- Shabbat and Holidays
- Cooking and Heating
Warm water on shabbat
Question
What is wrong if enything about having the boiler thermostat at a temperature under "Yad Soledet bo" and I use the hot (warm) water in the house?
Answer
It is permitted to heat up water on Shabbat by setting the thermostat of the boiler below the temperature of “Yad Soledet Bo” [45 C.]. It is not forbidden even though it is causing the heating elements to turn on, because it is secondary Grama and Psik Reishah that is permitted. According to Rav S.Z. Auerbach ZT”L it is preferable to install a timer that will turn on the electricity according to set times, whether the water is cold or hot, and the electricity will only stop if it reaches the set temperature.
Nevertheless one should be careful not to use the hot water if the current water that is in the tank is boiling hot [ Temperature of “Yad Soledet Bo”], because he is cooking the cold water that comes in to the tank and mixes with the hot water.
It is permitted to use the hot water that was heated in the way stated above, only in order to wash dishes etc. but not to wash himself, even his face, hands and feet.
[שש"כ פרק א הערה קיח ופרק יד סעיף ב ובהערה יא, מ"ב סימן שכו ס"ק יז].
Making tea on Shabbos
Rabbi Daniel Kirsch | Shevat 5, 5782

Hot water on Shabbat
Various Rabbis | 20 Elul 5767

Soup in a keli sheni
Rabbi Yoel Lieberman | Av 7, 5778

Adding Salt, Sugar, Honey, Water to Hot Foods on Shabbat
Rabbi David Sperling | Cheshvan 24, 5772
Rabbi Moshe Leib Halberstadt
Founder & dean of YORU a unique program designed to cultivate the next generation of Rabbis and Jewish leaders
Nusach for an Avel
Elul 18, 5769
Returning lost property
Tishrei 9, 5770
Biting nails on Shabbat
Tishrei 4, 5770
Electronic door opening on Shabbat
Cheshvan 5, 5770
Is Induction Cooktop good for Pessach?
Rabbi Moshe Leib Halberstadt | Cheshvan 11, 5770
Is Induction Cooktop good for Pessach?
Rabbi Moshe Leib Halberstadt | Cheshvan 11, 5770

Is non ground bulgur chametz?
Rabbi David Sperling | Nisan 8, 5781

Is non ground bulgur chametz?
Rabbi David Sperling | Nisan 8, 5781
Bar/Bat Mitzvah Celebration on Motzaei Tisha BAv
Rabbi Daniel Kirsch | Adar 28, 5783

leather
Rabbi Yoel Lieberman | Adar 16, 5783

Negel Vaser for Babies
Rabbi Yoel Lieberman | Adar 24, 5783
