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

  • Sportsman GEN4000-SS
  • Cat RP3600
  • Model GEN4000-SS
    Model GEN4000-SS

    Sportsman 3,500W Gas Generator

    3500W
    Running
    69 dB
    Noise
    View details
  • Model RP3600
    Model RP3600

    Cat 3,600W Gas Generator

    3600W
    Running
    0 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
SpecificationSportsman GEN4000-SSCat RP3600
General
Product type
Generator
Generator
Fuel
Gasoline
Gasoline
InverterNoNo
Parallel capableNoNo
RV readyYesYes
Running watts
3500 W
Winner: Winner: 3600 W
Starting watts
4000 W
Winner: Winner: 4500 W
Noise (lower limit)
Winner: Winner: 69 dB
0 dB
Weight
Winner: Winner: 91 lbs
125 lbs
Run time @50% load
10 h
Winner: Winner: 13.5 h
Run time @25% load
Not available
Not available
Fuel tank
3.9 gal
4.5 gal
Fuel gaugeNoYes
Approx. dimensions (L × W × H)
23 x 19.5 x 17.5
28.4 x 25.2 x 23
Electrical
Voltage (AC)
120
120V 60 Hz
Voltage (DC)
12
Not available
GFCI outletsNoNo
Covered outletsNoYes
Automatic Voltage RegulationYesYes
THD
Not available
Not available
Engine
Engine
212 cc OHV 4-stroke
212 cc OHV 4-stroke
Alternator
Not available
Not available
Starting system
Recoil
Recoil
Warranty
Warranty
1 years
2 years
Power by fuel
GasolineNot availableNot available
Running watts
3500 W
3600 W
Starting watts
4000 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
10 h
13.5 h
Run time @25% load
Not available
Not available
Other
Data center
Not available
Not available
Indicators
false
false
Compliance
EPA
CARB, EPA
Security
Not available
Not available
Spark arrestorYesYes
Neutral
Not available
true
UPC
27077082470
815683020005
Core / High-priority specs
Running Watts (Gasoline)
3500
3600
Starting Watts (Gasoline)
4000
4500
Runtime @ 50% Load (Gasoline)
10
13.5
AC Outlet Types
2x Duplex 120V 20A (5-20R)1x 120V 30A (TT-30R)
2x 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
212
212
Engine Oil Type
SAE10W-30
SAE 30 or 10W-30
Runtime & fuel system
Runtime @ 50% Load (Gasoline)
10
13.5
Safety & compliance
Overload Protection System
Low oil and overload protection
Low oil and overload protection
Low Oil ProtectionYesYes
Included equipment
Starting Components
Recoil
Oil, funnel, tool kit, and wheel kit
Included Accessories
Funnel, tool kit, and battery charging cables
Oil, funnel, tool kit, and wheel kit
Warranty & identification
Part Number
Not available
502-3684
Additional specs
Summary
The Sportsman GEN4000-SS is a gasoline-powered generator offering 4000 surge watts and 3500 running watts, suitable for running RVs, household appliances, and power tools.
The Cat RP3600 is a 3600-watt gasoline generator built for job sites and RV camping. Its 4500-watt peak output handles startup surges for power tools and air conditioners, while the 3600-watt running capacity sustains multiple household circuits or a single large appliance continuously.
  • Most Powerful
    Cat RP3600
    3600W running
  • Quietest
    Sportsman GEN4000-SS
    69 dB
  • Longest Runtime
    Cat RP3600
    13.5h at 50% load
Where to buy
Prices can change. We update these automatically.
Sportsman GEN4000-SS
Store links
No links yet.
Cat RP3600
Store links
No links yet.
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