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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 271-280 of 565 reviews
Feb 2, 2021
Reviewer name: Otis
4 out of 5 stars
4 out of 5 stars review

An almost perfect generator

I bought 2 of the Generac GP3000i generators. Both are very, very quiet and easy to use. I can run our RV air, refrigerator and charge a golf cart at the same time on a single unit, but I like the parallel kit when I need a little more. I wish there was a way to do an extended run fuel system to get longer run time between gas refills. I think at this price point it should also have a built in hour meter. The little door at the top to access the spark plug flies off of both of them when it is in the bed of my truck and should really be better designed. One of the generators has less capability than the other and goes into fault mode randomly. We will see what customer service is like to correct that issue. I would buy another one if I needed it.

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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Jun 29, 2020
Reviewer name: Bgamb2
5 out of 5 stars
5 out of 5 stars review

Super quiet!

Bought this portable for my camper as a backup and for state parks where there isn’t any electrical hookups. Went with Generac because i also have a 17KW on my home. Excellent brand! I was surprised by how quiet this guy is. You walk 10 feet and it is like its barely audible. I recommended it to my friend who was looking for one. He bought the same model (iq 3500) and he is also thrilled! I can highly recommend this generator for performance, affordability and looks.

Review from generac.com
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Apr 18, 2025
Reviewer name: jimmyg5_9868
5 out of 5 stars
5 out of 5 stars review

Very quiet and easy to maintan

[This review was collected as part of a promotion.] I’ve been using the iQ3800 for home backup during storms and weekend RV trips—and it’s been outstanding. It kicks out 3,800 starting watts (3,100 running) on gas or 3,420/2,790 on propane, giving me flexibility when fuel is tight. Despite its power, it stays impressively quiet, so I can run it overnight without bothering the neighbors. Built with a rugged steel frame and protected outlets, it’s held up to bumps and rough handling, and the Eco‑Mode™ engine control delivers smooth, efficient performance under varying loads. I love the electric start (with manual backup) and the Smart CO™ shutoff for safety. Routine upkeep is a breeze thanks to tool‑free access to the oil fill and air filter. For reliable, low-noise power and minimal maintenance whenever and wherever I need it, the Generac iQ3800 has been a fantastic, peace-of-mind investment.

Review from generac.com
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Nov 30, 2018
Reviewer name: saltydog
5 out of 5 stars
5 out of 5 stars review

IQ3500

I just purchased a IQ3500. The unit came with everything needed less the gasoline. I read the manual and filled the unit with the provided oil, added 100% gas and fired it up. It started immediately and ran great. Ultra quite and very smooth. I plugged in some lights for a lite load and ran it for 1.5 hours. I shut it down and checked the oil level. I am very happy with my purchase. This is my second Generac generator that I own. My older one is an 11 year old 7500 watt and still runs like new. Thanks for building reliable products!

Review from generac.com
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Jun 18, 2025
Reviewer name: Fr Guido Sarducci
3 out of 5 stars
3 out of 5 stars review

Not Quite Adequate for RV AC

Despite it saying it will power a single rv ac, NOPE‼️ At least not here in Moab Utah. Keeps throwing a engine code on the control panels. Unit stays running but doesn't generate any power. And it doesn't throw the units breakers. My 30yr old Makita 3500 watt powered it just fine, but, it was much louder and thought the quieter unit would do the trick...WRONG‼️

Review from generac.com
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Jun 16, 2025
Reviewer name: rachelw109_2520
5 out of 5 stars
5 out of 5 stars review

Efficient and easy to use

[This review was collected as part of a promotion.] The generator is somewhat heavy and I definitely needed my husband’s help to get everything all set up. Once it’s all put together, it is easy to roll around. My dad has a very old generator and compared to that this generator is pretty quiet. It runs smoothly and doesn’t burn through fuel. The panel is easy to read in the instruction manual was helpful. This is a solid unit and I’d highly recommend it as it is easy to use as well.

Review from generac.com
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Feb 28, 2023
Reviewer name: Whippinwill
5 out of 5 stars
5 out of 5 stars review

Awesome Generator

I purchased my first 3500iq took it home and fired it up ran it through the break in period it ran perfect until I plugged in my 1500 watt heat gun.. it started to make a loud howling noise unplugged the heat gun and noise was gone… done this several times noise still there called the dealer that sold it to me and the next day I had a replacement… I’ve been using my replacement lots and it’s been working perfect…super quiet and good on fuel…I am very happy with it… Thank you to the dealer for being swift on the replacement Highly Recommend

Review from generac.com
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Feb 18, 2021
Reviewer name: Fh
5 out of 5 stars
5 out of 5 stars review

Quiet and smooth

Like so many others, we are experiencing fairly frequent outages. Most are quite brief but recently we had one that lasted all day. If it hadn’t been warmer weather we might have had a problem. So.,.. we took the plunge and bought a generator. Since we live on a townhouse and don’t own it, I decided to buy something with enough capacity for the essentials. I also wanted to be able to run as cord to the neighbours to keep them in heat as weIl. It also had to be quiet and reliable. Portability was important. I found everything I wanted in this model. I’m presently making a storage box to keep it outside do I don’t have to carry it up from the basement although it’s doable. I would recommend this product. As a matter of fact, I recommended Generac to my mother and sister in law. They got a larger one since they had the space and wanted something to run more things in the house. Noise level also wasn’t as big a factor for them.

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Feb 3, 2022
Reviewer name: Kayak54
3 out of 5 stars
3 out of 5 stars review

Began positive

I have had several carb issues. I worked where we sold Generac generators, and always spoke highly of them. I owned a GP5500 prior w/ few problems. I always kept ethanol free gas or gas w/ Stabil in my IQ3500 . Which purchased 9/2019. I had one carb replacement a year ago ,after a month wait for parts from Generac. It would start but not run and the ECO setting would shutter and shut the engine off. Now it is repeating problems, after only being run on ethanol gas for less than 1 hour. We used it to run the 13.5K A/C or to run heater fan and charge RV batteries. We were able to do one or the other at a time. It was never able to pull the 25 Amp specs.

Review from generac.com
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