Installation simply just couldn't be any easier. Some of the reviews mentioned they wish the instructions would say if caulk or tape needed to be used anywhere. No mention--no need. We were holding onto our 20 yr old Delta because we were afraid a new one would not have enough water flow. The Adler CA87530 by Moen faucet actually has better flow than our old Delta. I read where some folks had problems with leaks at the connection where the spray hose connected to the supply tube. Before assembly of this type I always lubricate the o ring with some silicone grease. This helps to insure a good seal as well as lubricate the connection since there will be some movement here when you use the sprayer. DO NOT use petroleum based products as they will damage the o-ring Hope this is some help.