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GP3500iO 3500-Watt Inverter Generator

Ratings & Reviews for Generac GP3500iO 3500-Watt Inverter Generator

4.4
553
Review
 4.4 out of 5
553 Reviews


89% Recommend this product

Ratings may include incentivized customer reviews.

What Customers Are Saying

The Generac iQ3800 Dual Fuel Inverter Generator offers reliable, clean, and flexible power. Key features include dual fuel capability, quiet operation with an Economy Mode, easy push-button electric start and pull-start options, integrated wheels and handle for portability, and intelligent LED display. Customers report the generator has performed flawlessly, powering essential appliances and electronics during power outages or on camping/RV trips. They praise its fuel efficiency, durability, and overall quality. A few customers experienced minor issues, but most were satisfied with the generator's performance and value.

Customer review summary generated by AI, including incentivized reviews.
553 Customer Reviews

Great Generator

Would Recommend

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.

June 16, 2023

From generac.com

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MarketingJune 21, 2023

It is quieter than my honda

Would Recommend

Can’t believe it doesn’t have a fuel shut off valve. Other than that it’s fine.

June 15, 2023

From generac.com

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MarketingJune 15, 2023

Quiet and powerful

Would Recommend

Started old generator and scared the neighbors. Bought the This generator and you can sit beside it and chat normally. Runs AC and everything in the RV.

June 14, 2023

From generac.com

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MarketingJune 15, 2023

So far so good.

Would Recommend

So far it’s done me good, only issue I’m having is finding a maintenance kits for my iq3500. Oil , spark plug, air filter etc.

June 5, 2023

From generac.com

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MarketingJune 5, 2023

Good so far

Would Recommend

Quieter than my Honda, but lacks fuel shut off valve.

May 29, 2023

From generac.com

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MarketingMay 30, 2023

Love this generator

Would Recommend

I was on the hunt for a generator for my RV. I wanted one that would easily run my AC in my camper and not be maxed out. I found this one. It’s exceeded my expectations. I ran the generator in the bed of my truck while I slept in my camper in the parking lot of a cracker barrel’s parking lot. It was so quiet that I only heard the generators from the Motor homes around me. It kept my AC running all night. I expected to wake up to a generator that was out of fuel. I was surprised to see that I sti...

April 6, 2023

From generac.com

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MarketingApril 7, 2023

Very happy on first day

Would Recommend

I looked around at many different kinds of generators before my purchase I just mine lots so in 30 days I will redo another one with updates and happiness of product

March 21, 2023

From generac.com

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MarketingMarch 22, 2023

Out of the box

Would Recommend

Purchased in early spring for summer camping. Did not use until December and first time running started right up. Let it warm up and would not run with choke off. Ran under load for approximately 8 hours and had no other issues. The problem is that it would have to be almost full choke to run. Took it in for repairs and was told the carburetor needed to be replaced. Contacted manufacturer after service center stated is was not covered under warranty and the manufacturer said same thing. I am rep...

March 14, 2023

From generac.com

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Thank you for the review, we appreciate your feedback. We recommend contacting our customer support team at 888-436-3722 as they will be better able ...

MarketingMarch 15, 2023

Unbelievably simple to use!

Would Recommend

We live in SW Florida and decided to buy a generator for future power outages. Have not had to use it until today. Power went out 1.5 hours ago. This is the first time we have used it. Dumped some gas in and it fired on the first pull. That never happens to me! 10 minutes after the power went out I had the fridge, some lights, a fan and some other minor things plugged in with room to spare. So simple and I am far from a handy guy. Highest marks from me

March 8, 2023

From generac.com

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MarketingMarch 10, 2023

Generac 2500i Inve

Would Not Recommend

Purchased this machine in May,2021 from the local Ace. Put fuel in and oil and it started after a few pulls. Then my power went out and needed to use it. Took several pulls to finally start it. With just a refrigerator plugged in, it was running rough. But it saved the food in my fridge. A couple weeks ago, it wouldn't start at all. I thought there's got to be an issue and should be covered under warranty. Nope, fuel issues. Gummed up carburetor.Not covered under warranty. Cost m...

February 28, 2023

From generac.com

Response from Marketing

Thank you for the review, we appreciate your feedback. We recommend contacting our customer support team at 888-436-3722 as they will be better able ...

MarketingMarch 1, 2023

Awesome Generator

Would Recommend

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 be...

February 28, 2023

From generac.com

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MarketingMarch 1, 2023

Does not provide output power matching specs

Would Not Recommend

This generator is supposed to deliver 2200w running power but we have found it automatically shuts down when we connect a load of 1700w. It does run well with a load of 1300w. The size and weight of the generator is great and it doesn't make too much noise. The run time is rather short due to its small size so limited capacity gas tank.

February 27, 2023

From generac.com

Response from Marketing

Thank you for the review, we appreciate your feedback. We recommend contacting our customer support team at 888-436-3722 as they will be better able ...

MarketingMarch 1, 2023

Got me through a 4 day power outage

Would Recommend

Power was out from 8PM on Wednesday to 11:30AM Sunday. This little machine ran flawlessly with nothing more than a couple refuels. Ran my furnace, refrigerator, a couple lights, my TV, and my CPAP machine with barely a hiccup. Ran for over 8 hours if not 10 on a single fuel up. Just need to change the oil and check the spark plug so it's ready for a monthly test and hopefully stays in the garage for a very long time. Good to know it is there when needed. Maybe a camping trip or two this summe...

February 27, 2023

From generac.com

Response from Marketing

Thank you for taking time out of your day to provide us with your valuable feedback. If you run into any questions, please give us a call at 888-436-3...

MarketingMarch 1, 2023

Super quiet

Would Recommend

Just bought and made a testing. Pros: Easy setup. Easy to start. Super quiet! If you turn the corner of the house you almost do not hear does it is running or not! Verify with different loads (from light up to 2 kW) Not really a Con: Wheels absences! Generac, please add an option to buy a wheels kit for your very good iQ3500! Why a customers should play a game with Honda Wheel kit, Caster's wheel kits and so on? I feel ready for power outage and highly recommend this little generator for ex...

January 15, 2023

From generac.com

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MarketingJanuary 17, 2023

Buffalo, NY Christmas Blizzard

Would Recommend

Have a 5000w Coleman Powermate that I started at 8:30AM Friday 12/23 when the power went out. Didn't have it covered and after 2 hours it was coated with snow and ice and died. I purchased the GP3300i for use with a travel trailer and am glad I had it in the garage. Took it out back and ran a heavy cord through the garage and into the house. Ran it 3 to 4 hours at a time, rest it for a while and start it up again. Powered the refrigerator and freezer one at a time. Total of 28 hours, it just ran...

December 28, 2022

From generac.com

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Thank you for taking time out of your day to provide us with your valuable feedback. If you run into any questions, please give us a call at 888-436-3...

MarketingJanuary 3, 2023

Great Product

Would Recommend

I bought this generator because I needed something lighter and easier to handle. Have no problems whatsoever with my generator. The only issue I have is I would love to have a wheel kit for my GP3300i, when I go online the only kit they show on all sites is for the 3500 model.

November 27, 2022

From generac.com

Response from Marketing

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MarketingNovember 28, 2022

More Power

Overall great unit. However, room for improvement on power options and design. Pro's - Super Quiet and Fuel Efficient. Cons - Not available in bigger options. Would love to see something in the 4000-5000W range with some sound dampening. Or, design a cover for your open frame options. Lastly, please add some wheels to this thing!

November 24, 2022

From generac.com

Response from Marketing

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MarketingNovember 28, 2022

Great Product GP2500i

Would Recommend

I purchased back in February of 2021 after a few days of a hard freeze in Oregon. I added as a 2nd generator for all around use. Finally took out of box (11/2022) LOL! All prepped up. Not too bad! Generator is lightweight, started on third pull, quiet. So far so good. Future plans would be getting a 2nd one, with parallel kit. Generator will be great for home, outdoor activities. Ill test more and put a review back up.

November 16, 2022

From generac.com

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Thank you for taking time out of your day to provide us with your valuable feedback. If you run into any questions, please give us a call at 888-436-3...

MarketingNovember 17, 2022

Outstanding Value

Would Recommend

I was shopping for a generator inverter to cover my basic needs in the event of interruptions or failure of our electrical grid locally as well as nationally, especially in the very uncertain times in which we live. I considered the top of the line units all the way down to the extremely basic. Generac covered all the bases for me. Generac has a long history manufacturing time proven dependable generators of nearly every kind.The GP2200i provides the minimums needed to efficiently run all the ap...

November 15, 2022

From generac.com

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Thank you for taking time out of your day to provide us with your valuable feedback. If you run into any questions, please give us a call at 888-436-3...

MarketingNovember 16, 2022

Easy Starting, Light Weight & Powerful

Would Recommend

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 sum...

November 7, 2022

From generac.com

Response from Marketing

Thank you for taking time out of your day to provide us with your valuable feedback. If you run into any questions, please give us a call at 888-436-3...

MarketingNovember 8, 2022