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  • DuroMax XP11000iHT
  • Genmax GM10500iETC
  • Model XP11000iHT
    Model XP11000iHT

    DuroMax 9,000W Tri-Fuel Generator

    9000W
    Running
    61 dB
    Noise
    View details
  • Model GM10500iETC
    Model GM10500iETC

    Genmax 8,500W Tri-Fuel Generator

    8500W
    Running
    64 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
SpecificationDuroMax XP11000iHTGenmax GM10500iETC
General
Product type
Generator
Generator
Fuel
Tri-Fuel
Tri-Fuel
InverterYesYes
Parallel capableYesYes
RV readyYesYes
Running watts
Winner: Winner: 9000 W
8500 W
Starting watts
Winner: Winner: 11000 W
10500 W
Noise (lower limit)
Winner: Winner: 61 dB
64 dB
Weight
Winner: Winner: 216 lbs
244.7 lbs
Run time @50% load
Winner: Winner: 9 h
Not available
Run time @25% load
18 h
14 h
Fuel tank
7.1 gal
6.9 gal
Fuel gaugeYesYes
Approx. dimensions (L × W × H)
26.2 x 25 x 29.6
30.9 x 22.6 x 29.3
Electrical
Voltage (AC)
120/240V 60 Hz
120/240
Voltage (DC)
48-58
12
GFCI outletsYesNo
Covered outletsYesYes
Automatic Voltage RegulationYesYes
THD
3 %
≤3% %
Engine
Engine
459 cc OHV 4-stroke
458 cc OHV 4-stroke
Alternator
Not available
Not available
Starting system
Recoil, Electric, Remote
Recoil, Electric, Remote
Warranty
Warranty
5 years
1 years
Power by fuel
GasolineNot availableNot available
Running watts
9000 W
8500 W
Starting watts
11000 W
10500 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 h
Not available
Run time @25% load
18 h
14 h
Natural gasNot availableNot available
Running watts
7700 W
6800 W
Starting watts
9500 W
8400 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
8000 W
Starting watts
10450 W
9500 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 h
Not available
Run time @25% load
8 h
Not available
Other
Data center
Not available
Not available
Indicators
false
true
Compliance
EPA, ANSI/PGMA G300-2023
CARB, EPA, ANSI/PGMA G300-2023
Security
Not available
Not available
Spark arrestorYesYes
Neutral
true
Floating
UPC
811640017095
742332650842
Core / High-priority specs
Running Watts (Gasoline)
9000
8500
Running Watts (Propane)
8550
8000
Running Watts (Natural Gas)
7700
6800
Starting Watts (Gasoline)
11000
10500
Starting Watts (Propane)
10450
9500
Starting Watts (Natural Gas)
9500
8400
Runtime @ 50% Load (Gasoline)
9
Not available
Runtime @ 50% Load (Propane)
4
Not available
Runtime @ 25% Load (Gasoline)
18
14
Runtime @ 25% Load (Propane)
8
Not available
AC Outlet Types
2x Duplex 120V 20A (5-20R); 1x 120/240V 30A (L14-30R); 1x 120/240V 50A (14-50R)
2x 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
459 cc OHV 4-stroke
458 cc OHV 4-stroke
Engine Displacement
459
458
Engine Oil Type
10W-30
SAE 10W/30
Runtime & fuel system
Runtime @ 25% Load (Gasoline)
18
14
Runtime @ 50% Load (Gasoline)
9
Not available
Runtime @ 50% Load (Propane)
4
Not available
Safety & compliance
Overload Protection System
Low oil and overload protection
Low oil and overload protection
Low Oil ProtectionYesYes
Carbon Monoxide MonitoringYesYes
Included equipment
Starting Components
Recoil, Electric, Remote
Recoil, Electric, Remote
Included Accessories
Funnel, tool kit, key fob, battery charger, natural gas hose with NPT adapter, propane hose, battery charging cables, and battery
Funnel, tool kit, key fob, battery charger, natural gas hose with NPT adapter, propane hose, RV adapter, cover, neutral bonding plug, and battery
Warranty & identification
Residential Warranty
Not available
1
Commercial Warranty
5
1
Additional specs
Summary
The DuroMax XP11000iHT is a 9,000-watt tri-fuel inverter generator built for job sites and RV applications that demand both power and fuel flexibility. Running on gasoline, propane, or natural gas, it delivers enough wattage to power air compressors, welders, and multiple household circuits simultaneously. The tri-fuel capability eliminates fuel sourcing constraints on extended projects.
The Genmax GM10500iETC is an 8500-watt tri-fuel inverter generator that runs on gasoline, propane, or natural gas. This wattage handles mid-to-large loads like air conditioning units, power tools, and multiple household appliances simultaneously. The tri-fuel flexibility means users can switch fuels based on availability and cost, a significant advantage for both emergency backup and remote work sites.
  • Most Powerful
    DuroMax XP11000iHT
    9000W running
  • Quietest
    DuroMax XP11000iHT
    61 dB
  • Longest Runtime
    DuroMax XP11000iHT
    9h at 50% load
Where to buy
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DuroMax XP11000iHT
Store links
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Genmax GM10500iETC
Store links
No links yet.
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