Air-conditioning and ventilating systems can affect how fire and smoke move through a building, making installation requirements essential to life safety and property protection. NFPA 90A provides users with current requirements for the construction and installation of air-conditioning and ventilating systems, including related components.

Whether you are designing a new system, reviewing materials, or evaluating compliance for an existing installation, NFPA 90A helps limit the spread of fire and related effects (toxic gases, smoke) through air-conditioning and ventilating systems.

Key Features and Benefits of NFPA 90A-2027 Include:

• Updated Noncombustible Material Criteria: Revises the noncombustible material criteria in Chapter 4 to help users apply material requirements more confidently.
  
  
• Revised Extract Source Reference: Updates the extract source document from NFPA 101^® to NFPA 5000^®, aligning the criteria with the referenced NFPA building code source used for these provisions.
  
  
• Updates to Referenced Publications: Incorporates newer editions of referenced publications in support of current knowledge and better coordination.
  
  
• Trusted Fire Protection Standard: Supports safer design, installation, and evaluation of air-conditioning and ventilating systems using a widely recognized NFPA resource.