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Can I take a cold shower? Yes.
Would I take a cold shower? No.
Edit: In some countries they use buckets of water to wash in order to save water but it's not a financial move. It's more for water preservation.
It'll keep Æthelred's boys away, at least.
Cold shower won't actually lower the core body temp, and can wreck your complexion by contracting pores, making them clog easier.
Wearing a teeshirt in the shower and air drying afterwards makes a huge difference, on the other hand.
You need to linger in cold water for an extended period to cool core body temp.
you can alternatively also shower at a colder but not fully cold temperature shouwer with a water saving showerhead (less liter per min) or shower less often or a shorter duration.
lastly a more efficient HR+ or solarpowered boiler can help reduce cost too.
as for how much showering cost.
-average shouwertrip would be 15 min.
-average showerhead uses 10 liter per min..
-average showertemp is 45C
if we presume cold water is 10C (reasonable number)
than your showertrip uses
150 liter water
1.8 m3 gas
well now for me..
water = 0.19 cent per liter.
gas = 2 euro per m3
both including all taxes.
so a hot 15 min long shower costs :
0.29 euro for water
3.60 euro for gas
3.89 euro total.
so showering colf does save you a lot!
but you can compromise..
install a maximum watersaving showerhead (5 liter a min)
shower at just 30C (warm not hot)
and just shower 5 min (a auicl shouwer not a pleasant soak
than you only need
25 liter water (0.05 euro)
0.19 m3 gas (0.39 euro)
= 0.44 euro.
while maintaiming a lot more comfort than with your 15 min cold shower.
and worth spending 0.44 euro instead of 0.29..
you sure can.
or you can install a solar heating system to passively heat the water in a holding tank to be used later, like i did. 👍
got a heater on demand for the winter months where there's less solar exposure, but it does a pretty good job. heating water from 20C to 30C is a lot less expensive than coming from a standard water main temperature.
bout to throw 10kw of electrical solar panels on my house too, they come with a 30 year warranty, so i figure the price is right 👍