something I have thought about for years 

why has no one -,to my knowledge made a heated bath  to run off CH  system 

It would heat the bathroom when not in use and keep the water warm for that long soak . and also be a towel warmer 

seems a simple job 

wrap a plastic bath in UFH piping and resin it in postion --job done 

 If I were younger i would do it my self with a temp stat onso you can set to dired water temp

Am i missing some major reason why not?

Edited February 28, 20242 yr by scottishjohn

Oddly I have been thinking about this for years, I never considered using the bath as a radiator but i looked at spa baths and non of them heated the water, only circulated it so went cold very quickly. That got me thinking of taking water from the bath, heating and returning either as a whirlpool or even falling like a conventional tap … just one of my endless “if I get chance I must do this” lists of engineering tinkering projects.

34 minutes ago, scottishjohn said:

Am i missing some major reason why not?

I don’t think so and would be a nice experiment (shame you have sooo much else to do !).

Already been invented.  It's called a "hot tub"

1 minute ago, ProDave said:

Already been invented.  It's called a "hot tub"

To big to use in a general bathroom, unless they now to small ones so practical to drain water after each use rather than filter

23 minutes ago, markc said:

so practical to drain water after each use

However if you leave the bath water to cool down it will help heat the bathroom 🤷‍♂️

AKA the hypocaust. Something else the Romans did for us that we discarded.

Fantastic idea, be great cleaning off the baked on bodyfat and pubic hairs.

Why would anyone want to soak in a bath for longer than the usual cooldown time of a standard bath.

 

I did recently see a range of baths made of a heat retaining acrylic that offered some kind of solution to this perceived problem. Very expensive though.