WE ARE PROUD TO BE INDEPENDENT AND IN NO WAY ASSOCIATED WITH MANUFACTURERS. TO STAY UNBIASED, WE DO NOT ACCEPT FREE PRODUCTS. WE EARN FROM ADVERTISING FEES PAID BY AMAZON, EBAY, CAMPING WORLD, OVERTON'S OR GANDER OUTDOORS ON QUALIFYING PURCHASES.

Cummins Onan P2500i Spec Review

The Cummins Onan P2500i is a quiet, compact and lightweight inverter generator with a rated wattage of 2200 W and a starting wattage of 2500 W.

CompareShortlistShortlistedRemoved from shortlist 20

Picture of the Cummins Onan P2500i
Note: This unit is a rebranded version of the Westinghouse iGen2500, with an additional DC outlet.
Set Price Alert
×
Notify me when the price drops
Set an alert for the Cummins Onan P2500i - Current lowest price: $698.00

Description

Zoom on the Cummins Onan P2500i

In summary, the Cummins Onan P2500i is a quiet, compact and lightweight portable inverter generator especially useful for:

  • Tailgating and campground aficionados with the desire of enjoying power anywhere they go
  • Amateur DIY lovers

The following sections will present you in detail its power characteristics, the different outlets it offers, its overall portability, the extra features it benefits from, and any relevant emission compliance details.

Power & Run Time

The Cummins Onan P2500i in use

The Cummins Onan P2500i

The Cummins Onan P2500i is powered by a 98 cc (3.4 hp) Ducar OHV 4-stroke engine. It delivers 120V, runs on gasoline and offers a running wattage of 2200W as well as a peak wattage of 2500W. In addition, the device is parallel capable (A058U945 parallel kit not included) and thus, can be linked to a similar or compatible unit for added power.

At a noise rating of 52 dBA (just slightly more noisy than rainfall), the inverter generator is started via a conventional pull-start mechanism.

With a fuel capacity of 1 gallon, the Onan P2500i may run for up to 10 hours with a full tank (fuel consumption around 0.1 GPH).

Sensitive electronics can be safely plugged in the AC outlets, as the Onan P2500i produces a clean sine wave, with a <3% Total Harmonic Disruption (THD).

Outlets

The control panel provides the upcoming 2 AC outlets:

Duplex 120V 20A (5-20R)

In addition, it provides 3 DC outlets: there's two 5V USB ports with which charging of electronics like mobile phones and tablets is made convenient and a 12V 8A receptacle with which you may charge your batteries with ease.

Portability

Since the Cummins Onan P2500i is an inverter generator, its closed design (L19.8 x W10.5 x H18.3 in) has an esthetical advantage over conventional, open frame devices. The featured design follows the latest trends and is ideal for easy and recreational use.

Weighing just 48 lbs, the Onan P2500i can be considered a lightweight portable generator. The generator can be moved with ease by only one person and so it can be enjoyed on-the-go. It can also be carried without effort with a featured handle (molded in the case), further improving its convenience.

Features

Panel of the Cummins Onan P2500i

The Onan P2500i's control panel

Monitoring of the Onan P2500i's status and activity is made possible by a digital data center, which provides information on the voltage, fuel level, power output and remaining run time and is one of the features of its control panel.

In addition to this info, several light indicators serve to show you when the generator is ready, the generator is overloaded and its oil levels are insufficient.

From a security point of view, the generator is equipped with an overload protection (circuit breaker) and an automatic low oil shut-off, giving you a peace of mind during use.

While the standard documentation and an owner's manual (opens in a new tab), helpful for starting the device promptly, come with the Cummins Onan P2500i, the following accessories are also included: funnel, tool kit and oil.

Emissions

The Cummins Onan P2500i is EPA-approved and CARB-compliant. Therefore, its sale and purchase are permitted in all of the 50 states, including California.

Moreover, it features a spark arrestor, making it usable in forested areas.

Product Videos

The Cummins Onan P2500i versus other generators

The following charts are provided to give you an idea of how some of the key specs of the Cummins Onan P2500i compare to generators of similar power (between 1500 and 2500 W).

  • As for its weight, the Cummins Onan P2500i weighs only 48 pounds, making it one of the lighter generators in the 1500-2500 rated wattage category. If weight matters to you, one of the champions in this power range is the Champion 200949 with only 38.6 pounds.
  • With a lowest possible noise of 52 dBA, this inverter generator places itself amongst the more quiet of the products delivering similar power. If noise emissions are important to you, one of the least noisy generators of this power range is the Honda EU2200i with only 48 dBA.
  • Given that the Onan P2500i reaches an autonomy of up to 10 hours with a full tank and at 25% load, it is placed within the average autonomy range of similarly powerful generators. If autonomy is your priority, one of the devices of a similar power output with the highest run time is the Westinghouse WGen2000, reaching up to 26 hours.
  • Run times are important, yet thanks to their dependence on the fuel capacity, they should be judged along with the fuel consumption of the device. At an estimated fuel consumption of 0.1 GPH (gallon per hour) at 25% load, this inverter generator is a rather fuel efficient one within its wattage category. If you wish to acquire one of the most gasoline efficient products of this power range, the Predator 2000, with a fuel consumption of 0.08 GPH could be in your good books.
According to our stats, the following comparison is pretty popular: Cummins Onan P2500i vs Honda EU2200i.

Price comparison

As you can see from this interactive chart, when compared to other 1500-2500W generators, the Cummins Onan P2500i is on the average side of the price range.

Therefore, this generator nicely fits in the expected budget for this kind of product.

The bottom line

STRENGTHS:
  • In the expected price range
  • Several accessories included
  • Parallel capable
  • Inverter
  • Lightweight (48 lbs)
  • Quiet for its power (52 dBA)
  • Fuel efficient
AVERAGE SPECS:
  • Decent run time
WEAKNESSES:
  • No electric start

Do you own the Cummins Onan P2500i and agree (or disagree) with these strengths and weaknesses?

Let us know and write your own review.

Features and Specifications

General
InverterYes
PortableYes
Parallel capableYes, cable not included
RV readyNo
FuelGasoline
Engine98 cc Ducar OHV 4-stroke
Starting systemRecoil
Power
VoltageAC: 120V 60 Hz, DC: 12V
Running watts2200 W
Starting watts2500 W
Running amps18.3 amps
Peak amps20.8 amps
Run time @50% load8 h
Run time @25% load10 h
Features
GFCI outletsNo
Covered outletsYes
Automatic Voltage RegulationInverter
AC outlets1x Duplex 120V 20A (5-20R)
DC outlets2x 5V USB port
1x 12V 8A receptacle
Data centerPower output, fuel level, remaining run time and voltage
IndicatorsLow oil, overload and output ready
Fuel tankSteel, 1 gal
Fuel gaugeDigital
Misc
Weight48 lbs
Approx. dimensions (L x W x H)19.8 x 10.5 x 18.3 in
Noise (lower limit)52 dBA
THD< 3%
EmissionsCARB, EPA
SecurityLow oil and overload protection
Spark arrestorYes
NeutralFloating
Accessories includedOil, funnel, and tool kit
Warranty3 years
Other model numbersA058U944

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.

×

This form does not send us any personal data (not even your IP address)

About Cummins

Cummins is a NYSE publicly traded, Fortune 500 corporation dealing in the power sector and heavy industry. Founded in 1919 in Columbus, IN, by William Glanton Irwin and Clessie Cummings, Cummins focused on the development of diesel engines. However, the company truly came to bloom only after the WWII, with the nationwide road expansion and went finally global in the 1960s, with its heavy-duty trucks. Cummins has, over the years, offered a wide variety of power solutions, from actual power plants to RV generators. Yet, the company has only recently dipped its foot into the portable generator market. The company currently offers a small selection of both conventional and inverter generators under the Onan product line, formerly the Cummins Onan brand.

Warranty Information

The Cummins Onan P2500i 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 Cummins generators, please contact the Cummins Customer Support: 1-800-CUMMINS (800-286-6467).

Questions & Answers

What can it power?
Examples of items that can be simultaneously powered.
The examples below are based on a maximum load of 80% and estimated wattages. For a more accurate estimation, use our wattage calculator.
ItemRunning WattsStarting Watts
At homeElectric fry pan15001500
Satelite receiver250250
Total1750 W1750 W
For campingRV AC (11,000 BTU)10101600
RV refrigerator180600
Blender400850
Game console150150
Total1740 W2330 W
For workDemolition hammer12601260
Electric fence (25 miles)250250
Bug zapper8080
Total1590 W1590 W

Couldn't find the right answer for you? Ask your own question.

Your name and email address will not be publicly published. We only need them to be able to answer you directly

Cummins Onan P2500i
1.3 Total Score
4 reviews
Add your review
Price
2
Value
1.5
Quality
0.8
Performance
1
4 Reviews
Show all Most Helpful Highest Rating Lowest Rating Add your review
  1. 0.75
    Price
    20
    Value
    20
    Quality
    10
    Performance
    10

    Bought this POS thinking Cummins and Onan were top of the line.
    I have yet to have it run long enough to get through even one tank of gas…

    + PROS:
    • Starts nice, quiet, small
    - CONS:
    • Runs for 30 minutes then shuts down with only 33 hours on it...
    • It would be great if it ran long enough to get through one tank of gas...
    Helpful(2) Unhelpful(1)You have already voted this
  2. 0.65
    Price
    20
    Value
    20
    Quality
    0
    Performance
    10

    Mine ran crappy right out of the box. It’s now at a cummins repair center where it was diagnosed with a bad carb, then a warped cylinder head….I’ve used it once. Very disappointed in this product. I bought it for the cummins name. I hope they come thru and make things right

    + PROS:
    • good looking unit
    • always started but...
    - CONS:
    • Ran bad out of the box. Service is slow. Defective
    Helpful(2) Unhelpful(1)You have already voted this
  3. 0.75
    Price
    30
    Value
    10
    Quality
    10
    Performance
    10

    We got this brand new out of the box and took it three hours away where it decided to completely take a poop on us and barely charged our battery so had to make a trip home around 10pm.

    + PROS:
    • Looks nice
    • Quiet
    - CONS:
    • Ran for a couple of hours and stopped working.
    • Unreliable.
    Helpful(0) Unhelpful(0)You have already voted this
  4. 0.5
    Price
    10
    Value
    10
    Quality
    10
    Performance
    10

    This is the worst generator I’ve ever came in contact with spills gas and oil all over the place never wants to start and shuts off when it wants to and this is brand new out-of-the-box. Would not ever recommend it

    + PROS:
    • No pros doesn’t work for any tools
    - CONS:
    • No pros doesn’t work for any tools
    Helpful(0) Unhelpful(0)You have already voted this

Leave a review

Your total score

Generator Bible
Logo
Compare items
  • Total (0)
Compare

You can compare as many generators as you wish. However, for the best results, we recommend you to compare only 2 generators at a time.

0