Compare Generators Side-by-Side

Generator

Generator

2250 W

123.4 lbs

14 h

10 h

120/240

120V 60 Hz

223 cc OHV 4-stroke, cast iron sleeve

OHV 4-stroke

Recoil, Electric

Recoil

3 years

2 years

5000 W

2250 W

10 h

3200 W

4500 W

CARB, EPA, ANSI/PGMA G300-2023

CARB, EPA

840876140734

815683024881

4000

1800

3200

4500

14

6

10

60

60

223 cc OHV 4-stroke

OHV 4-stroke

cast iron

10

9

Low oil and overload protection, CO monitoring

Low oil and overload protection

Recoil, Electric

3

2

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.

The Cat INV2000 is an 1800-watt inverter generator built for users who need portable, clean power without the noise. At 48.8 pounds and measuring 19.6 x 12.5 x 18.1 inches, this unit bridges the gap between lightweight portability and genuine load capacity. It runs on standard gasoline and produces less than 3% THD, meaning laptops, phones, and sensitive electronics stay safe from voltage spikes. The recoil start fires up quickly, and the 52 dBA noise level keeps it quiet enough for residential areas and campgrounds. With 10 hours of runtime at 25% load and 6 hours at 50% load, users can power essential devices through a full day or night without refueling. The 1-gallon fuel tank and automatic low-oil shutdown mean less maintenance worry. This is a grab-and-go generator for camping, tailgating, emergency backup, and light outdoor work where portability matters as much as power.