All GeneratorsDealsCompareMy PicksGenerator Finder
All GeneratorsDealsCompareMy PicksGenerator Finder
  • Guides
  • Blog
  • FAQ
  • Rankings

Helping you find the right generator for your needs with objective specs and clear comparisons.

Categories

  • Quiet Generators
  • Inverter Generators
  • Dual-Fuel
  • Home Backup
  • Portable
  • All Brands

Resources

  • Rankings
  • Compare Generators
  • Generator Finder
  • Deals
  • Buying Guides
  • Blog
  • FAQ
  • About Us

Legal

  • Terms of Service
  • Privacy Policy
  • DMCA
  • Disclosures

Disclosure

RightGenerator is reader-supported. When you buy through links on our site, we may earn an affiliate commission at no cost to you.

© 2026 RightGenerator. All rights reserved.

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.

  • Genmax GM6000iED
  • Sportsman GEN7500DF-SS
  • Model GM6000iED
    Model GM6000iED

    Genmax 5,250W Dual-Fuel Generator

    5250W
    Running
    63 dB
    Noise
    View details
  • Model GEN7500DF-SS
    Model GEN7500DF-SS

    Sportsman 6,000W Dual-Fuel Generator

    6000W
    Running
    80 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
SpecificationGenmax GM6000iEDSportsman GEN7500DF-SS
General
Product type
Generator
Generator
Fuel
Dual-Fuel
Dual-Fuel
InverterYesNo
Parallel capableNoNo
RV readyNoYes
Running watts
5250 W
Winner: Winner: 6000 W
Starting watts
6000 W
Winner: Winner: 7500 W
Noise (lower limit)
Winner: Winner: 63 dB
80 dB
Weight
Winner: Winner: 117.9 lbs
194 lbs
Run time @50% load
8.5 h
Winner: Winner: 9 h
Run time @25% load
13 h
Not available—
Fuel tank
3.8 gal
6.2 gal
Fuel gaugeYesYes
Approx. dimensions (L × W × H)
24 x 18.5 x 21.1
26.5 x 19.5 x 18
Electrical
Voltage (AC)
120/240
120/240
Voltage (DC)
5
12
GFCI outletsYesYes
Covered outletsYesNo
Automatic Voltage RegulationYesYes
THD
<3% %
above 10% %
Engine
Engine
312 cc OHV 4-stroke
420 OHV 4-stroke
Alternator
Not available—
Not available—
Starting system
Recoil, Electric, Remote
Recoil, Electric
Warranty
Warranty
1 years
1 years
Power by fuel
GasolineNot available—Not available—
Running watts
5250 W
6000 W
Starting watts
6000 W
7500 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
8.5 h
9 h
Run time @25% load
Not available—
Not available—
PropaneNot available—Not available—
Running watts
4750 W
5400 W
Starting watts
5500 W
6700 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
7.9 h
5 h
Run time @25% load
Not available—
Not available—
Other
Data center
Not available—
Not available—
Indicators
true
false
Compliance
EPA, ANSI/PGMA G300-2023
EPA
Security
Not available—
Not available—
Spark arrestorYesYes
Neutral
Not available—
Not available—
UPC
713424639038
27077082364
Core / High-priority specs
Running Watts (Gasoline)
5250
6000
Running Watts (Propane)
4750
5400
Starting Watts (Gasoline)
6000
7500
Starting Watts (Propane)
5500
6700
Runtime @ 50% Load (Gasoline)
8.5
9
Runtime @ 50% Load (Propane)
7.9
5
AC Outlet Types
1x Duplex 120V 20A (5-20R); 1x 120/240V 30A (L14-30R)
2x Duplex 120V 20A (5-20R) GFCI1x 120V 30A (TT-30R)1x 120/240V 30A (L14-30R)
Electrical & power
Frequency
60
60
Engine & construction
Engine Type
OHV 4-stroke
OHV 4-stroke
Engine Displacement
312
420
Engine Oil Type
10W-30
SAE10W-30
Runtime & fuel system
Runtime @ 50% Load (Gasoline)
8.5
9
Runtime @ 50% Load (Propane)
7.9
5
Safety & compliance
Overload Protection System
Low oil and overload protection, CO monitoring
Low oil and overload protection
Low Oil ProtectionYesYes
Carbon Monoxide MonitoringYesNo
Included equipment
Starting Components
Recoil, Electric, Remote
Not available—
Included Accessories
Funnel, tool kit, key fob, propane hose, and battery
Funnel, tool kit, propane hose, battery charging cables, and wheel kit
Warranty & identification
Residential Warranty
1
Not available—
Commercial Warranty
1
Not available—
Additional specs
Summary
The Genmax GM6000iED is a 5,250-watt dual-fuel inverter generator that handles mid-range backup loads like refrigerators, window air conditioners, and sump pumps simultaneously. Dual-fuel capability lets users switch between gasoline and propane based on availability or storage preference, a practical advantage during prolonged outages. Inverter technology delivers clean power below 3% THD, making it safe for laptops, smartphones, and microprocessor-driven devices without risk of voltage spikes that degrade circuits over time.
The Sportsman GEN7500DF-SS is a dual fuel generator capable of delivering 7,500 surge watts and 6,000 running watts, powered by a 15 HP 4-stroke OHV engine with both electric and recoil start options.
  • Most Powerful
    Sportsman GEN7500DF-SS
    6000W running
  • Quietest
    Genmax GM6000iED
    63 dB
  • Longest Runtime
    Sportsman GEN7500DF-SS
    9h at 50% load
Where to buy
Prices can change. We update these automatically.
Genmax GM6000iED
Store links
No links yet.
Sportsman GEN7500DF-SS
Store links
No links yet.
Disclosure: Some links may be affiliate links. Specs and comparisons are never hidden.