To ensure compliance with OSHA regulations regarding hazard communication, HVAC professionals should develop and implement a comprehensive hazard communication program that includes: maintaining accurate and up-to-date SDSs for all refrigerants used; providing training on SDS interpretation and hazard awareness; ensuring proper labeling and signage of refrigerant containers and equipment; establishing procedures for safe handling, storage, and disposal of refrigerants; and conducting regular audits and reviews to ensure program effectiveness. Additionally, employers must provide employees with access to SDSs and training on the safe use of refrigerants.