From my reading of social media there are two kinds of neurodivergents: 1) hates showing, most unpleasant experience, sensory overload 2) loves showing, could live in the shower, sometimes exits the shower and realises that they forgot to wash their hair or soap up or something. Only misses their daily shower when they are very busy and can’t find an hour in their schedules.

You may be a neurotypical if you:

  • shower each day
  • complete your shower in less than 10 minutes
  • don’t forget any of the 1-3 things you are supposed to do in the shower
  • have no strong feelings about showering
I’ve been known to shower until the hot water runs out. I’ve been known to fall asleep in the shower. I love showers.

Sleeping in the shower! Do you then wake up when you start gurgling?

If you want a good night’s sleep in the shower then get one of those continuous water heaters, or a recirculation shower to save on the water and energy.

I’m suddenly buying a house in extreme need of repairs (including the bathroom), so I’ll look into it, thanks!

I think there’s two ways to do that.

  • A simple heat exchanger from the drain to the cold water running to the shower. A thermostat on the shower reduces the amount of hot water you use as the cold water gets warmer.
  • Recovering water from the drain to go into the shower again, probably via reverse osmosis.
  • Second option requires maintenance and a bunch of engineering. Unless there’s a massive lack of water where you live and you have lots of money.

    First option… Well, it requires more piping and that the drain pipe is a heat exchanging pipe - a pipe within a pipe where the cold water is in the outermost pipe, running in the opposite direction of the drain water. I’m not sure how much heat you would recover. The floor of the shower might need to be a bit higher than otherwise. And if you have hard water then I wouldn’t do it. When you heat cold, hard water the calcium carbonate precipitates and you get limescale. To avoid reducing heat exchange efficiency and avoid clogs you would have to descale regularly and it’s just not very accessible. With normal descaling you can remove a lot mechanically but here it would have to be all chemical. And how would you even get the descaler into those pipes?

    Tl;dr don’t do option 1, only do option 2 if you have very soft water.

    A recovering water system. I can finally have a real golden shower! /s

    A simple heat exchanger from the drain to the cold water running to the shower.

    This is very much a thing! Here’s a DOE explainer page and here’s a Home Depot listing

    I think the usual way these are installed is they go in the basement with the drain portion going between the sewers and the house’s various drains and the fresh water portion going before the water heater to pre-heat the ground-temperature water before it enters the tank (although the DOE’s diagram indicates it pre-heats all fresh water entering the house, thereby also warming the cold water, which is probably great for showering, but not when getting a glass of cold water while the dishwasher or clothes washer are running)

    Drain-Water Heat Recovery

    Did you know that you can use heat from water that you've already used to preheat more hot water -- and reduce your water heating costs?

    Energy.gov