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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

perfect for a small boat

Would Recommend

bought this for overnights on the boat that does not thave air. quieter than i thought. makes boating a little more comfy.

September 1, 2021

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...

MarketingSeptember 2, 2021

Lasted as long as the warrantie

Would Not Recommend

Did my research and decided to buy a gp3000i, mainly to run the AC on my 28 foot rv. Used it a few times during power outages, etc did fine. Kept a log on how many hours, when it ran last, etc. trying to maximize my investment so the gen would last. Made a cover to keep it clean and protected. Took the trailer on a 5 month trip this year and was using just to run the ac during the heat of the day. It started failing by just quiting. It would restart ok and keep running for a while till it died a...

August 27, 2021

From generac.com

Used twice and issues- now prepping for storm and no luck

Would Recommend

I purchased this generator two years ago I have since used twice, draining it regularly as well as running it as needed. 1- I recently tried to start and at first pull the recoil did not work. It took about 30 soft pulls and me walking away for it to retract. 2 - purging, I don’t know if this is normal but it purges when it ran and now it won’t run, cleaned the carb from sitting- even without fuel. And ran for 30 second then have to pull it again 3. Service, I just looked up and the cl...

August 17, 2021

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...

MarketingAugust 18, 2021

Got it done

Would Recommend

I bought the 3000. Lived off it for a few days after hurricane Sally. It powered the full sized refrigerator, an electric cooktop, television, surround sound, phone/laptop chargers throughout the entire power outage. Its easy to carry and surprisingly quiet.

August 15, 2021

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...

MarketingAugust 16, 2021

Get what you pay for

Would Recommend

Definitely not the cheapest, but it'll be worth the money in the long run. All features are as advertised, quiet, powerful, LCD screen provides very useful information. Parallel kit to use two at once works perfect as well. Would recommend to anyone. However, NO WHEELS. Being an inverter generator, this is heavy. So I was surprised when I could not find a wheel attachment for this. It would make moving around so much easier.

August 9, 2021

From generac.com

Response from Marketing

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MarketingAugust 10, 2021

Very pleased

Would Recommend

Purchased through Amazon, arrived in a timely manner in perfect condition. Unpacked, added oil and ethanol-free gas, it started on the 2nd pull. Very satisfied with how quiet it is, will be using it with a small travel trailer. Let it run for 20 minutes with a light load, then shut down. A few hours later it started first pull and I connected to the trailer and started the A/C. The generator was only about 2 feet from the trailer and I couldn't hear it inside with the A/C running. Let it run for...

August 1, 2021

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...

MarketingAugust 2, 2021

This generator saved our business after the July 28 storm knocked out power in Ripon, WI

Would Recommend

We are the owners of J&G's Place 2B, a bed and breakfast in Ripon, WI. A massive storm hit Ripon and surrounding areas on July 28, 2021 and shortly after midnight we lost power during the middle of EAA Airventure, when Oshkosh hosts the world's largest airshow for a week. This is also the busiest week of the year for our business. A requirement for a bed & breakfast license is that you MUST HAVE HOT WATER, otherwise you are to close immediately. We were looking at a couple of thousand of dollars...

July 31, 2021

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...

MarketingAugust 2, 2021

Problems starting

Would Recommend

We like how quiet the generator is. We have problems starting the generator if it has not been started in a couple of months.

July 28, 2021

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...

MarketingJuly 29, 2021

Bought two (2) GP3300I

Would Recommend

Purchased on Amazon and they arrived in excellent condition. Set-up was very easy and both units started on the third pull with a fresh tank of gas. I am vey pleased with the noise level of these units and they should serve their purpose during a power outage, camping or tailgating. They are an appropriate size and weight for the power output and the price was ~$800 less than the two (2) Honda units with less running wattage. The only "wish list" item would be a larger fuel capacity, but...

July 27, 2021

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...

MarketingJuly 28, 2021

Very Quiet As Advertised

Would Recommend

I purchased this for the same reason as many others. I wanted a reliable power supply for my travel trailer. I also wanted something quiet so others wouldn't be annoyed at camping areas. Set up was simple. Connect the battery, put in the oil and gas and it is ready to go. Started right up and ran smooth and quiet. However, while running, I heard a slight vibration noise that didn't sound normal. After a little investigation I saw that one of the standing frame supports was cracked whe...

July 6, 2021

From generac.com

Response from Marketing

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MarketingJuly 8, 2021

Voltage output

Would Recommend

Does the IQ 3500W Have a 220v output. Here in south Africa we have 220v ac not 120

June 30, 2021

From generac.com

Response from Marketing

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MarketingJuly 2, 2021

Powerful and quiet

Would Recommend

I bought the GP3000i for my camper and I am impressed that I could run everything even the 8000 watt a/c without any problem. It’s fairly lightweight and fits right under the camper to keep it out of the direct sun or rain very happy with this product, oh and easy starting also!!

June 27, 2021

From generac.com

Response from Marketing

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MarketingJune 29, 2021

Great little unit

Would Recommend

Nice and quiet for the summer power outages in tx. Nice and light easy to store

June 22, 2021

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...

MarketingJune 28, 2021

Don't be 'one of those guys' while camping

Would Recommend

I bought this to use with our 26 ft. camper. Sites with hook-ups are becoming more difficult to get with the increase in post-pandemic campers. I wanted to have full use of my camper but didn't want to listen to (or have my neighbors listen to) a loud, open-frame generator. This generator is SO quiet. It is barely louder than ambient noise at the campground when sitting in our site, and is virtually in-audible by the time you are 50 ft away. Set up was super easy. Connect battery cables....

June 22, 2021

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...

MarketingJune 28, 2021

I have tried another of small generators and I should of gotten this year's ago

Would Recommend

This is a very economical generator good power with excellent fuel usage. I uses for portable power when I am traveling for work. This is one of the quietest generators I have ever had and used in the portable line. I definitely recommend this generator if anybody is looking for a small compact generator that is very easy to move and very portable. This is a replacement generator for a much more expensive generator that if I'd known this generator was as good I would have bought this generator a...

June 1, 2021

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...

MarketingJune 2, 2021

Guage required for 50ft extension

I need to connect the 2200i to 50ft extension cable to run fridge/ freezer & tv & some lights from one of the standard plug sockets. What guage extension cord do I need? Can I run second extension cord off the first, or do I need to get another 100ft extension cord for the other plug on the generator so I can also run tv & lights - as circa 50ft away from fridge. Struggling to work this out before I can test generator. Thanking you in advance. Will update rating once I can use generator.

May 31, 2021

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 ...

MarketingJune 1, 2021

30 amp advertising misleading

Would Recommend

I bought this to power a small rv with a small a/c unit. It is strong enough to handle it; however, I am having to purchase an adapter to go from the L5 outlet to the TT30r. $800 is a lot to me, but this is my third generac product and all have worked well. It is quiet. I just wish that I had known that it would not work out of the box without purchasing something else. I called customer support and told them what I needed and they did not inform me of that either. Not a negative review bu...

May 25, 2021

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...

MarketingMay 26, 2021