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Portable Gas Generators for Rent

You can trust United Rentals' fleet of portable gas generator rentals. Our small, medium and towable gas generators are ideal for light-duty commercial jobs or providing emergency backup power when needed.

For our full list of gas generators, view the items below. For more information about gas generators, visit our resource section.

Portable Generator Pack Shot
Cat Class Code
240-2981

2,000-2,400 W Portable Generator, Gas

  • 2,000-2,400 watt output depending on model
  • 120V
  • 1 gallon fuel capacity
  • Inverter units may be available, depending on location
  • Uses: Ideal for light-duty jobs or use as an emergency power source
Yellow Wacker-Neuson portable inverter generator
Cat Class Code
240-2991

2,500-2,900 W Portable Generator, Gas

  • 2,500-2,900 watt output depending on model
  • 120V
  • 1-3.2 gallon fuel capacity depending on model
  • Inverter units may be available, depending on location
  • Uses: Ideal for light-duty jobs or use as an emergency power source
Portable Generator Pack Shot
Cat Class Code
240-3001

3,000-3,400 W Portable Generator, Gas

  • 3,000-3,400 watt output depending on model
  • 120/240V
  • 2.6-5.5 gallon fuel capacity depending on model
  • Inverter units may be available, depending on location
  • Uses: Ideal for powering tools such as compressors, grinders and fusion welders
Compact Generator Pack Shot
Cat Class Code
240-3006

3,500-3,900 W Portable Generator, Gas

  • Electronic ignition
  • Run time up to 5 hours on 1 tank of fuel
  • Gasoline powered
  • Built with heavy-duty frame
  • Uses: Ideal for powering tools or equipment for up to 5 hours on 1 tank of gas
  • Add this portable generator to your cart now
Portable Generator
Cat Class Code
240-3041

5,000-5,400 W Portable Generator, Gas

  • 5,000-5,400 watt output depending on model
  • 120/240V
  • 5.5-6.2 gallon fuel capacity depending on model
  • Inverter units may be available, depending on location
  • Uses: Ideal for powering tools such as compressors, grinders and fusion welders
Yellow Wacker-Neuson portable inverter generator
Cat Class Code
240-3051

5,500-5,900 W Portable Generator, Gas

  • 5,500-5,900 watt output depending on model
  • 120/240V
  • 5.5-6.6 gallon fuel capacity depending on model
  • Inverter units may be available, depending on location
  • Uses: Ideal for powering tools such as compressors, grinders and fusion welders
Red Multiquip portable inverter generator
Cat Class Code
240-3056

6,000-6,400 W Portable Generator, Gas

  • 6,000-6,400 W output depending on model
  • 120/240V
  • 5-7.3 gallon fuel capacity depending on model
  • Inverter units may be available, depending on location
  • Uses: Ideal for powering tools such as compressors, grinders and fusion welders
Yellow Wacker-Neuson portable inverter generator
Cat Class Code
240-3061

6,500-6,900 W Portable Generator, Gas

  • 6,500-6,900 watt output depending on model
  • 120/240V
  • 5-6.2 gallon fuel capacity depending on model
  • Inverter units available
  • Uses: Ideal for powering light towers and multiple tools or appliances
Black Mi-T-M portable inverter generator
Cat Class Code
240-3071

7,500-7,900 W Portable Generator, Gas

  • 7,500-7,900 watts output depending on model
  • 120/240V
  • 7.3 gallon fuel capacity
  • Electric starter type
  • Uses: Ideal for powering light towers and multiple tools or appliances
Orange and black Generac portable generator
Cat Class Code
240-3076

8,000-8,400 W Portable Generator, Gas

  • 8,000-8,400 watt output depending on model
  • 120/240V
  • 6.6-7.9 gallon fuel capacity depending on model
  • Electric and recoil starter type
  • Uses: Ideal for powering light towers and multiple tools or appliances
Yellow Wacker-Neuson portable inverter generator
Cat Class Code
240-3091

9,600-9,900 W Portable Generator, Gas

  • 9,600-9,900 watt output depending on model
  • 120/240V
  • 10 gallon fuel capacity
  • Electric starter type
  • Uses: Ideal for powering light towers and multiple tools or appliances
Cat Class Code
240-3101

10,000-11,900 W Portable Generator, Gas

  • 10,000-11,900 watt output depending on model
  • 120/240V
  • 16.4 gallon fuel capacity
  • Electric or recoil starter type
  • Uses: Ideal for powering light towers and multiple tools or appliances
Resources

FAQs About Gas Generators

Find the right gas generator rental for your next project from our fleet of products, including inverter generators. Our full fleet includes construction-grade units loaded with quality features and various power outputs ranging from our base 2,000-watt gas generators to our robust 11,900-watt generators to satisfy even the most demanding applications. We carry equipment made by top manufacturers like Multiquip, Honda and more.

Learn more about our portable gas generators below.

Do you have to ground a portable gas generator?

According to OSHA requirements, the frame of a portable gas generator does not need to be grounded (connected to earth) because the frame serves as the ground, replacing the grounding electrode.

How long can a gas generator run?

This depends on the fuel capacity of the gas generator in question, however most gas generators will run between 8-12 hours on a full tank. There are naturally exceptions, and our smallest gas generator runs for about an 5 hours on a full tank, while our larger models can run for twice as long.

What size gas generator do I need?

Gas generators come in various sizes and should be selected based on the amount of running wattage needed to power the connected equipment. Learn more about how to select the right size mobile generator rental for your next project.