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.
- Energizer eZV3500P
- Firman T04073
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 | Energizer eZV3500P | Firman T04073 |
|---|---|---|
| General | ||
| Product type | Generator | Generator |
| Fuel | Gasoline | Tri-Fuel |
| Inverter | Yes | No |
| Parallel capable | Yes | No |
| RV ready | No | No |
| Running watts | 3000 W | Winner: Winner: 4000 W |
| Starting watts | 3500 W | Winner: Winner: 5000 W |
| Noise (lower limit) | Winner: Winner: 57 dB | 67 dB |
| Weight | Winner: Winner: 96 lbs | 123.4 lbs |
| Run time @50% load | Not available | Winner: Winner: 12 h |
| Run time @25% load | 15.5 h | 14 h |
| Fuel tank | 1.95 gal | 5 gal |
| Fuel gauge | Yes | Yes |
| Approx. dimensions (L × W × H) | 22.8 x 16.7 x 17.5 | 29.8 x 27.5 x 26.1 |
| Electrical | ||
| Voltage (AC) | 120 | 120/240 |
| Voltage (DC) | 12 | Not available |
| GFCI outlets | No | Yes |
| Covered outlets | Yes | Yes |
| Automatic Voltage Regulation | Yes | Yes |
| THD | Not available | 11%-14% % |
| Engine | ||
| Engine | 212 cc OHV 4-stroke | 223 cc OHV 4-stroke, cast iron sleeve |
| Alternator | Not available | Not available |
| Starting system | Recoil, Electric, Remote | Recoil, Electric |
| Warranty | ||
| Warranty | 3 years | 3 years |
| Power by fuel | ||
| Gasoline | Not available | Not available |
| Running watts | 3000 W | 4000 W |
| Starting watts | 3500 W | 5000 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 | 14 h |
| Run time @25% load | 15.5 h | Not available |
| Natural gas | Not available | Not available |
| Running watts | Not available | 3200 W |
| Starting watts | Not available | 4000 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 | Not available | Not available |
| Propane | Not available | Not available |
| Running watts | Not available | 3600 W |
| Starting watts | Not available | 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 | 9 h |
| Run time @25% load | Not available | Not available |
| Other | ||
| Data center | Not available | Not available |
| Indicators | true | true |
| Compliance | CARB, EPA | CARB, EPA, ANSI/PGMA G300-2023 |
| Security | Not available | Not available |
| Spark arrestor | Yes | Yes |
| Neutral | Floating | true |
| UPC | Not available | 840876140734 |
| Core / High-priority specs | ||
| Running Watts (Gasoline) | 3000 | 4000 |
| Running Watts (Propane) | Not available | 3600 |
| Running Watts (Natural Gas) | Not available | 3200 |
| Starting Watts (Gasoline) | 3500 | 5000 |
| Starting Watts (Propane) | Not available | 4500 |
| Starting Watts (Natural Gas) | Not available | 4000 |
| Runtime @ 50% Load (Gasoline) | Not available | 14 |
| Runtime @ 50% Load (Propane) | Not available | 9 |
| Runtime @ 25% Load (Gasoline) | 15.5 | Not available |
| AC Outlet Types | 1x Duplex 120V 20A (5-20R) 1x 120V 30A (L5-30R) | 1x Duplex 120V 20A (5-20R) GFCI; 1x 120V 30A (L5-30R); 1x 120/240V 30A (L14-30R) |
| Electrical & power | ||
| Frequency | 60 | 60 |
| Engine & construction | ||
| Engine Type | OHV 4-stroke | 223 cc OHV 4-stroke |
| Engine Displacement | 212 | 223 |
| Cylinder Sleeve | Not available | cast iron |
| Runtime & fuel system | ||
| Runtime @ 25% Load (Gasoline) | 15.5 | Not available |
| Runtime @ 50% Load (Gasoline) | Not available | 14 |
| Runtime @ 50% Load (Propane) | Not available | 9 |
| Safety & compliance | ||
| Overload Protection System | Low oil and overload protection | Low oil and overload protection, CO monitoring |
| Low Oil Protection | No | Yes |
| Carbon Monoxide Monitoring | No | Yes |
| Included equipment | ||
| Starting Components | Recoil, Electric, Remote | Recoil, Electric |
| Included Accessories | Funnel, tool kit, key fob, battery charging cables, and battery | Oil, funnel, tool kit, propane hose, RV adapter, cover, battery, and wheel kit |
| Warranty & identification | ||
| Commercial Warranty | 3 | 3 |
| Part Number | INVEZV3500PD | Not available |
| Additional specs | ||
| Summary | The Energizer eZV3500P is a 3,000-watt inverter generator built for users who need portable power without sacrificing convenience. At 3,000 running watts, this unit can power a refrigerator, microwave, and several power tools simultaneously. The 3,500-watt peak capacity handles the startup surge of air conditioning units and compressors. Gasoline fuel means no special storage concerns and easy refueling at any gas station.
The eZV3500P targets outdoor enthusiasts and homeowners who value flexibility in how they start the generator. Three starting options—recoil, electric, and remote—mean you can start it by hand, press a button on the unit, or trigger it from 100 feet away with the included key fob. The inverter technology protects laptops, phones, and other sensitive electronics from voltage spikes. A 3-year warranty covers defects across the generator's core components. | The Firman T04073 is a 4,000-watt tri-fuel generator that runs on gasoline, propane, or natural gas. On gasoline, it delivers 5,000 starting watts and 4,000 running watts, enough to power a refrigerator, microwave, and multiple household circuits simultaneously. On propane, output drops to 3,600 running watts, and on natural gas it falls to 3,200 running watts. This fuel flexibility means users can switch between sources based on availability and cost, a significant advantage during extended outages or in remote locations where one fuel type may be scarce.
The T04073 targets homeowners, RV owners, and job site operators who need reliable backup power without the commitment to a single fuel source. Its 5-gallon tank runs for 14 hours at 25% load on gasoline, translating to roughly one week of emergency backup if you run it a few hours per day. The unit includes a wheel kit, making it easier to position despite its 123.4-pound weight. |
- Most PowerfulFirman T040734000W running
- QuietestEnergizer eZV3500P57 dB
- Longest RuntimeFirman T0407312h at 50% load
Where to buy
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Energizer eZV3500P
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Firman T04073
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