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

  • Generac #7951 RS8000E
  • Predator 72935
  • Model #7951 RS8000E
    Model #7951 RS8000E

    Generac 8,000W Gas Generator

    8000W
    Running
    0 dB
    Noise
    View details
  • Model 72935
    Model 72935

    Predator 7,250W Gas Generator

    7250W
    Running
    78 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
SpecificationGenerac #7951 RS8000EPredator 72935
General
Product type
Generator
Generator
Fuel
Gasoline
Gasoline
InverterNoNo
Parallel capableNoNo
RV readyNoNo
Running watts
Winner: Winner: 8000 W
7250 W
Starting watts
Winner: Winner: 10000 W
9000 W
Noise (lower limit)
0 dB
Winner: Winner: 78 dB
Weight
213.8 lbs
Winner: Winner: 195 lbs
Run time @50% load
10.5 h
Winner: Winner: 13 h
Run time @25% load
Not available
Not available
Fuel tank
7.5 gal
8 gal
Fuel gaugeYesNo
Approx. dimensions (L × W × H)
30 x 27.1 x 25.7
26-7/8 x 22 x 22-3/4
Electrical
Voltage (AC)
120/240
120/240V
Voltage (DC)
Not available
Not available
GFCI outletsYesNo
Covered outletsYesNo
Automatic Voltage RegulationYesNo
THD
Not available
Not available
Engine
Engine
420 cc OHV 4-stroke
Not available
Alternator
Not available
Not available
Starting system
Recoil, Electric
Not available
Warranty
Warranty
3 years
Not available
Power by fuel
GasolineNot availableNot available
Running watts
8000 W
Not available
Starting watts
10000 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
10.5 h
Not available
Run time @25% load
Not available
Not available
Other
Data center
Not available
Not available
Indicators
false
Not available
Compliance
EPA
Not available
Security
Not available
Not available
Spark arrestorYesNo
Neutral
true
Not available
UPC
696471075823
Not available
Core / High-priority specs
Running Watts (Gasoline)
8000
Not available
Starting Watts (Gasoline)
10000
Not available
Runtime @ 50% Load (Gasoline)
10.5
Not available
AC Outlet Types
2x Duplex 120V 20A (5-20R) GFCI1x 120/240V 30A (L14-30R)
Not available
Electrical & power
Frequency
60
60
Engine & construction
Engine Type
OHV 4-stroke
Not available
Engine Displacement
420
420
Engine Oil Type
10W-30/ SAE30
SAE 10W-30 above 32° F SAE 5W-30 at 32° F or below
Runtime & fuel system
Runtime @ 50% Load (Gasoline)
10.5
Not available
Safety & compliance
Overload Protection System
SecurityLow oil and overload protection
Not available
Low Oil ProtectionYesYes
Carbon Monoxide MonitoringNoYes
Included equipment
Included Accessories
Oil, battery charger, extension cord, battery, and wheel kit
Not available
Warranty & identification
Residential Warranty
3
Not available
Additional specs
Summary
The Generac RS8000E is a gasoline powered 8000 watt generator built for serious power demands. With 10000 watt starting capacity, this unit handles high draw appliances and tools simultaneously. Running a central air conditioner, refrigerator, sump pump, and several lights at once sits well within reach. For homeowners facing extended outages or contractors powering a full spread of tools on a job site, the RS8000E functions as a legitimate whole house or whole site backup solution.
The PREDATOR® 9000 Max. Starting Watt, 7250 Max. Running Watt Gas-Powered Portable Generator is built with reliability and safety in mind. Powered by a dependable 420cc PREDATOR® gas engine, this generator is ideal for emergencies, jobsites, and home backup.
  • Most Powerful
    Generac #7951 RS8000E
    8000W running
  • Quietest
    Predator 72935
    78 dB
  • Longest Runtime
    Predator 72935
    13h at 50% load
Where to buy
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Generac #7951 RS8000E
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Predator 72935
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