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Customer reviews for 3,300 / 2,500 Watt Generac GP3300i Portable Inverter Generator for
3,300 / 2,500 Watt Generac GP3300i Portable Inverter Generator
4.4 out of 5 stars
stars
565 ratings565 reviews
  1. 5 stars67% (378)
  2. 4 stars18% (103)
  3. 3 stars8% (45)
  4. 2 stars1% (8)
  5. 1 star5% (31)

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Showing 101-110 of 565 reviews
Jul 21, 2023
Reviewer name: Elmo
5 out of 5 stars
5 out of 5 stars review

good unit, started first pull out of the box!

It would be usefull to have known the derate info before purchase. The info is on page 5 in the book. 3.5% per 1000ft above sea level is significant at 10,000 ft. If I had known to reduce the expected output by 35% I would have considered a larger unit. I'll still put it to good use and the portability is wonderful.

Review from generac.com
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Feb 2, 2021
Reviewer name: LarryD
5 out of 5 stars
5 out of 5 stars review

Excellent

Bought this generator because I could not find the generator that I was looking for- turned out I got a better generator at a better price! Light weight compared to other generators in its class, very quite and looks great. I recommend this generator to everyone I meet. I’ve demonstrated it several times to other campers as we travel across America.

Review from generac.com
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Jun 12, 2020
Reviewer name: FJB
4 out of 5 stars
4 out of 5 stars review

Good product and excellent customer support.

I bought this generator less than a year ago. For some reason it used to surge after a few hours of operation. At the beginning started failing after 4-5 hrs of continuous operation, initially a smaller surge, just little variation on the rpm’s but getting bigger to the point of shutting itself down. Lately the problem used to start after only a few minutes of operation. I took it to the authorized service center where they try to fix it. Initially they thought it was a fouled carburetor but to their surprise it was completely clean(I run the gen on marine gas without alcohol plus I add additives) so after getting in touch with technical support at Generac they decide the problem came from the inverter/computer. After replacing the part the generator improve a little bit but the problem was still there so Generac without any complaints sent me a new one. Kudos for their great customer support. I received the new generator 2 days ago and today will be the first time using it in a camping trip, hopefully it won’t have the same issue.

Review from generac.com
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Dec 19, 2016
Reviewer name: Slapshot1960
5 out of 5 stars
5 out of 5 stars review

Nice and Quite

Purchased 2 of these portable generators for our RV they are very quite and run great. We like the features on the gas gage and how many hours left till empty are awesome no longer waiting till they run out to see to put in more gas. Takes out the guessing game, also like the feature on how much power your consuming as well.

Review from generac.com
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May 10, 2025
Reviewer name: DGWI
5 out of 5 stars
5 out of 5 stars review

Great new iQ model to the lineup!

Great new product from Generac. We also have their other iQunit, iQ3500, which we use for camping and other needs but needed something with more functionality and ability to connect to our LP tank which this product solves our need. Super quiet, easy to start and move around with the added wheels vs the prior model.

Review from generac.com
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Nov 29, 2017
Reviewer name: Prufta
5 out of 5 stars
5 out of 5 stars review

Quiet and Reliable

I was seeing many portable generators and I decided to buy this product because of the power capacity reviews. I bought it and put it to the test with the refrigerator, television and fan and generator went for 9 hrs of usage with 1 gallon. Love it's performance. Recommended

Review from generac.com
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Nov 7, 2022
Reviewer name: Joe67
5 out of 5 stars
5 out of 5 stars review

Easy Starting, Light Weight & Powerful

I needed a generator; out power went out and my 35-year-old PowerMate 800 would not start. I wanted something light weight and with enough power to keep my sump pump and refrigerator running. The GP2200i fit the bill perfectly. Easy to setup - just add the oil included in the box using the funnel included and fill it with gas. One pull and it started. Very quiet running, I filled the tank every 6 hours or so, it never ran out of gas. Had it running for almost 2 days solid. It kept the sump and refrigerator running with no problem. I highly recommend the Generac brand. Built in the USA in Milwaukee!

Review from generac.com
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Mar 29, 2024
Reviewer name: ZMaster
2 out of 5 stars
2 out of 5 stars review

Hard to start and you can’t get to the spark plug.

Because it’s kind of an idiot proof user interface. You can’t turn the gas off, so I’m sure it floods itself regularly. If you want to check the spark plug you can’t because the sound insulation is cockeyed to the plug so you can’t get a socket on it I might have to take a knife to it, or just buy a Honda.

Review from generac.com
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Apr 19, 2025
Reviewer name: quratulq_5849
5 out of 5 stars
5 out of 5 stars review

General Power system

[This review was collected as part of a promotion.] I received the Generac iQ3800 from Influenster. And it’s been an absolute game-changer for backup power and outdoor use. The dual fuel capability (gasoline and propane) offers great flexibility, especially during emergencies when fuel availability can be unpredictable. Maintenance is easy. And it’s quieter than other generators.

Review from generac.com
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Jun 16, 2023
Reviewer name: JohnnyRV
5 out of 5 stars
5 out of 5 stars review

Great Generator

Bought this generator to power my RV for off grid camping. Have only been out with it once so far but are very impressed with it. Starts like a dream and easily powers my AC and other things. Runs very quiet on economy mode. My only suggestion is that it needs wheels since it’s quite heavy to lift.

Review from generac.com
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