Protect people and property from fire, smoke and gases spreading through homes. Apply the latest edition of NFPA 90B. NFPA 90B: Standard for the Installation of Warm Air Heating and Air-Conditioning Systems provides the most up-to-date requirements to keep fire, smoke and gases from originating in and spreading through indoor HVAC systems in 1- and 2-family dwellings, and buildings that are under 25,000 cubic feet. Depend on the latest NFPA 90B for vital fire protection assurance. The requirements cover construction, installation, operation, and maintenance of systems for warm air heating and air conditioning -- including filters, ducts, and related equipment. Compliance helps protect lives and property from fire, smoke, and gases resulting from fire or conditions similar to fire. Provisions cover: HVAC systems, components, and air distribution Integration of a ventilation and air-conditioning system(s) with building construction Controls including wiring, manual control, smoke dampers, and smoke detection for automatic control Acceptance testing Stay up-to-code. AHJs, architects, contractors, mechanical and fire protection engineers, and building owners need NFPA 90B.