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- Generac #8947 iQ5200DF
- Genmax GM3500iAED
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 | Generac #8947 iQ5200DF | Genmax GM3500iAED |
|---|---|---|
| General | ||
| Product type | Generator | Generator |
| Fuel | Dual-Fuel | Dual-Fuel |
| Inverter | Yes | Yes |
| Parallel capable | Yes | Yes |
| RV ready | No | No |
| Running watts | Winner: Winner: 3900 W | 3200 W |
| Starting watts | Winner: Winner: 5200 W | 3500 W |
| Noise (lower limit) | 0 dB | Winner: Winner: 62 dB |
| Weight | 107 lbs | Winner: Winner: 56.2 lbs |
| Run time @50% load | Winner: Winner: 9 h | Not available |
| Run time @25% load | 15 h | 9 h |
| Fuel tank | 3.2 gal | 1.7 gal |
| Fuel gauge | No | Yes |
| Approx. dimensions (L × W × H) | 24.6 x 20.3 x 22.5 | 20.9 x 12.2 x 19.7 |
| Electrical | ||
| Voltage (AC) | 120 | 120 |
| Voltage (DC) | 5 | 5 |
| GFCI outlets | Yes | No |
| Covered outlets | Yes | Yes |
| Automatic Voltage Regulation | Yes | Yes |
| THD | <3% % | ≤3% % |
| Engine | ||
| Engine | 223 cc OHV 4-stroke | 145 cc OHV 4-stroke |
| Alternator | Not available | Not available |
| Starting system | Recoil, Electric | Recoil, Electric, Remote |
| Warranty | ||
| Warranty | 3 years | 1 years |
| Power by fuel | ||
| Gasoline | Not available | Not available |
| Running watts | 3900 W | 3200 W |
| Starting watts | 5200 W | 3500 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 | 9 h | Not available |
| Run time @25% load | 15 h | 8 h |
| Propane | Not available | Not available |
| Running watts | 3500 W | 2800 W |
| Starting watts | 4700 W | 3100 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 | Not available |
| Run time @25% load | 20 h | 16 h |
| Other | ||
| Data center | Not available | Not available |
| Indicators | false | true |
| Compliance | CARB, EPA, ANSI/PGMA G300-2023 | EPA, ANSI/PGMA G300-2023 |
| Security | Not available | Not available |
| Spark arrestor | Yes | Yes |
| Neutral | true | true |
| UPC | 696471104509 | 713424639021 |
| Core / High-priority specs | ||
| Running Watts (Gasoline) | 3900 | 3200 |
| Running Watts (Propane) | 3500 | 2800 |
| Starting Watts (Gasoline) | 5200 | 3500 |
| Starting Watts (Propane) | 4700 | 3100 |
| Runtime @ 50% Load (Gasoline) | 9 | Not available |
| Runtime @ 50% Load (Propane) | 11 | Not available |
| Runtime @ 25% Load (Gasoline) | 15 | 8 |
| Runtime @ 25% Load (Propane) | 20 | 16 |
| AC Outlet Types | 2x Duplex 120V 20A (5-20R) GFCI; 1x 120V 30A (L5-30R) | 1x Duplex 120V 20A (5-20R) 1x 120V 30A (L5-30R) |
| Electrical & power | ||
| Frequency | 60 | 60 |
| Engine & construction | ||
| Engine Type | OHV 4-stroke | OHV 4-stroke |
| Engine Displacement | 223 | 145 |
| Engine Oil Type | 10W-30 / SAE 30 | 10W-30 |
| Runtime & fuel system | ||
| Runtime @ 25% Load (Gasoline) | 15 | 8 |
| Runtime @ 50% Load (Gasoline) | 9 | Not available |
| Runtime @ 50% Load (Propane) | 11 | Not available |
| Safety & compliance | ||
| Overload Protection System | Low oil and overload protection, CO monitoring | Not available |
| Low Oil Protection | Yes | Yes |
| Carbon Monoxide Monitoring | Yes | Yes |
| Included equipment | ||
| Starting Components | Oil, funnel, tool kit, propane hose, and battery | Not available |
| Included Accessories | Oil, funnel, tool kit, propane hose, and battery | Funnel, tool kit, key fob, propane hose, RV adapter, and battery |
| Warranty & identification | ||
| Part Number | 8947, 8945 | Not available |
| Additional specs | ||
| Summary | The Generac iQ5200DF is a 3,900-watt dual-fuel inverter generator that bridges emergency home backup and recreational use. At this output level, it powers essential circuits like refrigerators, sump pumps, and window air conditioners simultaneously, but not a full house or central HVAC. The dual-fuel design lets owners switch between gasoline and propane based on availability, a genuine advantage when supply chains break down during extended outages. Because the iQ5200DF produces electronically regulated current with less than 3% THD, laptops, flat-screen TVs, CPAP machines, and smart home devices run safely without voltage-related risk. | The Genmax GM3500iAED is a 3,200-watt dual-fuel inverter generator that runs on gasoline or propane. At 56.2 lbs, it handles essential household loads like refrigerators and small power tools while remaining portable enough for camping or job sites. The 62 dB noise level keeps it residential-friendly. |
- Most PowerfulGenerac #8947 iQ5200DF3900W running
- QuietestGenmax GM3500iAED62 dB
- Longest RuntimeGenerac #8947 iQ5200DF9h at 50% load
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Generac #8947 iQ5200DF
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