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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
  • ECHO EG-3500
  • Model 30814 P4500 PowerSmart
    Model 30814 P4500 PowerSmart

    Briggs & Stratton 3,700W Gas Generator

    3700W
    Running
    60 dB
    Noise
    View details
  • Model EG-3500
    Model EG-3500

    ECHO 2,800W Gas Generator

    2800W
    Running
    72 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 PowerSmartECHO EG-3500
General
Product type
Generator
Generator
Fuel
Gasoline
Gasoline
InverterYesNo
Parallel capableNoNo
RV readyNoNo
Running watts
Winner: Winner: 3700 W
2800 W
Starting watts
Winner: Winner: 4500 W
3500 W
Noise (lower limit)
Winner: Winner: 60 dB
72 dB
Weight
Winner: Winner: 104 lbs
110 lbs
Run time @50% load
Not available
Winner: Winner: 10 h
Run time @25% load
16 h
Not available
Fuel tank
3.5 gal
4 gal
Fuel gaugeYesYes
Approx. dimensions (L × W × H)
24.5 x 17.6 x 20.36
25 x 24.5 x 21.5
Electrical
Voltage (AC)
120
120
Voltage (DC)
5
Not available
GFCI outletsNoYes
Covered outletsYesYes
Automatic Voltage RegulationYesYes
THD
3 %
Not available
Engine
Engine
Briggs & Stratton OHV 4-stroke 224 cc
212 cc OHV 4-stroke
Alternator
Not available
Not available
Starting system
Recoil, Electric, Remote
Recoil
Warranty
Warranty
3 years
3 years
Power by fuel
GasolineNot availableNot available
Running watts
3700 W
2800 W
Starting watts
4500 W
3500 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
10 h
Run time @25% load
16 h
Not available
Other
Data center
Not available
Not available
Indicators
true
Not available
Compliance
CARB, EPA
CARB, EPA
Security
Not available
Not available
Spark arrestorYesYes
Neutral
Floating
Bonded to frame
UPC
11675308148
743184017586
Core / High-priority specs
Running Watts (Gasoline)
3700
2800
Starting Watts (Gasoline)
4500
3500
Runtime @ 50% Load (Gasoline)
Not available
10
Runtime @ 25% Load (Gasoline)
16
Not available
AC Outlet Types
2x Duplex 120V 20A (5-20R)1x 120V 30A (TT-30R)
2x Duplex 120V 20A (5-20R) GFCI; 1x 120V 30A (L5-30R)
Electrical & power
Frequency
60
60
Engine & construction
Engine Type
Briggs & Stratton OHV 4-stroke
OHV 4-stroke
Engine Displacement
224
212
Runtime & fuel system
Runtime @ 25% Load (Gasoline)
16
Not available
Runtime @ 50% Load (Gasoline)
Not available
10
Controls & display
Display Type
Digital
Not available
Safety & compliance
Overload Protection System
Low oil and overload protection, CO monitoring
Low oil and overload protection
Low Oil ProtectionYesYes
Carbon Monoxide MonitoringYesNo
Included equipment
Starting Components
Recoil, Electric, Remote
Not available
Included Accessories
Oil, funnel, key fob, and battery
Wheel kit
Warranty & identification
Commercial Warranty
3
Not available
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 ECHO EG-3500 is a 2,800-watt gasoline generator built around a 212 cc OHV 4-stroke engine. At this wattage, it handles essential household loads like refrigerators, sump pumps, and power tools, but cannot run a central air conditioner or multiple high-demand appliances simultaneously. The 3,500-watt peak output gives it a brief surge capacity for motor startup, which matters when powering devices with inrush current demands. ECHO positions this unit for homeowners managing short outages, campers needing overnight power, and contractors powering hand tools on job sites where grid access is unavailable.
  • Most Powerful
    Briggs & Stratton 30814 P4500 PowerSmart
    3700W running
  • Quietest
    Briggs & Stratton 30814 P4500 PowerSmart
    60 dB
  • Longest Runtime
    ECHO EG-3500
    10h at 50% load
Where to buy
Prices can change. We update these automatically.
Briggs & Stratton 30814 P4500 PowerSmart
Store links
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ECHO EG-3500
Store links
No links yet.
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