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.
- Firman H05752
- Powerhorse s15000d
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 | Firman H05752 | Powerhorse s15000d |
|---|---|---|
| General | ||
| Product type | Generator | Generator |
| Fuel | Dual-Fuel | Dual-Fuel |
| Inverter | No | No |
| Parallel capable | No | No |
| RV ready | No | No |
| Running watts | 5700 W | Winner: Winner: 12000 W |
| Starting watts | 7125 W | Winner: Winner: 15000 W |
| Noise (lower limit) | Winner: Winner: 74 dB | 97 dB |
| Weight | Winner: Winner: 176.5 lbs | 348 lbs |
| Run time @50% load | Winner: Winner: 12 h | 10 h |
| Run time @25% load | Not available | Not available |
| Fuel tank | 8 gal | 10.6 gal |
| Fuel gauge | Yes | Yes |
| Approx. dimensions (L × W × H) | 30.2 x 27.5 x 26.3 | 34.3 x 23.2 x 32.9 |
| Electrical | ||
| Voltage (AC) | 120/240 | 120/240V 60 Hz |
| Voltage (DC) | Not available | 12 |
| GFCI outlets | Yes | Yes |
| Covered outlets | Yes | Yes |
| Automatic Voltage Regulation | Yes | Yes |
| THD | 25 % | <5% % |
| Engine | ||
| Engine | 439 cc Firman Max-Pro Series OHV 4-stroke, cast iron sleeve | 713 cc OHV V-Twin |
| Alternator | Not available | Not available |
| Starting system | Recoil | Electric |
| Warranty | ||
| Warranty | 3 years | 2 years |
| Power by fuel | ||
| Gasoline | Not available | Not available |
| Running watts | 5700 W | Not available |
| Starting watts | 7125 W | 15000 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 | 12 h | Not available |
| Run time @25% load | Not available | Not available |
| Propane | Not available | Not available |
| Running watts | 5700 W | 10800 W |
| Starting watts | 7125 W | 13500 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 | 5 h | Not available |
| Run time @25% load | Not available | Not available |
| 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 | true | Not available |
| UPC | 840876157527 | 840321764027 |
| Core / High-priority specs | ||
| Running Watts (Gasoline) | 5700 | Not available |
| Running Watts (Propane) | 5700 | 10800 |
| Starting Watts (Gasoline) | 7125 | 15000 |
| Starting Watts (Propane) | 7125 | 13500 |
| Runtime @ 50% Load (Gasoline) | 12 | Not available |
| Runtime @ 50% Load (Propane) | 5 | Not available |
| AC Outlet Types | 2x Duplex 120V 20A (5-20R) GFCI1x 120V 30A (L5-30R)1x 120/240V 30A (L14-30R) | Not available |
| Electrical & power | ||
| Frequency | 60 | 60 |
| Engine & construction | ||
| Engine Type | Firman Max-Pro Series OHV 4-stroke, cast iron sleeve | OHV V-Twin |
| Engine Displacement | 439 | 713 |
| Cylinder Sleeve | cast iron sleeve | Not available |
| Runtime & fuel system | ||
| Runtime @ 50% Load (Gasoline) | 12 | Not available |
| Runtime @ 50% Load (Propane) | 5 | Not available |
| Safety & compliance | ||
| Overload Protection System | Low oil and overload protection | Low oil and overload protection, CO monitoring |
| Low Oil Protection | Yes | Yes |
| Carbon Monoxide Monitoring | No | Yes |
| Included equipment | ||
| Mobility Components | Not available | Yes |
| Starting Components | Not available | battery charging cables, battery |
| Included Accessories | Oil, funnel, tool kit, propane hose, and wheel kit | Funnel, tool kit, propane hose, battery charging cables, battery, and wheel kit |
| Warranty & identification | ||
| Residential Warranty | 3 | Not available |
| Commercial Warranty | 3 | Not available |
| Part Number | Not available | 6075687 |
| Additional specs | ||
| Summary | The Firman H05752 is a 5700-watt dual-fuel generator built around a 439cc Firman Max-Pro Series OHV 4-stroke engine with a cast iron sleeve. At this wattage, it can power essential household appliances during outages, run multiple job site tools simultaneously, or supply a campsite with sustained electricity. The dual-fuel design means users can switch between gasoline and propane depending on fuel availability and cost, with the 8-gallon tank delivering 12 hours of runtime on gasoline at 50% load or 5 hours on propane at the same load. This runtime flexibility reduces refueling frequency on longer jobs or extended camping trips. The 3-year warranty covers both residential and commercial use, giving owners defined support across different applications. | The Powerhorse s15000d is a dual-fuel portable generator delivering 15,000 surge watts and 12,000 rated watts, suitable for emergency home backup, EV charging, and demanding worksites. |
- Most PowerfulPowerhorse s15000d12000W running
- QuietestFirman H0575274 dB
- Longest RuntimeFirman H0575212h at 50% load
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Firman H05752
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Powerhorse s15000d
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