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.
- Generac #8151 iQ3600DF
- Predator 72891
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 #8151 iQ3600DF | Predator 72891 |
|---|---|---|
| General | ||
| Product type | Generator | Generator |
| Fuel | Dual-Fuel | Gasoline |
| Inverter | Yes | Yes |
| Parallel capable | Yes | Yes |
| RV ready | No | No |
| Running watts | Winner: Winner: 2800 W | 1600 W |
| Starting watts | Winner: Winner: 3600 W | 2000 W |
| Noise (lower limit) | 0 dB | Winner: Winner: 58 dB |
| Weight | 107 lbs | Winner: Winner: 49 lbs |
| Run time @50% load | Winner: Winner: 13 h | Not available |
| Run time @25% load | Not available | 12 h |
| Fuel tank | 3.17 gal | Not available |
| Fuel gauge | Yes | No |
| Approx. dimensions (L × W × H) | 24.6 x 20.3 x 22.5 | 22.6 x 12.6 x 18.5 |
| Electrical | ||
| Voltage (AC) | 120 | 120V |
| Voltage (DC) | 5 | Not available |
| GFCI outlets | Yes | No |
| Covered outlets | Yes | No |
| Automatic Voltage Regulation | Yes | No |
| THD | <3% % | Not available |
| Engine | ||
| Engine | 212 cc OHV 4-stroke | Not available |
| Alternator | Not available | Not available |
| Starting system | Recoil, Electric | Not available |
| Warranty | ||
| Warranty | 3 years | 2 years |
| Power by fuel | ||
| Gasoline | Not available | Not available |
| Running watts | 2800 W | Not available |
| Starting watts | 3600 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 | 13 h | Not available |
| Run time @25% load | Not available | Not available |
| Propane | Not available | Not available |
| Running watts | 2500 W | Not available |
| Starting watts | 3200 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 | 16 h | Not available |
| Run time @25% load | Not available | Not available |
| Other | ||
| Data center | Not available | Not available |
| Indicators | true | Not available |
| Compliance | EPA, ANSI/PGMA G300-2023 | Not available |
| Security | Not available | Not available |
| Spark arrestor | Yes | No |
| Neutral | true | Not available |
| UPC | Not available | Not available |
| Core / High-priority specs | ||
| Running Watts (Gasoline) | 2800 | Not available |
| Running Watts (Propane) | 2500 | Not available |
| Starting Watts (Gasoline) | 3600 | Not available |
| Starting Watts (Propane) | 3200 | Not available |
| Runtime @ 50% Load (Gasoline) | 13 | Not available |
| Runtime @ 50% Load (Propane) | 16 | Not available |
| AC Outlet Types | 2x Duplex 120V 20A (5-20R) GFCI1x 120V 30A (L5-30R) | Not available |
| Electrical & power | ||
| Frequency | 60 | 60 |
| Engine & construction | ||
| Engine Type | 212 cc OHV 4-stroke | Not available |
| Engine Displacement | 212 | 79 |
| Engine Oil Type | 10W-30 | Not available |
| Runtime & fuel system | ||
| Runtime @ 50% Load (Gasoline) | 13 | Not available |
| Runtime @ 50% Load (Propane) | 16 | Not available |
| Controls & display | ||
| Display Type | Digital | Not available |
| Safety & compliance | ||
| Low Oil Protection | Yes | Yes |
| Carbon Monoxide Monitoring | Yes | Yes |
| Included equipment | ||
| Starting Components | Recoil, Electric | Not available |
| Included Accessories | Oil, funnel, tool kit, propane hose, and battery | Not available |
| Additional specs | ||
| Summary | The Generac iQ3600DF is a 2,800-watt dual-fuel inverter generator that handles mid-range loads like essential home circuits during outages, multiple appliances at a campsite, or a mix of power tools on a job site. Gasoline delivers 2,800 running watts with 3,600 starting watts; propane runs at 2,500 watts with 3,200 starting watts. The dual-fuel design lets users choose based on fuel availability and storage preferences. Inverter technology keeps THD below 3 percent, protecting laptops and TVs from voltage spikes. Electric start with an included battery eliminates pull-cord friction. The 107-pound weight and compact footprint make it semi-portable but manageable for truck beds and garage storage. | The Predator 72891 is a 2000 Watt Super Quiet Inverter Generator featuring CO SECURE Technology, designed for reliable and quiet power suitable for sensitive electronics. |
- Most PowerfulGenerac #8151 iQ3600DF2800W running
- QuietestPredator 7289158 dB
- Longest RuntimeGenerac #8151 iQ3600DF13h at 50% load
Where to buy
Prices can change. We update these automatically.
Generac #8151 iQ3600DF
Store links
No links yet.
Predator 72891
Store links
No links yet.
Disclosure: Some links may be affiliate links. Specs and comparisons are never hidden.