{"product_id":"nfpa-90a-installation-of-air-conditioning-and-ventilating-systems-2021","title":"NFPA 90A, Installation of Air-Conditioning and Ventilating Systems 2021","description":"\u003csection class=\"text-token-text-primary w-full focus:outline-none [--shadow-height:45px] has-data-writing-block:pointer-events-none has-data-writing-block:-mt-(--shadow-height) has-data-writing-block:pt-(--shadow-height) [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto [content-visibility:auto] supports-[content-visibility:auto]:[contain-intrinsic-size:auto_100lvh] R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-WEB:a4c32e15-d9fc-4f1d-b0ed-f2fbe3265ddc-1\" data-testid=\"conversation-turn-4\" data-scroll-anchor=\"false\" data-turn=\"assistant\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\u003cdiv class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv data-message-author-role=\"assistant\" data-message-id=\"c1f25a5b-7a7d-42ba-a7e4-b60921c84faf\" dir=\"auto\" data-message-model-slug=\"gpt-5-5\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" data-turn-start-message=\"true\" tabindex=\"0\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert wrap-break-word w-full light markdown-new-styling\"\u003e\n\u003cdiv class=\"relative basis-auto flex-col -mb-(--composer-overlap-px) pb-(--composer-overlap-px) [--composer-overlap-px:28px] grow flex\"\u003e\n\u003cdiv class=\"flex flex-col text-sm\"\u003e\n\u003cdiv class=\"qMYqUG_convSearchResultHighlightRoot\"\u003e\n\u003cdiv class=\"\" data-turn-id-container=\"request-WEB:141bfb42-0648-4a52-bd00-baebaa0bccaa-63\" data-is-intersecting=\"true\"\u003e\n\u003csection class=\"text-token-text-primary w-full focus:outline-none has-data-writing-block:pointer-events-none [\u0026amp;:has([data-writing-block])\u0026gt;*]:pointer-events-auto R6Vx5W_threadScrollVars scroll-mb-[calc(var(--scroll-root-safe-area-inset-bottom,0px)+var(--thread-response-height))] scroll-mt-[calc(var(--header-height)+min(200px,max(70px,20svh)))]\" dir=\"auto\" data-turn-id=\"request-WEB:141bfb42-0648-4a52-bd00-baebaa0bccaa-63\" data-turn-id-container=\"request-WEB:141bfb42-0648-4a52-bd00-baebaa0bccaa-63\" data-testid=\"conversation-turn-8\" data-scroll-anchor=\"false\" data-turn=\"assistant\"\u003e\n\u003cdiv class=\"text-base my-auto mx-auto pb-10 [--thread-content-margin:var(--thread-content-margin-xs,calc(var(--spacing)*4))] @w-sm\/main:[--thread-content-margin:var(--thread-content-margin-sm,calc(var(--spacing)*6))] @w-lg\/main:[--thread-content-margin:var(--thread-content-margin-lg,calc(var(--spacing)*16))] px-(--thread-content-margin)\"\u003e\n\u003cdiv class=\"[--thread-content-max-width:40rem] @w-lg\/main:[--thread-content-max-width:48rem] mx-auto max-w-(--thread-content-max-width) flex-1 group\/turn-messages focus-visible:outline-hidden relative flex w-full min-w-0 flex-col agent-turn\"\u003e\n\u003cdiv class=\"flex max-w-full flex-col gap-4 grow\"\u003e\n\u003cdiv data-message-author-role=\"assistant\" data-message-id=\"d681a1ab-44fc-4827-a85b-e636bb3162c3\" dir=\"auto\" data-message-model-slug=\"gpt-5-5\" class=\"min-h-8 text-message relative flex w-full flex-col items-end gap-2 text-start break-words whitespace-normal outline-none keyboard-focused:focus-ring [.text-message+\u0026amp;]:mt-1\" data-turn-start-message=\"true\" tabindex=\"0\"\u003e\n\u003cdiv class=\"flex w-full flex-col gap-1 empty:hidden\"\u003e\n\u003cdiv class=\"markdown prose dark:prose-invert wrap-break-word w-full light markdown-new-styling\"\u003e\n\u003cp data-start=\"102\" data-end=\"529\"\u003eSupport safer commercial and institutional HVAC system design with \u003cspan class=\"hover:entity-accent entity-underline inline cursor-pointer align-baseline\"\u003e\u003cspan class=\"whitespace-normal\"\u003eNational Fire Protection Association\u003c\/span\u003e\u003c\/span\u003e NFPA 90A, Standard for the Installation of Air-Conditioning and Ventilating Systems, 2021 Edition. This widely referenced standard provides current requirements for the construction and installation of air-conditioning and ventilating systems to help reduce the spread of fire, smoke, and toxic gases through HVAC systems.\u003c\/p\u003e\n\u003cp data-start=\"531\" data-end=\"916\"\u003eAir-conditioning and ventilating systems can significantly affect how fire and smoke travel throughout a building, making proper installation and system design critical for life safety and property protection. NFPA 90A helps professionals evaluate compliance, improve fire safety, and support consistent code application across a variety of commercial and institutional building types.\u003c\/p\u003e\n\u003cp data-start=\"918\" data-end=\"1170\"\u003eNFPA 90A applies to buildings over 25,000 cubic feet and buildings more than three stories in height classified as Types III, IV, and V construction. The standard also applies to buildings or structures not addressed by other applicable NFPA standards.\u003c\/p\u003e\n\u003ch2 data-section-id=\"xysmds\" data-start=\"1777\" data-end=\"1800\"\u003eWhy Choose NFPA 90A?\u003c\/h2\u003e\n\u003cp data-start=\"1802\" data-end=\"2083\"\u003eWhether you are designing a new HVAC system, reviewing construction documents, or evaluating an existing installation, NFPA 90A provides the latest guidance for helping limit the spread of fire, smoke, and related hazardous effects through air-conditioning and ventilating systems.\u003c\/p\u003e\n\u003ch3 data-section-id=\"h2cnhv\" data-start=\"2085\" data-end=\"2110\"\u003eKey Benefits Include:\u003c\/h3\u003e\n\u003cul data-start=\"2112\" data-end=\"2424\"\u003e\n\u003cli data-section-id=\"1gks85x\" data-start=\"2112\" data-end=\"2151\"\u003eCurrent HVAC fire safety requirements\u003c\/li\u003e\n\u003cli data-section-id=\"85b541\" data-start=\"2152\" data-end=\"2208\"\u003eGuidance for commercial and institutional HVAC systems\u003c\/li\u003e\n\u003cli data-section-id=\"143lit0\" data-start=\"2209\" data-end=\"2272\"\u003eAir-conditioning and ventilating system installation criteria\u003c\/li\u003e\n\u003cli data-section-id=\"ec3vdy\" data-start=\"2273\" data-end=\"2312\"\u003eFire and smoke control considerations\u003c\/li\u003e\n\u003cli data-section-id=\"qdrmkk\" data-start=\"2313\" data-end=\"2367\"\u003eSupport for code compliance and inspection processes\u003c\/li\u003e\n\u003cli data-section-id=\"1v17mcr\" data-start=\"2368\" data-end=\"2424\"\u003eImproved life safety and property protection practices\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-section-id=\"ghzcs3\" data-start=\"2426\" data-end=\"2452\"\u003e2021 Edition Highlights\u003c\/h2\u003e\n\u003cp data-start=\"2454\" data-end=\"2653\"\u003eThe 2021 edition includes a variety of editorial revisions and updates to existing language to improve usability and clarity while maintaining the most current provisions for HVAC system fire safety.\u003c\/p\u003e\n\u003cp data-start=\"2655\" data-end=\"2675\"\u003eKey updates include:\u003c\/p\u003e\n\u003cul data-start=\"2677\" data-end=\"2885\"\u003e\n\u003cli data-section-id=\"128e8of\" data-start=\"2677\" data-end=\"2720\"\u003eEditorial changes throughout the standard\u003c\/li\u003e\n\u003cli data-section-id=\"oa5fbj\" data-start=\"2721\" data-end=\"2764\"\u003eUpdated technical language and references\u003c\/li\u003e\n\u003cli data-section-id=\"1xhcprn\" data-start=\"2765\" data-end=\"2828\"\u003eImproved clarity for installation and compliance requirements\u003c\/li\u003e\n\u003cli data-section-id=\"28xhjc\" data-start=\"2829\" data-end=\"2885\"\u003eCurrent provisions to support building and life safety\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp data-start=\"2887\" data-end=\"3100\" data-is-last-node=\"\" data-is-only-node=\"\"\u003eStay up to date with the latest HVAC fire protection requirements and help ensure safer building environments with NFPA 90A, Standard for the Installation of Air-Conditioning and Ventilating Systems, 2021 Edition.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eWhy customers choose us over buying directly from publishers?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWe provide faster and more reliable service compared to ordering directly from publisher.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eSame-day shipping available on eligible orders\u003c\/li\u003e\n\u003cli\u003eTrue overnight shipping options available\u003c\/li\u003e\n\u003cli\u003eFaster order processing and delivery support\u003c\/li\u003e\n\u003cli\u003eProfessional customer assistance for code and standards orders\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWhile publisher orders may typically require 7–10 business days for delivery, we help professionals get critical fire protection standards faster when timing matters.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"mt-3 w-full empty:hidden\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/section\u003e","brand":"NFPA","offers":[{"title":"New Book \/ No Practice Exam \/ No Pre-Printed Tabs","offer_id":52429807747384,"sku":null,"price":164.99,"currency_code":"USD","in_stock":true},{"title":"New Book \/ No Practice Exam \/ Add pre-printed tabs","offer_id":52429807780152,"sku":null,"price":179.98,"currency_code":"USD","in_stock":true},{"title":"New Book \/ Add Practice Exam \/ No Pre-Printed Tabs","offer_id":52429807812920,"sku":null,"price":189.98,"currency_code":"USD","in_stock":true},{"title":"New Book \/ Add Practice Exam \/ Add 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