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Westinghouse iGen5000c vs Firman W03082

Westinghouse iGen5000c vs Firman W03082

Comparing the Westinghouse iGen5000c and Firman W03082 inverter generators. See how 3900 vs 3000 running watts, runtime, and weight stack up for your needs.

  • Firman W03082
  • Westinghouse iGen5000c

Comparison Overview

The Westinghouse iGen5000c delivers significantly more power at 3900 running watts and 5000 starting watts, compared to the Firman W03082's 3000 running watts and 3300 starting watts. That 30% power advantage makes a real difference when you're running multiple appliances or need to start something with a heavy motor, like a small air conditioner or a sump pump. Both are inverter generators, so they produce clean electricity safe for sensitive electronics.

Runtime is another area where the Westinghouse pulls ahead convincingly. At 25% load, the iGen5000c runs for 18 hours, double the Firman W03082's 9 hours. The Westinghouse is also quieter at 52 dB versus the Firman's 58 dB, which is a noticeable difference in real-world listening. The tradeoff is weight: the iGen5000c tips the scales at 105.8 lbs, about 16 pounds heavier than the Firman's 90 lbs.

Both generators run on gasoline, carry a 3-year warranty, and offer inverter-quality power. Buyers who prioritize portability and a lower price point may lean toward the Firman, while those who need more power, longer runtime, and quieter operation will find the Westinghouse worth the extra weight.

Key takeaways

  • Westinghouse iGen5000c delivers 3900 running watts, 30% more than the Firman's 3000
  • Westinghouse runs 18 hours at 25% load, double the Firman's 9 hours
  • Firman W03082 weighs 90 lbs, about 16 pounds lighter than the Westinghouse
  • Westinghouse operates at 52 dB, noticeably quieter than the Firman's 58 dB
  • Both are inverter generators with clean power safe for sensitive electronics
  • Both carry a 3-year warranty and run on gasoline

Best use cases

Choose the Westinghouse iGen5000c 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 refrigerator, a few lights, a fan, and a phone charger all at once, and still have headroom for a window AC unit or a power tool. The 18-hour runtime at 25% load means you can run it overnight during a power outage without getting up to refuel. At 52 dB, it's roughly as loud as a normal conversation, making it a reasonable choice for campgrounds or neighborhoods where noise matters. If home backup during storms or extended outages is your primary concern, this is the stronger pick. Just be aware that at nearly 106 pounds, it's not something you'll want to carry far without wheels or a helping hand.

Choose the Firman W03082 if portability is a top priority and your power needs are more modest. At 90 pounds, it's easier to load into a truck bed or move around a campsite. Its 3000 running watts will handle the basics: lights, a fridge, charging devices, and a few small appliances. It's a solid option for tailgating, car camping, or as a light-duty backup for essentials during short outages. The tradeoff is real, though. You get roughly half the runtime (9 hours at 25% load) and noticeably less power, so running a window AC unit or multiple high-draw appliances simultaneously may push it to its limits. The 58 dB noise level is still reasonable, but it is audibly louder than the Westinghouse in a side-by-side comparison.

Both generators share inverter technology and the same warranty coverage, so the core decision comes down to how much power and runtime you actually need versus how much weight you're willing to carry.

Verdict & recommendation

If your priority is maximum power, long runtime, and quieter operation, the Westinghouse iGen5000c is the better fit. It handles heavier loads with ease and can run nearly twice as long as the Firman on a single tank, making it ideal for home backup or extended outdoor use. If you value a lighter, more portable unit and your electrical needs are relatively simple, the Firman W03082 gets the job done at a lower weight. Neither generator is a bad choice, but they serve different scales of need. Think honestly about what you plan to plug in and how long you need it to run, and the right pick should be clear.

Last updated April 9, 2026

  • Model W03082
    Model W03082

    Firman 3,000W Gas Generator

    3000W
    Running
    58 dB
    Noise
    View details
  • Model iGen5000c
    Model iGen5000c

    Westinghouse 3,900W Gas Generator

    3900W
    Running
    52 dB
    Noise
    View details
Quick charts
Each chart uses its own Y-axis scale (so numbers are comparable within a chart).
Running watts
W
Starting watts
W
Noise
dB
Runtime @50%
h
Running watts by fuel
Shows how output changes across gasoline/propane/natural gas (when available).
Generator Specifications Comparison
SpecificationFirman W03082Westinghouse iGen5000c
General
Product type
Generator
Generator
Fuel
Gasoline
Gasoline
InverterYesYes
Parallel capableYesNo
RV readyYesYes
Running watts
3000 W
Winner: Winner: 3900 W
Starting watts
3300 W
Winner: Winner: 5000 W
Noise (lower limit)
58 dB
Winner: Winner: 52 dB
Weight
Winner: Winner: 90 lbs
105.8 lbs
Run time @50% load
Not available
Winner: Winner: 15 h
Run time @25% load
9 h
18 h
Fuel tank
1.8 gal
3.4 gal
Fuel gaugeNoNo
Approx. dimensions (L × W × H)
23.2 x 17.8 x 17.9
24.5 x 17.5 x 20
Electrical
Voltage (AC)
120V 60 Hz
120V
Voltage (DC)
12V
Not available
GFCI outletsNoNo
Covered outletsYesNo
Automatic Voltage RegulationYesNo
THD
<3% %
≤ 3% %
Engine
Engine
171 cc Firman Max-Pro Series OHV 4-stroke, cast iron sleeve
Not available
Alternator
Not available
Not available
Starting system
Recoil, Electric
Not available
Warranty
Warranty
3 years
3 years
Power by fuel
GasolineNot availableNot available
Running watts
3000 W
Not available
Starting watts
3300 W
Not available
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
9 h
Not available
Other
Data center
Not available
Not available
Indicators
true
Not available
Compliance
CARB, EPA
Not available
Security
Not available
Not available
Spark arrestorYesNo
Neutral
Floating
Not available
UPC
840876130827
Not available
Core / High-priority specs
Running Watts (Gasoline)
3000
Not available
Starting Watts (Gasoline)
3300
Not available
Runtime @ 25% Load (Gasoline)
9
Not available
AC Outlet Types
1x Duplex 120V 20A (5-20R); 1x 120V 30A (TT-30R)
Not available
Electrical & power
Frequency
60
60
Engine & construction
Engine Type
OHV 4-stroke
Not available
Engine Displacement
171
224
Cylinder Sleeve
Cast iron sleeve
Not available
Engine Oil Type
Not available
10W-30
Runtime & fuel system
Runtime @ 25% Load (Gasoline)
9
Not available
Safety & compliance
Overload Protection System
Low oil and overload protection
Not available
Low Oil ProtectionYesYes
Carbon Monoxide MonitoringNoYes
Included equipment
Included Accessories
Oil, funnel, tool kit, battery charger, battery charging cables, and battery
Not available
Warranty & identification
Commercial Warranty
3
Not available
Additional specs
Summary
The Firman W03082 is a 3000-watt inverter generator built around a 171cc OHV 4-stroke engine. At this wattage, it can power most household appliances simultaneously: a refrigerator (600W), microwave (1000W), and several lights and chargers without strain. The 3300-watt peak handles motor startup surges for tools like circular saws or air compressors. Because it runs on gasoline with a 1.8-gallon tank, refueling happens frequently at higher loads, but the 9-hour runtime at 25% load means light-duty camping or backup power runs through a full day without interruption. The inverter topology keeps total harmonic distortion below 3%, which means laptops, phones, and sensitive medical equipment charge safely without risk of damage from dirty power.
The Westinghouse iGen5000c is a portable inverter generator designed for both recreational and emergency use. It offers 5,000 peak watts and 3,900 running watts, making it suitable for powering a variety of appliances and electronic devices. Its compact design, combined with features like remote electric start and an LED data center, enhances user convenience.
  • Most Powerful
    Westinghouse iGen5000c
    3900W running
  • Quietest
    Westinghouse iGen5000c
    52 dB
  • Longest Runtime
    Westinghouse iGen5000c
    15h at 50% load
Where to buy
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Firman W03082
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Westinghouse iGen5000c
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