The FIRMAN Power Equipment Dual Fuel Inverter Portable Generator 4000W Electric Start with CO ALERT features a control panel, outlet plugs, power settings, and two black wheels for easy mobility.
FIRMAN Power Equipment Dual Fuel Inverter Portable Generator 4000W Electric Start with CO ALERT, featuring versatile controls, multiple outlets, wheels, and handle, displayed against a plain white background.
A FIRMAN Power Equipment Dual Fuel Inverter Portable Generator 4000W Electric Start with CO ALERT is shown with a black front grille, side wheels, and warning labels, photographed against a white background.
The FIRMAN Power Equipment Dual Fuel Inverter Portable Generator 4000W Electric Start with CO ALERT is portable, features yellow wheels, and displays safety instructions and specifications on its side panel.
A FIRMAN Power Equipment Dual Fuel Inverter Portable Generator 4000W Electric Start with CO ALERT seen from the back, featuring a vented black panel, exhaust port, and top handle—reliable portable energy anywhere.
Top view of the FIRMAN Power Equipment Dual Fuel Inverter Portable Generator 4000W Electric Start with CO ALERT, highlighting the fuel cap, warning labels, instructions, diagrams, and safety icons on its black and gray casing.
The FIRMAN Power Equipment Dual Fuel Inverter Portable Generator 4000W Electric Start with CO ALERT, featuring a control panel, wheels, and handles, is displayed against a white background.
The FIRMAN Power Equipment Dual Fuel Inverter Portable Generator, 4000W Electric Start with CO ALERT, features yellow wheels and a black casing with safety labels, shown on a white background.
The FIRMAN Power Equipment Dual Fuel Inverter Portable Generator 4000W Electric Start with CO ALERT features a stylish black and gray design, yellow wheels, and includes safety and operating instructions.
The FIRMAN Power Equipment Dual Fuel Inverter Portable Generator features 4000 starting watts, electric start, CO ALERT, a control panel, wheels, and a black carrying handle.
The FIRMAN Power Equipment Dual Fuel Inverter Portable Generator 4000W Electric Start with CO ALERT features a control panel, outlet plugs, power settings, and two black wheels for easy mobility.
FIRMAN Power Equipment Dual Fuel Inverter Portable Generator 4000W Electric Start with CO ALERT, featuring versatile controls, multiple outlets, wheels, and handle, displayed against a plain white background.
A FIRMAN Power Equipment Dual Fuel Inverter Portable Generator 4000W Electric Start with CO ALERT is shown with a black front grille, side wheels, and warning labels, photographed against a white background.
The FIRMAN Power Equipment Dual Fuel Inverter Portable Generator 4000W Electric Start with CO ALERT is portable, features yellow wheels, and displays safety instructions and specifications on its side panel.
A FIRMAN Power Equipment Dual Fuel Inverter Portable Generator 4000W Electric Start with CO ALERT seen from the back, featuring a vented black panel, exhaust port, and top handle—reliable portable energy anywhere.
Top view of the FIRMAN Power Equipment Dual Fuel Inverter Portable Generator 4000W Electric Start with CO ALERT, highlighting the fuel cap, warning labels, instructions, diagrams, and safety icons on its black and gray casing.
The FIRMAN Power Equipment Dual Fuel Inverter Portable Generator 4000W Electric Start with CO ALERT, featuring a control panel, wheels, and handles, is displayed against a white background.
The FIRMAN Power Equipment Dual Fuel Inverter Portable Generator, 4000W Electric Start with CO ALERT, features yellow wheels and a black casing with safety labels, shown on a white background.
The FIRMAN Power Equipment Dual Fuel Inverter Portable Generator 4000W Electric Start with CO ALERT features a stylish black and gray design, yellow wheels, and includes safety and operating instructions.
The FIRMAN Power Equipment Dual Fuel Inverter Portable Generator features 4000 starting watts, electric start, CO ALERT, a control panel, wheels, and a black carrying handle.
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Certification: Certification CARB Certification cETL Certification EPA
Model: wh03348

Dual Fuel Inverter Portable Generator 4000W Electric Start with CO ALERT
WHISPER Dual Duel Inverter

*Lowes Exclusive Item*

Unleash the power of the FIRMAN WH03348, a rugged and reliable dual fuel portable inverter generator built for those who demand top-tier performance. With 4000 starting watts and 3200 running watts, this generator provides the surge of power you need when it counts the most.

Weighing just 94 lbs and featuring built-in wheels and a folding handle, the WH03348 is easy to transport without compromising on power. Its 1.8-gallon tank delivers up to 9 hours of continuous run-time at 25% load, ensuring you have reliable energy throughout your adventures.

Powered by the Max Pro Series 193cc engine, the WH03348 operates efficiently and quietly at just 58dBs. Safety is key with the CO Alert carbon monoxide shutdown, while the <3% THD guarantees clean, safe power for sensitive devices.

Perfect for DIY projects, RVs, camping, or tailgating, the WH03348 offers versatile plug options and can easily be paralleled with other FIRMAN inverters for even more power. 

Experience the FIRMAN WH03348 and take your outdoor adventures to the next level with unmatched confidence.

BONUS: Included items are a medium durable and water-resistant cover, a 25-foot Power Cord 5-15P to 3x5-15R, and a Storage Strap.

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. 

193cc

FIRMAN Engine

3200/4000

Gas

3000/3750

Liquid Propane

1.8 Gallon Gas Tank

8.5 Hour Run Time

Specifications

Certifications
CARB Certified Yes
EPA Certified Yes
cETL Certified Yes
CO Alert Yes
PGMA Certified No
CARB Certified Yes
EPA Certified Yes
cETL Certified Yes
CO Alert Yes
PGMA Certified No
Output
Running Watts 3200(Gas) 3000 (LPG)
Starting Watts 4000 (Gas) 3750 (LPG)
AC Voltage 120
Frequency (Hertz) 60
Decibels 58dB @ 1/4 load
Run Time 8.5 hrs
THD @ Full Load 3%
Running Watts 3200(Gas) 3000 (LPG)
Starting Watts 4000 (Gas) 3750 (LPG)
AC Voltage 120
Frequency (Hertz) 60
Decibels 58dB @ 1/4 load
Run Time 8.5 hrs
THD @ Full Load 3%
Control Panel
Recoil Start Yes
Electric Start Yes
5-20R 120V 20A DUPLEX 1
TT-30R 120V 30A RV 1
USB OUTLET(5V) 1
DC Outlet 12V8.3A 1
Parallel Ports 1
Recoil Start Yes
Electric Start Yes
5-20R 120V 20A DUPLEX 1
TT-30R 120V 30A RV 1
USB OUTLET(5V) 1
DC Outlet 12V8.3A 1
Parallel Ports 1
Machine
Low Oil Shutoff Yes
Power Stream Alternator Yes
Low Oil Shutoff Yes
Power Stream Alternator Yes
Fuel System
Fuel Gas/LPG
Tank Size 1.8 Gal
Steel/Plastic Plastic
Fuel Gas/LPG
Tank Size 1.8 Gal
Steel/Plastic Plastic
Wheel Kit
Wheels 5.5" Yellow plastic flat free
Handle U shape folding handle
Wheels 5.5" Yellow plastic flat free
Handle U shape folding handle

Packaging

Unit
UPC 840876133484
Unit Dimensions 23.2" x 17.8" x 17.9"
Unit Length 23.2"
Unit Width 17.8"
Unit Height 17.9"
Unit Weight 90 lbs
UPC 840876133484
Unit Dimensions 23.2" x 17.8" x 17.9"
Unit Length 23.2"
Unit Width 17.8"
Unit Height 17.9"
Unit Weight 90 lbs
Carton
Carton Dimensions 28.7" x 18.9" x 19.3"
Carton Length 28.7"
Carton Width 18.9"
Carton Height 19.3"
Carton Weight 110 Lbs
Carton Dimensions 28.7" x 18.9" x 19.3"
Carton Length 28.7"
Carton Width 18.9"
Carton Height 19.3"
Carton Weight 110 Lbs

Manuals

WH03348 Manual English

download

WH03348 Manual Spanish

download

WH03348 Manual French

download

WH03348 Quick Start Guide English

download

WH03348 Quick Start Guide Spanish

download

WH03348 Quick Start Guide French

download
@FIRMANpowerequipment
Image of a Woman holding a handle to an Inverter Generator and walking towards a pick up truck and trailer cart.
An image of a woman uncovering her FIRMAN Generator that is on her truck bed.
A man shows off his FIRMAN Accessories and Inverter Generator collection.
Image of a woman lifting her FIRMAN Inverter Generator with it's U-Shaped Handle
Image of a man holding a cup of coffee in the woods with a FIRMAN Power Generator that is connected to a power cord.
A FIRMAN generator is sitting on the bed of a white pick up truck. The truck is parked against a concrete wall.
Image of a small dog and a FIRMAN Inverter Generator with a suitcase handle, outside on a camping ground.
Image of a man sitting on FIRMAN Power Generator boxes and holding a small Inverter generator.