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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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Price History
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Price history for the Firman W03381
Latest updates:
  • $849.99 - February 13, 2024
  • $749.99 - December 28, 2023
  • $887.99 - November 10, 2023
  • $999.99 - September 21, 2023
Data source: zoro.com
Since: September 21, 2023
  • Highest Price: $999.99 - September 21, 2023
  • Lowest Price: $749.99 - December 28, 2023

Description

Perfect for the home, camping, or tailgating; the W03381 is a 3650 watt generator made with you in mind. (source: Firman (opens in a new tab))

Zoom on the Firman W03381

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

  • RV travellers wishing to enhance their freedom and nomad lifestyle
  • People occasionally participating in sporting competitions, open-air performances and outdoor festivals
  • Amateur DIY lovers
  • Homeowners in need of an emergency backup power for their essentials
  • Tailgating and campground aficionados with the desire of enjoying power anywhere they go

In the forthcoming sections, you'll delve into its power characteristics, the various outlets it offers, its overall portability, and the additional features it boasts.

Power & Run Time

The Firman W03381 in use

The Firman W03381

Firman W03381 runs on gasoline, powered by a 193 cc Firman Max-Pro Series OHV 4-stroke engine, delivering 120V, boasting a running wattage of 3,300W alongside a starting wattage of 3,650W. Additionally, as the generator is parallel capable (Firman parallel kit (opens in a new tab) not included), it can be linked to a second unit for more power.

With a noise rating of 58 dBA (less noisy than a refrigerator), the inverter generator's starting mechanism is centered around a manual recoil starter system.

The W03381's fuel tank holds 1.8 gallon, ensuring uninterrupted operation for up to 10 hours with a full tank (fuel consumption approximately 0.18 GPH).

Sensitive electronics can be safely plugged in the AC outlets, as the W03381 produces a clean sine wave, with a <3% Total Harmonic Distortion (THD).

Outlets

The control panel includes the following 3 AC outlets:

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

Furthermore, it has 2 DC outlets: there's a 5V USB port ideal for charging various electronic devices such as smartphones and tablets and a 12V 8A receptacle enabling simple battery charging for added ease.

Thanks to its TT-30R receptacle (TT meaning 'Travel Trailer'), this Firman generator is RV Ready, ready to power your recreational vehicle with ease.

Portability

The Firman W03381 is an inverter generator and features an encased design with the following dimensions: L23.2 x W17.8 x H17.9 in. This design enhances aesthetics and helps minimize noise levels, distinguishing it from conventional, open frame products. The design follows the contemporary trends and is perfect for recreationally generating power.

Weighing 87 lbs, the W03381 is practical, ensuring it can follow you wherever power is required. Moreover, its set of 2 wheels (⌀5") and its folding handle will allow you to easily shift it once it's on the ground.

Features

Panel of the Firman W03381

The W03381's control panel

To help you monitor the W03381's status and activity, its control panel is equipped with a convenient meter, which displays voltage, frequency and lifetime hours.

In addition to this info, when the oil level is too low, the generator is ready and the generator is on overload, you will be informed by the featured light indicators.

From a security standpoint, the generator is furnished with an automatic low oil shut-off and an overload protection (circuit breaker), ensuring peace of mind during operation.

Beyond the standard documentation and an owner's manual (opens in a new tab) to assist with setup, the Firman W03381 ships with supplementary accessories: oil, battery charging cables, funnel and tool kit.

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 sits comfortably within the expected weight range for inverters generating 2500 to 3500 rated watts. Weight-conscious users may find the Pulsar PGD40iSCO appealing, as it is one of the top contenders in this power range, weighing just 46 pounds.
  • Delivering a rated noise output as low as 58 dBA, this inverter generator is has a quieter operation that most units of similar type and power. If noise emissions are one of your priorities, you may want to take a look at the Honda EU3000iS. It's one of the quietest options among generators of similar power, rated at 50 dBA.
  • In terms of autonomy, the W03381 offers up to 10 hours at a 25% load, placing it at the lower range within its type and power range. If run time is one of your main concerns, the Champion 200914 could be worth looking at. It boasts one of the highest run times among units of comparable power, lasting up to 22 hours.
  • While run time matters, it's heavily influenced by the fuel tank's capacity. Hence, it's important to consider fuel efficiency alongside. With an estimated fuel consumption of 0.18 GPH at a 25% load, this inverter generator aligns with the average gasoline usage range of comparable products. If minimizing fuel usage is one of your key priorities, the Energizer eZV3500P is one of the most efficient devices with similar power output, with a gasoline consumption of only 0.13 gallons per hour.

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
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

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.

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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 wattage calculator.
ItemRunning WattsStarting Watts
At homeElectric fry pan15001500
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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