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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.

  • Firman P03613
  • Cat RP3600
  • Model P03613
    Model P03613

    Firman 3,650W Gas Generator

    3650W
    Running
    67 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
SpecificationFirman P03613Cat RP3600
General
Product type
Generator
Generator
Fuel
Gasoline
Gasoline
InverterNoNo
Parallel capableNoNo
RV readyYesYes
Running watts
Winner: Winner: 3650 W
3600 W
Starting watts
Winner: Winner: 4550 W
4500 W
Noise (lower limit)
Winner: Winner: 67 dB
0 dB
Weight
Winner: Winner: 108.5 lbs
125 lbs
Run time @50% load
Winner: Winner: 14 h
13.5 h
Run time @25% load
Not available
Not available
Fuel tank
5 gal
4.5 gal
Fuel gaugeYesYes
Approx. dimensions (L × W × H)
24.8 x 21.7 x 21.7
28.4 x 25.2 x 23
Electrical
Voltage (AC)
120
120V 60 Hz
Voltage (DC)
Not available
Not available
GFCI outletsNoNo
Covered outletsYesYes
Automatic Voltage RegulationYesYes
THD
25 %
Not available
Engine
Engine
208 Firman Max-Pro Series OHV 4-stroke, cast iron sleeve
212 cc OHV 4-stroke
Alternator
Not available
Not available
Starting system
Recoil
Recoil
Warranty
Warranty
3 years
2 years
Power by fuel
GasolineNot availableNot available
Running watts
3650 W
3600 W
Starting watts
4550 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
14 h
13.5 h
Run time @25% load
Not available
Not available
Other
Data center
Not available
Not available
Indicators
true
false
Compliance
CARB, EPA, ANSI/PGMA G300-2023
CARB, EPA
Security
Not available
Not available
Spark arrestorYesYes
Neutral
Floating
true
UPC
840876136133
815683020005
Core / High-priority specs
Running Watts (Gasoline)
3650
3600
Starting Watts (Gasoline)
4550
4500
Runtime @ 50% Load (Gasoline)
14
13.5
AC Outlet Types
1x Duplex 120V 20 (5-20R); 1x 120V 30 (L5-30R); 1x 120V 30 (TT-30R)
2x Duplex 120V 20A (5-20R) 1x 120V 30A (TT-30R)
Electrical & power
Frequency
60
60
Engine & construction
Engine Type
Firman Max-Pro Series OHV 4-stroke
OHV 4-stroke
Engine Displacement
208
212
Cylinder Sleeve
Cast iron sleeve
Not available
Engine Oil Type
Not available
SAE 30 or 10W-30
Runtime & fuel system
Runtime @ 50% Load (Gasoline)
14
13.5
Safety & compliance
Overload Protection System
Low oil and overload protection
Low oil and overload protection
Low Oil ProtectionYesYes
Carbon Monoxide MonitoringYesNo
Included equipment
Starting Components
Not available
Oil, funnel, tool kit, and wheel kit
Included Accessories
Oil, funnel, tool kit, and wheel kit
Oil, funnel, tool kit, and wheel kit
Warranty & identification
Commercial Warranty
3
Not available
Part Number
Not available
502-3684
Additional specs
Summary
The Firman P03613 delivers 3650 running watts from a 208cc gasoline engine, making it capable of powering multiple household appliances simultaneously or running job site tools continuously. At this wattage level, users can operate a refrigerator, microwave, and several power tools at once, or run an RV's air conditioning and appliances during camping trips. The 4550 peak watts handle the startup surge of compressors and motors. Because the unit runs on gasoline, fuel is readily available at any gas station, and the 5-gallon tank stretches runtime to 14 hours at half load, meaning users can power a job site or campsite through a full workday without refueling. The 67 decibel noise level sits between a vacuum cleaner and normal conversation, allowing operation in residential neighborhoods without excessive disruption. Inclusion of a wheel kit and 108.5 pound weight means this generator requires some effort to move but remains transportable for most users.
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
    Firman P03613
    3650W running
  • Quietest
    Firman P03613
    67 dB
  • Longest Runtime
    Firman P03613
    14h at 50% load
Where to buy
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Firman P03613
Store links
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Cat RP3600
Store links
No links yet.
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