Compare Generators Side-by-Side

Generator

Generator

123.4 lbs

20 h

14 h

120/240

120/240

223 cc OHV 4-stroke, cast iron sleeve

223 cc OHV 4-stroke, cast iron sleeve

Recoil

Recoil, Electric

3 years

3 years

5000 W

5000 W

20 h

3600 W

3600 W

9 h

4000 W

Digital Data Center

CARB, EPA, ANSI/PGMA G300-2023

CARB, EPA, ANSI/PGMA G300-2023

850016881311

840876140734

4000

4000

3200

4500

4500

4000

5000

14

20

2x Duplex 120V 20A (5-20R); 1x 120V 30A (L5-30R); 1x 120/240V 30A (L14-30R)

1x Duplex 120V 20A (5-20R) GFCI; 1x 120V 30A (L5-30R); 1x 120/240V 30A (L14-30R)

60

60

OHV 4-stroke, cast iron sleeve

223 cc OHV 4-stroke

cast iron sleeve

cast iron

20

9

Low oil and overload protection

Low oil and overload protection, CO monitoring

Folding handle and wheels

Oil, funnel, tool kit, propane hose, RV adapter, and wheel kit

Oil, funnel, tool kit, propane hose, RV adapter, cover, battery, and wheel kit

3

3

The A-iPower GXS5000D is a 4,000-watt dual-fuel portable generator built around a 223cc OHV 4-stroke engine with cast iron sleeves. On gasoline, it delivers 5,000 starting watts and 4,000 running watts. On propane, output drops to 4,500 starting watts and 3,600 running watts. This power level handles mid-range job site demands: circular saws, air compressors, multiple power tools running simultaneously, or a household refrigerator plus several circuits during an outage. The dual-fuel design means users can switch between gasoline and propane based on availability, storage preference, or runtime needs. Compliance with CARB and EPA standards confirms emissions control without sacrificing performance. The 6.3-gallon fuel tank stretches runtime significantly at light loads. On gasoline at 25 percent load, users get 20 hours of operation before refueling. This extended runtime makes the GXS5000D practical for all-day job sites or overnight emergency backup without constant attention. Propane runtime at the same load reaches 11 hours, a meaningful difference for users who prioritize fuel storage or longer shelf life.

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.