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

  • Powerhorse 9000ES
  • Yamaha EF5500D
  • Model 9000ES
    Model 9000ES

    Powerhorse 7,250W Gas Generator

    7250W
    Running
    75 dB
    Noise
    View details
  • Model EF5500D
    Model EF5500D

    Yamaha 4,500W Gas Generator

    4500W
    Running
    74.1 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
SpecificationPowerhorse 9000ESYamaha EF5500D
General
Product type
Generator
Generator
Fuel
Gasoline
Gasoline
InverterNoNo
Parallel capableNoNo
RV readyNoNo
Running watts
Winner: Winner: 7250 W
4500 W
Starting watts
Winner: Winner: 9000 W
5500 W
Noise (lower limit)
75 dB
Winner: Winner: 74.1 dB
Weight
260 lbs
Winner: Winner: 216.1 lbs
Run time @50% load
9.6 h
Winner: Winner: 13.5 h
Run time @25% load
Not available
Not available
Fuel tank
6.6 gal
6.9 gal
Fuel gaugeYesYes
Approx. dimensions (L × W × H)
29.3 x 26.6 x 26.4
29.1 x 29 x 31.5 in
Electrical
Voltage (AC)
120/240V 60 Hz
120/240V 60 Hz
Voltage (DC)
12
Not available
GFCI outletsNoYes
Covered outletsNoNo
Automatic Voltage RegulationYesYes
THD
Less than 5% %
Not available
Engine
Engine
420 cc OHV 4-stroke
Yamaha MZ360 OHV 4-stroke
Alternator
Not available
Not available
Starting system
Recoil, Electric
Recoil
Warranty
Warranty
2 years
3 years
Power by fuel
GasolineNot availableNot available
Running watts
7250 W
4500 W
Starting watts
9000 W
5500 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
9.6 h
13.5 h
Run time @25% load
Not available
Not available
Other
Data center
Not available
Not available
Indicators
true
true
Compliance
EPA
CARB, EPA
Security
Not available
Not available
Spark arrestorYesYes
Neutral
Floating
true
UPC
Not available
Not available
Core / High-priority specs
Running Watts (Gasoline)
7250
4500
Starting Watts (Gasoline)
9000
5500
Runtime @ 50% Load (Gasoline)
9.6
13.5
AC Outlet Types
4x Duplex 120V 20A (5-20R); 1x 120V 30A (L5-30R); 1x 120/240V 30A (L14-30R)
2x Duplex 120V 20A (5-20R) GFCI; 1x 120V 30A (L5-30R); 1x 120/240V 30A (L14-30R)
Electrical & power
Frequency
60
60
Engine & construction
Engine Type
OHV 4-stroke
OHV 4-stroke
Engine Displacement
420
358
Runtime & fuel system
Runtime @ 50% Load (Gasoline)
9.6
13.5
Safety & compliance
Overload Protection System
Low oil and overload protection
Not available
Low Oil ProtectionYesYes
Carbon Monoxide MonitoringNoYes
Included equipment
Mobility Components
Not available
Yes
Starting Components
Recoil, Electric
Not available
Included Accessories
Wheel kit
Tool kit and wheel kit
Warranty & identification
Part Number
Not available
EF55DZ1
Additional specs
Summary
The Powerhorse 9000ES is a dual-fuel portable generator offering 9,000 surge watts and 7,250 rated watts, suitable for various applications including farm work, outdoor recreation, and home backup power.
The Yamaha EF5500D is a 5500-watt generator designed for emergency backup, recreational use, and DIY projects. It features a 358cc OHV engine, dual voltage output, and offers up to 9 hours of continuous operation at rated load.
  • Most Powerful
    Powerhorse 9000ES
    7250W running
  • Quietest
    Yamaha EF5500D
    74.1 dB
  • Longest Runtime
    Yamaha EF5500D
    13.5h at 50% load
Where to buy
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Powerhorse 9000ES
Store links
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Yamaha EF5500D
Store links
No links yet.
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