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Generac GP3500io vs IQ3500 – Comparison And FAQS…

    Generac GP3500iO






    Generac 7127 iQ3500

    Generac GP3500io vs IQ3500

    Generac GP3500io vs IQ3500: When it comes to inverter generators, the Generac GP3500io and the Generac IQ3500 are both excellent choices, but which one is the superior model? This comparison review of the Generac GP3500io and IQ3500 is intended to help you choose whether the product is the preferable choice.

    Generac GP3500io vs IQ3500 – Quick Comparison Summary

    • On Amazon, the Gnerac IQ3500 is quite popular.

    • Both the Generac GP3500io and the IQ3500 are equipped with 3500 starting watts.

    • The Generac GP3500IO is less expensive.

    • The IQ3500 has a digital smart LCD that displays the amount of remaining run time as well as the fuel level, whereas the GP3500IO does not have any of these capabilities.

    • The Generac GP3500io achieves a 50% reduction in noise, while the Generac IQ3500 Ultra-Quiet achieves a 40% reduction in noise.

    • Both the Generac GP3500io and the Generac IQ3500 are equipped with two USB oullets and are parallel ready.

    Generac GP3500iO

    Generac 7127 iQ3500

    Generac GP3500io

    Generac IQ3500




    Starting watts

    3500 watts

    3500 watts

    Power Source

    Gas Powered

    Gas Powered

    Item Dimensions

    19.7 x 16.5 x 16.4 inches

    23.7 x 18 x 21.7 inches

    Item Weight

    74.30 lbs

    109.10 lbs


     120.00 volts

     120.00 volts

    Fuel Tank Size

    1000W/2000W surge

    1500W/3000W peak

    Peak Watts

    2600 watts

    2600 watts

    FAQS :

    What is the noise level of this unit?

    There is a European standard for this. At 50 feet, "low" rated units are 71db, whereas "high" rated ones are 73db. You'd expect that because most units are sold all over the world, they all satisfy this criterion. The National Park Service in the United States has a noise regulation of 60 decibels at 50 feet. The Onan/Cummings 3600 watt generator in my RV fits that requirement.

    Is it possible to run this in tandem with a 2200 series?

    Answer: A Generac GP3500iO should only be paralleled with another GP3500iO and not with a GP2200i.

    Is it possible to link (connect) the electrical neutral and ground?

    Answer: We recommend calling our customer service department at 888-436-3722 since they will be able to help you better.

    What is the oil consumption of this generator?

    The oil capacity of the model #7128 is 0.6 litres. 10W-30/SAE 30 is the recommended oil.

    Is there an oil filter on this?

    Yes, the Generac GP3500iO has an oil filter.

    Where does it come from?

    Answer: Generac manufactures the majority of its products in Wisconsin, including the XC Series portable generators. The iQ3500, on the other hand, is made to our specifications by a partner in another country.

    My iq3500 has been used twice, and while it is producing electricity, the voltage indicator indicates that it is at zero. Also, if you put it in "economy mode," it will now stall. Any ideas why?

    Answer: I'm not sure about the voltage display, but when it comes to stalling out, I had the same problem after around 10 uses. I spotted a wadded-up piece of steel wool in the muffler outlet hole, which I assumed was for emissions or to keep bees out. With a set of needle-nosed pliers, I yanked it out, and it ran perfectly again. The steel wool was completely covered with black exhaust carbon. Best wishes. I hope this information is useful.

    Is it possible to operate a Whynter eco-friendly 14000 btu two hose portable air conditioner on this machine? with my refrigerator and several lights in my house?

    The power needs of all the gadgets you wish to run determine the size of the generator you'll need. To identify the generator size that best suits your needs, we recommend consulting with a Generac dealer. If you need help finding a local dealer, visit for more information.

    Can I use this generator to power my freezer while travelling down the street in my ice cream truck?

    We are unable to correctly size a unit remotely since each application is unique. We offer an online sizing calculator that will help you figure out what size generator you'll need, but we strongly advise dealing with a dealer to guarantee the right generator is chosen. Our size calculator is available at, and you can find all of our area dealers at Description: Generac GP3500io vs IQ3500

    About this item – Generac GP3500iO Open Frame RV Ready Inverter Generator – 3500 Starting Watts with PowerRush Technology

    • Connect directly to your RV to power most RV air conditioners with up to 15, 000 BTUs of USB outlets, and connect two units together for double the power.

    • Up to 50% quieter – ideal for noise-sensitive environments – and up to 25% lighter – for improved mobility

    • PowerRUSH Technology: Boosts initial capacity by more than 50%, allowing you to do more with less.

    • True power technology ensures that sensitive gadgets receive clean power.

    About this item – Generac 7127 iQ3500-3500 Watt Portable Inverter Generator Quieter Than Honda, Orange/Black

    • USB ports allow you to charge your mobile devices, such as smartphones and tablets.

    • It is ultra-quiet, 40% quieter than the Honda.

    • * Advanced inverter technology and enclosure design allow for ideal silent performance (* Based on independent third-party testing, over 5 dB(A) quieter than the EU3000is).

    • Power Rush’s advanced technology provides 16 percent more power than Honda.

    • A/C rated at 60 Hz is the frequency.

    • Start/run/stop electric start with power dial-three operating parameters merged into one easy-to-use dial (battery included).

    • Digital smart lcd watt meter, remaining run time display, generator status, hour meter, and fuel level

    • This generator is great for jobsites or recreational activities because of its sturdy steel shell, clean inverter power, and simple transportation.