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Firman W03381 Spec Review

The Firman W03381 is a quiet and compact portable inverter generator with a rated wattage of 3300 W and a starting wattage of 3650 W.

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Description

Zoom on the Firman W03381

In summary, the Firman W03381 is a quiet and compact portable inverter generator especially useful for:

  • RV travellers looking for even more independence
  • Occasional participants of outdoor events, competitions, concerts and festivals
  • Handcrafting enthusiasts who wish to work on-the-go
  • Homeowners in need of an emergency backup power for their essentials
  • Camping and tailgating buffs looking to enhance their experience

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 Firman W03381 in use

The Firman W03381

The Firman W03381's core is the 193 cc Firman Max-Pro Series OHV 4-stroke engine, which runs on gasoline. With an output of 120V, it provides a running wattage of 3300W and a peak wattage of 3650W. In addition, the device is parallel capable (Firman parallel kit (opens in a new tab) not included) and thus, can be linked to a similar or compatible unit for added power.

The inverter generator features a simple traditional pull-start mechanism. It is rated for a noise of 58 dBA (less noisy than a quiet suburb).

With a full tank, the W03381 can operate for up to 9 hours (fuel consumption around 0.2 GPH), thanks to its fuel capacity of 1.8 gallon.

Delicate electronics can be plugged in an AC outlets safely, as the W03381 generates a clean sine wave, reaching a <3% Total Harmonic Disruption (THD).

Outlets

The control panel provides the upcoming 3 AC outlets:

Duplex 120V 20A (5-20R)
120V 30A (TT-30R) receptacle

Additionally, it features 2 DC outlets: there's a 5V USB port allowing you to conveniently charge electronics such as mobile phones and tablets and a 12V 8A receptacle allowing you to easily charge your batteries.

With its TT-30R receptacle (TT as in 'Travel Trailer'), this Firman generator is RV Ready.

Portability

The Firman W03381 is an inverter generator and has an encased design of the following dimensions: L23.2 x W17.8 x H17.9 in. Thus, it is more aesthetical than conventional, open frame products. The featured design follows the latest trends and is ideal for easy and recreational use.

The W03381's dry weight of 87 lbs lets you use its power anywhere needed. Additionally, it can be easily moved with the help of its wheel kit (⌀5") and its folding handle, once it is on the ground.

Features

Panel of the Firman W03381

The W03381's control panel

The W03381 and its control panel include a convenient meter, which displays voltage, frequency and lifetime hours. This feature comes handy when monitoring its status and activity.

In addition to this info, the light indicators show you if the generator is on overload, the generator is ready and the oil level is too low.

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

Along the basic documentation and an owner's manual (opens in a new tab), useful for starting the generator right away, the Firman W03381's package also includes these accessories: oil, tool kit, battery charging cables and funnel.

Emissions

The Firman W03381 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 and thus, may be used in forested areas.

Product Video

The Firman W03381 versus other generators

The following charts are provided to give you an idea of how some of the key specs of the Firman W03381 compare to generators of similar power (between 2500 and 3500 W).

  • As for its weight, the Firman W03381 weighs only 87 pounds, making it one of the lighter generators in the 2500-3500 rated wattage category. If you are concerned by weight, one of the champions in the above mentioned power range is the WEN GN400i, with a dry weight of just 66.1 pounds.
  • Since this inverter generator is rated for a lowest possible noise of 58 dBA, it can be considered as one of the more quiet of the products generating similar power. If noise emissions are important to you, one of the least noisy generators of this power range is the Honda EU3000iS with only 50 dBA.
  • Regarding its autonomy, the autonomy of the W03381, reaching up to 9 hours at a 25% load, can be considered as low end, compared to other products of a roughly equal output. If autonomy is your priority, one of the devices of a similar power output with the highest run time is the Honda EU3000iS, reaching up to 20 hours.
  • Even though run times are undoubtedly important, they are dependent on the fuel capacity to a large extent. For a more wholesome picture, we must take into consideration the fuel consumption of the generator. Standing at an estimated 0.2 GPH (gallon per hour) at a 25% load, this inverter generator is somewhat average in this area compared to other devices, within the aforementioned wattage range. If not satisfied with the afore-mentioned fuel consumption, you may wish to check out the Energizer eZV3200P. With a fuel consumption of as little as 0.13 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 2500-3500W generators, the Firman W03381 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
  • RV Ready
  • Parallel capable
  • Inverter
  • Lightweight for its kind (87 lbs)
  • Quiet for its power (58 dBA)
AVERAGE SPECS:
  • Decent fuel efficiency
WEAKNESSES:
  • No electric start
  • Relatively low run time

Do you own the Firman W03381 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 readyYes
FuelGasoline
Engine193 cc Firman Max-Pro Series OHV 4-stroke
Starting systemRecoil
Power
VoltageAC: 120V 60 Hz, DC: 12V
Running watts3300 W
Starting watts3650 W
Running amps27.5 amps
Peaks amps30.4 amps
Run time @50% loadN/A
Run time @25% load9 h
Features
GFCI outletsNo
Covered outletsYes
Automatic Voltage RegulationInverter
AC outlets
  • 1x Duplex 120V 20A (5-20R)
  • 1x 120V 30A (TT-30R)
DC outlets1x 5V USB port
1x 12V 8A receptacle
Data centerVFT
IndicatorsLow oil, overload and output ready
Fuel tankSteel, 1.8 gal
Fuel gaugeNo
Misc
Weight87 lbs
Approx. dimensions (L x W x H)23.2 x 17.8 x 17.9 in
Noise (lower limit)58 dBA
THD< 3%
EmissionsCARB, EPA
SecurityLow oil and overload protection
Spark arrestorYes
NeutralFloating
Accessories includedOil, funnel, tool kit and battery charging cables
Warranty3 years
SeriesWhisper

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 FIRMAN Power Equipment

Founded in 1999, Firman Power Equipment is a company with a short, but established history in the power equipment industry. Based in Arizona, the company offers an immense range of products, including power tools, automotive equipment, storage utilities, work wear, but most importantly, a wide selection of generators of all sizes, designs and outputs. Interestingly, Firman is a wholly owned subsidiary of the China National Machinery Industry Corporation - a somewhat well renowned company in China and acts as a de facto distributor of their products in the US.

Warranty Information

The Firman W03381 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 Firman generators, please consult Firman's warranty policies (opens in a new tab). Alternatively, you can also contact their Customer Support: 1-844-FIRMAN1 (844-347-6261).

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 homeAC (10,000 BTU)15002200
Refrigerator (energy star)1921192
Washing machine9001650
Pair of small speakers4545
Total2637 W3637 W
For campingRV AC (11,000 BTU)10101600
RV refrigerator180600
Radiant heater13001300
Radio100100
Pair of small speakers4545
Total2635 W3225 W
For workGrinder14002500
Milk cooler11001800
Total2500 W3600 W

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