Find out in this review whether the Generac GP3300i is the right choice for your situation and what alternatives there are.
Generac GP3300i review in short
The Generac GP3300i is an alright inverter generator that stands out in its portability at this power level.
That being said, there are other portable generators you will likely prefer instead.
If you don’t mind the bulkier build, the WEN 56380i 3800 offers more power, better reliability, longer run times, etc. at a lower price.
You could also prefer a propane-compatible option like the Westinghouse iGen4500DF over the gasoline-only Generac GP3300i.
Pros
- Relatively good portability
- Relatively compact
Cons
- A few cases of early wear and tear
- Short run times
- No noise level rating
Some of the best uses for the Generac GP3300i include:
- Camping
- RVs
- Running certain power tools
Generac GP3300i performance in important categories
Besides the more general guidelines above, it can be helpful to see how the Generac GP3300i performs in important areas.
| Performance Category | Generac GP3300i Score* | Performance Category | Generac GP3300i Score* |
|---|---|---|---|
| Power Capacity | 5.5 | Fuel Efficiency | 7.5 |
| Run Time | 5.5 | Ease Of Use | 7 |
| Quiet Operation | ? | Portability | 9.5 |
| THD | <5% | Price Category | $$ |
| Reliability Reputation | 8.5 | Overall Expert Rating | 7 |
| Current Price | Check Price |
Individual reviews compare the specific model to portable generators in general and sometimes scores are based on customer input
Generac GP3300i review table of contents
Generac GP3300i key features
You likely don’t have to know about every single Generac GP3300i to get an idea of whether this generator would be good enough for your situation.
Instead, the key features in this table already offer a lot of information.
| Feature | Generac GP3300i Detail |
|---|---|
| Fuel Type | Gasoline |
| Starting Watts | 3300 Starting Watts |
| Running Watts | 2500 Running Watts |
| Run Time @25% Load | 7 Hours |
| Noise Levels | Not Mentioned |
| Outlets | (1) 120V 30A L5-30R Twistlock Outlet (1) Duplex Of 120V 20A 5-20R Outlets, (2) USB Ports |
| THD | <5% |
| Warranty* | 2 Years Limited Residential And 1 Year (Or 1000 Hours) Limited Commercial Warranties |
| Price Category** | $$ |
| Check Current Price |
*Warranties can vary from seller to seller
**Price category at the time of writing
What will the Generac GP3300i run?
What appliances and tools the Generac GP3300i will actually run is one of the most important parts of this review.
Some of the bigger devices the Generac GP3300i should be able to run separately are a bench grinder, 10k BTU window air conditioner, or certain circular saws.
You can also use this generator to power multiple smaller appliances and tools at the same time.
For example, the Generac GP3300i should be strong enough to power an energy-friendly refrigerator, a laptop, a dishwasher, and a coffee maker at the same time.
Keep in mind that your devices may have different power needs than the ones used for these examples.
Additionally, you can find more examples in the article on what a 3500 watt generator can run.
Generac GP3300i customer reviews insights
At this point in the review, the features of the Generac GP3300i could still sound reasonable to you for the price.
Even if this is the case, you want to look at the customer reviews to make sure the rate of technical issues is not too high.
There are some cases where customers mention early wear and tear on their Generac GP3300i.
Besides that, there are a decent amount of customer reviews where the Generac GP3300i was not strong enough to power things like a 15k BTU RV AC.
This second category is likely more due to a lack of checking the power needs than the actual Generac GP3300i performance itself.
So the Generac GP3300i is not perfect but there are still many customers who are happy with this inverter generator.
Generac GP3300i alternatives
The overall Generac GP3300i is alright when it comes to 3000+ watt generators but it is worth mentioning that there are alternatives you will likely prefer.
For example, the WEN 56380i 3800 offers more power, better reliability, longer run times, better fuel efficiency, etc.
If you don’t find this alternative too bulky, you will likely find it better than the Generac GP3300i.
You could also consider investing more into something like the Westinghouse iGen4500DF if you want to be able to get a nice amount of power from propane.
Generac GP3300i vs Honda EU2200i
If the 2200 peak watts and 1800 running watts of the Honda EU2200i are enough for your needs, you could consider it over the Generac GP3300i for certain purposes.
The main benefits of the Honda EU2200i are that it is quieter, more reliable, and easier to operate due to the BlueTooth app compatibility.
On the other hand, the Generac GP3300i offers more power, a 30 amp outlet (but not 30 amps of power), and a more budget-friendly price.
You could consider investing more in the Honda EU2200i if you want reliable backup power, quiet operation, or a generator that will survive intense use.
Is the Generac GP3300i worth it?
The Generac GP3300i can be worth it in terms of the value you get for the investment.
If you need exactly this amount of power and want to keep things relatively portable, it could even be the best inverter generator for you.
That being said, this situation is not that likely.
You will likely prefer some of the alternatives mentioned in this review over the Generac GP3300i.

Other Generac GP3300i specs
Before making a conclusion about the Generac GP3300i, you may want to know about certain specs I did not mention in the review yet.
You can also look at the Generac GP3300i manual for more information about certain parts, parallel kit guidelines, and more.
| Specification | Generac GP3300i Detail |
|---|---|
| Voltage | 120 Volts |
| Portable | Yes |
| Fuel Tank Capacity | 1.06 Gallons |
| Fuel Efficiency (kWh Per Gallon) | 4.127 |
| Outlet Covers | No |
| Engine Displacement | 149cc |
| Recoil Pull Start | Yes |
| Electric Start | No |
| Low Oil Shutdown | Yes |
| Fully Enclosed Design | Yes |
| AC Frequency | 60 Hz |
| Remote Start | No |
| Built-In Digital Smart LCD | No |
| Hour Meter | No |
| Fuel Gauge | No |
| Wattage Meter | No |
| Run Time Remaining | No |
| Engine Type | 4 Stroke |
| Remote Generator Operation | No |
| Parallel Ready | Yes |
| Wheels | No |
| CO-Minder | No |
| Country Of Origin | China |
| Dimensions | 22.2″ L x 13.3″ W x 18.4″ H |
| Weight | 59.5 lbs (27 kg) |
| Check Current Price |
Generac GP3300i FAQ
How long will a Generac GP3300i run on a tank of gas?
A Generac GP3300i will run for about 7 hours at 25% load on a tank of gas.
How much oil does a Generac GP3300i take?
The Generac GP3300i has an oil capacity of 19.2 fluid ounces which is about 0.57 liters.
How much does a Generac GP3300i weigh?
A Generac GP3300i weighs 59.5 pounds (27 kg) without any gasoline.
