In Jainism there isn’t a fixed number of minutes to boil water for upvas. The scriptures and traditional guidance don’t prescribe an exact boiling duration. Practice varies by community and by guru, and some households may allow drinking boiled or warm water during upvas, while others may have stricter or different rules.

What you can do:

• Check with your local guru or community guidelines for your tradition (Digambar vs. Shwetambar) and family practice.
• If boiled water is permitted in your setting, boil until you feel the water is hot enough for drinking, without adding any other ingredients.

If you’d like, I can look up your specific tradition’s guidance on upvas from JainKnowledge.com and share a page that matches your question.