Installation was easy and completed with in an hour. However, a noticeable "thump" is heard each and every time the water is turned on when the spray nozzle has been in use. If you press the spray nozzle button when the water is turned off it releases the pressure with in the spray nozzle hose and the "thump" can be heard the next time the water is turned on.
Reading through the reviews I see that others are having the same problem. This means its a design issue and you probably don't have a solution.