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- DuroStar DS13000MX
- Generac #7705 GP15500EFI
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 | DuroStar DS13000MX | Generac #7705 GP15500EFI |
|---|---|---|
| General | ||
| Product type | Generator | Generator |
| Fuel | Dual-Fuel | Gasoline |
| Inverter | No | No |
| Parallel capable | No | No |
| RV ready | Yes | Yes |
| Running watts | 10500 W | Winner: Winner: 15500 W |
| Starting watts | 13000 W | Winner: Winner: 19300 W |
| Noise (lower limit) | Winner: Winner: 74 dB | 0 dB |
| Weight | Winner: Winner: 209 lbs | 420 lbs |
| Run time @50% load | 8.5 h | Winner: Winner: 11 h |
| Run time @25% load | 17 h | Not available |
| Fuel tank | 8.3 gal | 14.2 gal |
| Fuel gauge | Yes | Yes |
| Approx. dimensions (L × W × H) | 29.8 x 27.5 x 25.8 | 58.5 x 30.9 x 36.5 |
| Electrical | ||
| Voltage (AC) | 120/240 | 120/240 |
| Voltage (DC) | Not available | Not available |
| GFCI outlets | Yes | Yes |
| Covered outlets | Yes | Yes |
| Automatic Voltage Regulation | Yes | Yes |
| THD | Not available | <5% % |
| Engine | ||
| Engine | 500 cc OHV 4-stroke, cast iron sleeve | Generac G-Force OVHI 4-stroke |
| Alternator | Not available | Not available |
| Starting system | Recoil, Electric, Remote | Electric |
| Warranty | ||
| Warranty | 3 years | 3 years |
| Power by fuel | ||
| Gasoline | Not available | Not available |
| Running watts | 10500 W | 15500 W |
| Starting watts | 13000 W | 19300 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 | 8.5 h | 11 h |
| Run time @25% load | 17 h | Not available |
| Propane | Not available | Not available |
| Running watts | 9975 W | Not available |
| Starting watts | 12350 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 | 3.3 h | Not available |
| Run time @25% load | 6.5 h | Not available |
| Other | ||
| Data center | Not available | Not available |
| Indicators | true | false |
| Compliance | EPA, ANSI/PGMA G300-2023 | EPA |
| Security | Not available | Not available |
| Spark arrestor | Yes | Yes |
| Neutral | true | true |
| UPC | 811640016746 | 696471083705 |
| Core / High-priority specs | ||
| Running Watts (Gasoline) | 10500 | 15500 |
| Running Watts (Propane) | 9975 | Not available |
| Starting Watts (Gasoline) | 13000 | 19300 |
| Starting Watts (Propane) | 12350 | Not available |
| Runtime @ 50% Load (Gasoline) | 8.5 | 11 |
| Runtime @ 50% Load (Propane) | 3.3 | Not available |
| Runtime @ 25% Load (Gasoline) | 17 | Not available |
| Runtime @ 25% Load (Propane) | 6.5 | Not available |
| AC Outlet Types | 2x Duplex 120V 20A (5-20R); 1x 120/240V 30A (L14-30R); 1x 120/240V 50A (14-50R) | 2x Duplex 120V 20A (5-20R) GFCI; 1x 120V 30A (L5-30R); 1x 120/240V 30A (L14-30R); 1x 120/240V 50A (14-50R) |
| Electrical & power | ||
| Frequency | 60 | 60 |
| Engine & construction | ||
| Engine Type | OHV 4-stroke, cast iron sleeve | G-Force OVHI 4-stroke |
| Engine Displacement | 500 | 816 |
| Cylinder Sleeve | Cast iron sleeve | Not available |
| Alternator Winding Material | Copper windings | Not available |
| Engine Oil Type | 10W-30 | 10W-30 / SAE 30 |
| Runtime & fuel system | ||
| Runtime @ 25% Load (Gasoline) | 17 | Not available |
| Runtime @ 50% Load (Gasoline) | 8.5 | 11 |
| Runtime @ 50% Load (Propane) | 3.3 | Not available |
| Safety & compliance | ||
| Overload Protection System | Low oil and overload protection, CO monitoring | Low oil and overload protection, CO monitoring |
| Low Oil Protection | No | Yes |
| Carbon Monoxide Monitoring | Yes | Yes |
| Included equipment | ||
| Starting Components | Recoil, Electric, Remote | Not available |
| Included Accessories | Funnel, tool kit, key fob, battery charger, propane hose, battery, and wheel kit | Oil, battery, and wheel kit |
| Warranty & identification | ||
| Commercial Warranty | 3 | 3 |
| Additional specs | ||
| Summary | The DuroStar DS13000MX is a dual-fuel generator with a rated wattage of 10500 watts and a peak wattage of 13000 watts. It features a 500 cc OHV 4-stroke engine and is designed for versatile power needs. | The Generac #7705 GP15500EFI is a 15,500-watt gasoline generator built for whole-house backup and RV power. Electronic Fuel Injection adjusts fuel delivery based on load, meaning the engine burns only what it needs rather than running at a fixed rate. At this wattage, it can run central air conditioning, a well pump, kitchen appliances, and multiple lighting circuits simultaneously, functioning as a realistic alternative to a permanently installed standby system without the installation cost or natural gas hookup. |
- Most PowerfulGenerac #7705 GP15500EFI15500W running
- QuietestDuroStar DS13000MX74 dB
- Longest RuntimeGenerac #7705 GP15500EFI11h at 50% load
Where to buy
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DuroStar DS13000MX
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Generac #7705 GP15500EFI
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