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.
- Powerhorse s4500d
- Yamaha EF4500iSE
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 | Powerhorse s4500d | Yamaha EF4500iSE |
|---|---|---|
| General | ||
| Product type | Generator | Generator |
| Fuel | Dual-Fuel | Gasoline |
| Inverter | No | Yes |
| Parallel capable | No | No |
| RV ready | Yes | No |
| Running watts | 3600 W | Winner: Winner: 4000 W |
| Starting watts | Winner: Winner: 4500 W | Winner: Winner: 4500 W |
| Noise (lower limit) | 95 dB | Winner: Winner: 58 dB |
| Weight | Winner: Winner: 121 lbs | 209 lbs |
| Run time @50% load | Winner: Winner: 10.6 h | Not available |
| Run time @25% load | Not available | 15.2 h |
| Fuel tank | 3.9 gal | 4.5 gal |
| Fuel gauge | Yes | Yes |
| Approx. dimensions (L × W × H) | 26.5 x 23.5 x 21.4 | 30.7 x 24.3 x 27.2 |
| Electrical | ||
| Voltage (AC) | 120 | 120 |
| Voltage (DC) | 5 | Not available |
| GFCI outlets | No | No |
| Covered outlets | Yes | No |
| Automatic Voltage Regulation | Yes | Yes |
| THD | <23% % | 3 % |
| Engine | ||
| Engine | 212 cc OHV 4-stroke | Yamaha MZ360 OHV 4-stroke |
| Alternator | Not available | Not available |
| Starting system | Recoil, Electric | Electric |
| Warranty | ||
| Warranty | 2 years | 3 years |
| Power by fuel | ||
| Gasoline | Not available | Not available |
| Running watts | 3600 W | 4000 W |
| Starting watts | 4500 W | 4500 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 | 10.6 h | Not available |
| Run time @25% load | Not available | 15.2 h |
| Propane | Not available | Not available |
| Running watts | 3200 W | Not available |
| Starting watts | 4000 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 | 11 h | Not available |
| Run time @25% load | Not available | Not available |
| Other | ||
| Data center | Not available | Not available |
| Indicators | true | true |
| Compliance | EPA, ANSI/PGMA G300-2023 | CARB, EPA |
| Security | Not available | Not available |
| Spark arrestor | Yes | Yes |
| Neutral | Floating | Floating |
| UPC | 840321764058 | 765053833196 |
| Core / High-priority specs | ||
| Running Watts (Gasoline) | 3600 | 4000 |
| Running Watts (Propane) | 3200 | Not available |
| Starting Watts (Gasoline) | 4500 | 4500 |
| Starting Watts (Propane) | 4000 | Not available |
| Runtime @ 50% Load (Gasoline) | 10.6 | Not available |
| Runtime @ 50% Load (Propane) | 11 | Not available |
| Runtime @ 25% Load (Gasoline) | Not available | 15.2 |
| AC Outlet Types | 1x Duplex 120V 20A (5-20R); 1x 120V 30A (L5-30R); 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 | OHV 4-stroke | OHV 4-stroke |
| Engine Displacement | 212 | 357 |
| Runtime & fuel system | ||
| Runtime @ 25% Load (Gasoline) | Not available | 15.2 |
| Runtime @ 50% Load (Gasoline) | 10.6 | Not available |
| Runtime @ 50% Load (Propane) | 11 | Not available |
| Safety & compliance | ||
| Overload Protection System | Low oil and overload protection, CO monitoring | Low oil and overload protection, CO monitoring |
| Low Oil Protection | Yes | Yes |
| Carbon Monoxide Monitoring | Yes | Yes |
| Included equipment | ||
| Included Accessories | Funnel, tool kit, propane hose, and wheel kit | Battery |
| Warranty & identification | ||
| Commercial Warranty | 2 | Not available |
| Part Number | Not available | EF45ISEZ |
| Additional specs | ||
| Summary | The Powerhorse s4500d is a dual-fuel portable generator offering 4,500 surge watts and 3,600 rated watts, suitable for various applications including home backup and outdoor activities. | The Yamaha EF4500iSE is a 4500-watt inverter generator designed for maximum efficiency and minimal noise, suitable for emergency backup, recreational use, and DIY projects. |
- Most PowerfulYamaha EF4500iSE4000W running
- QuietestYamaha EF4500iSE58 dB
- Longest RuntimePowerhorse s4500d10.6h at 50% load
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Powerhorse s4500d
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