I live in a two story house and it takes the water over a minute until it's at a comfortable temperature. The shower and sink, I always hate to see wasted water going down the drain just because I'm waiting for it to warm up. I can't invest in a new water heater just yet but I don't know if that will even help. I'd like to hear comments on the efficiency of the water heater insulation. Have you reaped any savings on your utilities?