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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.

  • A-iPower AP5000
  • Sportsman GEN4000-SS
  • Model AP5000
    Model AP5000

    A-iPower 4,000W Gas Generator

    4000W
    Running
    68 dB
    Noise
    View details
  • Model GEN4000-SS
    Model GEN4000-SS

    Sportsman 3,500W Gas Generator

    3500W
    Running
    69 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
SpecificationA-iPower AP5000Sportsman GEN4000-SS
General
Product type
Generator
Generator
Fuel
Gasoline
Gasoline
InverterNoNo
Parallel capableNoNo
RV readyNoYes
Running watts
Winner: Winner: 4000 W
3500 W
Starting watts
Winner: Winner: 5000 W
4000 W
Noise (lower limit)
Winner: Winner: 68 dB
69 dB
Weight
Not available
Winner: Winner: 91 lbs
Run time @50% load
Not available
Winner: Winner: 10 h
Run time @25% load
13.5 h
Not available
Fuel tank
4 gal
3.9 gal
Fuel gaugeNoNo
Approx. dimensions (L × W × H)
23.4 x 18.3 x 19.9 inch
23 x 19.5 x 17.5
Electrical
Voltage (AC)
120/240V
120
Voltage (DC)
Not available
12
GFCI outletsNoNo
Covered outletsNoNo
Automatic Voltage RegulationNoYes
THD
Not available
Not available
Engine
Engine
223cc OHV 4 stroke engine
212 cc OHV 4-stroke
Alternator
Not available
Not available
Starting system
Recoil Start
Recoil
Warranty
Warranty
Not available
1 years
Power by fuel
GasolineNot availableNot available
Running watts
Not available
3500 W
Starting watts
Not available
4000 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
10 h
Run time @25% load
Not available
Not available
Other
Data center
Not available
Not available
Indicators
Not available
false
Compliance
Not available
EPA
Security
Not available
Not available
Spark arrestorNoYes
Neutral
Not available
Not available
UPC
851217006077
27077082470
Core / High-priority specs
Running Watts (Gasoline)
Not available
3500
Starting Watts (Gasoline)
Not available
4000
Runtime @ 50% Load (Gasoline)
Not available
10
AC Outlet Types
20A – 120V household duplex (5-20R) and 30A-120/240 Twistlock (L14-30R)
2x Duplex 120V 20A (5-20R)1x 120V 30A (TT-30R)
Electrical & power
Frequency
60
60
Engine & construction
Engine Type
Single Cylinder 223cc - 4 Stroke OHV
OHV 4-stroke
Engine Displacement
223
212
Cylinder Sleeve
Cast Iron Sleeve
Not available
Engine Oil Type
Not available
SAE10W-30
Runtime & fuel system
Runtime @ 50% Load (Gasoline)
Not available
10
Controls & display
Display Type
Digital Hour Meter
Not available
Safety & compliance
Overload Protection System
Not available
Low oil and overload protection
Low Oil ProtectionYesYes
Included equipment
Mobility Components
folding handle and wheels
Not available
Starting Components
Not available
Recoil
Included Accessories
Tool Kit
Funnel, tool kit, and battery charging cables
Warranty & identification
Residential Warranty
2
Not available
Part Number
AP5000
Not available
Additional specs
Summary
The A-iPower AP5000 is a 4000-watt running generator built around a 223cc OHV gasoline engine. It delivers 5000 peak watts at startup, making it capable of powering multiple household appliances simultaneously during outages or outdoor work. The 4-gallon fuel tank stretches to 13.5 hours of runtime at 25% load, which means light-duty applications like charging devices, running fans, or powering small tools can operate through an entire night on a single tank. At full load, refueling becomes more frequent, but the dual 120V and 120/240V outlets give users flexibility to run both standard household devices and heavier equipment like air compressors or welders. This unit targets homeowners, campers, and job site workers who prioritize straightforward functionality over advanced features. The recoil start system and basic digital hour meter reflect a no-frills design philosophy. The 68 dBA noise level sits at the edge of acceptable for residential areas, meaning placement matters. Neighbors within 50 feet will notice it running.
The Sportsman GEN4000-SS is a gasoline-powered generator offering 4000 surge watts and 3500 running watts, suitable for running RVs, household appliances, and power tools.
  • Most Powerful
    A-iPower AP5000
    4000W running
  • Quietest
    A-iPower AP5000
    68 dB
  • Longest Runtime
    Sportsman GEN4000-SS
    10h at 50% load
Where to buy
Prices can change. We update these automatically.
A-iPower AP5000
Store links
No links yet.
Sportsman GEN4000-SS
Store links
No links yet.
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