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FIRMAN · Inverter generator

WH03348

4,000 starting watts and 3,200 running watts with gasoline, propane operation.

3,200W running4,000W starting58dB @ 1/4 loadGasoline + Propane

$1,119.99

Direct price snapshot
FIRMAN Dual Fuel Inverter Portable Generator 4000/3200W Electric Start with CO ALERT
Official product image: FIRMAN

Core specifications, simplified.

01 · Output by fuel

Up to 4,000 starting watts

Gasoline3,200W running

4,000W starting

Propane3,000W running

3,750W starting

02 · Runtime & operation

Manufacturer runtime

Up to 9 hrs at 50%

Operating volume

58dB @ 1/4 load

Fuel tank

1.8 Gal

03 · Size & ownership

92 lbs

Unit weight

23.2" x 17.8" x 17.9"

Unit dimensions

Warranty
3-year warranty
Certifications
CARB · CETL · EPA · PGMA
Availability
Available
04 · Controls & safety

Starting

Electric, Recoil

Power quality

3% THD

Safety

Low-oil shutdown · CO Alert

Electrical

120 · 60

1 × 5-20R 120V 20A DUPLEX · 1 × TT-30R 120V 30A RV · 1 × USB OUTLET(5V) · 1 × DC Outlet 12V8.3A

These manufacturer images may include dimensions, control-panel callouts, included equipment, safety features, and common use cases. Scroll sideways to view the complete set available for this model.

FIRMAN WH03348 product view
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Every official field, organized.

The technical fields below come from FIRMAN’s model-specific specification file. Product photos and infographics come from the official product gallery. Confirm current documentation before purchase.

Outdoor use only for combustion models. Never operate a fuel-burning generator inside a home, garage, shed, or other enclosed space. Follow FIRMAN’s manual and use an approved transfer method for home connections.

Manufacturer overview

*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 92 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 50% 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 58 dB. 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.

Specifications · Certifications

CARB Certified
Yes
EPA Certified
Yes
cETL Certified
Yes
CO Alert
Yes
PGMA Certified
No

Specifications · 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
Up to 9 hrs at 50%
THD @ Full Load
3%

Specifications · 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

Specifications · Machine

Low Oil Shutoff
Yes
Power Stream Alternator
Yes

Specifications · Fuel System

Fuel
Gas/LPG
Tank Size
1.8 Gal
Steel/Plastic
Plastic

Specifications · Wheel Kit

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
92 lbs

Packaging · 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
  • Camping
  • Home Projects
  • Tailgate
  • Work
  • Dual-fuel flexibility
  • Inverter power
  • CO Alert shutdown protection
  • Electric, Recoil start

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Official sources:FIRMAN product pageTechnical specificationsAll FIRMAN generatorsVerified September 15, 2026