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| Specification | A-iPower GXS5000 | Firman H08051 |
|---|---|---|
| General | ||
| Product type | Generator | Generator |
| Fuel | Gasoline | Dual-Fuel |
| Inverter | No | No |
| Parallel capable | No | No |
| RV ready | Yes | Yes |
| Running watts | 4000 W | Winner: Winner: 8000 W |
| Starting watts | 5000 W | Winner: Winner: 10000 W |
| Noise (lower limit) | Winner: Winner: 68 dB | 74 dB |
| Weight | Winner: Winner: 111.6 lbs | 212 lbs |
| Run time @50% load | Not available | Winner: Winner: 12 h |
| Run time @25% load | 20 h | Not available |
| Fuel tank | 6.3 gal | 8 gal |
| Fuel gauge | Yes | Yes |
| Approx. dimensions (L × W × H) | 24 x 23.6 x 24 | 30.2 x 27.5 x 26.3 |
| Electrical | ||
| Voltage (AC) | 120 | 120/240 |
| Voltage (DC) | Not available | Not available |
| GFCI outlets | No | Yes |
| Covered outlets | Yes | Yes |
| Automatic Voltage Regulation | Yes | Yes |
| THD | 23 % | 25 % |
| Engine | ||
| Engine | 223 cc OHV 4-stroke, cast iron sleeve. | Firman Max-Pro Series OHV 4-stroke, cast iron sleeve |
| Alternator | Not available | Not available |
| Starting system | Recoil | Recoil, Electric |
| Warranty | ||
| Warranty | 3 years | 3 years |
| Power by fuel | ||
| Gasoline | Not available | Not available |
| Running watts | 4000 W | 8000 W |
| Starting watts | 5000 W | 10000 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 | 12 h |
| Run time @25% load | 20 h | Not available |
| Propane | Not available | Not available |
| Running watts | Not available | 7250 W |
| Starting watts | Not available | 9050 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 | Not available |
| Other | ||
| Data center | Not available | Not available |
| Indicators | true | false |
| Compliance | CARB, EPA, ANSI/PGMA G300-2023 | CARB, EPA |
| Security | Not available | Not available |
| Spark arrestor | Yes | Yes |
| Neutral | Not available | Bonded to frame |
| UPC | 850016881298 | 840876180518 |
| Core / High-priority specs | ||
| Running Watts (Gasoline) | 4000 | 8000 |
| Running Watts (Propane) | Not available | 7250 |
| Starting Watts (Gasoline) | 5000 | 10000 |
| Starting Watts (Propane) | Not available | 9050 |
| Runtime @ 50% Load (Gasoline) | Not available | 12 |
| Runtime @ 50% Load (Propane) | Not available | 5 |
| Runtime @ 25% Load (Gasoline) | 20 | Not available |
| AC Outlet Types | 2x 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); 1x 120/240V 30A (L14-30R); 1x 120/240V 50A (14-50R) |
| Electrical & power | ||
| Frequency | 60 | 60 |
| Engine & construction | ||
| Engine Type | OHV 4-stroke | OHV 4-stroke |
| Engine Displacement | 223 | 439 |
| Cylinder Sleeve | cast iron sleeve | Cast iron |
| Runtime & fuel system | ||
| Runtime @ 25% Load (Gasoline) | 20 | Not available |
| Runtime @ 50% Load (Gasoline) | Not available | 12 |
| Runtime @ 50% Load (Propane) | Not available | 5 |
| Safety & compliance | ||
| Overload Protection System | Low oil and overload protection, CO monitoring | Low oil and overload protection |
| Low Oil Protection | No | Yes |
| Carbon Monoxide Monitoring | Yes | No |
| Included equipment | ||
| Mobility Components | Not available | Wheel kit |
| Starting Components | Not available | Recoil, Electric |
| Fuel Connection Components | Not available | Propane hose |
| Included Accessories | Oil, funnel, tool kit, and wheel kit. | Oil, funnel, tool kit, propane hose, battery, and wheel kit |
| Warranty & identification | ||
| Commercial Warranty | 3 | 3 |
| Additional specs | ||
| Summary | The A-iPower GXS5000 is a 4000-watt gasoline generator built for homeowners and RV users who need reliable backup power without excessive noise. With 5000 watts of starting power, it can kick-start larger appliances like air conditioners and well pumps, then sustain 4000 watts of continuous output for essential devices. This wattage class handles a full home backup scenario or powers a job site with moderate tool use, but not heavy industrial equipment or multiple high-draw appliances simultaneously.
At 68 decibels, the GXS5000 runs quieter than most generators in its class. The 6.3-gallon fuel tank delivers 20 hours of runtime at 25 percent load, meaning light-duty use like charging devices or running a refrigerator stretches a full tank across an entire day. The recoil start system and included wheel kit make this a grab-and-go option for users who value simplicity over push-button convenience. | The Firman H08051 is an 8,000-watt dual-fuel generator built to power job sites, homes during outages, and RV setups. Running on gasoline, it delivers 8,000 watts continuously and 10,000 watts at startup, enough to run a refrigerator, microwave, and multiple power tools at once. Switch to propane and the output drops to 7,250 watts running and 9,050 watts starting, a trade-off for fuel flexibility and longer shelf life. The 439cc cast-iron engine is engineered for durability in commercial and residential use. At 212 pounds, this is a stationary or semi-portable unit, not a grab-and-go machine. |
