National Fire Protection AssociationNFPA 90AStandard for the Installation of Air-Conditioning and Ventilating Systems.Referenced across 4 Anvilfield field guides. Field guides that apply NFPA 90AHVACHVACDuct insulation field guideHVACDuctwork types field guideHVACRTU install and startup field guideElectricalElectricalFire alarm install and test Often cited alongsideASHRAE 90.1IECCNECNFPA 72SMACNAIBCIFCNFPA 96 Compare your optionsPackaged RTU vs Split system Browse all codes and standards