NFPA 90A, Installation of Air-Conditioning and Ventilating Systems 2015

Support safer HVAC system installation and fire protection compliance with National Fire Protection Association NFPA 90A, Standard for the Installation of Air-Conditioning and Ventilating Systems, 2015 Edition. This essential standard provides requirements for the construction and installation of air-conditioning and ventilating systems to help reduce the spread of fire, smoke, and toxic gases through commercial and institutional buildings.

HVAC systems can significantly impact how smoke and fire travel throughout a structure. NFPA 90A helps professionals apply effective fire safety practices by establishing installation requirements intended to prevent smoke migration and reduce fire hazards in forced air systems.

The standard applies to buildings over 25,000 cubic feet and to Types III, IV, and V construction more than three stories in height. It also applies to buildings and structures not covered by other applicable NFPA standards.

Who Uses NFPA 90A?

NFPA 90A is an important resource for professionals involved in the design, installation, inspection, and review of commercial and institutional HVAC systems, including:

• Mechanical engineers
• Fire protection engineers
• HVAC contractors and installers
• Architects and building designers
• Code officials and inspectors
• Authorities Having Jurisdiction (AHJs)
• Facility managers and building owners

These professionals rely on NFPA 90A to help address fire and smoke considerations associated with air-conditioning and ventilating systems while supporting consistent code application across multiple building types.

Why Choose NFPA 90A?

NFPA 90A provides users with current requirements for air-conditioning and ventilating systems, including related components, to help limit the spread of smoke, fire, and hazardous gases through HVAC systems.

Whether you are designing a new HVAC system, reviewing plans and materials, or evaluating compliance for an existing installation, NFPA 90A offers practical guidance for supporting life safety and property protection.

2015 Edition Highlights

The 2015 edition of NFPA 90A addresses:

• HVAC systems, components, and air distribution requirements
• Integration of ventilation and air-conditioning systems with building construction
• Controls including wiring, manual controls, smoke dampers, and smoke detection for automatic control
• Acceptance testing requirements
• Fire and smoke migration prevention in forced air systems
• HVAC safety provisions for commercial and institutional buildings

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