All GeneratorsDealsCompareMy PicksGenerator Finder
All GeneratorsDealsCompareMy PicksGenerator Finder
  • Guides
  • Blog
  • FAQ
  • Rankings

Helping you find the right generator for your needs with objective specs and clear comparisons.

Categories

  • Quiet Generators
  • Inverter Generators
  • Dual-Fuel
  • Home Backup
  • Portable
  • All Brands

Resources

  • Rankings
  • Compare Generators
  • Generator Finder
  • Deals
  • Buying Guides
  • Blog
  • FAQ
  • About Us

Legal

  • Terms of Service
  • Privacy Policy
  • DMCA
  • Disclosures

Disclosure

RightGenerator is reader-supported. When you buy through links on our site, we may earn an affiliate commission at no cost to you.

© 2026 RightGenerator. All rights reserved.

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.

  • Westinghouse iGen5000DF
  • Aceup Energy AI4000s
  • Model iGen5000DF
    Model iGen5000DF

    Westinghouse 3,900W Dual-Fuel Generator

    3900W
    Running
    52 dB
    Noise
    View details
  • Model AI4000s
    Model AI4000s

    Aceup Energy 3,200W Inverter Generator

    3200W
    Running
    55 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
SpecificationWestinghouse iGen5000DFAceup Energy AI4000s
General
Product type
Generator
Not available—
Fuel
Dual-Fuel
Not available—
InverterYesYes
Parallel capableYesYes
RV readyYesNo
Running watts
Winner: Winner: 3900 W
3200 W
Starting watts
Winner: Winner: 5000 W
4000 W
Noise (lower limit)
Winner: Winner: 52 dB
55 dB
Weight
Winner: Winner: 104.7 lbs
Not available—
Run time @50% load
Winner: Winner: 15 h
8 h
Run time @25% load
18 h
Not available—
Fuel tank
3.4 gal
1.32 gal
Fuel gaugeYesNo
Approx. dimensions (L × W × H)
24.5 x 17.5 x 20
Not available—
Electrical
Voltage (AC)
120
120V
Voltage (DC)
5
12V
GFCI outletsNoNo
Covered outletsYesNo
Automatic Voltage RegulationYesNo
THD
3 %
Not available—
Engine
Engine
224 cc Westinghouse OHV 4-stroke
4-stroke OHV engine
Alternator
Not available—
Not available—
Starting system
Recoil, Electric, Remote
Not available—
Warranty
Warranty
3 years
2 years
Power by fuel
GasolineNot available—Not available—
Running watts
3900 W
3200 W
Starting watts
5000 W
4000 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
15 h
Not available—
Run time @25% load
18 h
Not available—
PropaneNot available—Not available—
Running watts
3500 W
Not available—
Starting watts
4500 W
Not available—
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
22 h
Not available—
Other
Data center
Not available—
Not available—
Indicators
true
true
Compliance
CARB, EPA
EPA compliant
Security
Not available—
Not available—
Spark arrestorYesNo
Neutral
Floating
Not available—
UPC
850011336540
Not available—
Core / High-priority specs
Running Watts (Gasoline)
3900
3200
Running Watts (Propane)
3500
Not available—
Starting Watts (Gasoline)
5000
4000
Starting Watts (Propane)
4500
Not available—
Runtime @ 50% Load (Gasoline)
15
Not available—
Runtime @ 25% Load (Gasoline)
18
Not available—
Runtime @ 25% Load (Propane)
22
Not available—
AC Outlet Types
1x Duplex 120V 20A (5-20R); 1x 120V 30A (TT-30R)
One 20A outlet, one L5-30R Twist-Lock receptacle
Electrical & power
Frequency
60
60
Engine & construction
Engine Type
OHV 4-stroke
4-stroke OHV engine
Engine Displacement
224
149
Runtime & fuel system
Runtime @ 25% Load (Gasoline)
18
Not available—
Runtime @ 50% Load (Gasoline)
15
Not available—
Controls & display
Display Type
Not available—
Intelligent gauge
Idle Control System
Not available—
Economic mode to save fuel
Safety & compliance
Overload Protection System
Low oil and overload protection
Not available—
Low Oil ProtectionYesNo
Carbon Monoxide MonitoringNoNo
Included equipment
Starting Components
Recoil, Electric, Remote
Recoil start
Included Accessories
Oil, funnel, tool kit, key fob, battery charger, propane hose, and battery
Oil funnel * 2; A bottle of Oil; Spark plug wrench
Warranty & identification
Residential Warranty
Not available—
2
Commercial Warranty
3
2
Part Number
Not available—
AI4000s
Additional specs
Summary
The Westinghouse iGen5000DF is a dual fuel inverter generator that offers 5,000 peak watts and 3,900 rated watts on gasoline, and 4,500 peak watts and 3,500 rated watts on propane. It features a remote start, LED display, and operates quietly, making it suitable for camping, tailgating, RVs, and home backup.
The Aceup Energy AI4000s is a 3200-watt rated generator that operates on fuel and features inverter technology, making it suitable for various power needs.
  • Most Powerful
    Westinghouse iGen5000DF
    3900W running
  • Quietest
    Westinghouse iGen5000DF
    52 dB
  • Longest Runtime
    Westinghouse iGen5000DF
    15h at 50% load
Where to buy
Prices can change. We update these automatically.
Westinghouse iGen5000DF
Store links
No links yet.
Aceup Energy AI4000s
Store links
No links yet.
Disclosure: Some links may be affiliate links. Specs and comparisons are never hidden.