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 GXS8200D
- Cat RP5500
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 | A-iPower GXS8200D | Cat RP5500 |
|---|---|---|
| General | ||
| Product type | Generator | Generator |
| Fuel | Dual-Fuel | Gasoline |
| Inverter | No | No |
| Parallel capable | No | No |
| RV ready | No | No |
| Running watts | Winner: Winner: 6500 W | 5500 W |
| Starting watts | Winner: Winner: 8200 W | 6875 W |
| Noise (lower limit) | Winner: Winner: 68 dB | 0 dB |
| Weight | Winner: Winner: 143.7 lbs | 178 lbs |
| Run time @50% load | Not available | Winner: Winner: 15 h |
| Run time @25% load | Not available | Not available |
| Fuel tank | 6.3 gal | 7.9 gal |
| Fuel gauge | Yes | Yes |
| Approx. dimensions (L × W × H) | 26 x 25 x 23.7 | 32.9 x 27.4 x 24.7 |
| Electrical | ||
| Voltage (AC) | 120/240 | 120/240 |
| Voltage (DC) | 5 | Not available |
| GFCI outlets | Yes | Yes |
| Covered outlets | Yes | Yes |
| Automatic Voltage Regulation | Yes | Yes |
| THD | 23 % | Not available |
| Engine | ||
| Engine | 322 cc OHV 4-stroke, cast iron sleeve | 300 cc OHV 4-stroke |
| Alternator | Not available | Not available |
| Starting system | Recoil | Recoil |
| Warranty | ||
| Warranty | 3 years | 2 years |
| Power by fuel | ||
| Gasoline | Not available | Not available |
| Running watts | 6500 W | 5500 W |
| Starting watts | 8200 W | 6875 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 | 17 h | 15 h |
| Run time @25% load | 17 h | Not available |
| Propane | Not available | Not available |
| Running watts | 5900 W | Not available |
| Starting watts | 7400 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 | Not available | Not available |
| Run time @25% load | 9 h | Not available |
| Other | ||
| Data center | Digital data center | Not available |
| Indicators | true | false |
| Compliance | EPA, ANSI/PGMA G300-2023 | CARB, EPA |
| Security | Not available | Not available |
| Spark arrestor | Yes | Yes |
| Neutral | true | Not available |
| UPC | 850055834682 | 815683020036 |
| Core / High-priority specs | ||
| Generator Type | Generator | Not available |
| Running Watts (Gasoline) | 6500 | 5500 |
| Running Watts (Propane) | 5900 | Not available |
| Starting Watts (Gasoline) | 8200 | 6875 |
| Starting Watts (Propane) | 7400 | Not available |
| Rated Watts (Gasoline) | 6500 | Not available |
| Rated Watts (Propane) | 5900 | Not available |
| Peak Watts (Gasoline) | 8200 | Not available |
| Peak Watts (Propane) | 7400 | Not available |
| Runtime @ 50% Load (Gasoline) | 17 | 15 |
| Runtime @ 25% Load (Gasoline) | 17 | Not available |
| Runtime @ 25% Load (Propane) | 9 | Not available |
| AC Outlet Types | 2x Duplex 120V 20A (5-20R) GFCI; 1x 120V 30A (L5-30R); 1x 120/240V 30A (L14-30R) | 2x Duplex 120V 20A (5-20R) GFCI, 1x 120/240V 30A (L14-30R) |
| Electrical & power | ||
| Frequency | 60 | 60 |
| Engine & construction | ||
| Engine Type | OHV 4-stroke, Cast iron sleeve | OHV 4-stroke |
| Engine Displacement | 322 | 300 |
| Cylinder Sleeve | Cast iron sleeve | Not available |
| Engine Oil Type | Not available | SAE 30 or 10W-30 |
| Runtime & fuel system | ||
| Runtime @ 25% Load (Gasoline) | 17 | Not available |
| Runtime @ 50% Load (Gasoline) | 17 | 15 |
| Controls & display | ||
| Display Type | Digital data center | Not available |
| Safety & compliance | ||
| Overload Protection System | Low oil and overload protection | Low oil and overload protection |
| Low Oil Protection | Yes | Yes |
| Carbon Monoxide Monitoring | Yes | No |
| Included equipment | ||
| Mobility Components | Yes | Not available |
| Included Accessories | Oil, funnel, tool kit, propane hose, and wheel kit | Oil, funnel, tool kit, and wheel kit |
| Warranty & identification | ||
| Residential Warranty | 3 | Not available |
| Commercial Warranty | 3 | Not available |
| Part Number | GXS8200D | 502-3686 |
| Additional specs | ||
| Summary | The A-iPower GXS8200D is a 6,500-watt dual-fuel generator built for users who need flexible fuel options and extended runtime. On gasoline, it delivers 8,200 starting watts and 6,500 running watts. On propane, it steps down to 7,400 starting watts and 5,900 running watts. This power level handles most household circuits, job site tools, and RV systems simultaneously. The dual-fuel design means you can switch between gasoline and propane depending on what you have on hand and which fuel offers better economics for your situation.
The 6.3-gallon tank runs for 17 hours at 25 percent load on gasoline, which translates to weeks of occasional use before refueling becomes a concern. At 50 percent load, the runtime extends even further on propane. The 322cc OHV 4-stroke engine with cast iron sleeve is built for durability in outdoor conditions. This is a workhorse for homeowners, contractors, and RV owners who value fuel flexibility over absolute portability. | The Cat RP5500 is a 5500-watt gasoline generator built for homeowners, contractors, and outdoor enthusiasts who need reliable backup power without the complexity of larger units. This wattage tier handles most household circuits simultaneously, meaning you can run a refrigerator, well pump, and power tools at the same time, but not your entire home's air conditioning system. The 6875-watt peak capacity gives it the muscle to start high-inrush devices like compressors and sump pumps without stalling. Because the RP5500 runs on gasoline, fuel is available at any gas station, eliminating the supply chain friction of propane or diesel models. The 7.9-gallon tank paired with 15-hour runtime at half load means you refuel roughly once per day under typical use, not every few hours. |
- Most PowerfulA-iPower GXS8200D6500W running
- QuietestA-iPower GXS8200D68 dB
- Longest RuntimeCat RP550015h at 50% load
Where to buy
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A-iPower GXS8200D
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Cat RP5500
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