{"product_id":"2021-uniform-mechanical-code","title":"2021 Uniform Mechanical Code","description":"\u003ch1\u003e\u003cspan\u003e2021 Uniform Mechanical Code (UMC)\u003c\/span\u003e\u003c\/h1\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003e2021 Uniform Mechanical Code (UMC®)\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e provides comprehensive requirements for the installation, inspection, and maintenance of \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eheating, ventilation, cooling, and refrigeration systems\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e. Developed through the \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eANSI Consensus Process\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e and designated as an American National Standard by the American National Standards Institute (ANSI), the 2021 UMC reflects current practices, technologies, and requirements in the mechanical industry.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe 2021 edition is particularly significant for its provisions addressing \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003elow-flammability A2L and B2L refrigerants\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, including refrigerants with lower Global Warming Potential (GWP). The code incorporates contributions from a broad range of professionals and stakeholders across the built environment.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cspan\u003eKey Updates in the 2021 Uniform Mechanical Code\u003c\/span\u003e\u003c\/h2\u003e\n\u003cp class=\"isSelectedEnd\"\u003e\u003cspan\u003eThe 2021 UMC includes numerous updates and new requirements, including:\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\u003cstrong\u003e\u003cspan\u003eNew Appendix F – Geothermal Energy Systems\u003c\/span\u003e\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli\u003e\u003cspan\u003eNew guard and rail requirements for equipment and appliance installations on roofs\u003c\/span\u003e\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eUpdated ventilation requirements for \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003etransient and nontransient occupancies\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eNew residential ventilation requirements addressing \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eindoor air quality\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eRevised requirements for \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eair ducts\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e, including factory-made air ducts and dampers\u003c\/span\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eNew provisions for \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003efactory-built grease ducts\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eUpdated refrigeration system requirements, including \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003epressure-limiting devices and hydrostatic expansion\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eRevised sizing requirements for \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003enatural gas and propane piping systems\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eUpdated pressure-rating requirements for \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003ehydronic piping applications\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eNew requirements for \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003efuel gas piping appliance shutoff valves, test pressure, and overpressure protection\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eNew tube fastener provisions for \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eradiant heating and cooling systems\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eNew requirements for \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003eresidential compressed natural gas (CNG) fueling systems\u003c\/span\u003e\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cspan\u003eNew fire-extinguishing equipment and \u003c\/span\u003e\u003cstrong\u003e\u003cspan\u003ecarbon monoxide detection requirements\u003c\/span\u003e\u003c\/strong\u003e\u003cspan\u003e for exhaust systems\u003c\/span\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"ACCA","offers":[{"title":"New Book - 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