125 has 2 pilotless models, one with 2 D Cells, mine are going on 2 yrs
now and one with a mini hydro generator, 125 is a one shower model.
170000 Btu. There is also a 180000 Btu model.

OP said 3$ propane, well where? At HD in 1 lb bottles, yes.

0.125 KWH is apx equal to Ng at 2.95 a therm. In the midwest it is apx
1.05 a therm now , nearly 1/3rd the cost.