Compare Generators Side-by-Side

Generator

Generator

3300 W

211.6 lbs

14.4 h

6 h

120/240

120

420 cc OHV 4-stroke

145 cc Dinking OHV 4-stroke

Recoil, Electric, Remote

Recoil

3 years

1 years

9500 W

3300 W

14.4 h

6 h

6750 W

CARB, EPA, ANSI/PGMA G300-2023

EPA, ANSI/PGMA G300-2023

768494056087

7500

3000

9500

3300

9.6

4.5

10.8

60

60

OHV 4-stroke

Dinking OHV 4-stroke

SAE10W30

10W-30

14.4

6

Low oil and overload protection

Low oil and overload protection, CO monitoring

Yes

3

The Cummins Onan P9500DF EFI is a 7,500-watt dual-fuel generator built for users who need sustained power across multiple load types. On gasoline, it delivers 7,500 running watts and 9,500 peak watts. On propane, it drops to 6,750 running watts and 8,550 peak watts, which means propane users sacrifice roughly 10 percent of output but gain extended storage life and cleaner emissions. The electronic fuel injection engine handles high-altitude operation up to 13,123 feet without modification, making it viable for mountain jobsites, remote cabins, and RV camps where carbureted engines would struggle. At 211.6 pounds with an included wheel kit, this generator demands stationary placement or two-person handling, but the 6.6-gallon fuel tank stretches runtime to 14.4 hours at 25 percent load on gasoline. This is a workhorse for contractors, emergency backup, and off-grid scenarios where fuel flexibility and durability matter more than portability.

The Genmax GM3300i is a 3000-watt gasoline inverter generator built for portability and clean power. At 47.4 lbs, it moves easily between campsites, job sites, and homes. The 3300-watt peak output handles startup surges on power tools and appliances, while the inverter technology protects laptops and phones from voltage spikes.