reliable Power for Emergencies and Recreation - 49 State Compliant See more


Brand: Generac


Wattage: 3600 watts


Fuel Type: Gasoline


Power Source: gas_powered


Recommended Uses For Product: Commercial


Item Weight: 105 Pounds


Voltage: 120 Volts


Output Wattage: 3600


Special Feature: CO Sensor, Heavy Duty, Portable


Included Components: Generac 7721 GP3600 3,600-Watt Gas-Powered Portable Generator - COsense Technology - Powerrush Advanced Technology - Reliable Power for Emergencies and Recreation - 49 State Compliant


Color: Orange/Black


Product Dimensions: 24"L x 22.5"W x 21"H


Material: Plastic


Model Name: GP3600


Engine Type: 4 Stroke


Ignition System Type: Magneto


Tank Volume: 4.7 Gallons


Engine Displacement: 208 Cubic Centimeters


Total Power Outlets: 3


Starting Wattage: 5040 Watts


Running Wattage: 3600 Watts


UPC: 696471086270


Manufacturer: Generac


Item Weight: 105 pounds


Department: Unisex-Adult


Item model number: 7721


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Sep 24

This item is non-returnable:

Non-returnable. Transportation of this item is subject to hazardous materials regulation

View our full returns policy here.

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Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • very easy to use, and is able to use both LP gas and petrol.
Style: 7500-Watt Dual Fuel
This dual fuel Generac generator has been very effective in empowering my house when I lost power.My first use was early May and I lost power for three days and it ran very efficiently, gas consumption was relative needing about 10 gallons in the three days that it was in use. It’s very easy to start and hook up. It powered most of my appliances, including refrigerator, stove, microwave, fans,my water pump, and Boiler I would recommend this to anyone who needs a generator that can power your house when you lose electricity. ... show more
Reviewed in the United States on August 12, 2025 by BIGDOG
    • Good generator
Style: 6500- Watt + Extension
It’s a generac strong machine. got good handles quieter than normal. Lotta power sources. It is a little heavy, but It do the job.
Reviewed in the United States on September 15, 2025 by Ted
    • Excellent generator for a very good price!
Style: 18000-Watt
This is a excellent generator that can handle most applications and it’s relatively simple to use fairly low noise levels
Reviewed in the United States on August 24, 2025 by Thomas Quigley
    • Excellent and convenient !!!
Style: 9500-Watt Tri Fuel
Extra convenience due to fuel flexibility, great power source and easy to start…
Reviewed in the United States on September 17, 2025 by Walner Hernandez
    • Not recommended
Style: 8000-Watt
Less then 40 hours and will not start had it looked at said Part cost over 600 dollars to fix
Reviewed in the United States on August 27, 2025 by Billy Whidden
    • Dependable, and reliable
Style: 7500-Watt Dual Fuel
Easy to assemble and it started as it should and work through it out of the box. Have not used it yet for a storm, but I’m sure it will be good as we have another Generac generator and that one has worked flawlessly
Reviewed in the United States on July 26, 2025 by ken m.
    • Parts Missing
Style: 15500-Watt
I like the build quality. I'm currently breaking in the generator, runs great. Made in USA definitely a plus. Value for the money spent is good compared to overseas models. The issue is that the axle for the wheel kit is missing from the wheel kit box. You'd expect better quality checking before shipping. Currently have been on hold w/ Generac support 25 min. I got a very nice girl to help me with this issue, so we'll see how good the support is. I'm getting the axle @ N/C under warranty. The drag is the 7-10 business days for shipping because Generac doesn't expedite shipping. UPDATE: Generac did UPS me an axle kinda quick, so kudos to them for that. Generator is running fine so far for 10hrs on brake in, only glitch was having to reset spark plug gap to proper .030 as it started to sputter a little. Spark plugs are gapped wrong from factory @ .018. I'm a auto tech so not a big deal. So far I would recommend this unit. It is well built, not bad on fuel so far & I'm picky. Also I like the fact it has AVR instead of capacitor regulation. Better for electronics. ... show more
Reviewed in the United States on October 28, 2024 by Begeiled
    • Generac generator
Style: 8000-Watt
Amazing generator. Starts quick. Not really too loud. Great for power outages. Highly recommend.
Reviewed in the United States on August 10, 2025 by Shirley Lindsay

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