Interesting, maybe I'll try this in my smaller shower. My challenge is that (1) we have a low-flow showerhead, so there's not much coming out even when it's on,

Interesting, maybe I'll try this in my smaller shower. My challenge is that (1) we have a low-flow showerhead, so there's not much coming out even when it's on, and (2) our showers are far from the water heater, so it's the least-hot receptacle in the house. We set our water heater temperature pretty low, and by the time it gets to the shower it's less hot and not so steamy. I wish there were a unit we could attach right at the nozzle that would give it a little boost!