Quote:
Originally Posted by cRiPpLe_rOoStEr
In my country, a built-in heater element (replaceable) right at the shower head is more usual than central water heating, yet in regions with a colder weather it's more common to resort to central heating. Hotels and hospitals may also resort to central water heating more often.
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I've seen those units in various places around the world. The B&B we stayed at in Scotland had an on-demand electric water heater right in the shower.