
Westinghouse iGen5000cv vs Firman W03382
Comparing the Westinghouse iGen5000cv and Firman W03382 inverter generators. See how their wattage, runtime, noise, and weight stack up for your needs.
- Firman W03382
- Westinghouse iGen5000cv
Comparison Overview
The Westinghouse iGen5000cv delivers noticeably more power, with 3900 running watts and 5000 starting watts compared to the Firman W03382's 3300 running watts and 3650 starting watts. That extra 600 running watts can make a real difference when you're trying to run multiple appliances at once or need to start something with a heavy motor, like a small air conditioner or a sump pump.
Runtime is another area where the Westinghouse pulls ahead significantly. At 25% load, the iGen5000cv runs for 18 hours, nearly double the Firman W03382's 10 hours. It's also quieter at 52 decibels versus the Firman's 58 decibels, a gap that's clearly noticeable in person. The tradeoff is weight: the Westinghouse tips the scales at 104.7 pounds, about 14 pounds heavier than the Firman's 91 pounds. Both units are gasoline-powered inverter generators backed by 3-year warranties.
Buyers who need more power and longer runtime without refueling will lean toward the Westinghouse, while those who prioritize portability and a lower price point may find the Firman a better fit for lighter-duty tasks.
Key takeaways
- Westinghouse iGen5000cv provides 3900 running watts versus Firman's 3300 running watts
- Westinghouse runs 18 hours at 25% load, nearly double the Firman's 10 hours
- Westinghouse is quieter at 52 decibels compared to Firman's 58 decibels
- Firman W03382 weighs 91 pounds, about 14 pounds lighter than the Westinghouse
- Both are gasoline inverter generators with 3-year warranties
Best use cases
Choose the Westinghouse iGen5000cv if you need a generator that can handle heavier loads and run longer between fill-ups. With 3900 running watts, it can comfortably power a combination of essentials during a power outage, such as a refrigerator, a few lights, a phone charger, and a window AC unit or space heater. The 18-hour runtime at quarter load means you could potentially get through an entire night and into the next day without refueling, which is a huge convenience during emergencies. Its 52-decibel noise level also makes it a strong candidate for campgrounds or RV parks where quiet hours matter. The downside is that at nearly 105 pounds, it's not the easiest generator to move around, especially if you're loading it into a truck bed or carrying it across uneven ground.
Choose the Firman W03382 if your power needs are more modest and you value a lighter, more portable package. At 91 pounds, it's easier to transport and store, making it a practical choice for tailgating, car camping, or as a backup for a small apartment or cabin. Its 3300 running watts can still handle a refrigerator, some lights, and a few small devices simultaneously. The 10-hour runtime at 25% load is respectable, though you'll be refueling more often during extended outages. Keep in mind that the 58-decibel noise level, while not loud by conventional generator standards, is noticeably louder than the Westinghouse. If you're using it in a noise-sensitive environment, that difference matters.
Both generators produce clean inverter power, so either one is safe for laptops, phones, and other sensitive electronics.
Verdict & recommendation
If your priority is maximizing power and runtime, the Westinghouse iGen5000cv is the stronger choice. It gives you more watts to work with, runs nearly twice as long on a tank, and does it all more quietly. These advantages make it especially well suited for home backup and extended outdoor use where refueling isn't convenient.
If you'd rather save some money and weight, and your power demands are on the lighter side, the Firman W03382 is a capable inverter generator that handles everyday portable power needs without the extra bulk. It's a solid pick for recreational use and light backup duty.
Ultimately, the right choice depends on how much power you actually need and how often you plan to move the unit around. Both carry the same 3-year warranty and deliver clean inverter power, so neither is a bad bet.
Last updated April 28, 2026
| Specification | Firman W03382 | Westinghouse iGen5000cv |
|---|---|---|
| General | ||
| Product type | Generator | Generator |
| Fuel | Gasoline | Gasoline |
| Inverter | Yes | Yes |
| Parallel capable | Yes | Yes |
| RV ready | Yes | Yes |
| Running watts | 3300 W | Winner: Winner: 3900 W |
| Starting watts | 3650 W | Winner: Winner: 5000 W |
| Noise (lower limit) | 58 dB | Winner: Winner: 52 dB |
| Weight | Winner: Winner: 91 lbs | 104.7 lbs |
| Run time @50% load | Not available | Not available |
| Run time @25% load | 10 h | Winner: Winner: 18 h |
| Fuel tank | 1.8 gal | 3.4 gal |
| Fuel gauge | No | Yes |
| Approx. dimensions (L × W × H) | 23.2 x 17.8 x 17.9 | 24.5 x 17.5 x 20 |
| Electrical | ||
| Voltage (AC) | 120 | 120 |
| Voltage (DC) | 12 | 5 |
| GFCI outlets | No | No |
| Covered outlets | Yes | Yes |
| Automatic Voltage Regulation | Yes | Yes |
| THD | <3% % | ≤3% % |
| Engine | ||
| Engine | Firman Max-Pro Series OHV 4-stroke, cast iron sleeve | 224 cc OHV 4-stroke |
| Alternator | Not available | Not available |
| Starting system | Recoil, Electric | Recoil |
| Warranty | ||
| Warranty | 3 years | 3 years |
| Power by fuel | ||
| Gasoline | Not available | Not available |
| Running watts | 3300 W | 3900 W |
| Starting watts | 3650 W | 5000 W |
| Running amps (120V) | Not available | Not available |
| Running amps (240V) | Not available | Not available |
| Peak amps (120V) | Not available | Not available |
| Peak amps (240V) | Not available | Not available |
| Run time @50% load | Not available | Not available |
| Run time @25% load | 10 h | 18 h |
| Other | ||
| Data center | Not available | Not available |
| Indicators | true | true |
| Compliance | CARB, EPA | EPA |
| Security | Not available | Not available |
| Spark arrestor | Yes | Yes |
| Neutral | Floating | Floating |
| UPC | 840876130810 | 850011336885 |
| Core / High-priority specs | ||
| Running Watts (Gasoline) | 3300 | 3900 |
| Starting Watts (Gasoline) | 3650 | 5000 |
| Runtime @ 25% Load (Gasoline) | 10 | 18 |
| AC Outlet Types | 1x Duplex 120V 20A (5-20R); 1x 120V 30A (TT-30R) | 1x Duplex 120V 20A (5-20R); 1x 120V 30A (TT-30R) |
| Electrical & power | ||
| Frequency | 60 | 60 |
| Engine & construction | ||
| Engine Type | OHV 4-stroke, cast iron sleeve | OHV 4-stroke |
| Engine Displacement | 193 | 224 |
| Cylinder Sleeve | cast iron sleeve | Not available |
| Engine Oil Type | Not available | 10W-30 |
| Runtime & fuel system | ||
| Runtime @ 25% Load (Gasoline) | 10 | 18 |
| Safety & compliance | ||
| Overload Protection System | Low oil and overload protection | Low oil and overload protection |
| Low Oil Protection | Yes | Yes |
| Carbon Monoxide Monitoring | No | Yes |
| Included equipment | ||
| Starting Components | Oil, funnel, tool kit, battery charger, battery charging cables, and battery | Not available |
| Documentation | Not available | Power output, fuel level, lifetime run hours, remaining run time and voltage |
| Included Accessories | Oil, funnel, tool kit, battery charger, battery charging cables, and battery | Oil, funnel, and tool kit |
| Warranty & identification | ||
| Commercial Warranty | 3 | Not available |
| Additional specs | ||
| Summary | The Firman W03382 is a 3300-watt inverter generator built around a 193cc OHV 4-stroke engine with a cast iron sleeve. This wattage class handles mid-range household loads: a microwave, refrigerator, and several power tools simultaneously, but not a central air conditioner or electric water heater. The inverter topology keeps total harmonic distortion below 3 percent, which means laptops, televisions, and phone chargers run safely without risk of damage from voltage spikes. At 91 pounds and 23.2 by 17.8 by 17.9 inches, it occupies roughly the footprint of a large toolbox. The dual starting system (recoil and electric) eliminates the frustration of pull-cord failures. This is a practical workhorse for RV owners, job site supervisors, and homeowners who need portable backup power without sacrificing clean electricity. | The Westinghouse iGen5000cv is a 5000-watt gas-powered portable inverter generator featuring a CO sensor, designed for RV readiness and equipped with a recoil start and LED data center. |
- Most PowerfulWestinghouse iGen5000cv3900W running
- QuietestWestinghouse iGen5000cv52 dB
- Longest Runtimeh at 50% load


