We love having our Instant Hot! We have a large home, and the distance from the hot water heater to our kitchen sink is very far, so it takes a few minutes of running the water to get hot water to the kitchen. What a total waste of water that was! Now, we just run the Instant Hot and have the hot water we need. We did get professional help for the installation, mostly because we needed to have the granite drilled, but if you have that hole already, the rest looked easy.