Skip to content
Skip to main 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.

  • Generac #8947 iQ5200DF
  • WEN DF480iX
  • Model #8947 iQ5200DF
    Model #8947 iQ5200DF

    Generac 3,900W Dual-Fuel Generator

    3900W
    Running
    0 dB
    Noise
    View details
  • Model DF480iX
    Model DF480iX

    WEN 4,000W Dual-Fuel Generator

    4000W
    Running
    62 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 iQ5200DFWEN DF480iX
General
Product type
Generator
Generator
Fuel
Dual-Fuel
Dual-Fuel
InverterYesYes
Parallel capableYesYes
RV readyNoYes
Running watts
3900 W
Winner: Winner: 4000 W
Starting watts
Winner: Winner: 5200 W
4800 W
Noise (lower limit)
0 dB
Winner: Winner: 62 dB
Weight
107 lbs
Winner: Winner: 78.5 lbs
Run time @50% load
Winner: Winner: 9 h
7 h
Run time @25% load
15 h
Not available
Fuel tank
3.2 gal
1.9 gal
Fuel gaugeNoYes
Approx. dimensions (L × W × H)
24.6 x 20.3 x 22.5
23.8 x 12.6 x 22.1
Electrical
Voltage (AC)
120
120
Voltage (DC)
5
12
GFCI outletsYesNo
Covered outletsYesYes
Automatic Voltage RegulationYesNo
THD
<3% %
under 1.2% %
Engine
Engine
223 cc OHV 4-stroke
224 cc OHV 4-stroke
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
3900 W
4000 W
Starting watts
5200 W
4800 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
7 h
Run time @25% load
15 h
Not available
PropaneNot availableNot available
Running watts
3500 W
3600 W
Starting watts
4700 W
4320 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
12 h
Run time @25% load
20 h
Not available
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
true
UPC
696471104509
44459094807
Core / High-priority specs
Running Watts (Gasoline)
3900
4000
Running Watts (Propane)
3500
3600
Starting Watts (Gasoline)
5200
4800
Starting Watts (Propane)
4700
4320
Runtime @ 50% Load (Gasoline)
9
7
Runtime @ 50% Load (Propane)
11
12
Runtime @ 25% Load (Gasoline)
15
Not available
Runtime @ 25% Load (Propane)
20
Not available
AC Outlet Types
2x Duplex 120V 20A (5-20R) GFCI; 1x 120V 30A (L5-30R)
2x Duplex 120V 20A (5-20R); 1x 120V 30A (TT-30R)
Electrical & power
Frequency
60
60
Engine & construction
Engine Type
OHV 4-stroke
OHV 4-stroke
Engine Displacement
223
224
Engine Oil Type
10W-30 / SAE 30
Not available
Runtime & fuel system
Runtime @ 25% Load (Gasoline)
15
Not available
Runtime @ 50% Load (Gasoline)
9
7
Runtime @ 50% Load (Propane)
11
12
Safety & compliance
Overload Protection System
Low oil and overload protection, CO monitoring
Low oil, overload and low fuel protection
Low Oil ProtectionYesYes
Carbon Monoxide MonitoringYesYes
Included equipment
Starting Components
Oil, funnel, tool kit, propane hose, and battery
Recoil, Electric
Included Accessories
Oil, funnel, tool kit, propane hose, and battery
Oil, funnel, tool kit, propane hose, and battery
Warranty & identification
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 WEN DF480iX is a quiet and lightweight 4800-watt dual fuel inverter generator, ideal for RVs and sensitive electronics.
  • Most Powerful
    WEN DF480iX
    4000W running
  • Quietest
    WEN DF480iX
    62 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.
WEN DF480iX
Store links
No links yet.
Disclosure: Some links may be affiliate links. Specs and comparisons are never hidden.