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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 30814 P4500 PowerSmart
  • DuroMax XP9500iHT
  • Model 30814 P4500 PowerSmart
    Model 30814 P4500 PowerSmart

    Briggs & Stratton 3,700W Gas Generator

    3700W
    Running
    60 dB
    Noise
    View details
  • Model XP9500iHT
    Model XP9500iHT

    DuroMax 7,500W Tri-Fuel Generator

    7500W
    Running
    61 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 30814 P4500 PowerSmartDuroMax XP9500iHT
General
Product type
Generator
Generator
Fuel
Gasoline
Tri-Fuel
InverterYesYes
Parallel capableNoYes
RV readyNoYes
Running watts
3700 W
Winner: Winner: 7500 W
Starting watts
4500 W
Winner: Winner: 9500 W
Noise (lower limit)
Winner: Winner: 60 dB
61 dB
Weight
Winner: Winner: 104 lbs
216 lbs
Run time @50% load
Not available—
Winner: Winner: 11 h
Run time @25% load
16 h
21 h
Fuel tank
3.5 gal
7.1 gal
Fuel gaugeYesYes
Approx. dimensions (L × W × H)
24.5 x 17.6 x 20.36
26.2 x 25 x 29.6
Electrical
Voltage (AC)
120
120/240
Voltage (DC)
5
Not available—
GFCI outletsNoYes
Covered outletsYesYes
Automatic Voltage RegulationYesYes
THD
3 %
<3% %
Engine
Engine
Briggs & Stratton OHV 4-stroke 224 cc
459 cc OHV 4-stroke, cast iron sleeve
Alternator
Not available—
Not available—
Starting system
Recoil, Electric, Remote
Recoil, Electric, Remote
Warranty
Warranty
3 years
5 years
Power by fuel
GasolineNot available—Not available—
Running watts
3700 W
7500 W
Starting watts
4500 W
9500 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—
11 h
Run time @25% load
16 h
21 h
Natural gasNot available—Not available—
Running watts
Not available—
6500 W
Starting watts
Not available—
8200 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—
7200 W
Starting watts
Not available—
9025 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—
5 h
Run time @25% load
Not available—
9.5 h
Other
Data center
Not available—
Not available—
Indicators
true
true
Compliance
CARB, EPA
EPA
Security
Not available—
Not available—
Spark arrestorYesYes
Neutral
Floating
Not available—
UPC
11675308148
811640017088
Core / High-priority specs
Running Watts (Gasoline)
3700
7500
Running Watts (Propane)
Not available—
7200
Running Watts (Natural Gas)
Not available—
6500
Starting Watts (Gasoline)
4500
9500
Starting Watts (Propane)
Not available—
9025
Starting Watts (Natural Gas)
Not available—
8200
Runtime @ 50% Load (Gasoline)
Not available—
11
Runtime @ 50% Load (Propane)
Not available—
5
Runtime @ 25% Load (Gasoline)
16
21
Runtime @ 25% Load (Propane)
Not available—
9.5
AC Outlet Types
2x Duplex 120V 20A (5-20R)1x 120V 30A (TT-30R)
2x Duplex 120V 20A (5-20R) GFCI; 1x 120/240V 30A (L14-30R); 1x 120/240V 50A (14-50R)
Electrical & power
Frequency
60
60
Engine & construction
Engine Type
Briggs & Stratton OHV 4-stroke
OHV 4-stroke, cast iron sleeve
Engine Displacement
224
459
Cylinder Sleeve
Not available—
Cast iron sleeve
Alternator Winding Material
Not available—
Copper windings
Engine Oil Type
Not available—
10W-30
Runtime & fuel system
Runtime @ 25% Load (Gasoline)
16
21
Runtime @ 50% Load (Gasoline)
Not available—
11
Runtime @ 50% Load (Propane)
Not available—
5
Controls & display
Display Type
Digital
Not available—
Safety & compliance
Overload Protection System
Low oil and overload protection, CO monitoring
Low oil and overload protection, CO monitoring
Low Oil ProtectionYesYes
Carbon Monoxide MonitoringYesYes
Included equipment
Starting Components
Recoil, Electric, Remote
Recoil, Electric, Remote
Included Accessories
Oil, funnel, key fob, and battery
Not available—
Warranty & identification
Commercial Warranty
3
5
Part Number
30814
Not available—
Additional specs
Summary
The Briggs & Stratton 30814 P4500 PowerSmart is a 3700-watt inverter generator built for users who need reliable backup power without the noise of traditional models. At 60 decibels, it runs quiet enough for residential neighborhoods and campgrounds, making it suitable for homeowners managing outages, campers extending trips, and outdoor enthusiasts who cannot tolerate generator noise. The 4500-watt peak output handles startup surges for larger appliances like air conditioning units or power tools, while the 3700-watt running capacity sustains continuous operation. With a 3.5-gallon fuel tank and 16-hour runtime at 25% load, users can power essential devices through a full night or longer without refueling. The inverter technology produces only 3% THD, which means laptops, smartphones, and other sensitive electronics charge safely without risk of voltage spikes or damage.
The DuroMax XP9500iHT is a tri-fuel generator with a rated wattage of 7500 watts and a peak wattage of 9500 watts. It features multiple outlets and advanced starting options.
  • Most Powerful
    DuroMax XP9500iHT
    7500W running
  • Quietest
    Briggs & Stratton 30814 P4500 PowerSmart
    60 dB
  • Longest Runtime
    DuroMax XP9500iHT
    11h at 50% load
Where to buy
Prices can change. We update these automatically.
Briggs & Stratton 30814 P4500 PowerSmart
Store links
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DuroMax XP9500iHT
Store links
No links yet.
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