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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 2500i
  • Yamaha EF3000iS
  • Model 2500i
    Model 2500i

    Powerhorse 1,800W Gas Generator

    1800W
    Running
    62 dB
    Noise
    View details
  • Model EF3000iS
    Model EF3000iS

    Yamaha 2,800W Gas Generator

    2800W
    Running
    54.5 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 2500iYamaha EF3000iS
General
Product type
Generator
Generator
Fuel
Gasoline
Gasoline
InverterYesYes
Parallel capableYesNo
RV readyNoNo
Running watts
1800 W
Winner: Winner: 2800 W
Starting watts
2500 W
Winner: Winner: 3000 W
Noise (lower limit)
62 dB
Winner: Winner: 54.5 dB
Weight
Winner: Winner: 48.3 lbs
136 lbs
Run time @50% load
Winner: Winner: 9.5 h
Not available
Run time @25% load
10.5 h
18.6 h
Fuel tank
1.2 gal
3.4 gal
Fuel gaugeNoYes
Approx. dimensions (L × W × H)
20.4 x 12.5 x 18.3
26.8 x 17.5 x 21.9
Electrical
Voltage (AC)
120
120
Voltage (DC)
Not available
Not available
GFCI outletsNoNo
Covered outletsYesNo
Automatic Voltage RegulationYesYes
THD
3 %
Not available
Engine
Engine
80 cc OHV 4-stroke
171 cc Yamaha MZ175 OHV 4-stroke
Alternator
Not available
Not available
Starting system
Recoil
Recoil
Warranty
Warranty
2 years
3 years
Power by fuel
GasolineNot availableNot available
Running watts
Not available
2800 W
Starting watts
2500 W
3000 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
Not available
Run time @25% load
10.5 h
18.6 h
Other
Data center
Not available
Not available
Indicators
true
true
Compliance
EPA, ANSI/PGMA G300-2023
CARB, EPA
Security
Not available
Not available
Spark arrestorYesYes
Neutral
Floating
Floating
UPC
840321763969
810856030645
Core / High-priority specs
Running Watts (Gasoline)
Not available
2800
Starting Watts (Gasoline)
2500
3000
Runtime @ 50% Load (Gasoline)
9.5
Not available
Runtime @ 25% Load (Gasoline)
10.5
18.6
AC Outlet Types
1x Duplex 120V 20A (5-20R); 1x 120V 30A (L5-30R)
AC outlets1x Duplex 120V 20A (5-20R)1x 120V 30A (L5-30R)
Electrical & power
Frequency
60
60
Engine & construction
Engine Type
80 cc OHV 4-stroke
Yamaha MZ175 OHV 4-stroke
Engine Displacement
80
171
Runtime & fuel system
Runtime @ 25% Load (Gasoline)
10.5
18.6
Runtime @ 50% Load (Gasoline)
9.5
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
Included Accessories
Funnel and tool kit
Battery charging cables
Warranty & identification
Commercial Warranty
2
3
Additional specs
Summary
The Powerhorse 2500i is a portable inverter generator delivering 2,500 surge watts and 1,800 rated watts, featuring a quiet 52dB operation, CO shutdown function, and parallel-ready design for increased power needs.
The Yamaha EF3000iS is a 3000-watt inverter generator designed for quiet operation and portability, featuring advanced technologies like Smart Throttle and Noise Block, and backed by a 3-year limited warranty.
  • Most Powerful
    Yamaha EF3000iS
    2800W running
  • Quietest
    Yamaha EF3000iS
    54.5 dB
  • Longest Runtime
    Powerhorse 2500i
    9.5h at 50% load
Where to buy
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Powerhorse 2500i
Store links
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Yamaha EF3000iS
Store links
No links yet.
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