[[HVACR]] - Calculating CFM: https://twitter.com/joeyfox85/status/1542959661829312512?s=21&t=nz1i9eqSUiQUNf5eM8yYqQ - Calculating CO2: https://twitter.com/joeyfox85/status/1534335303607017473 Spreadsheet calculator: https://docs.google.com/spreadsheets/d/1AjFzhqM_NILYvZjgE8n0CvGZzYh04JpF_DO0phrOcFw/edit#gid=0 Website calculator: https://forhealth.org/tools/co2-calculator/ https://www.ashrae.org/technical-resources/standards-and-guidelines See standard 62.1-2019