EcoDrain cuts down hot water use in showers

In a recent post on inhabitat I came across a brilliant concept that recaptures the heat from your shower water as it runs down the drain. That heat is then recirculated back to the shower mixing valve, thus cutting down your use of hot water from your water heater. Just plain clever. I'm wondering how feasible it is on a retrofit though. More likely it's a feature for new construction.

See the full story on inhabitat here.