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KOHLER PRO6.4 Spec Review

The KOHLER PRO6.4 is an open frame portable generator with a rated wattage of 5200 W and a starting wattage of 6400 W.

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Description

Zoom on the KOHLER PRO6.4

In summary, the KOHLER PRO6.4 is a portable generator especially useful for:

  • RV travellers wishing to enhance their freedom and nomad lifestyle
  • Occasional participants of outdoor events, competitions, concerts and festivals
  • Food truck owners who want to ensure that their business is fully self-contained and does not rely on potentially unreliable external power
  • Homeowners who want to be able to use the most necessary devices in their household, even during a blackout
  • Professionals in need of safely powering high-intensity work or lighting equipment

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 KOHLER PRO6.4's core is the 277 cc KOHLER Command PRO® OHV 4-stroke engine, which runs on gasoline. With an output of 120/240V, it provides a running wattage of 5200W and a peak wattage of 6400W.

Enjoying a noise rating of 73.2 dBA (just slightly more noisy than a dishwasher), this generator gets running thanks to a conventional pull-start mechanism.

The fuel capacity of 8 gallons allows the PRO6.4 to operate for around 15 hours at 50% load with a full tank (fuel consumption around 0.53 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 PRO6.4 is unsuitable for the powering of sensitive electronic devices due to its relatively high THD (<6%).

Outlets

The control panel features the following 6 AC outlets:

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

Even though this KOHLER 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 PRO6.4 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

The dimensions of the KOHLER PRO6.4, which are L29.4 x W21.4 x H22.3 in, and its typical, open frame design provides stability and enables the generator to be raised above ground level. This type of design is ideal for tough environments and heavy outdoor use.

As the generator's weight is 174 pounds, manually moving it or transporting it may be challenging, despite the fact that it is technically considered 'portable' (movable). Nevertheless, it can still be moved quite conveniently with the help of its wheel kit (⌀10") and its folding handle, once it is placed on the ground.

Features

Panel of the KOHLER PRO6.4

The PRO6.4's control panel

One of the many PRO6.4's features is the data center (Maintenance Minder), included in its control panel, which conveniently provides information on the lifetime run hours and thus, helps you monitor its activity and status.

In addition to this info, a light indicator shows you if the oil level is too low.

The fuel level of the generator can be determined quickly, easily, and conveniently with the help of its built-in fuel gauge.

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

As for its accessories, apart from the previously mentioned features, the KOHLER PRO6.4 also comes with the basic documentation and an owner's manual (opens in a new tab), allowing you to start it right away.

Emissions

The KOHLER PRO6.4 is EPA-approved and CARB-compliant. It can therefore be sold and purchased in all 50 states, including California.

The KOHLER PRO6.4 versus other generators

The following charts are provided to give you an idea of how some of the key specs of the KOHLER PRO6.4 compare to generators of similar power (between 4500 and 5500 W).

  • With a dry weight of 174 pounds, the KOHLER PRO6.4 finds itself in the expected weight range for generators able to produce between 4500 and 5500 rated watts. If you are concerned by weight, one of the champions in the above mentioned power range is the Westinghouse WGen5300v, with a dry weight of just 107 pounds.
  • Among the generators of a comparable running wattage, this generator with a lowest noise of 73.2 dBA can be judged as noisy. For those who are looking for a less noisy device, we suggest the Honda EU7000iS. With just 52 dBA, it is one of the most quiet devices in this power range.
  • Since the PRO6.4 boasts with a run time of around 15 hours at 50% load, it can be safely judged as one of the devices with the highest run time among those of a comparable output.
  • The run time is important, but also hugely depends on the capacity of the fuel tank and doesn't mean much if we don't talk about fuel consumption as well. As this generator uses an estimated 0.53 GPH (gallon per hour) at a 50% load, it finds itself in the average gasoline consumption range of similar products. If not satisfied with the afore-mentioned fuel consumption, you may wish to check out the Westinghouse WGen5300v. With a fuel consumption of as little as 0.35 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 4500-5500W generators, the KOHLER PRO6.4 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
  • GFCI Outlets
  • High run time
AVERAGE SPECS:
  • Decent weight (174 lbs)
  • Decent fuel efficiency
WEAKNESSES:
  • No electric start
  • No spark arrestor
  • On the noisy side (73.2 dBA)

Do you own the KOHLER PRO6.4 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
Engine277 cc KOHLER Command PRO® OHV 4-stroke
Starting systemRecoil
Power
VoltageAC: 120/240V 60 Hz
Running watts5200 W
Starting watts6400 W
Running amps (@120/240V)43.3/21.7 amps
Peaks amps (@120/240V)53.3/26.7 amps
Run time @50% load15 h
Run time @25% loadN/A
Features
GFCI outletsYes
Covered outletsNo
Automatic Voltage RegulationYes
AC outlets
  • 2x Duplex 120V 20A (5-20R) GFCI
  • 1x 120/240V 30A (L14-30R)
  • 1x 120V 30A (L5-30R)
DC outletsNo
Data centerLifetime run hours
IndicatorsLow oil
Fuel tank8 gal
Fuel gaugeYes
Misc
Weight174 lbs
Approx. dimensions (L x W x H)29.4 x 21.4 x 22.3 in
Noise (lower limit)73.2 dBA
THD< 6%
EmissionsCARB, EPA
SecurityLow oil and overload protection
Spark arrestorNo
NeutralBonded to frame
Accessories includedNo
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 PRO6.4 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 generator sizer.
ItemRunning WattsStarting Watts
At homeSump pump (1/2 hp)10502150
Furnace fan (1/2 hp)8752350
Refrigerator (energy star)1921192
Hair dryer18001900
Mixer200200
Fan40120
Total4157 W5632 W
For campingRadiant heater13001300
RV refrigerator180600
Hair dryer18001900
Toaster oven800800
Set of 5 LED light bulbs5555
Total4135 W4555 W
For workTable saw18004500
Grinder14002500
Drain cleaner250250
Bug zapper8080
Total3530 W6230 W

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