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.

  • Generac #8150 GP5500E
  • WEN DF8000X
  • Model #8150 GP5500E
    Model #8150 GP5500E

    Generac 5,500W Gas Generator

    5500W
    Running
    0 dB
    Noise
    View details
  • Model DF8000X
    Model DF8000X

    WEN 6,500W Dual-Fuel Generator

    6500W
    Running
    0 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 #8150 GP5500EWEN DF8000X
General
Product type
Generator
Generator
Fuel
Gasoline
Dual-Fuel
InverterNoNo
Parallel capableNoNo
RV readyNoYes
Running watts
5500 W
Winner: Winner: 6500 W
Starting watts
6875 W
Winner: Winner: 8000 W
Noise (lower limit)
0 dB
0 dB
Weight
163 lbs
Winner: Winner: 138.8 lbs
Run time @50% load
Winner: Winner: 10.5 h
Winner: Winner: 10.5 h
Run time @25% load
13.4 h
Not available—
Fuel tank
5.4 gal
6.7 gal
Fuel gaugeYesYes
Approx. dimensions (L × W × H)
30 x 27 x 25
28.5 x 24.6 x 25
Electrical
Voltage (AC)
120/240
120/240V 60 Hz
Voltage (DC)
Not available—
12
GFCI outletsYesNo
Covered outletsYesNo
Automatic Voltage RegulationYesYes
THD
Not available—
Not available—
Engine
Engine
Generac OHV 4-stroke
340 cc OHV 4-stroke
Alternator
Not available—
Not available—
Starting system
Recoil, Electric
Recoil, Electric
Warranty
Warranty
2 years
3 years
Power by fuel
GasolineNot available—Not available—
Running watts
5500 W
6500 W
Starting watts
6875 W
8000 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
10.5 h
10.5 h
Run time @25% load
Not available—
Not available—
PropaneNot available—Not available—
Running watts
Not available—
5850 W
Starting watts
Not available—
7200 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—
Other
Data center
Not available—
Not available—
Indicators
false
true
Compliance
CARB, EPA
EPA
Security
Not available—
Not available—
Spark arrestorYesYes
Neutral
true
Floating
UPC
696471104639
44459478003
Core / High-priority specs
Running Watts (Gasoline)
5500
6500
Running Watts (Propane)
Not available—
5850
Starting Watts (Gasoline)
6875
8000
Starting Watts (Propane)
Not available—
7200
Runtime @ 50% Load (Gasoline)
10.5
10.5
AC Outlet Types
2x Duplex 120V 20A (5-20R) GFCI1x 120/240V 30A (L14-30R)
2x Duplex 120V 20A (5-20R); 1x 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
298
340
Engine Oil Type
5W-30
Not available—
Runtime & fuel system
Runtime @ 50% Load (Gasoline)
10.5
10.5
Safety & compliance
Overload Protection System
Low oil and overload protection
Low oil and overload protection
Low Oil ProtectionYesNo
Carbon Monoxide MonitoringYesYes
Included equipment
Mobility Components
Yes
Not available—
Starting Components
Recoil, Electric
Not available—
Included Accessories
Oil, Funnel, Tool Kit, Battery, and Wheel Kit
Funnel, tool kit, propane hose, battery, and wheel kit
Warranty & identification
Commercial Warranty
2
3
Part Number
8150
Not available—
Additional specs
Summary
The Generac GP5500E is a 5,500 watt gasoline generator built to power whole house essentials during outages or on job sites. Its 6,875 starting watts handle motor driven appliances like well pumps and air conditioners that demand heavy inrush current. For homeowners and contractors who want reliable backup without crossing into stationary generator territory, the GP5500E delivers meaningful output with the refueling simplicity of gasoline.
The WEN DF8000X is an 8000-watt dual fuel portable generator featuring electric start, a 340cc engine, and a CO shutdown sensor, suitable for both home backup and recreational use.
  • Most Powerful
    WEN DF8000X
    6500W running
  • Quietest
    dB
  • Longest Runtime
    Generac #8150 GP5500E
    10.5h at 50% load
Where to buy
Prices can change. We update these automatically.
Generac #8150 GP5500E
Store links
No links yet.
WEN DF8000X
Store links
No links yet.
Disclosure: Some links may be affiliate links. Specs and comparisons are never hidden.