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.
- Cummins Onan P4500i
- Honda EU2200i
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).
| Specification | Cummins Onan P4500i | Honda EU2200i |
|---|---|---|
| General | ||
| Product type | Generator | Generator |
| Fuel | Gasoline | Gasoline |
| Inverter | Yes | Yes |
| Parallel capable | Yes | Yes |
| RV ready | Yes | No |
| Running watts | Winner: Winner: 3700 W | 1800 W |
| Starting watts | Winner: Winner: 4500 W | 2200 W |
| Noise (lower limit) | 52 dB | Winner: Winner: 48 dB |
| Weight | 98 lbs | Winner: Winner: 47.4 lbs |
| Run time @50% load | Winner: Winner: 15 h | 4 h |
| Run time @25% load | 18 h | 8.1 h |
| Fuel tank | 3.4 gal | 0.95 gal |
| Fuel gauge | Yes | No |
| Approx. dimensions (L × W × H) | 24.5 x 18.3 x 20.5 | 20 x 11.4 x 16.7 |
| Electrical | ||
| Voltage (AC) | 120 | 120 |
| Voltage (DC) | 5 | Not available |
| GFCI outlets | No | No |
| Covered outlets | Yes | Yes |
| Automatic Voltage Regulation | Yes | Yes |
| THD | 3 % | 3 % |
| Engine | ||
| Engine | 224 cc Ducar OHV 4-stroke | 121 cc Honda GXR120 OHV 4-stroke, cast iron sleeve. |
| Alternator | Not available | Not available |
| Starting system | Recoil; Electric; Remote | Recoil |
| Warranty | ||
| Warranty | 3 years | 3 years |
| Power by fuel | ||
| Gasoline | Not available | Not available |
| Running watts | 3700 W | 1800 W |
| Starting watts | 4500 W | 2200 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 | 4 h |
| Run time @25% load | 18 h | 8.1 h |
| Other | ||
| Data center | Not available | Not available |
| Indicators | true | true |
| Compliance | CARB, EPA | EPA, ANSI/PGMA G300-2023 |
| Security | Not available | Not available |
| Spark arrestor | Yes | Yes |
| Neutral | Floating | Floating |
| UPC | 690781007925 | 786102007290 |
| Core / High-priority specs | ||
| Running Watts (Gasoline) | 3700 | 1800 |
| Starting Watts (Gasoline) | 4500 | 2200 |
| Runtime @ 50% Load (Gasoline) | 15 | 4 |
| Runtime @ 25% Load (Gasoline) | 18 | 8.1 |
| AC Outlet Types | 1x Duplex 120V 20A (5-20R); 1x 120V 30A (TT-30R) | 1x Duplex 120V 20A (5-20R) |
| Electrical & power | ||
| Frequency | 60 | 60 |
| Engine & construction | ||
| Engine Type | Ducar OHV 4-stroke | Not available |
| Engine Displacement | 224 | 121 |
| Cylinder Sleeve | Not available | cast iron sleeve |
| Engine Oil Type | 10W30 | Not available |
| Runtime & fuel system | ||
| Runtime @ 25% Load (Gasoline) | 18 | 8.1 |
| Runtime @ 50% Load (Gasoline) | 15 | 4 |
| Safety & compliance | ||
| Overload Protection System | Low oil and overload protection | Low oil and overload protection |
| Low Oil Protection | Yes | Yes |
| Carbon Monoxide Monitoring | No | Yes |
| Included equipment | ||
| Included Accessories | Oil, funnel, tool kit, key fob, battery charger, and battery | Not available |
| Warranty & identification | ||
| Commercial Warranty | 3 | Not available |
| Part Number | A058U955 | EU2200iTAN |
| Additional specs | ||
| Summary | The Cummins Onan P4500i is a 3700-watt inverter generator built for users who need reliable power without the noise penalty. Its 4500-watt peak capacity handles startup surges for air conditioners, power tools, and RV air conditioning units. The gasoline engine runs clean enough for sensitive electronics like laptops and phones, thanks to a 3 percent THD rating that protects against voltage spikes. This unit bridges the gap between portable camping generators and stationary backup power, making it useful for RV owners, homeowners facing extended outages, and contractors working near occupied spaces. | The Honda EU2200i is a 1800-watt inverter generator built for users who need portable, clean power without sacrificing runtime. At 47.4 lbs, it moves easily between locations. Its 3% THD output protects laptops, phones, and sensitive electronics from voltage spikes. Gasoline fuel and an 8.1-hour runtime at 25% load make it practical for camping, job sites, and emergency backup. |
- Most PowerfulCummins Onan P4500i3700W running
- QuietestHonda EU2200i48 dB
- Longest RuntimeCummins Onan P4500i15h at 50% load
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Cummins Onan P4500i
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Honda EU2200i
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