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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.

  • DuroStar DS4000S
  • Pulsar PGD40iSCO
  • Model DS4000S
    Model DS4000S

    DuroStar 3,300W Gas Generator

    3300W
    Running
    69 dB
    Noise
    View details
  • Model PGD40iSCO
    Model PGD40iSCO

    Pulsar 3,200W Gas Generator

    3200W
    Running
    59 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
SpecificationDuroStar DS4000SPulsar PGD40iSCO
General
Product type
Generator
Generator
Fuel
Gasoline
Gasoline
InverterNoYes
Parallel capableNoYes
RV readyNoYes
Running watts
Winner: Winner: 3300 W
3200 W
Starting watts
Winner: Winner: 4000 W
Winner: Winner: 4000 W
Noise (lower limit)
69 dB
Winner: Winner: 59 dB
Weight
92 lbs
Winner: Winner: 46 lbs
Run time @50% load
Winner: Winner: 12 h
4.5 h
Run time @25% load
26 h
Not available
Fuel tank
4 gal
1 gal
Fuel gaugeYesNo
Approx. dimensions (L × W × H)
23 x 18 x 17.5
18.9 x 11.4 x 17.3
Electrical
Voltage (AC)
120
120
Voltage (DC)
Not available
Not available
GFCI outletsNoNo
Covered outletsNoYes
Automatic Voltage RegulationYesYes
THD
Not available
Not available
Engine
Engine
DuroStar OHV 4-stroke
145 cc Ducar OHV 4-stroke
Alternator
Not available
Not available
Starting system
Recoil
Recoil
Warranty
Warranty
3 years
3 years
Power by fuel
GasolineNot availableNot available
Running watts
3300 W
3200 W
Starting watts
4000 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
12 h
4.5 h
Run time @25% load
26 h
Not available
Other
Data center
Not available
Not available
Indicators
true
true
Compliance
CARB, EPA
CARB, EPA
Security
Not available
Not available
Spark arrestorYesYes
Neutral
Floating
Floating
UPC
811640011840
814726027674
Core / High-priority specs
Running Watts (Gasoline)
3300
3200
Starting Watts (Gasoline)
4000
4000
Runtime @ 50% Load (Gasoline)
12
4.5
Runtime @ 25% Load (Gasoline)
26
Not available
AC Outlet Types
1x Duplex 120V 20A (5-20R); 1x 120V 30A (L5-30R)
1x Duplex 120V 20A (5-20R)1x 120V 30A (TT-30R)
Electrical & power
Frequency
60
60
Engine & construction
Engine Type
OHV 4-stroke
OHV 4-stroke
Engine Displacement
208
145
Engine Oil Type
10W-30
10W-30
Runtime & fuel system
Runtime @ 25% Load (Gasoline)
26
Not available
Runtime @ 50% Load (Gasoline)
12
4.5
Safety & compliance
Overload Protection System
Low oil and overload protection
Low oil and overload protection
Low Oil ProtectionYesYes
Carbon Monoxide MonitoringNoYes
Included equipment
Included Accessories
Funnel and tool kit
Not available
Warranty & identification
Commercial Warranty
Not available
3
Additional specs
Summary
The DuroStar DS4000S is a 3,300-watt gasoline generator built around a DuroStar OHV 4-stroke engine that delivers 4,000 peak watts for startup surges. This wattage range powers essential household appliances, power tools, and small job site equipment simultaneously. A single person can operate it because the recoil starting system requires only manual pull-cord engagement, though the 92-pound weight means transport over distance demands planning. The 4-gallon fuel tank runs 26 hours at 25 percent load or 12 hours at 50 percent load, making it suitable for extended outages or multi-day outdoor use without constant refueling. EPA and CARB compliance clears this unit for all 50 states.
The Pulsar PGD40iSCO is a 4,000-watt inverter generator featuring a 145cc OHV air-cooled engine, providing 3,200 running watts and 4,000 peak watts. It operates quietly at 59 dB and offers up to 4.5 hours of runtime at half load. Equipped with CO Sentry for carbon monoxide detection, it ensures safety during operation.
  • Most Powerful
    DuroStar DS4000S
    3300W running
  • Quietest
    Pulsar PGD40iSCO
    59 dB
  • Longest Runtime
    DuroStar DS4000S
    12h at 50% load
Where to buy
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DuroStar DS4000S
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Pulsar PGD40iSCO
Store links
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