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NorthStar c15000s - 13500/15000W Portable Generator With Electric Start And Honda Engine

The NorthStar c15000s is a powerful open frame generator with a rated wattage of 13,500 W and a starting wattage of 15,000 W. (Read full specs)

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Description

Zoom on the NorthStar c15000s

In a few words, the NorthStar c15000s is a powerful portable generator perfectly suited for professionals who want to be able to deliver results, even during a power failure..

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 NorthStar c15000s's design includes a gasoline-fueled 688 cc Honda GX690 OHV V-Twin engine. With a 120/240V output, it gives a running wattage of 13,500W and also a peak wattage of 15,000W.

Featuring a noise rating of 73 dBA (just slightly more noisy than a dishwasher), the generator utilizes a simple and elegant electric starter (battery included) for ignition.

Thanks to its 12 gallons fuel tank, the c15000s can run continuously for around 10.6 hours at 50% load on a full tank (with an average fuel consumption of approximately 1.13 GPH).

With a <5% Total Harmonic Distortion (THD), the c15000s delivers a clean sine wave—essential for safeguarding your delicate electronics when plugged into its AC outlets.

Outlets

The control panel includes the following 9 AC outlets:

Three Duplexes 120V 20A (5-20R) GFCI
120V 30A (L5-30R) receptacle
120/240V 30A (L14-30R) receptacle
120/240V 60A (14-60R) receptacle

Even though this NorthStar generator isn't quite RV Ready, its L5-30R receptacle allows an easy RV connection via an L5-30P to TT-30R adaptor. Besides, because the c15000s is equipped with a twist-lock L14-30R receptacle, it is transfer switch ready: it can power your home during a power outage, as it can be easily connected to your breaker box to power your household.

Portability

Measuring L43 x W36 x H35 in, the classic open frame build of the NorthStar c15000s delivers stability and easy maintenance access to components, facilitating air circulation. The generator is designed for ideal use outdoors and in rough environments.

Though weighing 390 lbs, the generator remains classified as 'portable,' indicating its capability to be moved, though its weight could pose transport challenges. Nevertheless, thanks to its wheel kit (⌀10") and its folding handle (a decent solution to its lack of maneuverability), the generator can be easily moved, once placed the ground.

Features

Panel of the NorthStar c15000s

The c15000s's control panel

To help you monitor the c15000s's status and activity, the unit's control panel is equipped with a digital display that provides extensive information on the generator (more information about it below).

As far as security is concerned, the generator comes with an overload protection (circuit breaker) and an automatic low oil shut-off, providing peace of mind during use.

It also includes a carbon monoxide sensor. This sensor is designed to monitor the level of carbon monoxide present during the generator's operation. If the generator is positioned incorrectly and carbon monoxide levels rise to an unsafe level, the generator will automatically shut down.

In addition to the standard documentation and the user manual for prompt setup, NorthStar has also included accessory] in the packaging of the c15000s.

Full-Featured Display

The Home, Service, and Diagnostic screens of the display

The excellent digital display

The unit is fitted with a colored, multi-function LCD display that offers simple, yet incredinbly exhaustive, at-a-glance monitoring. It features 3 screens:

  • Home: Gives you information about the load that is connected, fuel level, and total runtime of the generator
  • Service: Displays maintenance intervals and the time remaining before each service is due
  • Diagnostic: Provides various electrical data, such as voltage, current, and frequency

The NorthStar c15000s versus other generators

The following charts are provided to give you an idea of how some of the key specs of the NorthStar c15000s compare to generators of similar power (between 10000 and 14000 W).

  • A weight of 390 lbs makes the NorthStar c15000s one of the heavier devices in the 10000-14000 rated wattage range. Weight-conscious users may find the A-iPower SUA13000EFI appealing, as it is one of the top contenders in this power range, weighing just 218 pounds.
  • This generator offers a rated noise level of 73 dBA, placing it among the quieter alternatives in its power category. If noise emissions are one of your priorities, you may want to take a look at the DuroMax XP16000iH. It's one of the quietest options among generators of similar power, rated at 67 dBA.
  • The c15000s's runtime of around 10.6 hours at a 50% load on a full tank positions it within the average autonomy range compared to other generators with similar power. If you consider autonomy on a single full tank as one of the deciding factors, one of the generators in the same power range that offers the highest run time is the Powerhorse 13000ES, with around 15 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. In fact, this generator is not one of the most fuel-efficient options in the aforementioned wattage range: its estimated gasoline consumption at 50% load is around 1.13 GPH. If you wish to acquire one of the most gasoline efficient products of this power range, the A-iPower SUA13000EFI, with a fuel consumption of 0.78 GPH could be in your good books.

Price comparison

As you can see from these interactive charts, when compared to other 10000-14000W generators, the NorthStar c15000s is on the expensive side of the price range.

While certainly not the cheapest of its kind, purchasing it would most likely also mean enjoying the reliability of a high-end product.

The bottom line

STRENGTHS:
  • Excellent display, full of information
  • CO Sensor
  • GFCI Outlets
  • Rare 60-amp outlet
  • Impressive quantity of AC outlets
  • 4 different AC outlet types
  • Honda engine
  • Electric start
  • Clean sine wave
  • Quiet for its power (73 dBA)
  • Made in USA
AVERAGE SPECS:
  • Decent run time
WEAKNESSES:
  • On the expensive side
  • No recoil back-up
  • No remote start
  • On the heavy side (390 lbs)
  • Low fuel efficiency

Do you own the NorthStar c15000s and agree (or disagree) with these strengths and weaknesses?

Let us know and write your own review.

Features and Specifications

General
InverterNo
Parallel capableNo
RV readyNo
FuelGasoline
Engine688 cc Honda GX690 OHV V-Twin
Starting systemElectric
Warranty4 years
Power
VoltageAC: 120/240V 60 Hz
Running watts13,500 W
Starting watts15,000 W
Running amps (@120/240V)112.5/56.3 amps
Peak amps (@120/240V)125/62.5 amps
Run time @50% load10.6 h
Run time @25% loadUnknown
Features
GFCI outletsYes
Covered outletsYes
Automatic Voltage RegulationYes
AC outlets
  • 3x Duplex 120V 20A (5-20R) GFCI
  • 1x 120V 30A (L5-30R)
  • 1x 120/240V 30A (L14-30R)
  • 1x 120/240V 60A (14-60R)
DC outletsNo
Data centerPower output, fuel level, lifetime run hours, voltage and frequency
IndicatorsNo
Fuel tank12 gal
Fuel gaugeDigital
Misc
Weight390 lbs
Approx. dimensions (L x W x H)43 x 36 x 35 in
Noise (lower limit)73 dBA
THD< 5%
ComplianceCARB, EPA
SecurityLow oil and overload protection, CO monitoring
Spark arrestorYes
NeutralBonded to frame
Accessories includedFunnel, battery, and wheel kit
Country of originUSA
SeriesCommercial-Grade
Other model numbers1654406

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.

Spec Improvement×

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About NorthStar

NorthStar is a brand of outdoor power equipment trademarked and sold by the Northern Tool + Equipment company which has been based in Burnsville, Minnesota, USA since being founded in 1981. NorthStar products include log splitters, portable generators, air compressors, and pressure washers. Their line of commercial-grade portable generators is manufactured in the US. With many units powered by Honda engines, NorthStar outdoor power tools make up a large percentage of the product line for the fast-growing Northern Tool company.

Warranty Information

The NorthStar c15000s is covered under a warranty for up to 4 years. This warranty may be limited and may not cover all parts of the generator.
For more information about the warranty of NorthStar generators, please contact the NorthStar Customer Support: 1-800-270-0810.

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 generator sizer.
ItemRunning WattsStarting Watts
At homeAC (10,000 BTU)15002200
Dish washer15003000
Microwave (1000 watts)15001500
Electric fry pan15001500
Sump pump (1/2 hp)10502150
Refrigerator (energy star)1921192
Electric range21002100
Clothes iron12701270
Security system180180
Total10792 W12292 W
For workElectric welder90009000
Grinder14002500
Electric fence (25 miles)250250
Bug zapper8080
Total10730 W11830 W

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