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Generac GP3500iO vs iQ2000 - The Differences

Further down the page, you'll find some explanations regarding the key similarities and differences between the Generac iQ2000 and the Generac GP3500iO.

But before checking out explanations regarding their power, portability, and features, here's a table that summarizes the main pros of each of these 2 generators:

Generac iQ2000Generac GP3500iO
Generac iQ2000Generac GP3500iO
  • Lower fuel consumption
  • Less bulky
  • Lighter
  • Handle
  • Fuel gauge
  • Higher running & starting watts
  • Higher runtime
  • More outlet types
  • More AC outlets
  • DC outlet(s)
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As the iQ2000 and the GP3500iO are both Generac generators, they benefit from the same level of quality and attention to detail.

Power Comparison

The following charts are provided to show you at a glance how the main specs of the Generac iQ2000 compare to the Generac GP3500iO.

  • Power: With a running wattage of 3000 W, the Generac GP3500iO will allow to power more appliances and tools than the 1600 running watts of the Generac iQ2000. Moreover, compared to the 2000 starting watts of the iQ2000, the GP3500iO and its starting wattage of 3500 W will give more power to start the appliances which require an additional boost to get their motor running.
  • Runtime: When loaded to 25% of their max capacity, the GP3500iO offers a higher runtime on a full tank than the iQ2000: it can operate for up to 11 hours, whereas the iQ2000 offers a maximum runtime of 7.7 hours.
  • Fuel Efficiency: With a gasoline consumption at 25% load of 0.14 GPH (gallon per hour), the Generac iQ2000 is more fuel efficient than the GP3500iO and its 0.22 GPH. The former's operation will therefore cost less in terms of the money spent on gasoline. Inverter generators like these 2 are of the most fuel efficient (and quiet) type.
  • THD: Both generators offer a low THD (<3% for the Generac iQ2000 and <3% for the Generac GP3500iO) and are therefore perfectly suitable to safely power your sensitive electronic devices.

Portability Comparison

  • Bulkiness: With dimensions of L20" x W12.6" x H16.9", the Generac iQ2000 offers a much more compact experience of power generation than the Generac GP3500iO and its L19.3" x W16.9" x H16.4".
  • Weight: Weighing 46.5 lbs, the iQ2000 is much lighter than the 74.3 lbs of the GP3500iO.
  • Portability: To the contrary of the GP3500iO, the iQ2000 benefits from a handle, to help you get a better grip anytime you wish to move your portable generator.

Feature Comparison

  • Starting System: Both devices can get running via a conventional pull-start mechanism.
  • Outlets: With a total of 3 AC outlets, the GP3500iO offers more AC receptacles than the iQ2000, which has 2 AC outlets. None of them feature GFCI outlets. The latter also offers a DC output. For more detailed information regarding all their respective receptacles, refer to the iQ2000's and the GP3500iO's product pages.
  • Data Center & Fuel Gauge: Each of these 2 portable generators is equipped with a data center allowing you to conveniently monitor some aspects of the power output. Besides that, thanks to the digital fuel fauge provided by its data center, the Generac iQ2000 provides instant visibility of the fuel level.

TL;DR

Generac iQ2000Generac GP3500iO
Generac iQ2000Generac GP3500iO
  • Lower fuel consumption
  • Less bulky
  • Lighter
  • Handle
  • Fuel gauge
  • Higher running & starting watts
  • Higher runtime
  • More outlet types
  • More AC outlets
  • DC outlet(s)
Show all offers
Show all offers
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You can compare as many generators as you wish. However, for the best results, we recommend you to compare only 2 generators at a time.

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