Memorial Day
The Generac GP3500iO (7128) is a compact and lightweight open frame inverter generator with a rated wattage of 3,000 W and a starting wattage of 3,500 W. (Read full specs)
Amazon Page Content
Description
Zoom on the Generac GP3500iO
In a few words, the Generac GP3500iO is a compact and lightweight portable inverter generator perfectly suited for:
- RV travellers looking for even more independence
- People occasionally participating in outdoor fairs, festivals or events
- Amateur DIY lovers
- Homeowners who want to be able to use the most necessary devices in their household, even during a blackout
- Camping and tailgating hobbyists looking for a portable power source
Over the following sections, you'll uncover its power characteristics, the selection of outlets it offers, its overall portability, and the supplementary features it includes.
Power & Run Time
The Generac GP3500iO
Running on gasoline, the Generac GP3500iO operates with a 212 cc Generac OHV 4-stroke engine, delivering 120V, with a running wattage of 3,000W and a peak wattage of 3,500W. In addition, the device is parallel capable (GP3500iO Parallel Kit not included) and thus, can be linked to a similar or compatible unit for added power.
This inverter generator gets running thanks to a classic hand-operated recoil starting mechanism. It features Generac's PowerDial™, an easy-to-use dial with three operation settings.
The GP3500iO's fuel tank, boasting 2.37 gallons, allows it to operate for up to 11 hours with a full tank (with an estimated fuel consumption of 0.22 GPH).
As the GP3500iO produces a clean sine wave, with a <3% Total Harmonic Distortion (THD), sensitive electronics may be plugged in the AC outlets safely.
Outlets
The control panel features the upcoming 3 AC outlets:
Moreover, it boasts 2 DC outlets: there's two 5V USB ports enabling convenient charging of devices like mobile phones and tablets.
Despite not meeting the 'RV Ready' criteria, this Generac generator grants the advantage of simple RV compatibility via its L5-30R receptacle, enabling you to conveniently power your RV by using an L5-30P to TT-30R adaptor.
Portability
At L19.3 x W16.9 x H16.4 in, the traditional open frame structure of the Generac GP3500iO ensures stability while facilitating convenient maintenance access to components and promoting air cooling. The device has been designed for tough environments and demanding outdoor use.
With a dry weight of 74.3 lbs, the GP3500iO can easily follow you wherever your power needs are. In addition, it is even easier to grab and move the generator around thanks to its open frame design.
Features
The GP3500iO's control panel
To help you monitor the GP3500iO's status and activity, its control panel is equipped with a digital data center, giving you information on the lifetime run hours.
In addition to this info, the generator's light indicators provide visual feedback when its oil levels are insufficient, the generator is ready and the generator is on overload.
As for its security measures, the device features an overload protection (circuit breaker) and an automatic low oil shut-off, letting you use it with a peace of mind.
Apart from the typical documentation and an owner's manual (opens in a new tab), which lets you start it right away, the Generac GP3500iO also is packed along with the following accessories: funnel, tool kit and oil.
Product Videos
The Generac GP3500iO versus other generators
The following charts are provided to give you an idea of how some of the key specs of the Generac GP3500iO compare to inverter generators of similar power (between 2500 and 3500 W).
- Considering its weight, the Generac GP3500iO registers at a modest 74.3 pounds, placing it among the lighter inverter generators in the 2500 to 3500 rated wattage selection. If you are mindful of weight, the Pulsar PGD40iSCO is among the top contenders in this power range, with a dry weight of 46 pounds.
- Offering up to 11 hours of running time on a full tank at 25% load, the GP3500iO is within the average autonomy range of similarly powerful inverter generators. Concerning the run times, one of the several devices with a comparable output, offering the highest autonomy, is the Champion 200977, which is able to run for up to 22 hours.
- Autonomy holds its importance, however, it is largely dependent on the generator’s fuel capacity and so, it is nonsensible to discuss it without mentioning fuel efficiency as well. This inverter generator doesn't excel in fuel efficiency when compared to others of its kind: it consumes approximately 0.22 GPH at a 25% load. If you wish to further improve in the area of fuel efficiency, the Energizer eZV3500P, which boasts with a gas consumption of only 0.13 GPH, may be the right generator for you.
Here's a list of the most popular specific comparisons:
The bottom line
- Several accessories included
- Parallel capable
- Inverter
- Lightweight (74.3 lbs)
- Decent run time
- No electric start
- Low fuel efficiency
Features and Specifications
| Inverter | Yes |
|---|---|
| Parallel capable | Yes, cable not included |
| RV ready | No |
| Fuel | Gasoline |
| Engine | 212 cc Generac OHV 4-stroke |
| Starting system | Recoil |
| Warranty | 3 years |
| Voltage | AC: 120V 60 Hz, DC: 5V |
|---|---|
| Running watts | 3,000 W |
| Starting watts | 3,500 W |
| Running amps | 25 amps |
| Peak amps | 29.2 amps |
| Run time @50% load | 8 h |
| Run time @25% load | 11 h |
| GFCI outlets | No |
|---|---|
| Covered outlets | No |
| Automatic Voltage Regulation | Inverter |
| AC outlets |
|
| DC outlets | 2x 5V USB port |
| Data center | Lifetime run hours |
| Indicators | Low oil, overload and output ready |
| Fuel tank | 2.37 gal |
| Fuel gauge | No |
| Weight | 74.3 lbs |
|---|---|
| Approx. dimensions (L x W x H) | 19.3 x 16.9 x 16.4 in |
| Noise (lower limit) | Unknown |
| THD | < 3% |
| Compliance | CARB |
| Security | Low oil and overload protection |
| Spark arrestor | Yes |
| Neutral | Floating |
| Accessories included | Oil, funnel, and tool kit |
| Other model numbers | 7128 |
| UPC | 696471072020 |
Unlike many websites, we did our best to research each of the specs above. That being said, we are not immune to making the occasional mistake or omission. Should you notice any missing or incorrect values, don't hesitate to suggest improvements so we can address the issue.
About Generac
Generac Power Systems is an American based generator and power equipment manufacturer, founded in 1959. As its name suggests, the main focus of Generac are power generators, and other related electric equipment, such as switches, paralleling systems and small engines. The company has several manufacturing facilities based in the US, thus, their products are engineered and built in the USA. However, their components can be a mix of domestic and foreign parts.
Warranty Information
The Generac GP3500iO is covered under a warranty for up to 3 years. This warranty may be limited and may not cover all parts of the generator.
For more information about the warranty of Generac generators, please consult Generac's warranty policies (opens in a new tab). Alternatively, you can also contact their Customer Support: 1-888-GENERAC (888-436-3722).
Questions & Answers
What can it power?
| Item | Running Watts | Starting Watts | |
|---|---|---|---|
| At home | Dish washer | 1500 | 3000 |
| Refrigerator (energy star) | 192 | 1192 | |
| Slow cooker | 270 | 270 | |
| Cell phone charger | 20 | 20 | |
| Total | 1982 W | 3482 W | |
| For camping | RV AC (11,000 BTU) | 1010 | 1600 |
| RV refrigerator | 180 | 600 | |
| Toaster oven | 800 | 800 | |
| Blender | 400 | 850 | |
| Total | 2390 W | 2980 W | |
| For work | Grinder | 1400 | 2500 |
| Reciprocating saw | 730 | 960 | |
| Drain cleaner | 250 | 250 | |
| Total | 2380 W | 3480 W |
What is the noise rating of the GP3500iO?
Due to the lack of standardization in noise emission measurement, Generac does not provide their units' noise levels.
Does it have an eco mode? (Asked March 19th, 2020)
There is an economy switch that can be put to "ON" when running appliances or equipment that are resistive loads (non-motor starting), such as TVs, lights, laptops, etc.
I want a fuel shut off valve where do I find it (Asked September 24, 2020)
The "OFF" position of the PowerDial Switch stops the engine and shuts off fuel flow.
This unit is a inverter generator ,why do you say it isn't for RV . Is it good for Small 24 ft. Travel trailer? 1 small roof air conditioner? And tv outlets few other things ? (Asked March 20, 2021)
We did not say it's not for RV. We said it's not RV-Ready, since it does not have a TT-30R outlet. This does not mean that the unit is not suitable for an RV. You may read our definition of RV-Ready and use our wattage calculator to estimate your appliances power needs.
Couldn't find the right answer for you? Ask your own question.
User Reviews
For the price. Runs close to a honda. Quality is good not perfect.
Great generator