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UL 1563 Ed. 7-2025 (2026)

Electric Spas, Equipment Assemblies, and Associated Equipment - Published Date: June 1, 2026

This revision of ANSI/UL 1563 dated June 1, 2026 includes the following changes in requirements: – Addition of Proposed Requirements for Heat Pumps or Chillers that Use Flammable Refrigerants; Section 3, 4.23A, 4.31A, 8.6.1, 8.6.1A, 8.6.1B, 8.6.1C, 8.6.5, Section 8.7, and Annex D. – Revision to Scope to Explicitly Include Cold Tubs; 1.1

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