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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.

  • Firman W01785
  • Yamaha EF2200iS
  • Model W01785
    Model W01785

    Firman 1,700W Gas Generator

    1700W
    Running
    54 dB
    Noise
    View details
  • Model EF2200iS
    Model EF2200iS

    Yamaha 1,800W Gas Generator

    1800W
    Running
    57 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 @25%
h
Running watts by fuel
Shows how output changes across gasoline/propane/natural gas (when available).
Generator Specifications Comparison
SpecificationFirman W01785Yamaha EF2200iS
General
Product type
Generator
Generator
Fuel
Gasoline
Gasoline
InverterYesYes
Parallel capableYesYes
RV readyNoYes
Running watts
1700 W
Winner: Winner: 1800 W
Starting watts
2100 W
Winner: Winner: 2200 W
Noise (lower limit)
Winner: Winner: 54 dB
57 dB
Weight
Winner: Winner: 45.9 lbs
55.2 lbs
Run time @50% load
Not available
Not available
Run time @25% load
9 h
Winner: Winner: 10.5 h
Fuel tank
0.9 gal
1.24 gal
Fuel gaugeNoYes
Approx. dimensions (L × W × H)
20 x 12.1 x 16.7
21.9 x 11.8 x 18.5
Electrical
Voltage (AC)
120
120
Voltage (DC)
5
12
GFCI outletsNoNo
Covered outletsYesNo
Automatic Voltage RegulationYesYes
THD
<3% %
2.5 %
Engine
Engine
80 cc OHV 4-stroke, cast iron sleeve.
79 cc Yamaha MZ80 OHV 4-stroke
Alternator
Not available
Not available
Starting system
Not available
Recoil
Warranty
Warranty
3 years
3 years
Power by fuel
GasolineNot availableNot available
Running watts
Not available
1800 W
Starting watts
Not available
2200 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
10.5 h
Other
Data center
Not available
Not available
Indicators
true
true
Compliance
CARB, EPA
CARB, EPA
Security
Not available
Not available
Spark arrestorYesYes
Neutral
Floating
Not available
UPC
840876117859
810856030317
Core / High-priority specs
Running Watts (Gasoline)
Not available
1800
Starting Watts (Gasoline)
Not available
2200
Runtime @ 25% Load (Gasoline)
Not available
10.5
AC Outlet Types
1x 120V 20A (5-20R); 1x 120V 30A (L5-30R)
1x Duplex 120V 20A (5-20R); 1x 120V 30A (TT-30R)
Electrical & power
Frequency
60
60
Engine & construction
Engine Type
80 cc OHV 4-stroke, cast iron sleeve.
OHV 4-stroke
Engine Displacement
80
79
Cylinder Sleeve
cast iron sleeve
Not available
Runtime & fuel system
Runtime @ 25% Load (Gasoline)
Not available
10.5
Safety & compliance
Overload Protection System
Not available
Low oil and overload protection
Low Oil ProtectionYesYes
Carbon Monoxide MonitoringYesYes
Included equipment
Included Accessories
Oil, funnel, tool kit, and RV adapter
No accessories
Warranty & identification
Residential Warranty
3
Not available
Commercial Warranty
Not available
3
Additional specs
Summary
The Firman W01785 is a 1,700-watt inverter generator built on an 80 cc OHV 4-stroke engine with a cast iron sleeve. At 45.9 lbs, this unit delivers enough power to run a laptop, phone chargers, small power tools, and basic household appliances simultaneously, but cannot handle heavy loads like air conditioners or large welders. The 2,100-watt peak gives it the starting surge needed for devices with inrush current, such as refrigerators or circular saws. Because the W01785 runs on gasoline and produces less than 3 percent THD, users can safely connect sensitive electronics like laptops and televisions without risk of voltage spikes causing damage. The 54 dB noise level means operation at conversational volume, making this unit suitable for campgrounds, residential neighborhoods, and RV parks where noise restrictions apply.
The Yamaha EF2200iS is a portable inverter generator that offers a balance between power and portability, making it ideal for campers, caravanners, adventurers, and outdoor enthusiasts.
  • Most Powerful
    Yamaha EF2200iS
    1800W running
  • Quietest
    Firman W01785
    54 dB
  • Longest Runtime
    h at 50% load
Where to buy
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Firman W01785
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Yamaha EF2200iS
Store links
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