3 ms·

So how does one keep all the showered-off gunk from clogging up the works ?

• tempestn 3y ago
  There's nothing to clog up. The drain is a normal drain; the innovation is that the cold water source pipe winds around the drain, transferring some of the heat from the outgoing water to the incoming.
  • euroderf 3y ago
    Heat transfer requires time, which is why I've always assumed that such a system would have to use coils somewhere. In the system under discussion, all the heat-transferring parts had better be metal, and it won't be worth a damn except when handling a hot shower or a draining bathtub.