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.

  • A-iPower GXS5000RD
  • VEVOR R2000iSP
  • Model GXS5000RD
    Model GXS5000RD

    A-iPower 4,000W Dual-Fuel Generator

    4000W
    Running
    68 dB
    Noise
    View details
  • Model R2000iSP
    Model R2000iSP

    VEVOR 1,800W Gas Generator

    1800W
    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
SpecificationA-iPower GXS5000RDVEVOR R2000iSP
General
Product type
Generator
Not available—
Fuel
Dual-Fuel
Gasoline
InverterNoNo
Parallel capableNoNo
RV readyNoNo
Running watts
Winner: Winner: 4000 W
1800 W
Starting watts
Winner: Winner: 5000 W
2900 W
Noise (lower limit)
68 dB
Winner: Winner: 67 dB
Weight
124 lbs
Winner: Winner: 48.5 lbs
Run time @50% load
Not available—
Winner: Winner: 6 h
Run time @25% load
20 h
Not available—
Fuel tank
6.3 gal
1.1 gal
Fuel gaugeYesNo
Approx. dimensions (L × W × H)
24 x 23.6 x 24
19.6 x 11.4 x 18.1
Electrical
Voltage (AC)
120/240
120
Voltage (DC)
Not available—
Not available—
GFCI outletsNoNo
Covered outletsYesNo
Automatic Voltage RegulationYesNo
THD
Not available—
Not available—
Engine
Engine
223 cc OHV 4-stroke, cast iron sleeve
Not available—
Alternator
Not available—
Not available—
Starting system
Recoil, Electric, Remote
Not available—
Warranty
Warranty
3 years
Not available—
Power by fuel
GasolineNot available—Not available—
Running watts
4000 W
1800 W
Starting watts
5000 W
2900 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—
6 h
Run time @25% load
20 h
Not available—
PropaneNot available—Not available—
Running watts
3600 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
11 h
Not available—
Other
Data center
Digital Data Center
Not available—
Indicators
true
Not available—
Compliance
CARB, EPA, ANSI/PGMA G300-2023
Not available—
Security
Not available—
Not available—
Spark arrestorYesNo
Neutral
Floating
Not available—
UPC
850016881328
Not available—
Core / High-priority specs
Running Watts (Gasoline)
4000
1800
Running Watts (Propane)
3600
Not available—
Starting Watts (Gasoline)
5000
2900
Starting Watts (Propane)
4500
Not available—
Rated Watts (Gasoline)
4000
Not available—
Rated Watts (Propane)
3600
Not available—
Peak Watts (Gasoline)
5000
Not available—
Peak Watts (Propane)
4500
Not available—
Runtime @ 50% Load (Gasoline)
Not available—
6
Runtime @ 25% Load (Gasoline)
20
Not available—
Runtime @ 25% Load (Propane)
11
Not available—
AC Outlet Types
2x Duplex 120V 20A (5-20R); 1x 120V 30A (L5-30R); 1x 120/240V 30A (L14-30R)
Not available—
Electrical & power
Frequency
60
60
Engine & construction
Engine Type
223 cc OHV 4-stroke
Not available—
Engine Displacement
223
79.7
Cylinder Sleeve
cast iron sleeve
Not available—
Engine Oil Type
10W-30
Not available—
Runtime & fuel system
Runtime @ 25% Load (Gasoline)
20
Not available—
Runtime @ 50% Load (Gasoline)
Not available—
6
Controls & display
Display Type
Digital Data Center
Not available—
Safety & compliance
Overload Protection System
Low oil and overload protection, CO monitoring
Overload protection
Low Oil ProtectionYesNo
Carbon Monoxide MonitoringYesYes
Included equipment
Mobility Components
Wheels and folding handle
Not available—
Starting Components
Battery and fob included
Not available—
Included Accessories
Oil, funnel, tool kit, key fob, propane hose, RV adapter, battery, and wheel kit
Not available—
Warranty & identification
Residential Warranty
3
Not available—
Commercial Warranty
3
Not available—
Part Number
GXS5000RD
R2000iSP
Additional specs
Summary
The A-iPower GXS5000RD is a 4,000-watt dual-fuel generator built around a 223cc OHV engine that runs on either gasoline or propane. On gasoline, it delivers 5,000 starting watts and 4,000 running watts. On propane, output drops to 4,500 starting and 3,600 running watts. This power level handles most household circuits, power tools, and mid-range job site equipment simultaneously. The dual-fuel design means users can switch between fuels based on availability, cost, or storage preference. A 6.3-gallon tank paired with 20-hour runtime at 25% load reduces refueling frequency during light-duty work. The 68 dBA noise level sits between a normal conversation and a vacuum cleaner, making it acceptable for residential neighborhoods with reasonable distance from neighbors.
The VEVOR R2000iSP is a 1,800W gasoline inverter generator built for portability and selective-load backup. Its 2,900W starting surge handles refrigerators, window AC units, and power tools, while the 1,800W continuous rating anchors everyday use like camping, tailgating, and short-duration home outages. At 48.5 lbs and 19.6 x 11.4 x 18.1 inches, it prioritizes grab-and-go convenience over extended runtime.
  • Most Powerful
    A-iPower GXS5000RD
    4000W running
  • Quietest
    VEVOR R2000iSP
    67 dB
  • Longest Runtime
    VEVOR R2000iSP
    6h at 50% load
Where to buy
Prices can change. We update these automatically.
A-iPower GXS5000RD
Store links
No links yet.
VEVOR R2000iSP
Store links
No links yet.
Disclosure: Some links may be affiliate links. Specs and comparisons are never hidden.