Compare Generators Side-by-Side

Generator

Generator

6850 W

143.7 lbs

120/240

120/240

322 cc OHV 4-stroke, cast iron sleeve

322 cc OHV 4-stroke, cast iron sleeve.

Recoil

Recoil, Electric

3 years

3 years

8200 W

6850 W

17 h

14.5 h

5900 W

5000 W

5500 W

Digital data center

EPA, ANSI/PGMA G300-2023

EPA, ANSI/PGMA G300-2023

850055834682

840876155714

Generator

5900

5000

8200

6850

5500

5900

7400

17

14.5

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

1x Duplex 120V 20A (5-20R) GFCI; 1x 120V 30A (TT-30R); 1x 120/240V 30A (L14-30R); 1x 120/240V 50A (14-50R)

60

60

OHV 4-stroke, Cast iron sleeve

OHV 4-stroke

Cast iron sleeve

cast iron sleeve

17

14.5

Digital data center

Low oil and overload protection

Low oil and overload protection, CO monitoring

Yes

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

Oil, funnel, tool kit, propane hose, and battery

3

GXS8200D

The A-iPower GXS8200D is a 6,500-watt dual-fuel generator built for users who need flexible fuel options and extended runtime. On gasoline, it delivers 8,200 starting watts and 6,500 running watts. On propane, it steps down to 7,400 starting watts and 5,900 running watts. This power level handles most household circuits, job site tools, and RV systems simultaneously. The dual-fuel design means you can switch between gasoline and propane depending on what you have on hand and which fuel offers better economics for your situation. The 6.3-gallon tank runs for 17 hours at 25 percent load on gasoline, which translates to weeks of occasional use before refueling becomes a concern. At 50 percent load, the runtime extends even further on propane. The 322cc OHV 4-stroke engine with cast iron sleeve is built for durability in outdoor conditions. This is a workhorse for homeowners, contractors, and RV owners who value fuel flexibility over absolute portability.

The Firman WT05571 is a 5,500-watt tri-fuel generator that runs on gasoline, propane, or natural gas. On gasoline, it delivers 6,850 starting watts and 5,500 running watts, enough to power a full home electrical panel during an outage or run multiple job site tools simultaneously. On propane, output drops to 6,250 starting and 5,000 running watts. On natural gas, it falls to 5,500 starting and 4,500 running watts. This fuel flexibility means users can switch between sources based on availability, cost, or storage preference without buying multiple generators. The tri-fuel capability makes this unit valuable for homeowners in regions with natural gas infrastructure, RV owners who can refill propane at any campground, and contractors who need to adapt to job site fuel availability. The 3 percent THD rating protects laptops, televisions, and other sensitive electronics from voltage spikes that damage circuits. At 67 decibels, the noise level sits between a typical conversation and heavy traffic, making it suitable for residential neighborhoods but audible enough that neighbors will know it is running.