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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 GXS5000RD
  • Pulsar PG4000BiSRCO
  • Model GXS5000RD
    Model GXS5000RD

    A-iPower 4,000W Dual-Fuel Generator

    4000W
    Running
    68 dB
    Noise
    View details
  • Model PG4000BiSRCO
    Model PG4000BiSRCO

    Pulsar 3,200W Dual-Fuel Generator

    3200W
    Running
    65 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 GXS5000RDPulsar PG4000BiSRCO
General
Product type
Generator
Generator
Fuel
Dual-Fuel
Dual-Fuel
InverterNoYes
Parallel capableNoYes
RV readyNoYes
Running watts
Winner: Winner: 4000 W
3200 W
Starting watts
Winner: Winner: 5000 W
4000 W
Noise (lower limit)
68 dB
Winner: Winner: 65 dB
Weight
124 lbs
Winner: Winner: 54 lbs
Run time @50% load
Not available—
Winner: Winner: 6 h
Run time @25% load
20 h
Not available—
Fuel tank
6.3 gal
1.6 gal
Fuel gaugeYesNo
Approx. dimensions (L × W × H)
24 x 23.6 x 24
21 x 11 x 19.5
Electrical
Voltage (AC)
120/240
120
Voltage (DC)
Not available—
12
GFCI outletsNoNo
Covered outletsYesYes
Automatic Voltage RegulationYesYes
THD
Not available—
≤3% %
Engine
Engine
223 cc OHV 4-stroke, cast iron sleeve
141 cc OHV 4-stroke.
Alternator
Not available—
Not available—
Starting system
Recoil, Electric, Remote
Recoil, Electric, Remote
Warranty
Warranty
3 years
3 years
Power by fuel
GasolineNot available—Not available—
Running watts
4000 W
3200 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—
6 h
Run time @25% load
20 h
Not available—
PropaneNot available—Not available—
Running watts
3600 W
2800 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—
13.2 h
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
EPA, ANSI/PGMA G300-2023
Security
Not available—
Not available—
Spark arrestorYesYes
Neutral
Floating
Floating.
UPC
850016881328
814726028138
Core / High-priority specs
Running Watts (Gasoline)
4000
3200
Running Watts (Propane)
3600
2800
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—
6
Runtime @ 50% Load (Propane)
Not available—
13.2
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)
1x Duplex 120V 20A (5-20R); 1x 120V 30A (TT-30R)
Electrical & power
Frequency
60
60
Engine & construction
Engine Type
223 cc OHV 4-stroke
OHV 4-stroke.
Engine Displacement
223
141
Cylinder Sleeve
cast iron sleeve
Not available—
Engine Oil Type
10W-30
10W-30
Runtime & fuel system
Runtime @ 25% Load (Gasoline)
20
Not available—
Runtime @ 50% Load (Gasoline)
Not available—
6
Runtime @ 50% Load (Propane)
Not available—
13.2
Controls & display
Display Type
Digital Data Center
Not available—
Safety & compliance
Overload Protection System
Low oil and overload protection, CO monitoring
Low oil and overload protection, CO monitoring
Low Oil ProtectionYesYes
Carbon Monoxide MonitoringYesYes
Included equipment
Mobility Components
Wheels and folding handle
Not available—
Starting Components
Battery and fob included
Recoil, Electric, Remote
Included Accessories
Oil, funnel, tool kit, key fob, propane hose, RV adapter, battery, and wheel kit
Oil, tool kit, key fob, propane hose, and battery
Warranty & identification
Residential Warranty
3
Not available—
Commercial Warranty
3
3
Part Number
GXS5000RD
Not available—
Additional specs
Summary
The A-iPower GXS5000RD is a 4,000-watt dual-fuel generator built around a 223cc OHV engine that runs on either gasoline or propane. On gasoline, it delivers 5,000 starting watts and 4,000 running watts. On propane, output drops to 4,500 starting and 3,600 running watts. This power level handles most household circuits, power tools, and mid-range job site equipment simultaneously. The dual-fuel design means users can switch between fuels based on availability, cost, or storage preference. A 6.3-gallon tank paired with 20-hour runtime at 25% load reduces refueling frequency during light-duty work. The 68 dBA noise level sits between a normal conversation and a vacuum cleaner, making it acceptable for residential neighborhoods with reasonable distance from neighbors.
The Pulsar PG4000BiSRCO is a versatile dual fuel inverter generator designed for both gasoline and propane use, delivering up to 4000 peak watts and 3200 running watts. It features remote and electric start options, is RV-ready, and includes CO Sentry technology for safety.
  • Most Powerful
    A-iPower GXS5000RD
    4000W running
  • Quietest
    Pulsar PG4000BiSRCO
    65 dB
  • Longest Runtime
    Pulsar PG4000BiSRCO
    6h at 50% load
Where to buy
Prices can change. We update these automatically.
A-iPower GXS5000RD
Store links
No links yet.
Pulsar PG4000BiSRCO
Store links
No links yet.
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