Zoom on the Cummins Onan P4500i
In summary, the Cummins Onan P4500i is a quiet and compact portable inverter generator especially useful for:
- RV travellers wishing to enhance their freedom and nomad lifestyle
- People occasionally participating in outdoor fairs, festivals or events
- Homeowners who want to be sure of their ability to power their fridges, cooking tools, heating and lighting equipment during power failures
- Tailgating and campground aficionados with the desire of enjoying power anywhere they go
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 P4500i's design includes a gasoline-fueled 224 cc (7.3 hp) Ducar OHV 4-stroke engine. With a 120V output, it gives a running wattage of 3700W and also a peak wattage of 4500W. Moreover, since it is parallel capable (A058M290 parallel kit (opens in a new tab) not included), its power may be increased if linked to a second compatible unit.
The inverter generator features a simple traditional pull-start mechanism and also a convenient and easy-to-use electric starter (battery included). It is rated for a noise of 52 dBA (just slightly more noisy than rainfall). The Onan P4500i can also be remotely started, offering further convenience (key fob included).
The fuel capacity of 3.4 gallons allows the Onan P4500i to operate for up to 18 hours with a full tank (fuel consumption around 0.19 GPH).
The Onan P4500i produces a clean sine wave: thanks to a <3% Total Harmonic Disruption (THD), your sensitive electronics can be safely plugged in the AC outlets.
The control panel features the upcoming 3 AC outlets:
In addition, it provides 2 DC outlets: there's two 5V USB ports with which charging of electronics like mobile phones and tablets is made convenient.
With its TT-30R receptacle (TT as in 'Travel Trailer'), this Cummins generator is RV Ready.
Thanks to its closed inverter generator design (L24.5 x W18.3 x H20.5 in), the Cummins Onan P4500i, is more esthetical than a typical, open frame generator. The featured design follows the latest trends and is ideal for easy and recreational use.
The Onan P4500i can be taken anywhere with you, thanks to its weight of 98 lbs. Moreover, its set of 2 wheels (⌀5.5") and its telecospic handle will allow you to effortlessly shift it once it's on the ground.
A digital data center, one of the features of the Onan P4500i's control panel, gives you information on the remaining run time, lifetime run hours, voltage, fuel level and power output, and thus, is helpful for the monitoring of its activity and status.
In addition to this info, the device’s light indicators will display if the generator is overloaded, the generator is ready and its oil levels are insufficient.
Security-wise, this product benefits from an automatic low oil shut-off and an overload protection (circuit breaker), which gives you a complete peace of mind when using it.
Apart from the typical documentation and an owner's manual (opens in a new tab), which lets you start it right away, the Cummins Onan P4500i also is packed along with the following accessories: funnel, battery charger, oil, tool kit and key fob. A storage cover is also available, as a separate purchase.
The Cummins Onan P4500i is EPA-approved and CARB-compliant. Thus, selling and purchasing this generator is allowed in each of the 50 states, including California.
Moreover, it features a spark arrestor, so it is adequate for use in forested areas.
The Cummins Onan P4500i versus other generators
The following charts are provided to give you an idea of how some of the key specs of the Cummins Onan P4500i compare to generators of similar power (between 3500 and 4500 W).
- As far as its dry weight is concerned, the Cummins Onan P4500i weighs just 98 pounds and thus, it is one of the lighter 3500 to 4500 rated wattage generators. In terms of weight, one of the champions in their power range is the WEN GN400i, standing at just 66.1 lbs.
- As its lowest possible noise is rated at 52 dBA, this inverter generator qualifies as one of the most quiet of the products of similar power.
- Offering up to 18 hours of running time on a full tank at 25% load, the Onan P4500i is within the average autonomy range of similarly powerful generators. Furthermore, considering the run times, one of the generators which have a roughly same power output, with the highest autonomy, is the Champion 200914, as it provides up to 22 hours.
- While the run time is an important parameter, it is dependent on the fuel tank’s capacity and thus, doesn’t say much on its own unless we consider fuel consumption as well. This inverter generator reaches an estimated fuel consumption of 0.19 GPH (gallon per hour) at a 25% load, making it average, for the previously mentioned wattage range. If not satisfied with the afore-mentioned fuel consumption, you may wish to check out the Westinghouse iGen4200. With a fuel consumption of as little as 0.14 GPH, it is one of the most efficient generators currently on the market.
Here's a list of the most popular specific comparisons:
As you can see from this interactive chart, when compared to other 3500-4500W generators, the Cummins Onan P4500i 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
- In the expected price range
- Several accessories included
- RV Ready
- Remote start
- Parallel capable
- Lightweight for its kind (98 lbs)
- Quiet for its power (52 dBA)
- Decent run time
- Decent fuel efficiency
The Cummins Onan P4500i doesn't have any notably low specs.
Features and Specifications
|Parallel capable||Yes, cable not included|
|Engine||224 cc Ducar OHV 4-stroke|
|Starting system||Recoil, Electric, Remote|
|Voltage||AC: 120V 60 Hz, DC: 5V|
|Running watts||3700 W|
|Starting watts||4500 W|
|Running amps||30.8 amps|
|Peak amps||37.5 amps|
|Run time @50% load||15 h|
|Run time @25% load||18 h|
|Automatic Voltage Regulation||Inverter|
|AC outlets|| |
|DC outlets||2x 5V USB port|
|Data center||Power output, fuel level, lifetime run hours, remaining run time and voltage|
|Indicators||Low oil, overload and output ready|
|Fuel tank||Steel, 3.4 gal|
|Approx. dimensions (L x W x H)||24.5 x 18.3 x 20.5 in|
|Noise (lower limit)||52 dBA|
|Security||Low oil and overload protection|
|Accessories included||Oil, funnel, tool kit, key fob, battery charger, and battery|
|Other model numbers||A058U955|
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.
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.
The Cummins Onan P4500i 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?
|Item||Running Watts||Starting Watts|
|At home||Electric fry pan||1500||1500|
|Refrigerator (energy star)||192||1192|
|Total||2947 W||3947 W|
|For camping||RV AC (11,000 BTU)||1010||1600|
|Total||2940 W||3530 W|
|Electric fence (25 miles)||250||250|
|Total||2910 W||4010 W|
At what elevation can you use this generator? (Asked August 08, 2020)
Up to 2000 feet without rejetting the carburetor.
Does this generator need to be covered if it rains. (Asked August 11, 2020)
Any portable generator has to be covered. Please refer to our article on rain and snow operation.
can this generator hook up to a manual generator transfer switch wired to a house panel (Asked October 20, 2020)
While it could technically be feasible with the help of a licensed electrician, we do not recommend it. This unit only produces 120V and is not designed for such a permanent connection.
Where is the P4500i Onan generator manufactured. I ask this, because I have had one on order for 3 months now. Is it coming out of China? (Asked November 04, 2020)
The P4500i is manufactured in Asia to Cummins' standards. It is currently on backorder pretty much everywhere.
Does remote control also turn it off? (Asked December 06, 2020)
The unit can be remotely started and stopped.
Will the generator run at 5,000 feet? I go in hi elevations sometimes (Asked March 25, 2021)
You will probably have to rejet it/use an altitude kit. We recommend reading our article on operation in high altitudes.
Who is the manufacturer of the engine used in the P4500i, I was told its Briggs and Stanton. (Asked April 14, 2021)
The engine is manufactured by Ducar.
Where is the serial number located. (Asked April 26, 2021)
Does this generator have a CO sensor and shut-off if unsafe levels are detected? (Asked June 08, 2021)
The current version of the P4500i does not feature a CO sensor. You may have a look at our list of units with a CO sensor.
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