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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.

  • Briggs & Stratton 30758 P2400 PowerSmart
  • Firman T04073
  • Model 30758 P2400 PowerSmart
    Model 30758 P2400 PowerSmart

    Briggs & Stratton 1,800W Gas Generator

    1800W
    Running
    62 dB
    Noise
    View details
  • Model T04073
    Model T04073

    Firman 4,000W Tri-Fuel Generator

    4000W
    Running
    67 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
SpecificationBriggs & Stratton 30758 P2400 PowerSmartFirman T04073
General
Product type
Generator
Generator
Fuel
Gasoline
Tri-Fuel
InverterYesNo
Parallel capableYesNo
RV readyNoNo
Running watts
1800 W
Winner: Winner: 4000 W
Starting watts
2400 W
Winner: Winner: 5000 W
Noise (lower limit)
Winner: Winner: 62 dB
67 dB
Weight
Winner: Winner: 51 lbs
123.4 lbs
Run time @50% load
Not available—
Winner: Winner: 12 h
Run time @25% load
8 h
14 h
Fuel tank
1 gal
5 gal
Fuel gaugeNoYes
Approx. dimensions (L × W × H)
20 x 12 x 17
29.8 x 27.5 x 26.1
Electrical
Voltage (AC)
120
120/240
Voltage (DC)
5
Not available—
GFCI outletsNoYes
Covered outletsYesYes
Automatic Voltage RegulationNoYes
THD
< 3% %
11%-14% %
Engine
Engine
79 cc OHV 4-stroke
223 cc OHV 4-stroke, cast iron sleeve
Alternator
Not available—
Not available—
Starting system
Recoil
Recoil, Electric
Warranty
Warranty
3 years
3 years
Power by fuel
GasolineNot available—Not available—
Running watts
Not available—
4000 W
Starting watts
2400 W
5000 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—
14 h
Run time @25% load
8 h
Not available—
Natural gasNot available—Not available—
Running watts
Not available—
3200 W
Starting watts
Not available—
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—
Not available—
Run time @25% load
Not available—
Not available—
PropaneNot available—Not available—
Running watts
Not available—
3600 W
Starting watts
Not available—
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
Not available—
9 h
Run time @25% load
Not available—
Not available—
Other
Data center
Not available—
Not available—
Indicators
true
true
Compliance
CARB, EPA, ANSI/PGMA G300-2023
CARB, EPA, ANSI/PGMA G300-2023
Security
Not available—
Not available—
Spark arrestorYesYes
Neutral
Floating
true
UPC
11675307585
840876140734
Core / High-priority specs
Running Watts (Gasoline)
Not available—
4000
Running Watts (Propane)
Not available—
3600
Running Watts (Natural Gas)
Not available—
3200
Starting Watts (Gasoline)
2400
5000
Starting Watts (Propane)
Not available—
4500
Starting Watts (Natural Gas)
Not available—
4000
Runtime @ 50% Load (Gasoline)
Not available—
14
Runtime @ 50% Load (Propane)
Not available—
9
Runtime @ 25% Load (Gasoline)
8
Not available—
AC Outlet Types
1x Duplex 120V 20A (5-20R)
1x Duplex 120V 20A (5-20R) GFCI; 1x 120V 30A (L5-30R); 1x 120/240V 30A (L14-30R)
Electrical & power
Frequency
60
60
Engine & construction
Engine Type
OHV 4-stroke
223 cc OHV 4-stroke
Engine Displacement
79
223
Cylinder Sleeve
Not available—
cast iron
Runtime & fuel system
Runtime @ 25% Load (Gasoline)
8
Not available—
Runtime @ 50% Load (Gasoline)
Not available—
14
Runtime @ 50% Load (Propane)
Not available—
9
Safety & compliance
Overload Protection System
Low oil and overload protection
Low oil and overload protection, CO monitoring
Low Oil ProtectionYesYes
Carbon Monoxide MonitoringYesYes
Included equipment
Starting Components
Not available—
Recoil, Electric
Included Accessories
Oil
Oil, funnel, tool kit, propane hose, RV adapter, cover, battery, and wheel kit
Warranty & identification
Commercial Warranty
Not available—
3
Part Number
30758
Not available—
Additional specs
Summary
The Briggs & Stratton 30758 P2400 PowerSmart is an 1800-watt inverter generator built for users who need portable, clean power without the weight penalty. At 51 pounds, this unit sits at the intersection of serious capacity and genuine portability. It runs household essentials like refrigerators, power tools, and laptops simultaneously, but cannot power an entire home or heavy-duty job site equipment. The 79 cc OHV engine produces 2400 starting watts to handle motor inrush, then settles to 1800 running watts for sustained operation. This inverter's sub-3% THD output protects sensitive electronics from voltage spikes that damage laptops, phones, and medical devices. The gasoline fuel type means refueling at any gas station, and the 1-gallon tank with 8-hour runtime at 25% load creates a predictable refueling cycle for day-long use. Three-year warranty coverage backs the entire package, making this a low-risk entry point for homeowners, campers, and emergency preparedness planners.
The Firman T04073 is a 4,000-watt tri-fuel generator that runs on gasoline, propane, or natural gas. On gasoline, it delivers 5,000 starting watts and 4,000 running watts, enough to power a refrigerator, microwave, and multiple household circuits simultaneously. On propane, output drops to 3,600 running watts, and on natural gas it falls to 3,200 running watts. This fuel flexibility means users can switch between sources based on availability and cost, a significant advantage during extended outages or in remote locations where one fuel type may be scarce. The T04073 targets homeowners, RV owners, and job site operators who need reliable backup power without the commitment to a single fuel source. Its 5-gallon tank runs for 14 hours at 25% load on gasoline, translating to roughly one week of emergency backup if you run it a few hours per day. The unit includes a wheel kit, making it easier to position despite its 123.4-pound weight.
  • Most Powerful
    Firman T04073
    4000W running
  • Quietest
    Briggs & Stratton 30758 P2400 PowerSmart
    62 dB
  • Longest Runtime
    Firman T04073
    12h at 50% load
Where to buy
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Briggs & Stratton 30758 P2400 PowerSmart
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Firman T04073
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