Showering on Shabbat
I live in a hot climate and sometimes on Shabbat afternoon I feel like taking a nice, long, relaxing warm shower. Is this permitted?
The Aish Rabbi Replies:
The Talmud discusses a rabbinical decree not to bathe or wash oneself in warm water, even if it was heated before Shabbat, lest one come to heat water on Shabbat. (Talmud - Shabbat 39; Shulchan Aruch OC 32:1 with Mishnah Berurah)
With our heating systems, we cause cold water to enter the boiler, which is in essence cooking on Shabbat, and is prohibited as one of the 39 actions that we cannot do on Shabbat (Talmud Shabbat 73a; Mishnah Berurah 318:1; Igrot Moshe OC 4:75)
Another problem is that a person might come to squeeze out water (from a towel or hair) which is forbidden on Shabbat. (Mishnah Berurah 326:25)
Another problem is that a person might come to use a bar of soap, which is forbidden to use on Shabbat, because of the problem of "smoothening out a solid."