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Compare Generators Side-by-Side

Select up to 4 generators to compare specs, power output, noise levels, runtime and more. Your compare URL is shareable.

  • Firman H08051
  • VEVOR R2500iSP
  • Model H08051
    Model H08051

    Firman 8,000W Dual-Fuel Generator

    8000W
    Running
    74 dB
    Noise
    View details
  • Model R2500iSP
    Model R2500iSP

    VEVOR 2,300W Gas Generator

    2300W
    Running
    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 H08051VEVOR R2500iSP
General
Product type
Generator
Not available—
Fuel
Dual-Fuel
Gasoline
InverterNoNo
Parallel capableNoNo
RV readyYesNo
Running watts
Winner: Winner: 8000 W
2300 W
Starting watts
Winner: Winner: 10000 W
3000 W
Noise (lower limit)
Winner: Winner: 74 dB
Not available—
Weight
212 lbs
Winner: Winner: 55.1 lbs
Run time @50% load
Winner: Winner: 12 h
5 h
Run time @25% load
Not available—
Not available—
Fuel tank
8 gal
1.2 gal
Fuel gaugeYesNo
Approx. dimensions (L × W × H)
30.2 x 27.5 x 26.3
20.5 x 12.6 x 17.7
Electrical
Voltage (AC)
120/240
120
Voltage (DC)
Not available—
Not available—
GFCI outletsYesNo
Covered outletsYesNo
Automatic Voltage RegulationYesNo
THD
25 %
Not available—
Engine
Engine
Firman Max-Pro Series OHV 4-stroke, cast iron sleeve
122cc four-stroke engine
Alternator
Not available—
Not available—
Starting system
Recoil, Electric
Not available—
Warranty
Warranty
3 years
Not available—
Power by fuel
GasolineNot available—Not available—
Running watts
8000 W
2300 W
Starting watts
10000 W
3000 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
12 h
5 h
Run time @25% load
Not available—
Not available—
PropaneNot available—Not available—
Running watts
7250 W
Not available—
Starting watts
9050 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
5 h
Not available—
Run time @25% load
Not available—
Not available—
Other
Data center
Not available—
Not available—
Indicators
false
Not available—
Compliance
CARB, EPA
Not available—
Security
Not available—
Not available—
Spark arrestorYesNo
Neutral
Bonded to frame
Not available—
UPC
840876180518
Not available—
Core / High-priority specs
Running Watts (Gasoline)
8000
2300
Running Watts (Propane)
7250
Not available—
Starting Watts (Gasoline)
10000
3000
Starting Watts (Propane)
9050
Not available—
Runtime @ 50% Load (Gasoline)
12
5
Runtime @ 50% Load (Propane)
5
Not available—
AC Outlet Types
1x Duplex 120V 20A (5-20R); 1x 120V 30A (L5-30R); 1x 120/240V 30A (L14-30R); 1x 120/240V 50A (14-50R)
Not available—
Electrical & power
Frequency
60
60
Engine & construction
Engine Type
OHV 4-stroke
Not available—
Engine Displacement
439
122
Cylinder Sleeve
Cast iron
Not available—
Runtime & fuel system
Runtime @ 50% Load (Gasoline)
12
5
Runtime @ 50% Load (Propane)
5
Not available—
Safety & compliance
Overload Protection System
Low oil and overload protection
Not available—
Low Oil ProtectionYesNo
Carbon Monoxide MonitoringNoYes
Included equipment
Mobility Components
Wheel kit
Not available—
Starting Components
Recoil, Electric
Not available—
Fuel Connection Components
Propane hose
Not available—
Included Accessories
Oil, funnel, tool kit, propane hose, battery, and wheel kit
Not available—
Warranty & identification
Commercial Warranty
3
Not available—
Part Number
Not available—
R2500iSP
Additional specs
Summary
The Firman H08051 is an 8,000-watt dual-fuel generator built to power job sites, homes during outages, and RV setups. Running on gasoline, it delivers 8,000 watts continuously and 10,000 watts at startup, enough to run a refrigerator, microwave, and multiple power tools at once. Switch to propane and the output drops to 7,250 watts running and 9,050 watts starting, a trade-off for fuel flexibility and longer shelf life. The 439cc cast-iron engine is engineered for durability in commercial and residential use. At 212 pounds, this is a stationary or semi-portable unit, not a grab-and-go machine.
The VEVOR R2500iSP is a gasoline generator with a rated wattage of 2300 and a peak wattage of 3000.
  • Most Powerful
    Firman H08051
    8000W running
  • Quietest
    Firman H08051
    74 dB
  • Longest Runtime
    Firman H08051
    12h at 50% load
Where to buy
Prices can change. We update these automatically.
Firman H08051
Store links
No links yet.
VEVOR R2500iSP
Store links
No links yet.
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