That is great. I love finding those kind of things.
Its kind of like the showerhead I just installed at my future in law's house. They had a 2.5 gpm showerhead and I just replaced it with a Niagara Conservation 1.5 gpm handheld one. I didn't ask, I just changed it out. They love it because it actually works better, AND they're using 40% less hot water now. The showerhead will pay for itself within the first month of use even. Its a win win thing.