Ladiesman271
Homeowner
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Want hot water in the kitchen? It's there. Instead of running the DW with cold water and having the DW heat it for you, or wasting a bunch to get it warm before you start it, and you'd find a recirculation system would end up cheaper and more convenient.
The EERE has a different opinion on that matter.
http://apps1.eere.energy.gov/consumer/your_home/water_heating/index.cfm/mytopic=13050
"Dishwashers with booster heaters typically cost more, but they pay for themselves with energy savings in about 1 year if you also lower the water temperature on your water heater."
I really like only waiting a few second to have hot water in the shower in the morning. Some people pay a lot for sewer charges, and you'd be surprised how much you waste waiting for hot to arrive.
Under worst conditions 30 seconds and 1/2 gallon of water for me. If I brush my teeth first there is no waiting time at all.
You waste more water watering the lawn once a year (which also includes sewer charges)!