“The unit was easy enough for my daughter to install under the sink. I like how the unit allows the use of any faucet and doesn't require it's own opening in the sink. The unit connects directly to the cold water supply that would normally be going to your faucet. The outlet side connects to your existing faucet. a fitting to join your existing faucet to the out going line may be required but they are easily found in most hardware stores. The unit is easy to mount and maintain or exchange filters and so far no leaks, it seems like a simple, well thought out design.”