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Firman W03381 - 3300/3650W Inverter Generator

The Firman W03381 is a quiet and compact inverter generator with a rated wattage of 3,300 W and a starting wattage of 3,650 W. (Read full specs)

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Firman W03381
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Highest Price
$866.99
Lowest Price
$866.99
Current Price
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Description

Perfect for the home, camping, or tailgating; the W03381 is a 3650 watt generator made with you in mind.

Zoom on the Firman W03381

In a few words, the Firman W03381 is a quiet and compact portable inverter generator perfectly suited 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 hobbyists looking for a portable power source

In the sections ahead, the power characteristics, availability of various outlets, the portability, and any additional features of the device shall be discussed.

Power & Run Time

The Firman W03381 in use

The Firman W03381

Featuring a 193 cc Firman Max-Pro Series OHV 4-stroke engine with cast iron sleeve, the Firman W03381 operates using gasoline, providing 120V, with a running wattage of 3,300W and a starting wattage of 3,650W. Additionally, the parallel capability (Firman parallel kit (opens in a new tab) not included) facilitates increasing of power output when linked to another similar or compatible unit, offering enhanced energy capacity and reliability for diverse requirements.

Rated for 58 dBA (less noisy than a quiet suburb), the inverter generator's starting mechanism relies on a standard recoil pull-rope starting mechanism.

The W03381 boasts a fuel tank capable of holding 1.8 gallon, allowing it to run continuously for up to 10 hours (with fuel usage averaging around 0.18 gallons per hour).

Thanks to its low <3% Total Harmonic Distortion (THD), the W03381 produces a clean sine wave output, making it safe for your sensitive electronics when utilizing the AC outlets.

Outlets

The control panel features the upcoming 3 AC outlets:

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

It also sports 2 DC outlets: there's a 5V USB port designed for hassle-free charging of various electronic devices such as smartphones and tablets, ensuring uninterrupted usage and a 12V 8A receptacle providing easy battery charging capabilities.

With its TT-30R receptacle (TT standing for 'Travel Trailer'), this Firman generator is RV Ready, perfectly suited for powering recreational vehicles.

Portability

Thanks to its closed inverter generator design (L23.2 x W17.8 x H17.9 in), the Firman W03381 not only offers superior aesthetics but also operates with reduced noise levels compared to a typical, open frame generator. The featured design follows the latest trends and is ideal for easy and recreational use.

As the W03381's weight is only 87 lbs, it can follow you and your power needs anywhere. Additionally, its set of 2 wheels (⌀5") and its folding handle enable easy movement of the generator once it's in place.

Features

Panel of the Firman W03381

The W03381's control panel

Included in the control panel of the W03381 are a convenient meter, showing voltage, frequency, and lifetime hours metrics, essential for monitoring its status and activity.

In addition to this info, the device’s light indicators will display if the generator is ready, the generator is on overload and the oil level is too low.

As far as security is concerned, the generator can be used with a peace of mind, as it features an automatic low oil shut-off and an overload protection (circuit breaker).

In addition to the traditional documentation and an owner's manual (opens in a new tab) to help you get started promptly, the Firman W03381 also includes several accessories: battery charging cables, oil, tool kit and funnel.

Product Videos

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 inverter generators of similar power (between 2500 and 3500 W).

  • With a dry weight of 87 lbs, the Firman W03381 falls within the expected weight range for inverter generators in the 2500 to 3500 rated wattage. If you are concerned by weight, one of the champions in the above-mentioned power range is the Pulsar PGD40iSCO, with a dry weight of just 46 pounds.
  • This inverter generator offers a rated noise level of 58 dBA, placing it among the quieter alternatives in its type and power category. If you value reduced noise levels, the Honda EU3000iS could be worth considering. It's one of the quietest generators in its power range, rated at 50 dBA.
  • Regarding its runtime, the W03381 operates for up to 10 hours at a 25% load, positioning it at the lower spectrum among comparable inverters. If concerned with autonomy, one of the products of a comparable power output, which offers the highest run time, is the Champion 200977, boasting with up to 22 hours.
  • While run time is vital, it hinges on the fuel capacity. To grasp the full picture, we must also factor in fuel efficiency. As this inverter generator uses an estimated 0.18 GPH (gallon per hour) at a 25% load, it finds itself in the average gasoline consumption range of similar products. If you wish to acquire one of the most gasoline efficient products of this power range, the Honda EU3200i, with a fuel consumption of 0.14 GPH could be in your good books.

Here's a list of the most popular specific comparisons:

Price comparison

As you can see from these interactive charts, when compared to other 2500-3500W inverter 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
  • Quiet for its power (58 dBA)
AVERAGE SPECS:
  • Decent weight (87 lbs)
  • 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
Parallel capableYes, cable not included
RV readyYes
FuelGasoline
Engine193 cc Firman Max-Pro Series OHV 4-stroke, cast iron sleeve
Starting systemRecoil
Warranty3 years
Power
VoltageAC: 120V 60 Hz, DC: 12V
Running watts3,300 W
Starting watts3,650 W
Running amps27.5 amps
Peak amps30.4 amps
Run time @50% loadUnknown
Run time @25% load10 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%
ComplianceCARB, EPA
SecurityLow oil and overload protection
Spark arrestorYes
NeutralFloating
Accessories includedOil, funnel, tool kit, and battery charging cables
Country of originChina
SeriesWhisper
Other model numbersW3650i
UPC840876133811

We've taken extra care to research and verify each of the specifications above. That said, occasional mistakes or omissions are still possible. If you spot any missing or inaccurate information, feel free to suggest a correction so we can address it.

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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 generator size calculator.
ItemRunning WattsStarting Watts
At homeRefrigerator (energy star)1921192
Hair dryer18001900
Printer600600
Pair of small speakers4545
Total2637 W3637 W
For campingRadiant heater13001300
RV refrigerator180600
RV AC (11,000 BTU)10101600
Radio100100
Pair of small speakers4545
Total2635 W3225 W
For workGrinder14002500
Milk cooler11001800
Total2500 W3600 W

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