Generac GP2200i Vs GP2500i: What Is The Best Choice?

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The Generac GP2200i and GP2500i only vary in small ways. Find out how you can choose between these models anyway.

Some of the main differences between the Generac GP2200i and GP2500i are that the Generac GP2500i has more watts, better fuel efficiency, and a longer residential warranty.

On the other hand, the Generac GP2200i has a slightly longer run time, a weight that is a tiny amount lower, and a price that tends to be a bit more budget-friendly.

First of all, people who want to run more than a few small electrical devices likely want to go for the Generac GP2500i or even something stronger.

That aside, you could argue that the Generac GP2200i requires refuels just a bit less often. If you value this small difference, this could be the generator for you.

However, because the difference in run time is not that big either, you likely want to check the current prices of these machines.

This is because there are sometimes deals that make the Generac GP2500i more budget-friendly while also offering more power, more fuel efficiency, and a longer warranty.

If there are no good deals and the Generac GP2200i still suits your needs, this option could then save you some money.

Important differences Generac GP2200i vs GP2500i

The Generac GP2200i and GP2500i are two very similar generators but as their name implies, there are still a few differences.

These will influence what the best generator is for your personal situation.

FeatureGenerac GP2200iGenerac GP2500i
Running Watts1700 Running Watts2200 Running Watts
Starting Watts2200 Starting Watts2500 Starting Watts
Run Time
@25% Load
10.75 Hours8 Hours
Fuel Efficiency
(kWh Per Gallon)
3.8074.400
Weight46.6 lbs (21.1 kg)48 lbs (21.8 kg)
Fuel Tank Capacity1.2 Gallons1 Gallon
Engine Displacement80cc98cc
Warranties*2 Years Limited Residential
And 1 Year Limited Commercial
3 Years Limited Residential
And 1 Year Limited Commercial
Price Category**$$$$ (Typically A Bit Higher)
Check Current PriceCheck Current Price
Important differences Generac GP2200i vs GP2500i

*Warranties can vary from seller to seller

**Price category at the time of writing

Other features Generac GP2200i vs GP2500i

Before investing in either the Generac GP2200i or GP2500i you may also want to have another look at their common features.

FeatureGenerac GP2200iGenerac GP2500i
Fuel TypeGasolineGasoline
Voltage120 Volts120 Volts
DecibelsNot MentionedNot Mentioned
PortableYesYes
Outlets(1) Duplex Of 120V 20A 5-20R Outlets,
(1) Round 12V DC, (1) USB Port
(1) Duplex Of 120V 20A 5-20R Outlets,
(1) 8A 12V DC, (1) USB Port
Outlet CoversYesYes
Recoil Pull StartYesYes
Electric StartNoNo
Low Oil ShutdownYesYes
Fully Enclosed DesignYesYes
AC Frequency60 Hz60 Hz
Remote StartNoNo
Built-In
Digital Smart LCD
NoNo
Hour MeterNoNo
Fuel GaugeNoNo
Wattage MeterNoNo
Run Time RemainingNoNo
Engine Type4 Stroke4 Stroke
Low THDLess Than 5%Less Than 5%
Remote Generator
Operation
NoNo
CO-MinderNoNo
USB Ports1 USB Port1 USB Port
Parallel ReadyYesYes
WheelsNoNo
Dimensions19.7″ L x 11.4″ W x 17.9″ H19.7″ L x 11.4″ W x 17.9″ H
Country Of OriginNot MentionedNot Mentioned
Check Current PriceCheck Current Price
Other features Generac GP2200i vs GP2500i

Differences Generac GP2200i vs GP2500i explained

For some people and situations, choosing between the Generac GP2200i and GP2500 is as easy as taking a quick look at the differences and prices.

On the flip side, you could also benefit from more information about why certain of the most important details matter.

Starting and running watts

The main purpose of generators like the Generac GP2200i and GP2500i is to convert fuel into usable electricity.

There are two parts to how much power a generator can produce.

First of all, there are starting watts which come down to an initial burst of power. This is mentioned because some electrical devices require this burst to get going.

Once your electrical devices get started, you need enough running watts to keep them working.

With that in mind, the Generac GP2200i is a relatively basic generator with its 2200 starting watts and 1700 running watts.

The Generac GP2500i is still not the strongest generator out there but it does offer more power in the form of 2500 starting watts and 2200 running watts.

To power a few small electrical devices, the Generac GP2200i could be strong enough.

That being said, when you want to power a few more medium-sized devices, the Generac GP2500i or something stronger will be required.

Winner: Generac GP2500i

Fuel capacity, run time, and fuel efficiency

Besides how much power a generator can create, there are many important details related to the fuel that is used.

More specifically, the Generac GP2200i and GP2500i vary in terms of fuel capacity, run time, and fuel efficiency.

First, the Generac GP2200i has a fuel capacity of 1.2 gallons whereas the Generac GP2500i actually has a lower capacity of 1 gallon.

This also creates a difference in how long these generators can run at 25% load with a full tank.

The Generac GP2200i is able to run for 10.75 hours in this situation. On the other side, the Generac GP2500i only runs 8 hours at 25% load.

With these numbers, you can also make a rough estimation of how much power (kWh) each generator can create with one gallon of fuel.

In this area, the Generac GP2500i actually does better with 4.400 kWh per gallon whereas the Generac GP2200i creates about 3.807 kWh per gallon.

Winner: Generac GP2200i for fuel capacity and run time

Winner: Generac GP2500i for fuel efficiency

Warranties

You can describe warranties as how long a brand takes responsibility for any issues a generator experiences under normal use.

Even though they are from the same Generac brand, the GP2200i and GP2500i vary in terms of residential warranty.

More precisely, the Generac GP2200i has 2 years of limited residential warranty whereas the Generac GP2500i has 3 years of limited residential warranty.

Additionally, both of these generators have 1 year of limited commercial warranty.

Winner: Generac GP2500i with a residential warranty that is 1 year longer

Price

The Generac GP2200i and GP2500i each have their advantages and disadvantages. In cases like this, price differences could make your decision easier.

Exactly how much of an investment each machine requires can vary over time and depend on where you get them.

At the time of writing, the Generac GP2500i tends to require a slightly higher investment.

That being said, temporary deals can definitely swing this small difference in the other direction too.

Winner: Generac GP2200i

User reviews Generac GP2200i vs GP2500i

When comparing two models from the same generator brand, looking at the feature and price differences is typically enough to make a decision.

However, even in cases like this, customer reviews sometimes uncover unexpected downsides of certain generators.

That being said, the reviews for the Generac GP2200i and GP2500i are very similar. Both in terms of overall positivity and what issues sometimes happen.

The main thing people note is situations where their generator initially did not work as desired.

After a few contact points with customer support these issues tend to get resolved.

In case this happens, it does require some extra time and attention.

At the same time, you can conclude these are exceptional situations since customer reviews tend to be positive overall.

Is the Generac GP2200i or GP2500i right for you?

In short, the Generac GP2500i offers a nice amount more power, gets more kWh out of a gallon of fuel, and has a longer residential warranty.

On the other side, the Generac GP2200i runs a bit longer, weighs a tiny amount less, and tends to be just a bit more budget-friendly.

If you want to run more than a few small electrical devices, you will likely need the extra power potential of the Generac GP2500i.

Besides that, you can theoretically argue that people who want to refuel less often want to go for the Generac GP2200i.

However, since the difference in this area is so small, you likely mainly want to look at the current prices of these machines.

Temporary deals sometimes make the Generac GP2500i the more budget-friendly option even though it offers more power, more efficiency, and a longer warranty.

You can also check out the more in-depth Generac GP2200i review or Generac GP2500i review to get some extra details.

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Author:

Mats is the founder and head editor of Generator Decision. With a combination of critical thinking, tireless research, and a healthy interest in electronics he helps people find the right generators and how to use these. At this point in the journey, Mats has done research on hundreds of portable generators.