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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.

  • NorthStar e14000s
  • Cat RP12000 E
  • Model e14000s
    Model e14000s

    NorthStar 12,000W Gas Generator

    12000W
    Running
    73 dB
    Noise
    View details
  • Model RP12000 E
    Model RP12000 E

    Cat 12,000W Gas Generator

    12000W
    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
SpecificationNorthStar e14000sCat RP12000 E
General
Product type
Generator
Generator
Fuel
Gasoline
Gasoline
InverterNoNo
Parallel capableNoNo
RV readyNoYes
Running watts
Winner: Winner: 12000 W
Winner: Winner: 12000 W
Starting watts
14000 W
Winner: Winner: 15000 W
Noise (lower limit)
Winner: Winner: 73 dB
0 dB
Weight
388 lbs
Winner: Winner: 350 lbs
Run time @50% load
10 h
Winner: Winner: 11.7 h
Run time @25% load
Not available—
Not available—
Fuel tank
12 gal
13.2 gal
Fuel gaugeYesYes
Approx. dimensions (L × W × H)
43 x 36 x 35
35.7 x 32.7 x 35.8
Electrical
Voltage (AC)
120/240 60 Hz
120/240
Voltage (DC)
Not available—
12
GFCI outletsYesYes
Covered outletsYesYes
Automatic Voltage RegulationYesYes
THD
<5% %
5 %
Engine
Engine
NorthStar e670 OHV 4-stroke
670 cc Rato OHV V-Twin
Alternator
Not available—
Not available—
Starting system
Electric
Electric
Warranty
Warranty
4 years
2 years
Power by fuel
GasolineNot available—Not available—
Running watts
12000 W
12000 W
Starting watts
14000 W
15000 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
11.7 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
true
true
UPC
840321737434
815683023891
Core / High-priority specs
Running Watts (Gasoline)
12000
12000
Starting Watts (Gasoline)
14000
15000
Runtime @ 50% Load (Gasoline)
10
11.7
AC Outlet Types
3x Duplex 120V 20A (5-20R); 1x 120V 30A (L5-30R); 1x 120/240V 30A (L14-30R); 1x 120/240V 50A (14-50R)
2x Duplex 120V 20A (5-20R) GFCI; 2x 120V 30A (L5-30R); 1x 120/240V 30A (L14-30R); 1x 120/240V 50A (14-50R)
Electrical & power
Frequency
60
60
Engine & construction
Engine Type
OHV 4-stroke
670 cc Rato OHV V-Twin
Engine Displacement
669
670
Runtime & fuel system
Runtime @ 50% Load (Gasoline)
10
11.7
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—
Battery, Battery Charger, Wheel Kit
Included Accessories
Funnel, battery, and wheel kit
Oil, funnel, tool kit, battery charger, battery, and wheel kit
Warranty & identification
Commercial Warranty
4
Not available—
Part Number
Not available—
502-3700
Additional specs
Summary
The NorthStar e14000s is a commercial-grade EFI portable generator with electric start, delivering 14,000 surge watts and 12,000 rated watts. It features a NorthStar e670 OHV EFI engine, Quiet Armor Technology for reduced noise, and a heavy-duty steel exoskeleton for durability.
The Cat RP12000 E is a 12,000-watt gasoline generator built for job sites, construction crews, and homeowners who need sustained power for multiple heavy tools or appliances simultaneously. The 15,000-watt peak output handles startup surges from air compressors, circular saws, and welders without stalling. At 350 pounds, this is a stationary or semi-portable unit. It ships with a wheel kit, battery charger, and full tool set, meaning users can operate it immediately without additional purchases.
  • Most Powerful
    NorthStar e14000s
    12000W running
  • Quietest
    NorthStar e14000s
    73 dB
  • Longest Runtime
    Cat RP12000 E
    11.7h at 50% load
Where to buy
Prices can change. We update these automatically.
NorthStar e14000s
Store links
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Cat RP12000 E
Store links
No links yet.
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