Select up to 4 generators to compare specs, power output, noise levels, runtime and more. Your compare URL is shareable.
| Specification | Cummins Onan P4500i | ECHO EG-3500 |
|---|---|---|
| General | ||
| Product type | Generator | Generator |
| Fuel | Gasoline | Gasoline |
| Inverter | Yes | No |
| Parallel capable | Yes | No |
| RV ready | Yes | No |
| Running watts | Winner: Winner: 3700 W | 2800 W |
| Starting watts | Winner: Winner: 4500 W | 3500 W |
| Noise (lower limit) | Winner: Winner: 52 dB | 72 dB |
| Weight | Winner: Winner: 98 lbs | 110 lbs |
| Run time @50% load | Winner: Winner: 15 h | 10 h |
| Run time @25% load | 18 h | Not available |
| Fuel tank | 3.4 gal | 4 gal |
| Fuel gauge | Yes | Yes |
| Approx. dimensions (L × W × H) | 24.5 x 18.3 x 20.5 | 25 x 24.5 x 21.5 |
| Electrical | ||
| Voltage (AC) | 120 | 120 |
| Voltage (DC) | 5 | Not available |
| GFCI outlets | No | Yes |
| Covered outlets | Yes | Yes |
| Automatic Voltage Regulation | Yes | Yes |
| THD | 3 % | Not available |
| Engine | ||
| Engine | 224 cc Ducar OHV 4-stroke | 212 cc OHV 4-stroke |
| 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 | 2800 W |
| Starting watts | 4500 W | 3500 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 | 10 h |
| Run time @25% load | 18 h | Not available |
| Other | ||
| Data center | Not available | Not available |
| Indicators | true | Not available |
| Compliance | CARB, EPA | CARB, EPA |
| Security | Not available | Not available |
| Spark arrestor | Yes | Yes |
| Neutral | Floating | Bonded to frame |
| UPC | 690781007925 | 743184017586 |
| Core / High-priority specs | ||
| Running Watts (Gasoline) | 3700 | 2800 |
| Starting Watts (Gasoline) | 4500 | 3500 |
| Runtime @ 50% Load (Gasoline) | 15 | 10 |
| Runtime @ 25% Load (Gasoline) | 18 | Not available |
| AC Outlet Types | 1x Duplex 120V 20A (5-20R); 1x 120V 30A (TT-30R) | 2x Duplex 120V 20A (5-20R) GFCI; 1x 120V 30A (L5-30R) |
| Electrical & power | ||
| Frequency | 60 | 60 |
| Engine & construction | ||
| Engine Type | Ducar OHV 4-stroke | OHV 4-stroke |
| Engine Displacement | 224 | 212 |
| Engine Oil Type | 10W30 | Not available |
| Runtime & fuel system | ||
| Runtime @ 25% Load (Gasoline) | 18 | Not available |
| Runtime @ 50% Load (Gasoline) | 15 | 10 |
| Safety & compliance | ||
| Overload Protection System | Low oil and overload protection | Low oil and overload protection |
| Low Oil Protection | Yes | Yes |
| Included equipment | ||
| Included Accessories | Oil, funnel, tool kit, key fob, battery charger, and battery | Wheel kit |
| Warranty & identification | ||
| Commercial Warranty | 3 | Not available |
| Part Number | A058U955 | Not available |
| 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 ECHO EG-3500 is a 2,800-watt gasoline generator built around a 212 cc OHV 4-stroke engine. At this wattage, it handles essential household loads like refrigerators, sump pumps, and power tools, but cannot run a central air conditioner or multiple high-demand appliances simultaneously. The 3,500-watt peak output gives it a brief surge capacity for motor startup, which matters when powering devices with inrush current demands. ECHO positions this unit for homeowners managing short outages, campers needing overnight power, and contractors powering hand tools on job sites where grid access is unavailable. |
