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
  • Westinghouse iGen5000DFc
  • Model GXS5000D
    Model GXS5000D

    A-iPower 4,000W Dual-Fuel Generator

    4000W
    Running
    68 dB
    Noise
    View details
  • Model iGen5000DFc
    Model iGen5000DFc

    Westinghouse 3,900W Dual-Fuel Generator

    3900W
    Running
    52 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 GXS5000DWestinghouse iGen5000DFc
General
Product type
Generator
Generator
Fuel
Dual-Fuel
Dual-Fuel
InverterNoYes
Parallel capableNoYes
RV readyNoYes
Running watts
Winner: Winner: 4000 W
3900 W
Starting watts
Winner: Winner: 5000 W
Winner: Winner: 5000 W
Noise (lower limit)
68 dB
Winner: Winner: 52 dB
Weight
114.6 lbs
Winner: Winner: 105.8 lbs
Run time @50% load
Not available
Winner: Winner: 15 h
Run time @25% load
20 h
18 h
Fuel tank
6.3 gal
3.4 gal
Fuel gaugeYesYes
Approx. dimensions (L × W × H)
24 x 23.6 x 24
24.5 x 17.5 x 20
Electrical
Voltage (AC)
120/240
120
Voltage (DC)
Not available
5
GFCI outletsNoNo
Covered outletsYesYes
Automatic Voltage RegulationYesYes
THD
Not available
3 %
Engine
Engine
223 cc OHV 4-stroke, cast iron sleeve
224 cc OHV 4-stroke
Alternator
Not available
Not available
Starting system
Recoil
Recoil, Electric, Remote
Warranty
Warranty
3 years
3 years
Power by fuel
GasolineNot availableNot available
Running watts
4000 W
3900 W
Starting watts
5000 W
5000 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
15 h
Run time @25% load
20 h
18 h
PropaneNot availableNot available
Running watts
3600 W
3500 W
Starting watts
4500 W
4500 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
11 h
22 h
Other
Data center
Digital Data Center
Not available
Indicators
true
true
Compliance
CARB, EPA, ANSI/PGMA G300-2023
EPA, ANSI/PGMA G300-2023
Security
Not available
Not available
Spark arrestorYesYes
Neutral
Floating
Not available
UPC
850016881311
850011336854
Core / High-priority specs
Running Watts (Gasoline)
4000
3900
Running Watts (Propane)
3600
3500
Starting Watts (Gasoline)
5000
5000
Starting Watts (Propane)
4500
4500
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
15
Runtime @ 25% Load (Gasoline)
20
18
Runtime @ 25% Load (Propane)
11
22
AC Outlet Types
2x Duplex 120V 20A (5-20R); 1x 120V 30A (L5-30R); 1x 120/240V 30A (L14-30R)
1x 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
224
Cylinder Sleeve
cast iron sleeve
Not available
Engine Oil Type
Not available
SAE 10W-30
Runtime & fuel system
Runtime @ 25% Load (Gasoline)
20
18
Runtime @ 50% Load (Gasoline)
Not available
15
Safety & compliance
Overload Protection System
Low oil and overload protection
Low oil and overload protection
Low Oil ProtectionYesYes
Carbon Monoxide MonitoringYesYes
Included equipment
Mobility Components
Folding handle and wheels
Not available
Starting Components
Not available
Recoil, Electric, Remote
Included Accessories
Oil, funnel, tool kit, propane hose, RV adapter, and wheel kit
Oil, funnel, tool kit, key fob, battery charger, propane hose, and battery
Warranty & identification
Commercial Warranty
3
3
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 Westinghouse iGen5000DFc EFI Inverter Generator is a dual fuel generator that offers 5000 peak watts and 3900 rated watts on gasoline, and 4500 peak watts and 3500 rated watts on propane. It features electronic fuel injection for improved fuel efficiency and lower maintenance, remote start, an LED display, and up to 12 hours of run time at 25% load.
  • Most Powerful
    A-iPower GXS5000D
    4000W running
  • Quietest
    Westinghouse iGen5000DFc
    52 dB
  • Longest Runtime
    Westinghouse iGen5000DFc
    15h at 50% load
Where to buy
Prices can change. We update these automatically.
A-iPower GXS5000D
Store links
No links yet.
Westinghouse iGen5000DFc
Store links
No links yet.
Disclosure: Some links may be affiliate links. Specs and comparisons are never hidden.