I purchased this kitchen faucet as an upgrade to an existing and still functional 13-year old Moen faucet.  While I am just a home "do it yourself" type person, the removal of the old faucet and installation of the new faucet only required about 1 hour of my time.  The instructions were will written and illustrated and with a little organization of parts prior to commencing, everything went smoothly.  We couldn't be more thrilled!  Our home only utilizes Moen fixtures, right down to the bathroom towel rings and bars.  Moen stands behind their products.  That's why we are Moen customers for life!!!