Generac 7128 GP Series 3500iO Portable Generator with Open Frame, 3000 Watts


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SKU: 12304725
MFG: 7128


The Generac GP3500iO open frame inverter featuring new, advanced PowerRush technology delivers over 50 percent more starting capacity for tools and other motor-driven equipment—so you can do more with less.* Both quieter and lighter, it's the ideal portable solution for camping, powering your RV essentials or tools.

  • PowerRush technology delivers over 50 percent more starting capacity for tools and other motor-driven equipment—so you can do more with less*
  • 50 percent quieter for noise sensitive environments**
  • 25 percent lighter, helping reduce fatigue while improving portability**
  • True power technology - clean power for sensitive electronics
  • Clean power for sensitive electronics with TruePower
  • USB ports charge mobile devices including smart phones and tablets
  • Parallel ready connect two GP3500IO inverter generators for twice the power
  • Generator Status Lights alert when unit is low on oil, overloaded or ready to use
  • One simple-to-use dial that integrates start/run/stop functions with PowerDial.

**Compared to Generac GP3300

*Increases electrical current upon demand; above rated output when starting electric motors.


  • AC Rated output running watts: 3000
  • AC Maximum output starting watts: 3500.

The Power to Live

  • Many get their first introduction to portable generators when they need emergency power. During a power outage, Generac portable generators make sure the most important items—lights, refrigerators and freezers, sump pumps, even space heaters and window air conditioners—are up and running, minimizing any disruption to your lifestyle.

The Power to Work

  • Utility power isn't always available where and when you need to tackle home improvement projects. Take a Generac portable generator to that far corner of your property instead of running lengthy extension cords. Or rely upon portable power if you need to turn off utility power for extensive home improvement work.

The Power to Play

  • Roughing it is only fun until you can’t make a cup of coffee or charge your cell phone. Bring a Generac portable generator to your next tailgate party or camping trip and you’ll have all the comforts of home wherever you are. Power kitchen appliances. Charge personal electronics. Watch TV or listen to music. Generac portable generators ensure the good times roll.
WARNING: Cancer and reproductive harm -