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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.

  • Generac #8947 iQ5200DF
  • Westinghouse iGen2800DFc
  • Model #8947 iQ5200DF
    Model #8947 iQ5200DF

    Generac 3,900W Dual-Fuel Generator

    3900W
    Running
    0 dB
    Noise
    View details
  • Model iGen2800DFc
    Model iGen2800DFc

    Westinghouse 2,200W Dual-Fuel Generator

    2200W
    Running
    52 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
SpecificationGenerac #8947 iQ5200DFWestinghouse iGen2800DFc
General
Product type
Generator
Generator
Fuel
Dual-Fuel
Dual-Fuel
InverterYesYes
Parallel capableYesYes
RV readyNoYes
Running watts
Winner: Winner: 3900 W
2200 W
Starting watts
Winner: Winner: 5200 W
2800 W
Noise (lower limit)
0 dB
Winner: Winner: 52 dB
Weight
107 lbs
Winner: Winner: 45.4 lbs
Run time @50% load
Winner: Winner: 9 h
Not available—
Run time @25% load
15 h
12 h
Fuel tank
3.2 gal
1.1 gal
Fuel gaugeNoYes
Approx. dimensions (L × W × H)
24.6 x 20.3 x 22.5
19.1 x 11.7 x 18
Electrical
Voltage (AC)
120
120
Voltage (DC)
5
Not available—
GFCI outletsYesNo
Covered outletsYesYes
Automatic Voltage RegulationYesYes
THD
<3% %
<3% %
Engine
Engine
223 cc OHV 4-stroke
98 cc OHV 4-stroke, cast iron sleeve.
Alternator
Not available—
Not available—
Starting system
Recoil, Electric
Recoil
Warranty
Warranty
3 years
3 years
Power by fuel
GasolineNot available—Not available—
Running watts
3900 W
2200 W
Starting watts
5200 W
2800 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
9 h
Not available—
Run time @25% load
15 h
12 h
PropaneNot available—Not available—
Running watts
3500 W
1980 W
Starting watts
4700 W
2520 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
11 h
Not available—
Run time @25% load
20 h
38 h
Other
Data center
Not available—
Not available—
Indicators
false
true
Compliance
CARB, EPA, ANSI/PGMA G300-2023
EPA, ANSI/PGMA G300-2023
Security
Not available—
Not available—
Spark arrestorYesYes
Neutral
true
Not available—
UPC
696471104509
850060639838
Core / High-priority specs
Running Watts (Gasoline)
3900
2200
Running Watts (Propane)
3500
1980
Starting Watts (Gasoline)
5200
2800
Starting Watts (Propane)
4700
2520
Runtime @ 50% Load (Gasoline)
9
Not available—
Runtime @ 50% Load (Propane)
11
Not available—
Runtime @ 25% Load (Gasoline)
15
12
Runtime @ 25% Load (Propane)
20
38
AC Outlet Types
2x Duplex 120V 20A (5-20R) GFCI; 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
OHV 4-stroke
98 cc OHV 4-stroke, cast iron sleeve
Engine Displacement
223
98
Cylinder Sleeve
Not available—
Cast iron sleeve
Alternator Winding Material
Not available—
Copper
Engine Oil Type
10W-30 / SAE 30
SAE 10W-30
Runtime & fuel system
Runtime @ 25% Load (Gasoline)
15
12
Runtime @ 50% Load (Gasoline)
9
Not available—
Runtime @ 50% Load (Propane)
11
Not available—
Safety & compliance
Overload Protection System
Low oil and overload protection, CO monitoring
Low oil and overload protection
Low Oil ProtectionYesYes
Carbon Monoxide MonitoringYesYes
Included equipment
Starting Components
Oil, funnel, tool kit, propane hose, and battery
Not available—
Included Accessories
Oil, funnel, tool kit, propane hose, and battery
Oil, funnel, tool kit, and propane hose
Warranty & identification
Residential Warranty
Not available—
3
Commercial Warranty
Not available—
3
Part Number
8947, 8945
Not available—
Additional specs
Summary
The Generac iQ5200DF is a 3,900-watt dual-fuel inverter generator that bridges emergency home backup and recreational use. At this output level, it powers essential circuits like refrigerators, sump pumps, and window air conditioners simultaneously, but not a full house or central HVAC. The dual-fuel design lets owners switch between gasoline and propane based on availability, a genuine advantage when supply chains break down during extended outages. Because the iQ5200DF produces electronically regulated current with less than 3% THD, laptops, flat-screen TVs, CPAP machines, and smart home devices run safely without voltage-related risk.
The Westinghouse iGen2800DFc is a 2200-watt dual-fuel inverter generator that runs on gasoline or propane. Its lightweight 45.4-pound frame and 52 dBA noise level make it suitable for RV camping, backup power, and job sites where portability and quiet operation matter.
  • Most Powerful
    Generac #8947 iQ5200DF
    3900W running
  • Quietest
    Westinghouse iGen2800DFc
    52 dB
  • Longest Runtime
    Generac #8947 iQ5200DF
    9h at 50% load
Where to buy
Prices can change. We update these automatically.
Generac #8947 iQ5200DF
Store links
No links yet.
Westinghouse iGen2800DFc
Store links
No links yet.
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