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FIRMAN · Inverter generator

WH03342

4,125 starting watts and 3,300 running watts with gasoline, propane operation.

3,300W running4,125W starting58dB @ 1/4 loadGasoline + Propane

$1,119.99

Direct price snapshot
FIRMAN Dual Fuel Inverter Portable Generator 4125/3300W Electric Start with CO ALERT
Official product image: FIRMAN

Core specifications, simplified.

01 · Output by fuel

Up to 4,125 starting watts

Gasoline3,300W running

4,125W starting

Propane3,000W running

3,750W starting

02 · Runtime & operation

Manufacturer runtime

9 hrs

Operating volume

58dB @ 1/4 load

Fuel tank

1.8 Gal

03 · Size & ownership

90 lbs

Unit weight

23.2" x 17.8" x 17.9"

Unit dimensions

Warranty
3-year warranty
Certifications
CETL · EPA
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 TWISTLOCK (27.5A/120V/3300W) · 1 × USB-A (2.1A/5V DC/10W)

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 WH03342 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

The FIRMAN WH03342 is a 3300 Running Watts/ 4125 Starting Watts portable generator running on either Gasoline or Propane, for the best of both worlds. · · The WH03342 is a part of the Whisper Dual Fuel Generator Series. It runs at a quiet 58dB, below National Park standards and is RV-Ready! The WH03342 is the ideal solution for those on the go and those who enjoy camping, tailgating, and other recreational activities. The electric start makes this unit very easy-to-use, from the push of a button. It can even be used in parallel with another FIRMAN Whisper inverter. With a THD < 3% this unit is also ideal for fine electronics. Enjoy clean, renewable, quiet power with the FIRMAN WH03342. · · The WH03342 comes with an engine oil bottle, oil funnel, spark plug wrench, screwdriver, 12V battery cable, 3.3ft LPG regulator, floater charger for the battery and quick oil drain. BONUS included items are: a medium durable and water resistant cover, a 25 ft Power Cord 5-15P to 3x5-15R to extend your power. The WH03342 is ready to use!

Specifications · Certifications

CARB Certified
No
EPA Certified
Yes
cETL Certified
Yes
CO Alert
Yes
NOM Certified
No
UL Certified
No

Specifications · Output

Running Watts
3300(Gas) 3000 (LPG)
Starting Watts
4125 (Gas) 3750 (LPG)
AC Voltage
120
Frequency (Hertz)
60
Decibels
58dB @ 1/4 load
Run Time
9 hrs
THD @ Full Load
3%

Specifications · Control Panel

Recoil Start
Yes
Electric Start
Yes
5-20R 120V 20A DUPLEX
1
TT-30R 120V 30A TWISTLOCK (27.5A/120V/3300W)
1
USB-A (2.1A/5V DC/10W)
1
12V DC Power Port/Plug (8.3A/12V DC/100W)
1
Parallel Ports
2

Specifications · Machine

Low Oil Shutoff
Yes
Power Stream Alternator
Yes
Cast Iron Sleeve
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
840876133422
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

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

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