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

  • A-iPower GXS5000D
  • Energizer eZV3500P
  • Model GXS5000D
    Model GXS5000D

    A-iPower 4,000W Dual-Fuel Generator

    4000W
    Running
    68 dB
    Noise
    View details
  • Model eZV3500P
    Model eZV3500P

    Energizer 3,000W Gas Generator

    3000W
    Running
    57 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 @25%
h
Running watts by fuel
Shows how output changes across gasoline/propane/natural gas (when available).
Generator Specifications Comparison
SpecificationA-iPower GXS5000DEnergizer eZV3500P
General
Product type
Generator
Generator
Fuel
Dual-Fuel
Gasoline
InverterNoYes
Parallel capableNoYes
RV readyNoNo
Running watts
Winner: Winner: 4000 W
3000 W
Starting watts
Winner: Winner: 5000 W
3500 W
Noise (lower limit)
68 dB
Winner: Winner: 57 dB
Weight
114.6 lbs
Winner: Winner: 96 lbs
Run time @50% load
Not available
Not available
Run time @25% load
Winner: Winner: 20 h
15.5 h
Fuel tank
6.3 gal
1.95 gal
Fuel gaugeYesYes
Approx. dimensions (L × W × H)
24 x 23.6 x 24
22.8 x 16.7 x 17.5
Electrical
Voltage (AC)
120/240
120
Voltage (DC)
Not available
12
GFCI outletsNoNo
Covered outletsYesYes
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, Electric, Remote
Warranty
Warranty
3 years
3 years
Power by fuel
GasolineNot availableNot available
Running watts
4000 W
3000 W
Starting watts
5000 W
3500 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
20 h
15.5 h
PropaneNot availableNot available
Running watts
3600 W
Not available
Starting watts
4500 W
Not available
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
Not available
Other
Data center
Digital Data Center
Not available
Indicators
true
true
Compliance
CARB, EPA, ANSI/PGMA G300-2023
CARB, EPA
Security
Not available
Not available
Spark arrestorYesYes
Neutral
Floating
Floating
UPC
850016881311
Not available
Core / High-priority specs
Running Watts (Gasoline)
4000
3000
Running Watts (Propane)
3600
Not available
Starting Watts (Gasoline)
5000
3500
Starting Watts (Propane)
4500
Not available
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 @ 25% Load (Gasoline)
20
15.5
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)
1x Duplex 120V 20A (5-20R) 1x 120V 30A (L5-30R)
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
Runtime & fuel system
Runtime @ 25% Load (Gasoline)
20
15.5
Safety & compliance
Overload Protection System
Low oil and overload protection
Low oil and overload protection
Low Oil ProtectionYesNo
Carbon Monoxide MonitoringYesNo
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
Funnel, tool kit, key fob, battery charging cables, and battery
Warranty & identification
Commercial Warranty
3
3
Part Number
Not available
INVEZV3500PD
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 Energizer eZV3500P is a 3,000-watt inverter generator built for users who need portable power without sacrificing convenience. At 3,000 running watts, this unit can power a refrigerator, microwave, and several power tools simultaneously. The 3,500-watt peak capacity handles the startup surge of air conditioning units and compressors. Gasoline fuel means no special storage concerns and easy refueling at any gas station. The eZV3500P targets outdoor enthusiasts and homeowners who value flexibility in how they start the generator. Three starting options—recoil, electric, and remote—mean you can start it by hand, press a button on the unit, or trigger it from 100 feet away with the included key fob. The inverter technology protects laptops, phones, and other sensitive electronics from voltage spikes. A 3-year warranty covers defects across the generator's core components.
  • Most Powerful
    A-iPower GXS5000D
    4000W running
  • Quietest
    Energizer eZV3500P
    57 dB
  • Longest Runtime
    h at 50% load
Where to buy
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A-iPower GXS5000D
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Energizer eZV3500P
Store links
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