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  • Generac #8063 GP9500ETF
  • Genmax GM15000ET
  • Model #8063 GP9500ETF
    Model #8063 GP9500ETF

    Generac 9,500W Tri-Fuel Generator

    9500W
    Running
    0 dB
    Noise
    View details
  • Model GM15000ET
    Model GM15000ET

    Genmax 13,000W Tri-Fuel Generator

    13000W
    Running
    76 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 #8063 GP9500ETFGenmax GM15000ET
General
Product type
Generator
Generator
Fuel
Tri-Fuel
Tri-Fuel
InverterNoNo
Parallel capableNoNo
RV readyYesYes
Running watts
9500 W
Winner: Winner: 13000 W
Starting watts
12500 W
Winner: Winner: 15000 W
Noise (lower limit)
0 dB
Winner: Winner: 76 dB
Weight
Winner: Winner: 219 lbs
242 lbs
Run time @50% load
9.5 h
Winner: Winner: 11 h
Run time @25% load
14 h
Not available
Fuel tank
7.5 gal
10.5 gal
Fuel gaugeYesYes
Approx. dimensions (L × W × H)
27.5 x 27.1 x 27.6
28 x 31.6 x 28.7
Electrical
Voltage (AC)
120/240
120/240
Voltage (DC)
Not available
12
GFCI outletsYesNo
Covered outletsYesYes
Automatic Voltage RegulationYesYes
THD
Not available
23 %
Engine
Engine
OHV 4-stroke
520 cc OHV 4-stroke
Alternator
Not available
Not available
Starting system
Recoil, Electric
Recoil, Electric, Remote
Warranty
Warranty
3 years
1 years
Power by fuel
GasolineNot availableNot available
Running watts
9500 W
11000 W
Starting watts
12500 W
15000 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
9.5 h
11 h
Run time @25% load
14 h
Not available
Natural gasNot availableNot available
Running watts
7000 W
12000 W
Starting watts
9000 W
12000 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
Not available
Not available
PropaneNot availableNot available
Running watts
8550 W
13000 W
Starting watts
11250 W
13000 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
4.5 h
Not available
Run time @25% load
6 h
Not available
Other
Data center
Not available
Not available
Indicators
false
true
Compliance
EPA, ANSI/PGMA G300-2023
EPA, ANSI/PGMA G300-2023
Security
Not available
Not available
Spark arrestorYesYes
Neutral
true
Floating
UPC
696471104523
760790901382
Core / High-priority specs
Running Watts (Gasoline)
9500
11000
Running Watts (Propane)
8550
13000
Running Watts (Natural Gas)
7000
12000
Starting Watts (Gasoline)
12500
15000
Starting Watts (Propane)
11250
13000
Starting Watts (Natural Gas)
9000
12000
Runtime @ 50% Load (Gasoline)
9.5
11
Runtime @ 50% Load (Propane)
4.5
Not available
Runtime @ 25% Load (Gasoline)
14
Not available
Runtime @ 25% Load (Propane)
6
Not available
AC Outlet Types
1x Duplex 120V 20A (5-20R) GFCI; 1x 120/240V 30A (L14-30R); 1x 120/240V 50A (14-50R)
AC outlets3x Duplex 120V 20A (5-20R)1x 120/240V 30A (L14-30R)1x 120/240V 50A (14-50R)
Electrical & power
Frequency
60
60
Engine & construction
Engine Type
OHV 4-stroke
OHV 4-stroke
Engine Displacement
400
520
Engine Oil Type
10W-30 / SAE 30
SAE 10W/30
Runtime & fuel system
Runtime @ 25% Load (Gasoline)
14
Not available
Runtime @ 50% Load (Gasoline)
9.5
11
Runtime @ 50% Load (Propane)
4.5
Not available
Safety & compliance
Overload Protection System
Low oil and overload protection, CO monitoring
Low oil and overload protection
Low Oil ProtectionYesYes
Carbon Monoxide MonitoringYesYes
Included equipment
Mobility Components
Yes
Not available
Starting Components
Recoil, Electric
Recoil starter; Electric starter; Remote starter
Fuel Connection Components
propane hose
Not available
Included Accessories
Oil, propane hose, battery, and wheel kit
Oil, funnel, tool kit, key fob, battery charger, natural gas hose with NPT adapter, propane hose, cover, neutral bonding plug, battery, and wheel kit
Warranty & identification
Residential Warranty
3
Not available
Commercial Warranty
Not available
1
Additional specs
Summary
The Generac GP9500ETF is a 9,500-watt tri-fuel generator built for whole-house backup and job site power. Its ability to run on gasoline, propane, or natural gas means users gain real fuel flexibility when one source becomes scarce during extended outages. The 12,500 starting watts provide enough surge capacity to handle motor-driven loads like well pumps and air handler fans without tripping breakers. This is a stationary workhorse, not a portable unit.
The Genmax GM15000ET is a 13,000-watt tri-fuel generator built for serious power demands. With 13,000 running watts and 15,000 starting watts, this unit can handle whole-house backup scenarios, including central air conditioning, refrigerators, well pumps, and multiple circuits running simultaneously. Because it runs on gasoline, propane, or natural gas, owners gain real flexibility during emergencies when one fuel source might be unavailable or during extended outages when tapping into a home natural gas line eliminates refueling trips entirely.
  • Most Powerful
    Genmax GM15000ET
    13000W running
  • Quietest
    Genmax GM15000ET
    76 dB
  • Longest Runtime
    Genmax GM15000ET
    11h at 50% load
Where to buy
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Generac #8063 GP9500ETF
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Genmax GM15000ET
Store links
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