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KOHLER PRO12.3EFI Spec Review

The KOHLER PRO12.3EFI is a powerful open frame portable generator with a rated wattage of 10500 W and a starting wattage of 12300 W.

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Description

Zoom on the KOHLER PRO12.3EFI

In a nutshell, the KOHLER PRO12.3EFI is a powerful portable generator mostly geared towards professionals in need of safely powering high-intensity work or lighting equipment.

In the following paragraphs, we shall explore the power characteristics, available outlets, portability, and any additional features of the device, along with its emission compliance information.

Power & Run Time

The KOHLER PRO12.3EFI in use

The KOHLER PRO12.3EFI

The KOHLER PRO12.3EFI's design includes a gasoline-fueled 694 cc KOHLER Command PRO® EFI OHV 4-stroke engine. With a 120/240V output, it gives a running wattage of 10500W and also a peak wattage of 12300W.

Enjoying a noise rating of 79.9 dBA (less noisy than a shower), this generator can be started thanks to a simple traditional pull-start mechanism, but also to a simple and elegant electric starter (battery included). The PRO12.3EFI can also be remotely started, offering further convenience (separate purchase).

The Electronic Fuel Injection (EFI) system enhances the engine's reliability, lowers fuel consumption, improves startup, reduces servicing, boosts stale fuel resistance, and offers better altitude adaptability.

Thanks to a fuel capacity of 8.7 gallons, the PRO12.3EFI can operate for around 10 hours at 50% load with a full tank (fuel consumption around 0.87 GPH). Refilling the fuel tank is facilitated by KOHLER’s Accu-Fill™ technology. It offers a 45% larger angled fuel inlet, which allows for an easier and safer pouring of gasoline as well as less spilling.

The PRO12.3EFI generates a clean sine wave: providing <5% Total Harmonic Disruption (THD), delicate electronics can be plugged in its AC outlets safely.

Outlets

The control panel features the upcoming 7 AC outlets:

Two Duplexes 120V 20A (5-20R) GFCI
120V 30A (L5-30R) receptacle
120/240V 30A (L14-30R) receptacle
120/240V 50A (SS2-50R) receptacle

It also sports 1 DC outlet: there's a 12V 8A receptacle with which charging your batteries is made easy.

This KOHLER generator isn't quite RV Ready, but it features an L5-30R receptacle, allowing a simple RV connection through an L5-30P to TT-30R adaptor. Besides, as it features a twist-lock L14-30R receptacle, the PRO12.3EFI is transfer switch ready: in case of a power outage, you will be easily able to connect it to a breaker box and power your household.

Portability

The KOHLER PRO12.3EFI has a conventional, open frame design, of the following dimensions: L35.2 x W22.4 x H30.3 in, which offers support and allows it to be raised above ground level. The device has been designed for tough environments and demanding outdoor use.

As the generator's weight is 306 pounds, manually moving it or transporting it may be challenging, despite the fact that it is technically considered 'portable' (movable). However, this lack of maneuverability is compensated by its wheel kit, with which you can conveniently shift it, once it's on the ground.

Features

Panel of the KOHLER PRO12.3EFI

The PRO12.3EFI's control panel

To help you monitor the PRO12.3EFI's status and activity, its control panel is equipped with a digital data center, giving you information on the lifetime run hours.

The generator allows for a quick, easy and convenient assessment of its gas level, as it is equipped with a built-in fuel gauge.

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

Regarding its accessories, besides the aforementioned features, the KOHLER PRO12.3EFI's box includes the typical documentation and an owner's manual (opens in a new tab), letting you start it right off the bat.

Emissions

The KOHLER PRO12.3EFI is EPA-approved and CARB-compliant. It can therefore be sold and purchased in all 50 states, including California.

The KOHLER PRO12.3EFI versus other generators

The following charts are provided to give you an idea of how some of the key specs of the KOHLER PRO12.3EFI compare to generators of similar power (between 10000 and 11000 W).

  • As its dry weight is 306 pounds, the KOHLER PRO12.3EFI is one of the heavier of the products which can generate 10000 to 11000 running watts. Regarding dry weight, one of the champions in the same power range is the A-iPower SUA13000EFI, with a dry weight of only 218 lbs.
  • Among the generators of a comparable running wattage, this generator with a lowest noise of 79.9 dBA can be judged as noisy. If noise emissions are important to you, one of the least noisy generators of this power range is the A-iPower SUA13000EFI with only 69 dBA.
  • Offering around 10 hours of running time on a full tank at 50% load, the PRO12.3EFI 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 Powerhorse 13000ES, as it provides 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. At an estimated fuel consumption of 0.87 GPH (gallon per hour) at 50% load, this generator is a rather fuel efficient one within its wattage category. If not satisfied with the afore-mentioned fuel consumption, you may wish to check out the A-iPower SUA13000EFI. With a fuel consumption of as little as 0.78 GPH, it is one of the most efficient generators currently on the market.

Price comparison

As you can see from this interactive chart, when compared to other 10000-11000W generators, the KOHLER PRO12.3EFI 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:
  • GFCI Outlets
  • Remote start capable
  • Clean sine wave
  • Electronic Fuel Injection
  • Fuel efficient
AVERAGE SPECS:
  • Decent run time
WEAKNESSES:
  • On the expensive side
  • No spark arrestor
  • On the heavy side (306 lbs)
  • On the noisy side (79.9 dBA)

Do you own the KOHLER PRO12.3EFI and agree (or disagree) with these strengths and weaknesses?

Let us know and write your own review.

Features and Specifications

General
InverterNo
PortableYes
Parallel capableNo
RV readyNo
FuelGasoline
Engine694 cc KOHLER Command PRO® EFI OHV 4-stroke
Starting systemRecoil, Electric, Remote
Power
VoltageAC: 120/240V 60 Hz, DC: 12V
Running watts10500 W
Starting watts12300 W
Running amps (@120/240V)87.5/43.8 amps
Peaks amps (@120/240V)102.5/51.3 amps
Run time @50% load10 h
Run time @25% loadN/A
Features
GFCI outletsYes
Covered outletsNo
Automatic Voltage RegulationYes
AC outlets
  • 2x Duplex 120V 20A (5-20R) GFCI
  • 1x 120V 30A (L5-30R)
  • 1x 120/240V 30A (L14-30R)
  • 1x 120/240V 50A (SS2-50R)
DC outlets1x 12V 8A receptacle
Data centerLifetime run hours
IndicatorsNo
Fuel tank8.7 gal
Fuel gaugeYes
Misc
Weight306 lbs
Approx. dimensions (L x W x H)35.2 x 22.4 x 30.3 in
Noise (lower limit)79.9 dBA
THD< 5%
EmissionsCARB, EPA
SecurityLow oil and overload protection
Spark arrestorNo
NeutralBonded to frame
Accessories includedBattery
Warranty3 years

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.

About KOHLER

Kohler Co., founded in 1873 by John Michael Kohler, has been one of the leading US manufacturing companies for over a century, with its products ranging from furniture to power generators. Its American based Kohler Power division focuses on the latter, scaling from portable generators to industrial-scale devices. Its rich history and great reputation serve as a testament to the quality of their products. The company has in recent years outsourced some of its production overseas, to China, but US made generators can still be found among their product selection.

Warranty Information

The KOHLER PRO12.3EFI 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 KOHLER generators, please consult KOHLER's warranty policies (opens in a new tab). Alternatively, you can also contact their Customer Support: 1-800-544-2444.

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
Microwave (1000 watts)15001500
AC (10,000 BTU)15002200
Dish washer15003000
Sump pump (1/2 hp)10502150
Refrigerator (energy star)1921192
Vacuum cleaner10751175
Set of 5 LED light bulbs5555
Cell phone charger2020
Total8392 W9892 W
For campingRV AC (11,000 BTU)10101600
RV refrigerator180600
Hair dryer18001900
Electric grill16501650
Electric fry pan15001500
Microwave (1000 watts)15001500
Rice cooker650650
Radio100100
Total8390 W8980 W
For workTable saw18004500
Air compressor (1 hp)16006100
Grinder14002500
Demolition hammer12601260
Disc sander12001200
Electric fence (25 miles)250250
Drain cleaner250250
Total7760 W12260 W

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