Skip to content

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.

  • ECHO EG-10000
  • Generac #8150 GP5500E
  • Model EG-10000
    Model EG-10000

    ECHO 7,500W Gas Generator

    7500W
    Running
    84 dB
    Noise
    View details
  • Model #8150 GP5500E
    Model #8150 GP5500E

    Generac 5,500W Gas Generator

    5500W
    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
SpecificationECHO EG-10000Generac #8150 GP5500E
General
Product type
Generator
Generator
Fuel
Gasoline
Gasoline
InverterNoNo
Parallel capableNoNo
RV readyNoNo
Running watts
Winner: Winner: 7500 W
5500 W
Starting watts
Winner: Winner: 10000 W
6875 W
Noise (lower limit)
Winner: Winner: 84 dB
0 dB
Weight
212 lbs
Winner: Winner: 163 lbs
Run time @50% load
8 h
Winner: Winner: 10.5 h
Run time @25% load
Not available
13.4 h
Fuel tank
6.6 gal
5.4 gal
Fuel gaugeYesYes
Approx. dimensions (L × W × H)
29 x 27 x 24
30 x 27 x 25
Electrical
Voltage (AC)
120/240
120/240
Voltage (DC)
12
Not available
GFCI outletsYesYes
Covered outletsYesYes
Automatic Voltage RegulationYesYes
THD
Not available
Not available
Engine
Engine
420 cc Rato OHV 4-stroke
Generac OHV 4-stroke
Alternator
Not available
Not available
Starting system
Recoil, Electric
Recoil, Electric
Warranty
Warranty
3 years
2 years
Power by fuel
GasolineNot availableNot available
Running watts
7500 W
5500 W
Starting watts
10000 W
6875 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
8 h
10.5 h
Run time @25% load
Not available
Not available
Other
Data center
Not available
Not available
Indicators
false
false
Compliance
CARB, EPA
CARB, EPA
Security
Not available
Not available
Spark arrestorYesYes
Neutral
Bonded to frame
true
UPC
743184017593
696471104639
Core / High-priority specs
Running Watts (Gasoline)
7500
5500
Starting Watts (Gasoline)
10000
6875
Runtime @ 50% Load (Gasoline)
8
10.5
AC Outlet Types
2x Duplex 120V 20A (5-20R) GFCI; 1x 120V 30A (L5-30R); 1x 120/240V 30A (L14-30R)
2x Duplex 120V 20A (5-20R) GFCI1x 120/240V 30A (L14-30R)
Electrical & power
Frequency
60
60
Engine & construction
Engine Type
Rato OHV 4-stroke
OHV 4-stroke
Engine Displacement
420
298
Engine Oil Type
Not available
5W-30
Runtime & fuel system
Runtime @ 50% Load (Gasoline)
8
10.5
Safety & compliance
Overload Protection System
Low oil and overload protection
Low oil and overload protection
Low Oil ProtectionYesYes
Carbon Monoxide MonitoringNoYes
Included equipment
Mobility Components
Not available
Yes
Starting Components
Recoil, Electric
Recoil, Electric
Included Accessories
Battery and wheel kit
Oil, Funnel, Tool Kit, Battery, and Wheel Kit
Warranty & identification
Residential Warranty
3
Not available
Commercial Warranty
3
2
Part Number
Not available
8150
Additional specs
Summary
The ECHO EG-10000 is a 7,500-watt running generator built around a 420 cc Rato OHV 4-stroke engine. Peak output reaches 10,000 watts, making it capable of powering multiple heavy appliances and job site tools simultaneously. A 6.6-gallon fuel tank delivers 8 hours of runtime at 50% load, which means users can sustain mid-range power draws through a full workday without refueling. The gasoline engine and dual starting system (recoil and electric) give users flexibility in how they bring the unit online. This is a stationary or semi-portable workhorse, not a grab-and-go unit.
The Generac GP5500E is a 5,500 watt gasoline generator built to power whole house essentials during outages or on job sites. Its 6,875 starting watts handle motor driven appliances like well pumps and air conditioners that demand heavy inrush current. For homeowners and contractors who want reliable backup without crossing into stationary generator territory, the GP5500E delivers meaningful output with the refueling simplicity of gasoline.
  • Most Powerful
    ECHO EG-10000
    7500W running
  • Quietest
    ECHO EG-10000
    84 dB
  • Longest Runtime
    Generac #8150 GP5500E
    10.5h at 50% load
Where to buy
Prices can change. We update these automatically.
ECHO EG-10000
Store links
No links yet.
Generac #8150 GP5500E
Store links
No links yet.
Disclosure: Some links may be affiliate links. Specs and comparisons are never hidden.