Skip to content

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 GXS5000D
  • Sportsman GEN4000DF
  • Model GXS5000D
    Model GXS5000D

    A-iPower 4,000W Dual-Fuel Generator

    4000W
    Running
    68 dB
    Noise
    View details
  • Model GEN4000DF
    Model GEN4000DF

    Sportsman 3,500W Dual-Fuel 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 GXS5000DSportsman GEN4000DF
General
Product type
Generator
Generator
Fuel
Dual-Fuel
Dual-Fuel
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
114.6 lbs
Winner: Winner: 90 lbs
Run time @50% load
Not available
Winner: Winner: 10 h
Run time @25% load
20 h
Not available
Fuel tank
6.3 gal
3.6 gal
Fuel gaugeYesNo
Approx. dimensions (L × W × H)
24 x 23.6 x 24
24.5 x 17 x 16.5
Electrical
Voltage (AC)
120/240
120
Voltage (DC)
Not available
12
GFCI outletsNoNo
Covered outletsYesNo
Automatic Voltage RegulationYesYes
THD
Not available
Not available
Engine
Engine
223 cc OHV 4-stroke, cast iron sleeve
212 cc OHV 4-stroke
Alternator
Not available
Not available
Starting system
Recoil
Recoil
Warranty
Warranty
3 years
1 years
Power by fuel
GasolineNot availableNot available
Running watts
4000 W
3500 W
Starting watts
5000 W
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
20 h
Not available
PropaneNot availableNot available
Running watts
3600 W
3100 W
Starting watts
4500 W
3600 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
12 h
Run time @25% load
11 h
Not available
Other
Data center
Digital Data Center
Not available
Indicators
true
false
Compliance
CARB, EPA, ANSI/PGMA G300-2023
EPA
Security
Not available
Not available
Spark arrestorYesYes
Neutral
Floating
Not available
UPC
850016881311
27077801323
Core / High-priority specs
Running Watts (Gasoline)
4000
3500
Running Watts (Propane)
3600
3100
Starting Watts (Gasoline)
5000
4000
Starting Watts (Propane)
4500
3600
Rated Watts (Gasoline)
4000
Not available
Rated Watts (Propane)
3600
Not available
Peak Watts (Gasoline)
5000
Not available
Peak Watts (Propane)
4500
Not available
Runtime @ 50% Load (Gasoline)
Not available
10
Runtime @ 50% Load (Propane)
Not available
12
Runtime @ 25% Load (Gasoline)
20
Not available
Runtime @ 25% Load (Propane)
11
Not available
AC Outlet Types
2x Duplex 120V 20A (5-20R); 1x 120V 30A (L5-30R); 1x 120/240V 30A (L14-30R)
2x Duplex 120V 20A (5-20R); 1x 120V 30A (TT-30R)
Electrical & power
Frequency
60
60
Engine & construction
Engine Type
OHV 4-stroke, cast iron sleeve
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 @ 25% Load (Gasoline)
20
Not available
Runtime @ 50% Load (Gasoline)
Not available
10
Runtime @ 50% Load (Propane)
Not available
12
Safety & compliance
Overload Protection System
Low oil and overload protection
Low oil and overload protection
Low Oil ProtectionYesYes
Carbon Monoxide MonitoringYesNo
Included equipment
Mobility Components
Folding handle and wheels
Not available
Included Accessories
Oil, funnel, tool kit, propane hose, RV adapter, and wheel kit
Funnel, tool kit, propane hose, and battery charging cables
Warranty & identification
Commercial Warranty
3
Not available
Additional specs
Summary
The A-iPower GXS5000D is a 4,000-watt dual-fuel portable generator built around a 223cc OHV 4-stroke engine with cast iron sleeves. On gasoline, it delivers 5,000 starting watts and 4,000 running watts. On propane, output drops to 4,500 starting watts and 3,600 running watts. This power level handles mid-range job site demands: circular saws, air compressors, multiple power tools running simultaneously, or a household refrigerator plus several circuits during an outage. The dual-fuel design means users can switch between gasoline and propane based on availability, storage preference, or runtime needs. Compliance with CARB and EPA standards confirms emissions control without sacrificing performance. The 6.3-gallon fuel tank stretches runtime significantly at light loads. On gasoline at 25 percent load, users get 20 hours of operation before refueling. This extended runtime makes the GXS5000D practical for all-day job sites or overnight emergency backup without constant attention. Propane runtime at the same load reaches 11 hours, a meaningful difference for users who prioritize fuel storage or longer shelf life.
The Sportsman GEN4000DF is a dual fuel generator capable of producing 4,000 surge watts and 3,500 running watts, suitable for powering RVs, household appliances, and power tools.
  • Most Powerful
    A-iPower GXS5000D
    4000W running
  • Quietest
    A-iPower GXS5000D
    68 dB
  • Longest Runtime
    Sportsman GEN4000DF
    10h at 50% load
Where to buy
Prices can change. We update these automatically.
A-iPower GXS5000D
Store links
No links yet.
Sportsman GEN4000DF
Store links
No links yet.
Disclosure: Some links may be affiliate links. Specs and comparisons are never hidden.