A portable **Gas Inverter Portable Generator 6650/5300 Watt 120/240V CO Alert** outdoor generator with pure sine wave energy, multiple outlets and controls, featuring a black and yellow design and two large wheels for mobility from **FIRMAN Power Equipment**. Model number: W03581.
A portable generator, the Gas Inverter Portable Generator 6650/5300 Watt 120/240V CO Alert from FIRMAN Power Equipment, features 6650 starting watts and 5300 running watts, boasting a 14.5-hour runtime with its 5.3-gallon tank. Equipped with CO Alert technology and a pure sine wave energy output, this outdoor generator includes a 3-year warranty and uses gas fuel.
A person wearing a black shirt and tan pants wheels a FIRMAN Power Equipment Gas Inverter Portable Generator 6650/5300 Watt 120/240V CO Alert along a dirt path in an outdoor, wooded area.
A man in a black shirt and tan pants plugs a yellow cord into a FIRMAN Power Equipment Gas Inverter Portable Generator 6650/5300 Watt 120/240V with CO Alert outside a house surrounded by trees.
A person is refueling a FIRMAN Power Equipment Gas Inverter Portable Generator 6650/5300 Watt 120/240V CO Alert using a red gasoline container beside a brown wooden building.
The FIRMAN Power Equipment Gas Inverter Portable Generator 6650/5300 Watt 120/240V CO Alert features multiple outlets and controls on its yellow and black interface, delivering pure sine wave energy. With large wheels for mobility, it's designed for convenience and reliability.
A black portable generator viewed from the side, featuring a vented panel with labels and controls on top, and a yellow handle on the right side. The robust and compact FIRMAN Power Equipment Gas Inverter Portable Generator 6650/5300 Watt 120/240V CO Alert delivers pure sine wave energy for reliable power wherever you go.
A FIRMAN Power Equipment Gas Inverter Portable Generator 6650/5300 Watt 120/240V CO Alert with a clear display of specifications and safety instructions on the side, featuring a wheel for easy transportation. The FIRMAN Power Equipment Gas Inverter Portable Generator 6650/5300 Watt 120/240V CO Alert provides pure sine wave energy, ensuring safe and stable power for all your needs.
Rear view of the FIRMAN Power Equipment Gas Inverter Portable Generator 6650/5300 Watt 120/240V CO Alert featuring a cooling fan, labeled control panel, and mounted on two wheels for easy transport. This versatile unit produces pure sine wave energy, ensuring your sensitive electronics are safely powered.
Overhead view of a black FIRMAN Power Equipment Gas Inverter Portable Generator 6650/5300 Watt 120/240V CO Alert, showing various labels, instructions, and control panel.
Portable FIRMAN Power Equipment Gas Inverter Portable Generator 6650/5300 Watt 120/240V CO Alert positioned on forest floor, showcasing various outlets and control panel with yellow and black design.
A portable gray and black generator with yellow accents, featuring pure sine wave energy for clean power. The FIRMAN Power Equipment Gas Inverter Portable Generator 6650/5300 Watt 120/240V CO Alert includes multiple outlets, a control panel, and wheels for mobility, making it an excellent outdoor generator.
A black and yellow outdoor generator with various control buttons, an LCD screen, and two wheels for mobility. It has the brand name "FIRMAN Power Equipment" on the top and front, and model "Gas Inverter Portable Generator 6650/5300 Watt 120/240V CO Alert" on the top. This pure sine wave energy generator ensures your devices stay safe while providing reliable power wherever needed.
A Gas Inverter Portable Generator 6650/5300 Watt 120/240V CO Alert model, FIRMAN Power Equipment, featuring 4850 starting watts and 3850 running watts, with a compact, wheeled design and control panel on the top.
A portable outdoor generator with wheels and a handle, labeled "Gas Inverter Portable Generator 6650/5300 Watt 120/240V CO Alert" by FIRMAN Power Equipment, featuring specifications and safety warnings on the body. This model ensures reliable power with pure sine wave energy.
A portable **Gas Inverter Portable Generator 6650/5300 Watt 120/240V CO Alert** outdoor generator with pure sine wave energy, multiple outlets and controls, featuring a black and yellow design and two large wheels for mobility from **FIRMAN Power Equipment**. Model number: W03581.
A portable generator, the Gas Inverter Portable Generator 6650/5300 Watt 120/240V CO Alert from FIRMAN Power Equipment, features 6650 starting watts and 5300 running watts, boasting a 14.5-hour runtime with its 5.3-gallon tank. Equipped with CO Alert technology and a pure sine wave energy output, this outdoor generator includes a 3-year warranty and uses gas fuel.
A person wearing a black shirt and tan pants wheels a FIRMAN Power Equipment Gas Inverter Portable Generator 6650/5300 Watt 120/240V CO Alert along a dirt path in an outdoor, wooded area.
A man in a black shirt and tan pants plugs a yellow cord into a FIRMAN Power Equipment Gas Inverter Portable Generator 6650/5300 Watt 120/240V with CO Alert outside a house surrounded by trees.
A person is refueling a FIRMAN Power Equipment Gas Inverter Portable Generator 6650/5300 Watt 120/240V CO Alert using a red gasoline container beside a brown wooden building.
The FIRMAN Power Equipment Gas Inverter Portable Generator 6650/5300 Watt 120/240V CO Alert features multiple outlets and controls on its yellow and black interface, delivering pure sine wave energy. With large wheels for mobility, it's designed for convenience and reliability.
A black portable generator viewed from the side, featuring a vented panel with labels and controls on top, and a yellow handle on the right side. The robust and compact FIRMAN Power Equipment Gas Inverter Portable Generator 6650/5300 Watt 120/240V CO Alert delivers pure sine wave energy for reliable power wherever you go.
A FIRMAN Power Equipment Gas Inverter Portable Generator 6650/5300 Watt 120/240V CO Alert with a clear display of specifications and safety instructions on the side, featuring a wheel for easy transportation. The FIRMAN Power Equipment Gas Inverter Portable Generator 6650/5300 Watt 120/240V CO Alert provides pure sine wave energy, ensuring safe and stable power for all your needs.
Rear view of the FIRMAN Power Equipment Gas Inverter Portable Generator 6650/5300 Watt 120/240V CO Alert featuring a cooling fan, labeled control panel, and mounted on two wheels for easy transport. This versatile unit produces pure sine wave energy, ensuring your sensitive electronics are safely powered.
Overhead view of a black FIRMAN Power Equipment Gas Inverter Portable Generator 6650/5300 Watt 120/240V CO Alert, showing various labels, instructions, and control panel.
Portable FIRMAN Power Equipment Gas Inverter Portable Generator 6650/5300 Watt 120/240V CO Alert positioned on forest floor, showcasing various outlets and control panel with yellow and black design.
A portable gray and black generator with yellow accents, featuring pure sine wave energy for clean power. The FIRMAN Power Equipment Gas Inverter Portable Generator 6650/5300 Watt 120/240V CO Alert includes multiple outlets, a control panel, and wheels for mobility, making it an excellent outdoor generator.
A black and yellow outdoor generator with various control buttons, an LCD screen, and two wheels for mobility. It has the brand name "FIRMAN Power Equipment" on the top and front, and model "Gas Inverter Portable Generator 6650/5300 Watt 120/240V CO Alert" on the top. This pure sine wave energy generator ensures your devices stay safe while providing reliable power wherever needed.
A Gas Inverter Portable Generator 6650/5300 Watt 120/240V CO Alert model, FIRMAN Power Equipment, featuring 4850 starting watts and 3850 running watts, with a compact, wheeled design and control panel on the top.
A portable outdoor generator with wheels and a handle, labeled "Gas Inverter Portable Generator 6650/5300 Watt 120/240V CO Alert" by FIRMAN Power Equipment, featuring specifications and safety warnings on the body. This model ensures reliable power with pure sine wave energy.
01/15
Certification: Certification cETL Certification EPA
Model: w05381

Gas Inverter Portable Generator 6650/5300 Watt
120/240V CO Alert
SERIES Whisper
TYPE Inverter

*This item is only available to Costco Canada*

Introducing the FIRMAN W05381 your power-packed companion designed for outdoor adventurers who demand excellence. With 6650/5300 Watts and 120/240V availability, this generator is your key to conquering the wild with firm confidence. Operating at a quiet 64 dB, it lets you enjoy the quietness of the outdoors without the typical generator sound.

Increase your runtime with the eco mode button, making the W05381 environmentally and economically friendly. Effortlessly parallel it with any other 5000W  or greater FIRMAN inverter for limitless potential. Producing pure sine wave energy, the W05381 ensures the safe powering of your sensitive electronics and high-end electronics. Safety is a priority, with the modern CO Alert carbon monoxide shutdown feature.

Whether you're an RV enthusiast, camping aficionado, tailgating pro, or DIY leader, the W05381 is your go-to choice, making it the ultimate companion for your next adventure

The W05381 comes with an engine oil bottle, a funnel, a quick oil drain, a toolkit, and a 12V battery cable.

Gas Inverter Portable Generator 6850/5500 Watt Remote Start 120/240V CO Alert

USA AVAILABLE

USA Customers purchase here

This item is only available to ship to Canada.

Please call 1-844-FIRMAN for more information. You can also submit the form below and our Customer Service representative will get back to you shortly.

EPIC PRECISION, TIMELESS PERFORMANCE

  • 322cc engine 
  • Recoil Start 
  • Low oil shut off
  • Cast iron sleeve
  • Starting watts 6650W 
  • Running watts 5300W
  • 120/240 AC Volts

OUR PERFORMANCE, YOUR ULTIMATE ADVANTAGE

  • 5.3-gallon tank
  • Up to 14 hours of run time at 25% load
  • Eco Mode
  • 67dB 25% load
  • Weight: 134.8 lbs

FEATURES THAT GO BEYOND YOUR EXPECATIONS

3-year warranty

Parallel Operation

Multi-Meter

CO alert technology

Multi-featured control panel with covered outlets

  • (1) 5-20R 120V 20A DUPLEX GFCI
  • (1) TT-30R 120V 30A TWISTLOCK
  • (1) L14-30R 120V/240V 30A TWISTLOCK (22.1A/240V/5300W)
  • (1) 14-50R 120V/240V 50A (22.1A/240V/5300W)
  • (1) USB-C (3.1/5A/5/9/12/15/20V DC/60W)
  • (1) 12V DC Power Port/Plug (8.3A/12V DC/100W)
ENGINEERED IN THE USA

FIRMAN generators are made to endure every condition from cold winter nights to hot summer days to everything in between.

Industry-Leading Warranty

New FIRMAN generators are backed by a 3-year warranty. Refurbished generators have a limited 90 day warranty

Customer Support

Our skilled technicians located in Peoria, AZ are available 7 days a week to provide the support you need when you need it most. 

322cc

FIRMAN Engine

6850

Starting Watts

5500

Running Watts

10Hr Run Time

5.3 Gallon Tank

Specifications

Certifications
EPA Certified Yes
cETL Certified Yes
PGMA G300-2018 Yes
EPA Certified Yes
cETL Certified Yes
PGMA G300-2018 Yes
Output
Running Watts 5300
Starting Watts 6650
AC Voltage 120/240
DC Voltage 12
Frequency (Hertz) 60
Decibels 67dB 1/4 load
Run Time 14 hrs 1/4 load
THD @ Full Load 3%
Running Watts 5300
Starting Watts 6650
AC Voltage 120/240
DC Voltage 12
Frequency (Hertz) 60
Decibels 67dB 1/4 load
Run Time 14 hrs 1/4 load
THD @ Full Load 3%
Control Panel
Recoil Start Yes
5-20R 120V 20A DUPLEX GFCI 1
TT-30R 120V 30A TWISTLOCK 1
L14-30R 120V/240V 30A TWISTLOCK (22.1A/240V/5300W) 1
14-50R 120V/240V 50A (22.1A/240V/5300W) 1
USB-C (3.1/5A/5/9/12/15/20V DC/60W) 1
12V DC Power Port/Plug (8.3A/12V DC/100W) 1x2 Prong Angled
Parallel Port Yes
Multi-Meter P-V-Hr-F-Fuel Level/Oil Alert/ Over Load
Recoil Start Yes
5-20R 120V 20A DUPLEX GFCI 1
TT-30R 120V 30A TWISTLOCK 1
L14-30R 120V/240V 30A TWISTLOCK (22.1A/240V/5300W) 1
14-50R 120V/240V 50A (22.1A/240V/5300W) 1
USB-C (3.1/5A/5/9/12/15/20V DC/60W) 1
12V DC Power Port/Plug (8.3A/12V DC/100W) 1x2 Prong Angled
Parallel Port Yes
Multi-Meter P-V-Hr-F-Fuel Level/Oil Alert/ Over Load
Machine
Low Oil Shutoff Yes
CO Shut Off Yes
Power Stream Alternator Yes
Cast Iron Sleeve Yes
Low Oil Shutoff Yes
CO Shut Off Yes
Power Stream Alternator Yes
Cast Iron Sleeve Yes
Fuel System
Fuel Gas
Tank Size 5.3 Gal.
Steel/Plastic Steel
Fuel Gas
Tank Size 5.3 Gal.
Steel/Plastic Steel
Wheel Kit
Wheels 8"-Gray-plastic-flat free
Handle U shape folding handle
Wheels 8"-Gray-plastic-flat free
Handle U shape folding handle

Packaging

Unit
UPC 840876000000
Unit Dimensions 27.6x21.3x22.6
Unit Length 27.6
Unit Width 21.3
Unit Height 22.6
Unit Weight 129.2
UPC 840876000000
Unit Dimensions 27.6x21.3x22.6
Unit Length 27.6
Unit Width 21.3
Unit Height 22.6
Unit Weight 129.2
Carton
Carton Dimensions 31.5x22.8x24
Carton Length 31.5
Carton Width 22.8
Carton Height 24
Carton Weight 155.4
Carton Dimensions 31.5x22.8x24
Carton Length 31.5
Carton Width 22.8
Carton Height 24
Carton Weight 155.4

Manuals

W05381_Manual_English

download

W05381_Manual_Spanish

download

W05381_Manual_French

download

W05381_QSSG_English

download

W05381_QSSG_Spanish

download

W05381_QSSG_French

download

Watch

FIRMAN W05381

@FIRMANpowerequipment
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A man shows off his FIRMAN Accessories and Inverter Generator collection.
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A FIRMAN generator is sitting on the bed of a white pick up truck. The truck is parked against a concrete wall.
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