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.
- DEWALT DXGNR4000
- Yamaha EF3000iS
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 | DEWALT DXGNR4000 | Yamaha EF3000iS |
|---|---|---|
| General | ||
| Product type | Generator | Generator |
| Fuel | Gasoline | Gasoline |
| Inverter | No | Yes |
| Parallel capable | No | No |
| RV ready | No | No |
| Running watts | Winner: Winner: 4000 W | 2800 W |
| Starting watts | Winner: Winner: 5000 W | 3000 W |
| Noise (lower limit) | 0 dB | Winner: Winner: 54.5 dB |
| Weight | Winner: Winner: 119 lbs | 136 lbs |
| Run time @50% load | Winner: Winner: 10 h | Not available |
| Run time @25% load | Not available | 18.6 h |
| Fuel tank | 3.4 gal | 3.4 gal |
| Fuel gauge | Yes | Yes |
| Approx. dimensions (L × W × H) | 23.7 x 23 x 21.4 | 26.8 x 17.5 x 21.9 |
| Electrical | ||
| Voltage (AC) | 120 | 120 |
| Voltage (DC) | Not available | Not available |
| GFCI outlets | Yes | No |
| Covered outlets | Yes | No |
| Automatic Voltage Regulation | Yes | Yes |
| THD | Not available | Not available |
| Engine | ||
| Engine | 223 cc OHV 4-stroke | 171 cc Yamaha MZ175 OHV 4-stroke |
| 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 | 4000 W | 2800 W |
| Starting watts | 5000 W | 3000 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 | 10 h | Not available |
| Run time @25% load | Not available | 18.6 h |
| Other | ||
| Data center | Not available | Not available |
| Indicators | false | true |
| Compliance | CARB | CARB, EPA |
| Security | Not available | Not available |
| Spark arrestor | Yes | Yes |
| Neutral | true | Floating |
| UPC | 696471075809 | 810856030645 |
| Core / High-priority specs | ||
| Running Watts (Gasoline) | 4000 | 2800 |
| Starting Watts (Gasoline) | 5000 | 3000 |
| Runtime @ 50% Load (Gasoline) | 10 | Not available |
| Runtime @ 25% Load (Gasoline) | Not available | 18.6 |
| AC Outlet Types | 2x Duplex 120V 20A (5-20R) GFCI; 1x 120V 30A (L5-30R) | AC outlets1x Duplex 120V 20A (5-20R)1x 120V 30A (L5-30R) |
| Electrical & power | ||
| Frequency | 60 | 60 |
| Engine & construction | ||
| Engine Type | OHV 4-stroke | Yamaha MZ175 OHV 4-stroke |
| Engine Displacement | 223 | 171 |
| Runtime & fuel system | ||
| Runtime @ 25% Load (Gasoline) | Not available | 18.6 |
| Runtime @ 50% Load (Gasoline) | 10 | Not available |
| Safety & compliance | ||
| Overload Protection System | Low oil and overload protection, CO monitoring | Low oil and overload protection |
| Low Oil Protection | Yes | Yes |
| Carbon Monoxide Monitoring | Yes | Yes |
| Included equipment | ||
| Included Accessories | Oil, funnel, and wheel kit | Battery charging cables |
| Warranty & identification | ||
| Commercial Warranty | Not available | 3 |
| Part Number | PMC164000 | Not available |
| Additional specs | ||
| Summary | The DEWALT DXGNR4000 is a 4000-watt gasoline generator built around a 223cc OHV 4-stroke engine. This wattage class sits at the threshold between household backup and light job site work. At 4000 running watts, it can power a refrigerator, sump pump, and several lights simultaneously during an outage, or run circular saws and air compressors on a construction site, but not both at full capacity. The 5000-watt peak handles motor startup surges, which matters when appliances draw 20 to 30 percent more current at the moment they turn on.
The DXGNR4000 targets users who need portability without sacrificing power. A 3.4-gallon fuel tank delivers 10 hours of runtime at half load, meaning a full tank gets you through a night of backup power or a full workday on site. The recoil start requires physical effort to fire up, but it eliminates the complexity and cost of electric ignition. DEWALT backs this unit with a three-year warranty, signaling confidence in the engine and electrical components. | The Yamaha EF3000iS is a 3000-watt inverter generator designed for quiet operation and portability, featuring advanced technologies like Smart Throttle and Noise Block, and backed by a 3-year limited warranty. |
- Most PowerfulDEWALT DXGNR40004000W running
- QuietestYamaha EF3000iS54.5 dB
- Longest RuntimeDEWALT DXGNR400010h at 50% load
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DEWALT DXGNR4000
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Yamaha EF3000iS
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