Want Reliable Yet Quiet Power For Your Jobsite Or Campsite? The Firman WH03242 Dual Fuel Generator Delivers
The Firman WH03242 Dual Fuel Inverter Generator gives you dependable power wherever you need it without the noise and hassle of traditional generators. With the flexibility to run on gasoline or propane, you can adapt to fuel availability and extend your runtime with ease.
Delivering 3200 running watts and 4000 starting watts, this unit is ideal for RV trips, home backup, and jobsite use. Its inverter technology produces clean, stable power that is safe for sensitive electronics like phones, laptops, and appliances.
The electric start makes operation simple, while the integrated CO Alert system automatically shuts the generator down if unsafe carbon monoxide levels are detected, adding an extra layer of protection. Compact, efficient, and easy to transport, the WH03242 is built for users who want reliable power without compromise.
Whether you are preparing for outages or heading off-grid, this generator gives you confidence that power is always within reach.

Firman WH03242 Dual Fuel Generator Features
One of the Quietest Dual-Fuel Generators on the Market
The WH03242 is a part of the Whisper Hybrid Dual Fuel Generator Series. It runs at a quiet 58dB, well below National Park standards.
RV-Ready
With a 120V, 30A RV – NEMA TT-30R A outlet, the Firman WH03242 comes RV-ready, so you can use it to charge your devices and appliances on the go.
Easy to Use
It has an electric start, so you don't have to pull a cord to get it started. It also has a low oil shutoff, which will stop the engine if the oil level gets too low.
Fuel Efficient
The Firman WH03242 is fuel-efficient, with a fuel economy of 1.25 gallons per hour on gasoline and 0.9 gallons per hour on propane. This means that you can get a long run time from a single tank of fuel.
What's In The Box
- 1 x Firman WH03242 Dual Fuel 3200W/4000W Inverter Portable Generator
- 1 x Protective Cover
- 1 x Engine Oil Bottle
- 1 x Oil Funnel
- 1 x Spark Plug Wrench
- 1 x Screwdriver
- 1 x 12V Battery Cable
- 1 x LPG Regulator (0.8m)
- 1 x Floater Charger for the Battery and Quick Oil Drain
Firman 3-Year Warranty
Firman warrants to the original purchaser that the mechanical and electrical components will be free of defects in material and workmanship for a period of one (1) year (parts and labor) and three (3) years (parts and technical support) from the original date of purchase 90 days [parts and labor] and 180 days [parts] for commercial & industrial use.
If the product is still under warranty and after technical evaluation the product is determined to be defective as a result of manufacturing, not due to misuse or modification of the product, then Firman will replace the product.
Firman WH03242 Dual Fuel 3200W/4000W Generator Specifications
Output Specifications
| 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 |
9hrs |
| THD @ Full Load |
3%
|
Certifications
| CARB Certified |
Yes
|
| EPA Certified |
Yes
|
| cETL Certified |
No
|
| CO Alert |
Yes |
| NOM Certified |
No
|
| UL Certified |
No |
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 |
2 |
Generator Specifications
| Low Oil Shutoff |
Yes |
| Power Stream Alternator |
Yes |
| Cast Iron Sleeve |
Yes
|
| UPC |
840876132425 |
| Unit Dimensions |
23.2" x 17.8" x 17.9" |
| Unit Weight |
90 lbs. |
| Carton Dimensions |
28.7" x 18.9" x 19.3" |
| Carton Weight |
108 lbs. |
Fuel System Specifications
| Fuel Type |
Gas/LPG |
| Tank Size |
1.8 Gallon |
Steel/Plastic
|
Plastic
|
Wheel Kit
| Wheels |
5.5" Yellow plastic flat free |
| Handle |
U shape folding handle |
Firman WH03242 Dual Fuel 4000W Generator Instructional Videos
Firman WH03242 Manual