The FIRMAN WH03242 is a versatile dual-fuel whisper-series inverter generator engineered for camping, RV power, jobsite tools, and emergency home backup. Running on either standard unleaded gasoline or liquid propane, it delivers 4,000 peak starting watts and 3,200 running watts on gas (3,600W peak / 2,900W running on propane). Powered by a dependable 193cc FIRMAN Max-Pro 4-stroke OHV engine with electric push-button start and recoil backup. Features clean sine wave power (less than 3% THD) safe for sensitive computers and TVs, TT-30R RV ready outlet, folding handle, all-terrain flat-free wheels, and parallel capability.
Dual-Fuel Versatility: Runs on standard gasoline or liquid propane (LPG); includes quick-connect propane hose and regulator in the box. Clean Pure Sine Wave (<3% THD): Inverter electronics deliver ultra-clean harmonic power safe for smart TVs, phones, computers, and medical equipment.
RV-Ready TT-30R 30A Outlet: Directly powers standard 30-amp RV air conditioning and camper systems without requiring adapters. Electric Push-Button Start: Starts with a simple push of the ignition button; internal rechargeable battery and manual recoil backup included.
Compact Built-In Wheel Kit: Integrated folding handle and 5.5-inch flat-free rubber wheels make rolling over lawn and gravel effortless.
Figures for this model. If you need a detail that isn’t listed, ask us and we’ll check before you order.
Ask about this model| Starting Watts (Gas / LPG) | 4,000 W / 3,600 W |
|---|---|
| Running Watts (Gas / LPG) | 3,200 W / 2,900 W |
| Engine Displacement | 193cc FIRMAN Max-Pro 4-Stroke OHV with Cast Iron Sleeve |
| Starting System | Electric push button start & manual recoil backup |
| Fuel Tank Capacity | 1.8 Gallons (6.8 Liters) |
| Run Time @ 25% Load | Up to 9.0 hours on gasoline; up to 10 hours on 20 lb propane tank |
| Noise Level | 58 dB at 23 ft (Whisper quiet) |
| THD Rating | < 3% Pure Sine Wave |
| Outlets | 1x 120V TT-30R (30A RV), 1x 120V 5-20R Duplex (20A), 1x 12V DC, 1x USB (5V 2.1A) |
| Dimensions (L × W × H) | 23.2" × 17.8" × 17.9" |
| Dry Weight | 94.0 lbs (42.6 kg) |
| Certifications | EPA and CARB Certified (50-State legal) |
| Warranty | 3-Year Limited Manufacturer Warranty |
These come with the machine.
Reviews from FIRMAN WH03242 Inverter owners.
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Contact usYes. With 4,000 starting watts and a dedicated 30A TT-30R RV receptacle, it easily starts and runs standard 13,500 BTU and 15,000 BTU RV rooftop air conditioners.
It features an onboard 12V battery and a push-button start switch right on the front control panel. A manual recoil pull start is also provided as backup.
Yes. It features built-in parallel ports that connect to another FIRMAN inverter with an optional parallel kit to provide up to 50 amps of continuous power.
At 25% load, it produces just 58 decibels at 23 feet, allowing normal conversation right next to the unit.
Yes. Propane does not gum up the carburetor like old gasoline does, making it the ideal fuel for standby emergency readiness.
Free residential liftgate delivery across the 48 contiguous states with 30-day money back returns and full manufacturer warranty support.
Delivery is free to residential addresses. Orders ship from our Dallas, TX warehouse, and larger items arrive by freight with a liftgate drop at your curb or driveway. You get a tracking number by email as soon as the carrier picks up your order.
