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Generac 7128 GP3500iO 3,500-Watt Portable Generator - PowerRUSH Technology for Increased Starting Capacity, Quieter & Lighter Design, RV Ready, Enhanced Convenience, 19.3 x 16.9 x 16.4 inches, Orange

  • Based on 2,049 reviews
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Availability: In Stock.
Fulfilled by Amazon

Arrives Saturday, Apr 6
Order within 19 hours and 46 minutes
Available payment plans shown during checkout

Style: 3500-Watt + Open Frame


Features

  • PowerRUSH Technology: Experience the advantage of PowerRUSH Technology, delivering over 50% more starting capacity. Accomplish more with less effort, making it perfect for various applications.Engine RPM : Variable. Fuel Shut Off : On Control Panel.
  • Quieter and Lighter Design: Enjoy a quieter operation with up to 50% reduced noise levels, ideal for noise-sensitive environments. It is also up to 25% lighter, ensuring easy portability wherever you go
  • True Power Technology: Ensure clean and stable power supply for sensitive electronics. True Power Technology provides reliable power, safeguarding your valuable devices from potential damage
  • RV Ready: Connect directly to your RV and power most RV air conditioners up to 15,000 BTU. Stay comfortable and enjoy the conveniences of home while on your camping or road trip adventures
  • Enhanced Convenience: Benefit from USB outlets for convenient charging of electronic devices. The generator is also parallel ready, allowing you to connect two units for double the power output. Experience enhanced versatility and performance

Description

The Generac GP3500iO open frame inverter featuring new, advanced PowerRush technology delivers over 50 percent more starting capacity for tools and other motor-driven equipment—so you can do more with less. Both quieter and lighter, it’s the ideal portable solution for camping, powering your RV essentials or tools.


Brand: Generac


Wattage: 3500 watts


Fuel Type: Gasoline


Power Source: Gas Powered


Recommended Uses For Product: Residential, Camping


Item Weight: 74.3 Pounds


Voltage: 120 Volts


Output Wattage: 3.5 Watts


Special Feature: Portable, Super Quiet, Low Oil Shutdown, Hour Meter


Included Components: Generac 7128 GP3500iO Portable Open frame Inverter Generator, Engine Oil, Oil Funnel, Tool Kit, Owner's Manual See more


Brand: Generac


Wattage: 3500 watts


Fuel Type: Gasoline


Power Source: Gas Powered


Recommended Uses For Product: Residential, Camping


Item Weight: 74.3 Pounds


Voltage: 120 Volts


Output Wattage: 3.5 Watts


Special Feature: Portable, Super Quiet, Low Oil Shutdown, Hour Meter


Included Components: Generac 7128 GP3500iO Portable Open frame Inverter Generator, Engine Oil, Oil Funnel, Tool Kit, Owner's Manual


Color: Orange


Product Dimensions: 19.7"L x 16.5"W x 16.4"H


Model Name: GP3500iO


Engine Type: 4 Stroke


Ignition System Type: Recoil Pull Start


Tank Volume: 2.37 Gallons


Engine Displacement: 212 Cubic Centimeters


Total Power Outlets: 4


Frequency: 50 Hz


Running Wattage: 3000 Watts


Item Weight: 74.3 pounds


Manufacturer: Generac Power Systems


Country of Origin: China


Item model number: 7128


Is Discontinued By Manufacturer: No


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Apr 6

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • Just one word. WOW
Style: 3300-Watt
I have owned other generac products before and have been disappointed by them, ironically the last generac generator I owned was a gp3300, and that model was a standard pull start model not inverted and not clean power. This is the total opposite of that. This thing is totally silent, so quiet we chained it to one of the blocks at our fireworks tent for we were afraid someone might steal it. Anyway I got this to directly replace the noisy older GP 3300 and I have to say this is one of the best generators I have ever owned. As mentioned this thing is near silent, even under full load it's near silent. It provides roughly 3100 Watts continuously for our purposes. During the day it ran a mini glass door refrigerator, register, open sign, and two portable AC units. At night this thing ran the lighting that was built into the fireworks tent without a hiccup, it also ran 8 100 Watt led ground floodlights to light up the banners outside the tent, and because it cooled off at night we could just run fans instead of the AC units. This thing ran nearly continually for 2 weeks as our fireworks tent is 24 hours. The fuel efficiency on this thing is incredible, It would go through a gallon of fuel every 4 hours with it running at 3100 watts output, at night when you could audibly hear it was in eco mode I would fill it up at 10:00 p.m. (it only holds about a gallon of gas) and then I wouldn't have to refill it again until the sun was coming up (approximately 6 am). Your fuel efficiency directly depends on how much power you are pulling from the unit, we never made it pop a breaker, but I guess we did get it to push out too much power once when we didn't turn things on one at a time, and it over surged, the check engine light came on, and about 20 seconds later before I could get to the generator it cut out the motor and turned off. I restarted the generator and made sure to turn on the refrigeration units one at a time, when I did that I was pulling equal load and it handled it a lot better. As of using the USB ports directly on the front, I did not get a chance to, as I would not leave my phone charging on the generator which had to be outside of the fireworks tent and far enough away that it couldn't start anything on fire, so I haven't had a chance to try it, but when I do I will update this review. I will also post longevity updates so people know what to expect on how long one of these will last. We have infrequent power outages where I live, maybe a couple times a year, and usually not for more than a few hours, so this will definitely be handy to keep all of our food cold... I will post updates as the unit ages. ***UPDATE 7/11/2023*** This generator has now survived 3 fireworks tents, not a problem during the last fireworks tent, but after and during clean up it started randomly surging and shutting off. Between all of the other things we had it do, it has well over 6000 hours on it to date, and I have to say with all of the demand we put on this unit, I am surprised it lasted this long with proper maintenance, most home generators are meant to last 1000 hours as that's the limit on generacs warranty. Even with the current problems I would be willing to buy another unit and not change my review one bit. This thing is an absolute workhorse, and has surpassed my expectations. I highly recommend this generator as I haven't had commercial generators last this long before major problems. We used these a lot more than just for fireworks tents, I use these in a commercial setting and put a lot of demand on them, so to the average home user for camping/fishing/backup-power/occasional use, this will probably be the only generator you'll buy for a long time, if you ever need to replace it. BTW I tested the USB ports on the front, and they provide full quick charging 2.0 or 15W of power and worked perfectly. Mind you all of this took place in the phoenix Arizona metro with 110+ degree weather. If it can be that much of a workhorse out here in the extreme heat, it should last a normal home user a very, very long time. Thanks for reading! ***Update 7/24/2023*** The motor is toast! I literally ran this generator until the motor wore out! Looked at the hours meter on it and it says 6428.8 hrs run. Good job Generac! Please keep up the good work and keep making dependable generators. Just bought another unit to replace my well worn GP3300i. It keeps it's 5 star rating for being the most dependable generator I have ever owned, I always thought it would be Kohler's industrial line of generators that would get this review, but I have yet to have one of them run longer than 2000 hours before having similar issues. ... show more
Reviewed in the United States on July 22, 2022 by Mas

  • Good product
Style: 2500-Watt
Like the generator. I bought a larger unit from someone else. Seller wouldn't let me return this one so now I have 2.
Reviewed in the United States on August 25, 2023 by Joseph Wilson Sands

  • Love this product
Style: 2500-Watt
I have a few of these. Trusted product and very quiet.
Reviewed in the United States on August 14, 2023 by michelle lynn graham

  • Satisfied
Style: 2500-Watt
I use this for my boat to run power to my bait light and also to keep my batteries charged on the boat when camping
Reviewed in the United States on July 18, 2023 by Ralph McCool

  • Great performance for a great price
Style: 2500-Watt
I love how reliable, and quiet this generator is. I can run several things at once (including my power washer). It's light enough to carry and works perfectly. Easy to start too. At less than half the price of the Honda it's simply great
Reviewed in the United States on July 4, 2023 by Hapless

  • PERFECT for my application
Style: 3000-Watt
Okay, so here's the TL;DR Awesome generator for a camp trailer. Amazing bang-for-your-buck in comparison to popular brands. SUPER quiet. Quieter than I expected. Weighs less than expected. Starts very easily. Ran my AC unit no problem. Very fuel efficient. Full review: This thing is absolutely perfect for what I needed. I have a 30' travel trailer with a 15,000BTU AC unit, and my main concern was running that periodically while boondocking. I looked at the "red" 2200i's because that's what my in-laws run, but I would have needed 2 of those to run it (like they have done.) That puts me in the ~$2,300 price range. Other 'cons' to this approach: 2 engines to maintain, and 102 total lbs. (I try and travel as light as possible, so I'm always thinking about weight). The 'pros' to this approach: it has the right name on it, serviceable pretty much anywhere. Anyway, back to this one. The first thing I noticed was how light it is. It only weighs slightly more than a red 2200i. It is a little bigger, but not by much. It fired right up on the first pull (make sure it's on 'choke' as it doesn't seem to start on 'run' even when warm). The next thing I noticed was how QUIET this thing is... I just got back from a 4 day camping trip with some family that have some standard generators and man... I'm glad I got an inverter generator. That's all I'll say. I checked my dB meter and it put it right on with ONE of my father-in-law's running. However, the GP3000i beat his two running parallel while still providing enough power to run the AC. Another observation was that even though it registered the same, it still seemed quieter. I think possibly due to the Generac running at a lower frequency. It just felt less annoying. Needless to say, it ran my AC flawlessly. I didn't try to run much of anything else while running AC, but it ran that and all the LED lights in my trailer no problem. There's no doubt in my mind that it would run everything in my trailer at once, except maybe the microwave simultaneously. Never really use that thing anyway, though. My last observation was how well it conserved fuel. I would fill it up about 10:30-11:00 at night, turn on Eco mode, and let it sing us all to sleep. By 7:00-8:00 in the morning it had kept my furnace running all night and still have about 1/3 tank left. Came home with about 2 gallons left in my 5 gallon gas can. So I can't speak to longevity, durability, or repair-ability yet. But I will update my review if/when I get that experience. However, at the moment I'm VERY happy with my purchase. I saved ~$1,500 going this route with little to no compromises in sight. ... show more
Reviewed in the United States on July 27, 2020 by Bangarang143 Bangarang143

  • Installed and tested on GeoPro 15TB Camper with Generac 3300i (Quiet and Easy)
Style: 3300-Watt
I Installed a Stromberg Carlson RV/Camper Holder on my GeoPro 15TB Camper with Generac Generator. I uploaded a full tutorial video on my YouTube channel ToastyDIY for anyone who wants to check it out. I am able to power my 15,000 BTU AC, mine does have soft start which makes it a breeze for this generator, you can use a 15K BTU without soft start but you can pull upwards of 30-50 amps of inrush at each AC compressor start up so I don't recommend it. ... show more
Reviewed in the United States on June 13, 2023 by jackson faulkner

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