To tell you the truth, I dont know.How much does it weigh? . . . the water heater, not the nut.
I know my tankless unit was pretty light, just saying.
I do know, that when I was thirty, they weighed a lot less.
Its not so much the weight as it is the size, and how to get ahold of it.
You gotta get low enough to lift it up two feet, which means you basically start in a squat.
Its less than a cast iron tub, but more than two 40s.