UL 303
For UL 303, standard title is Refrigeration and Air-Conditioning Condensing and Compressor Units; status is no longer recognized, recorded from its source on 2026-08-10.
- Test standard
- UL 303 verified
- Standard title
- Refrigeration and Air-Conditioning Condensing and Compressor Units verified
- Status
- no longer recognized our reading
Values marked our reading are our classification of what the source says — the source does not print them in those words. The quote below is the evidence for each one; judge it yourself.
What the source says
UL 303 | Refrigeration and Air-Conditioning Condensing and Compressor Units |
— osha.gov, retrieved 2026-08-10
Source
- osha.govhttps://www.osha.gov/nationally-recognized-testing-laboratory-program/standards-no-longer-recognized