Installation was pretty easy, even for me who had never installed one before.  I did have to go get some plumber's putty suitable for my acrylic polymer sink. After installing it, though, I noticed right away that it's not nearly as quiet as my previous non-GE 3/4 hp (which had gotten leaky  - probably not long after its 3 yr warranty had expired). If this one will last longer, it will win even though it is not as quiet - it's not like I run it long enough for the noise to be very bothersome.