This GENMAX holds 6000 running watts on gasoline and 5500 on propane, so its dual fuel penalty is only about 8 percent, smaller than most units in the class. A digital display reports total running hours, load level, fuel level, amps used, overload and low oil, and it adds a Type-C charge port. Parallel capability lets two units combine for a very large rig.
Remote and electric start make it practical for a coach parked on a slope, and the display lets you see at a glance how close you are to the limit. At 6000 running watts it gives 500 more than the EFURDEN and Honda class units, enough for two air conditioners and a water heater element with margin. The tracking of total running hours is an underrated feature, because it tells you when oil and plug changes are due.
A machine this size is heavy, so plan a ramp or a lift. Propane lowers output only slightly, which makes it a strong choice for boondocking on a cylinder. Standard care applies: oil, filter, hose check and stabilizer. On a long rally the hour meter becomes a maintenance calendar, which saves guessing whether the last oil change was 40 hours ago or 140.
What works
- 6000 running watts on gasoline, 5500 on propane
- Display shows hours, load, fuel and amps
- Remote and electric start
- Parallel capable for a larger rig
Watch out for
- Heavy, needs a ramp or lift
- Newer brand with limited service history
Spec sheet
- Gas running watts
- 6000
- Gas starting watts
- 7250
- Propane running watts
- 5500
- Propane starting watts
- 6000
- Start
- Remote and electric






