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Honda EU3000iS vs Genmax GM2800iAE

Honda EU3000iS vs Genmax GM2800iAE

Honda EU3000iS runs quieter and far longer, while Genmax GM2800iAE is much lighter and cheaper for light-duty portable power.

  • Genmax GM2800iAE
  • Honda EU3000iS

Comparison Overview

The biggest real-world difference is endurance and refinement: the Honda EU3000iS is rated at 50 dB and runs up to 20 hours at 25% load, while the Genmax GM2800iAE is louder at 62 dB and lists 10 hours at 25% load. If you want long, quiet overnight power, the Honda’s advantage is hard to ignore.

On output, they are close enough for many common loads. The Honda delivers 2800 running watts and 3000 starting watts, while the Genmax provides 2500 running watts and 2800 starting watts. That gap can matter for higher-starting appliances (like some RV air conditioners or well pumps), but for battery charging, lights, a fridge, and small tools, both inverter designs are aimed at clean, stable power.

Portability is where the Genmax flips the script. At 54 lb, it is dramatically easier to lift and store than the Honda at 130.7 lb. Warranty also differs, Honda is 3 years vs Genmax at 1 year. Pick Honda for quieter, longer, more confidence-focused use, or Genmax for lighter, simpler grab-and-go power.

Key takeaways

  • Honda EU3000iS runs quieter at 50 dB, Genmax GM2800iAE is 62 dB.
  • Honda EU3000iS delivers 2800 running watts, Genmax GM2800iAE delivers 2500 running watts.
  • Honda EU3000iS runs up to 20 hours at 25% load, Genmax lists 10 hours.
  • Genmax GM2800iAE weighs 54 lb, Honda EU3000iS weighs 130.7 lb.
  • Honda EU3000iS includes a 3-year warranty, Genmax GM2800iAE includes 1 year.

Best use cases

Choose the Honda EU3000iS if you want a quieter generator for long stretches, especially for camping, RVing in noise-sensitive areas, or home backup where you may run it for many hours at a time. Its 50 dB rating and up to 20 hours at 25% load can translate to fewer refuels and less disruption overnight. The slightly higher output, 2800 running watts and 3000 starting watts, also gives you a bit more breathing room for loads that surge at startup, like some larger refrigerators, freezers, or an RV air conditioner that is right on the edge. The tradeoff is convenience: at 130.7 lb, it is not something most people want to lift into a truck alone, and it takes more commitment to move around.

Choose the Genmax GM2800iAE if portability and occasional-use convenience matter most. At 54 lb, it is far easier to carry to a campsite, tailgate, or to pull out during a short outage to keep essentials going. With 2500 running watts and 2800 starting watts, it can still handle many practical loads like a fridge, lights, device charging, a TV, and smaller power tools, as long as you avoid stacking too many high-draw items at once. The tradeoffs are that it is noticeably louder at 62 dB, and the listed runtime is shorter at 10 hours at 25% load, meaning more frequent refueling for longer events. The 1-year warranty also suggests it is better suited to lighter-duty expectations than long-term, heavy reliance.

Verdict & recommendation

If your priority is the most comfortable day-to-day experience, quieter operation, and fewer refueling stops, the Honda EU3000iS is the better fit on paper with 50 dB noise and up to 20 hours at 25% load. It also brings a bit more headroom at 3000 starting watts and a longer 3-year warranty, which can matter if you expect to depend on it regularly.

If your priority is easy handling and storage, the Genmax GM2800iAE stands out because it weighs only 54 lb, making it much more realistic for one-person transport. You give up runtime, some surge capacity, and you will hear it more at 62 dB, but it can be a practical choice for lighter, shorter-duration needs. In the end, choose based on how often you will run it and how much you value quiet, long runtime versus low weight.

Last updated February 23, 2026

  • Model GM2800iAE
    Model GM2800iAE

    Genmax 2,500W Gas Generator

    2500W
    Running
    62 dB
    Noise
    View details
  • Model EU3000iS
    Model EU3000iS

    Honda 2,800W Gas Generator

    2800W
    Running
    50 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
SpecificationGenmax GM2800iAEHonda EU3000iS
General
Product type
Generator
Generator
Fuel
Gasoline
Gasoline
InverterYesYes
Parallel capableYesYes
RV readyYesNo
Running watts
2500 W
Winner: Winner: 2800 W
Starting watts
2800 W
Winner: Winner: 3000 W
Noise (lower limit)
62 dB
Winner: Winner: 50 dB
Weight
Winner: Winner: 54 lbs
130.7 lbs
Run time @50% load
Not available
Winner: Winner: 10 h
Run time @25% load
10 h
20 h
Fuel tank
1.7 gal
3.4 gal
Fuel gaugeYesYes
Approx. dimensions (L × W × H)
20.7 x 12.2 x 19.7
25.9 x 17.6 x 22
Electrical
Voltage (AC)
120
120
Voltage (DC)
5
Not available
GFCI outletsNoNo
Covered outletsYesYes
Automatic Voltage RegulationYesYes
THD
3 %
<3% %
Engine
Engine
145 cc Dinking OHV 4-stroke
196 cc Honda GX200 OHV 4-stroke, Cast iron sleeve.
Alternator
Not available
Not available
Starting system
Recoil, Electric, Remote
Recoil, Electric
Warranty
Warranty
1 years
3 years
Power by fuel
GasolineNot availableNot available
Running watts
2500 W
2800 W
Starting watts
2800 W
3000 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
10 h
Run time @25% load
10 h
20 h
Other
Data center
Not available
Not available
Indicators
true
true
Compliance
EPA, ANSI/PGMA G300-2023
EPA, ANSI/PGMA G300-2023
Security
Not available
Not available
Spark arrestorYesYes
Neutral
true
Floating
UPC
Not available
786102007320
Core / High-priority specs
Running Watts (Gasoline)
2500
2800
Starting Watts (Gasoline)
2800
3000
Runtime @ 50% Load (Gasoline)
Not available
10
Runtime @ 25% Load (Gasoline)
10
20
AC Outlet Types
1x Duplex 120V 20A (5-20R) 1x 120V 30A (TT-30R)
1x Duplex 120V 20A (5-20R); 1x 120V 30A (L5-30R)
Electrical & power
Frequency
60
60
Engine & construction
Engine Type
Dinking OHV 4-stroke
196 cc Honda GX200 OHV 4-stroke, Cast iron sleeve
Engine Displacement
145
196
Cylinder Sleeve
Not available
Cast iron sleeve
Engine Oil Type
10W-30
Not available
Runtime & fuel system
Runtime @ 25% Load (Gasoline)
10
20
Runtime @ 50% Load (Gasoline)
Not available
10
Safety & compliance
Overload Protection System
Not available
Low oil and overload protection
Low Oil ProtectionYesYes
Carbon Monoxide MonitoringYesYes
Included equipment
Starting Components
Not available
Recoil, Electric
Included Accessories
Not available
Battery
Warranty & identification
Part Number
Not available
EU3000iS1AN
Additional specs
Summary
The Genmax GM2800iAE is a 2800-watt gasoline inverter generator with CO Detect, suitable for emergency home power, outdoor activities, and RV use. Its inverter technology ensures clean power for sensitive electronics and it features multiple starting options for convenience.
The Honda EU3000iS is a 3000-watt inverter generator fueled by gasoline. It offers reliable power output with a starting wattage of 3000 watts and a rated running wattage of 2800 watts, making it suitable for a variety of applications.
  • Most Powerful
    Honda EU3000iS
    2800W running
  • Quietest
    Honda EU3000iS
    50 dB
  • Longest Runtime
    Honda EU3000iS
    10h at 50% load
Where to buy
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Genmax GM2800iAE
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Honda EU3000iS
Store links
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