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- Briggs & Stratton 30728 Storm Responder
- DuroMax XP9500iH
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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 | Briggs & Stratton 30728 Storm Responder | DuroMax XP9500iH |
|---|---|---|
| General | ||
| Product type | Generator | Generator |
| Fuel | Gasoline | Dual-Fuel |
| Inverter | No | Yes |
| Parallel capable | No | Yes |
| RV ready | No | Yes |
| Running watts | 6250 W | Winner: Winner: 7600 W |
| Starting watts | 8500 W | Winner: Winner: 9500 W |
| Noise (lower limit) | 0 dB | Winner: Winner: 61 dB |
| Weight | Winner: Winner: 210 lbs | 216 lbs |
| Run time @50% load | Winner: Winner: 11 h | Winner: Winner: 11 h |
| Run time @25% load | Not available | 21 h |
| Fuel tank | 7.5 gal | 7.1 gal |
| Fuel gauge | Yes | Yes |
| Approx. dimensions (L × W × H) | 28 x 27 x 28 | 26.2 x 25 x 29.6 |
| 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 | 3 % |
| Engine | ||
| Engine | Briggs & Stratton® | 459 cc OHV 4-stroke, cast iron sleeve. |
| Alternator | Not available | Not available |
| Starting system | Recoil | Recoil, Electric, Remote |
| Warranty | ||
| Warranty | 2 years | 5 years |
| Power by fuel | ||
| Gasoline | Not available | Not available |
| Running watts | 6250 W | Not available |
| Starting watts | 8500 W | 9500 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 | 11 h | 11 h |
| Run time @25% load | Not available | 21 h |
| Propane | Not available | Not available |
| Running watts | Not available | 7200 W |
| Starting watts | Not available | 9025 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 | Not available | 5 h |
| Run time @25% load | Not available | 9.5 h |
| Other | ||
| Data center | Not available | Not available |
| Indicators | true | true |
| Compliance | ANSI/PGMA G300-2018 | EPA |
| Security | Not available | Not available |
| Spark arrestor | Yes | Yes |
| Neutral | true | Not available |
| UPC | 11675307288 | 811640017026 |
| Core / High-priority specs | ||
| Running Watts (Gasoline) | 6250 | Not available |
| Running Watts (Propane) | Not available | 7200 |
| Starting Watts (Gasoline) | 8500 | 9500 |
| Starting Watts (Propane) | Not available | 9025 |
| Runtime @ 50% Load (Gasoline) | 11 | 11 |
| Runtime @ 50% Load (Propane) | Not available | 5 |
| Runtime @ 25% Load (Gasoline) | Not available | 21 |
| Runtime @ 25% Load (Propane) | Not available | 9.5 |
| AC Outlet Types | 2x Duplex 120V 20A (5-20R); 1x 120/240V 30A (L14-30R) | 2x Duplex 120V 20A (5-20R) GFCI; 1x 120/240V 30A (L14-30R); 1x 120/240V 50A (14-50R) |
| Electrical & power | ||
| Frequency | 60 | 60 |
| Engine & construction | ||
| Engine Type | 1850 Series™ OHV Engine | 459 cc OHV 4-stroke, cast iron sleeve. |
| Engine Displacement | 420 | 459 |
| Cylinder Sleeve | Not available | cast_iron_sleeve |
| Alternator Winding Material | Not available | Copper |
| Engine Oil Type | Not available | 10W-30 |
| Runtime & fuel system | ||
| Runtime @ 25% Load (Gasoline) | Not available | 21 |
| Runtime @ 50% Load (Gasoline) | 11 | 11 |
| Runtime @ 50% Load (Propane) | Not available | 5 |
| Controls & display | ||
| Display Type | StatStation™ Digital Display | Not available |
| Idle Control System | No | Not available |
| Safety & compliance | ||
| Overload Protection System | Low oil and overload protection; CO monitoring | Low oil and overload protection |
| Low Oil Protection | Yes | Yes |
| Carbon Monoxide Monitoring | Yes | Yes |
| Included equipment | ||
| Mobility Components | 10" Never Go Flat Wheels | Not available |
| Starting Components | Recoil | Not available |
| Documentation | operator's manual or illustrated parts list | Not available |
| Included Accessories | Extension cord and wheel kit | Funnel, tool kit, key fob, battery charger, propane hose, and battery |
| Warranty & identification | ||
| Residential Warranty | 2 | Not available |
| Commercial Warranty | 0.25 | 5 |
| Part Number | 030728 | Not available |
| Additional specs | ||
| Summary | The Briggs & Stratton 30728 Storm Responder is a 6250-watt gasoline generator built for homeowners and job sites that need sustained power for essential appliances and tools. With 8500 peak watts, it can start large loads like air compressors and refrigerators that draw high inrush current. The 7.5-gallon fuel tank delivers 11 hours of runtime at half load, meaning users can run the unit through a full workday or overnight without refueling. This is a stationary-leaning portable unit, not a grab-and-go machine. | The DuroMax XP9500iH is a 7,600-watt dual-fuel inverter generator built for whole-home backup and job-site power. Running on either gasoline or propane, it delivers 9,500 starting watts to handle motor inrush demands from air conditioners, well pumps, and power tools. The inverter produces clean 3% THD power, meaning laptops, televisions, and medical equipment run safely without risk of voltage spikes. This is a stationary or semi-portable unit. At 216 pounds, it requires wheels or multiple people to move, making it suited for permanent installation or fixed-location backup rather than frequent relocation.
The fuel flexibility matters in extended outages. Gasoline runs 11 hours at half load before refueling, while propane stretches to 5 hours at the same draw. At quarter load, gasoline delivers 21 hours of runtime, propane 9.5 hours. For homeowners choosing between fuel types, gasoline offers longer intervals between refills, propane offers cleaner storage and no fuel degradation over months. |
- Most PowerfulDuroMax XP9500iH7600W running
- QuietestDuroMax XP9500iH61 dB
- Longest RuntimeBriggs & Stratton 30728 Storm Responder11h at 50% load
Where to buy
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Briggs & Stratton 30728 Storm Responder
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DuroMax XP9500iH
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