Rabbinical Approvals

Rabbi Reuven Feinstein, Rosh Yeshiva of the Yeshiva of Staten Island, provides a comprehensive halachic analysis of the AMNON18 system. His endorsement confirms that the system allows the use of hot water from the boiler on Shabbat lechatchila without any doubt or concern of Sabbath desecration.

The Rabbi outlines three fundamental principles upon which the device operates:

1. Pre-Shabbat Cooling: At the beginning of Shabbat, cold water is added to the boiler so that the water remains below yad soledet.
2. Continuous Temperature Control: Throughout Shabbat, the water is always maintained below yad soledet.
3. Independent Heating Schedule: The heating element operates on a fixed schedule, not dependent on water temperature or usage.

Rabbi Feinstein concludes that based on these principles, the device is permissible for use on Shabbat and Yom Tov without any halachic concerns.

Rabbi Israel D. Harfenes provides a comprehensive endorsement of the AMNON18 system, addressing both technical specifications and halachic considerations. His detailed analysis confirms the system's compliance with Shabbat laws and addresses potential concerns regarding maris ayin (appearance of impropriety).

The Rabbi's endorsement includes specific guidelines for proper usage and emphasizes the importance of following the manufacturer's instructions to maintain halachic compliance.

Rabbi Benjamin Weiss, Chief Rabbi of the Beth Din of Montreal, provides one of the most comprehensive endorsements for the AMNON18 system. His detailed analysis covers all aspects of halachic compliance and includes specific technical requirements.

Key Technical Features Approved:

• Automatic Shabbat Mode: Pre-programmed calendar with 5-year memory
• Temperature Control: Default 39°C, adjustable up to 43°C
• Safety Features: Automatic shut-off for malfunctions
• Heating Method: Continuous state operation (permissible on Shabbat)
• Display: Shows "שבת" (Shabbat) instead of temperature

Installation Requirements:

• No flow sensor in water pipes
• Installation only by authorized Amnon Technologies installer

This endorsement represents one of the most detailed halachic analyses of the system, providing clear guidelines for both users and installers.

The Zomet Institute, under the leadership of Rabbi Yisrael Rozen, provides a professional halachic engineering analysis of the AMNON18 system. As a leading authority on technology and Jewish law, Zomet's endorsement carries significant weight in the halachic community.

Technical Specifications Approved:

• Temperature Control: Water heating limited to at least yad soledet (39-43°C)
• Safety Features: No hot water consumption when above yad soledet
• Heating Method: Continuous state operation (permissible on Shabbat)
• Calendar Integration: Automatic Shabbat mode with 5-year memory
• Display: Shows "שבת" instead of temperature in Shabbat mode

Installation Requirements:

• No flow sensor in water pipes
• Authorized installer only

This endorsement represents the gold standard for halachic technology approval, combining rigorous technical analysis with deep halachic expertise.

Rabbi Dovid S. Ribiat, renowned author of Sefer L'Ohr Malachos (the definitive work on the 39 categories of forbidden labor on Shabbat), provides a detailed endorsement of the AMNON18 system with particular attention to maris ayin concerns.

Key Halachic Principles:

• Temperature Control: Water continuously heated below yad soledet throughout Shabbat
• Automatic Operation: Entire system operates without human intervention
• Continuous Process: Heating is automatic and continuous, not triggered by usage

Important Caveat:

Rabbi Ribiat includes a crucial educational requirement: "However, it is necessary to inform householders, especially children, that permission is only for their home, so they do not mistakenly permit it in other homes, and its benefit turns into a loss - but legally it is permissible."

This endorsement demonstrates the Rabbi's deep understanding of both the technical aspects and the educational responsibilities that come with using such technology on Shabbat.