Product review (3 stars): Great when it works, but hazardous installation possibilities
Installation was quick and easy.  But somehow, I did not seat the plastic tubing in the fitting properly and later that night (bad things always happen when you're not there!) the input line popped out and the entire kitchen and nook were under water.

I reinstalled the system with greater care (and performed major house repairs) and it has worked fine for five years.  I does no major filtration, but the water in the cubes and dispenser are good. Works for us.  The refer. has one built in, but it costs $60 to change out yearly, or more often.  I'll take the GE.  Wish the fittings were a bit more secure, though!