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.
- A-iPower SUA4300i
- Firman W03661OF
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 @25%
h
Running watts by fuel
Shows how output changes across gasoline/propane/natural gas (when available).
| Specification | A-iPower SUA4300i | Firman W03661OF |
|---|---|---|
| General | ||
| Product type | Generator | Generator |
| Fuel | Gasoline | Gasoline |
| Inverter | Yes | Yes |
| Parallel capable | Yes | Yes |
| RV ready | No | Yes |
| Running watts | 3450 W | Winner: Winner: 3650 W |
| Starting watts | 4300 W | Winner: Winner: 4500 W |
| Noise (lower limit) | Winner: Winner: 62 dB | 69 dB |
| Weight | Winner: Winner: 52.9 lbs | 106 lbs |
| Run time @50% load | Not available | Not available |
| Run time @25% load | 7.5 h | Winner: Winner: 25 h |
| Fuel tank | 1.6 gal | 6 gal |
| Fuel gauge | Yes | Yes |
| Approx. dimensions (L × W × H) | 22 x 14.4 x 20.3 in | 24.5 x 24.1 x 23 |
| Electrical | ||
| Voltage (AC) | 120 | 120 |
| Voltage (DC) | 12 | 12 |
| GFCI outlets | No | No |
| Covered outlets | Yes | Yes |
| Automatic Voltage Regulation | Yes | Yes |
| THD | Not available | 3 % |
| Engine | ||
| Engine | 149 cc OHV 4-stroke | 208 cc OHV 4-stroke, cast iron sleeve. |
| Alternator | Not available | Not available |
| Starting system | Recoil | Recoil |
| Warranty | ||
| Warranty | 3 years | 3 years |
| Power by fuel | ||
| Gasoline | Not available | Not available |
| Running watts | 3450 W | 3650 W |
| Starting watts | 4300 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 | Not available | Not available |
| Run time @25% load | 7.5 h | 25 h |
| Other | ||
| Data center | Not available | Not available |
| Indicators | true | true |
| Compliance | CARB, EPA, ANSI/PGMA G300-2023 | CARB, EPA |
| Security | Not available | Not available |
| Spark arrestor | Yes | Yes |
| Neutral | Floating | Floating |
| UPC | 850016881847 | 840876136614 |
| Core / High-priority specs | ||
| Running Watts (Gasoline) | 3450 | 3650 |
| Starting Watts (Gasoline) | 4300 | 4500 |
| Runtime @ 25% Load (Gasoline) | 7.5 | 25 |
| AC Outlet Types | 1x Duplex 120V 20A (5-20R)1x 120V 30A (L5-30R) | 1x Duplex 120V 20A (5-20R); 1x 120V 30A (L5-30R); 1x 120V 50A (14-50R) |
| Electrical & power | ||
| Frequency | 60 | 60 |
| Engine & construction | ||
| Engine Type | OHV 4-stroke | OHV 4-stroke |
| Engine Displacement | 149 | 208 |
| Cylinder Sleeve | Not available | Cast iron sleeve |
| Runtime & fuel system | ||
| Runtime @ 25% Load (Gasoline) | 7.5 | 25 |
| Controls & display | ||
| Display Type | Digital | Not available |
| Safety & compliance | ||
| Overload Protection System | Low oil and overload protection | Low oil and overload protection |
| Low Oil Protection | No | Yes |
| Carbon Monoxide Monitoring | Yes | Yes |
| Included equipment | ||
| Included Accessories | Oil, funnel, tool kit, RV adapter, and battery charging cables | Oil, funnel, tool kit, RV adapter, battery charging cables, and wheel kit |
| Warranty & identification | ||
| Commercial Warranty | 3 | 3 |
| Additional specs | ||
| Summary | The A-iPower SUA4300i is a 3,450-watt inverter generator built for users who need portable backup power without sacrificing portability. At 52.9 lbs, this gasoline-powered unit bridges the gap between job site tools and home emergency backup. The 4,300-watt peak output handles starting surges on refrigerators, air compressors, and power tools, while the 3,450-watt running capacity sustains them once they spin up.
With a 1.6-gallon fuel tank, the SUA4300i runs 7.5 hours at 25 percent load, meaning a full tank covers a full workday or overnight outage without refueling. The recoil start system is simple and reliable, though it requires manual pulling. At 62 dB, the noise level sits at normal conversation volume, making it acceptable for residential neighborhoods and campgrounds where quieter operation matters. | The Firman W03661OF is a 3650-watt inverter generator built around a 208cc OHV 4-stroke engine. This wattage class powers most household circuits simultaneously, including refrigerators, microwaves, and power tools, making it suitable for home backup and job site work. The gasoline fuel type and 6-gallon tank give users a familiar refueling experience without special infrastructure. Because this unit runs on standard fuel, users can source power anywhere gasoline is sold, a major advantage over propane or dual-fuel models. The inverter technology produces clean power at 3 percent THD, which means laptops, phones, and sensitive electronics charge safely without risk of voltage spikes. |
- Most PowerfulFirman W03661OF3650W running
- QuietestA-iPower SUA4300i62 dB
- Longest Runtimeh at 50% load
Where to buy
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A-iPower SUA4300i
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Firman W03661OF
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