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  • ECHO EG-10000
  • Firman WT05571
  • Model EG-10000
    Model EG-10000

    ECHO 7,500W Gas Generator

    7500W
    Running
    84 dB
    Noise
    View details
  • Model WT05571
    Model WT05571

    Firman 5,500W Tri-Fuel Generator

    5500W
    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
SpecificationECHO EG-10000Firman WT05571
General
Product type
Generator
Generator
Fuel
Gasoline
Tri-Fuel
InverterNoYes
Parallel capableNoYes
RV readyNoYes
Running watts
Winner: Winner: 7500 W
5500 W
Starting watts
Winner: Winner: 10000 W
6850 W
Noise (lower limit)
84 dB
Winner: Winner: 67 dB
Weight
212 lbs
Winner: Winner: 131.4 lbs
Run time @50% load
Winner: Winner: 8 h
Not available
Run time @25% load
Not available
14.5 h
Fuel tank
6.6 gal
5.3 gal
Fuel gaugeYesYes
Approx. dimensions (L × W × H)
29 x 27 x 24
27.6 x 21.3 x 22.6
Electrical
Voltage (AC)
120/240
120/240
Voltage (DC)
12
12
GFCI outletsYesYes
Covered outletsYesYes
Automatic Voltage RegulationYesYes
THD
Not available
3 %
Engine
Engine
420 cc Rato OHV 4-stroke
322 cc OHV 4-stroke, cast iron sleeve.
Alternator
Not available
Not available
Starting system
Recoil, Electric
Recoil, Electric
Warranty
Warranty
3 years
3 years
Power by fuel
GasolineNot availableNot available
Running watts
7500 W
5500 W
Starting watts
10000 W
6850 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
Not available
Run time @25% load
Not available
14.5 h
Natural gasNot availableNot available
Running watts
Not available
4500 W
Starting watts
Not available
5500 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 availableNot available
Running watts
Not available
5000 W
Starting watts
Not available
6250 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
9.5 h
Other
Data center
Not available
Not available
Indicators
false
Not available
Compliance
CARB, EPA
EPA, ANSI/PGMA G300-2023
Security
Not available
Not available
Spark arrestorYesYes
Neutral
Bonded to frame
Bonded to frame
UPC
743184017593
840876155714
Core / High-priority specs
Running Watts (Gasoline)
7500
5500
Running Watts (Propane)
Not available
5000
Running Watts (Natural Gas)
Not available
4500
Starting Watts (Gasoline)
10000
6850
Starting Watts (Propane)
Not available
6250
Starting Watts (Natural Gas)
Not available
5500
Runtime @ 50% Load (Gasoline)
8
Not available
Runtime @ 25% Load (Gasoline)
Not available
14.5
Runtime @ 25% Load (Propane)
Not available
9.5
AC Outlet Types
2x Duplex 120V 20A (5-20R) GFCI; 1x 120V 30A (L5-30R); 1x 120/240V 30A (L14-30R)
1x Duplex 120V 20A (5-20R) GFCI; 1x 120V 30A (TT-30R); 1x 120/240V 30A (L14-30R); 1x 120/240V 50A (14-50R)
Electrical & power
Frequency
60
60
Engine & construction
Engine Type
Rato OHV 4-stroke
OHV 4-stroke
Engine Displacement
420
322
Cylinder Sleeve
Not available
cast iron sleeve
Runtime & fuel system
Runtime @ 25% Load (Gasoline)
Not available
14.5
Runtime @ 50% Load (Gasoline)
8
Not available
Safety & compliance
Overload Protection System
Low oil and overload protection
Low oil and overload protection, CO monitoring
Low Oil ProtectionYesYes
Carbon Monoxide MonitoringNoYes
Included equipment
Starting Components
Recoil, Electric
Oil, funnel, tool kit, propane hose, and battery
Included Accessories
Battery and wheel kit
Oil, funnel, tool kit, propane hose, and battery
Warranty & identification
Residential Warranty
3
Not available
Commercial Warranty
3
3
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 Firman WT05571 is a 5,500-watt tri-fuel generator that runs on gasoline, propane, or natural gas. On gasoline, it delivers 6,850 starting watts and 5,500 running watts, enough to power a full home electrical panel during an outage or run multiple job site tools simultaneously. On propane, output drops to 6,250 starting and 5,000 running watts. On natural gas, it falls to 5,500 starting and 4,500 running watts. This fuel flexibility means users can switch between sources based on availability, cost, or storage preference without buying multiple generators. The tri-fuel capability makes this unit valuable for homeowners in regions with natural gas infrastructure, RV owners who can refill propane at any campground, and contractors who need to adapt to job site fuel availability. The 3 percent THD rating protects laptops, televisions, and other sensitive electronics from voltage spikes that damage circuits. At 67 decibels, the noise level sits between a typical conversation and heavy traffic, making it suitable for residential neighborhoods but audible enough that neighbors will know it is running.
  • Most Powerful
    ECHO EG-10000
    7500W running
  • Quietest
    Firman WT05571
    67 dB
  • Longest Runtime
    ECHO EG-10000
    8h at 50% load
Where to buy
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ECHO EG-10000
Store links
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Firman WT05571
Store links
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