Hot Mikvah on Shabbos
I try to go to the mikvah every day before davening, would i be allowed to go into a hot mikvah on shabbos?
Yes, one may rely on the lenient opinions and the widespread custom of Chasidim and others to be tovel in a hot mikvah on Shabbos.
This is based on the rationale that tevila for a mitzvah was not included in the prohibition of bathing on Shabbos [the opinion of the Korban Nesanel]. One should be familiar with the laws of sechita – and make sure not to squeeze any water from his hair or the towel.