[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"globals_businessInfo":3,"blogPost_airflow-dampers-for-architects_entry":28,"get_announcements":92,"blogPost_airflow-dampers-for-architects_relatedPostsEntries":132,"theHeader_mainMenu":175,"theHeader_topMenu":218,"theHeader_siteTopBarCta":228},{"__typename":4,"businessInformation":5,"businessLinks":15},"businessInformationAndLink_Entry",[6],{"__typename":7,"typeHandle":8,"companyName":9,"address":10,"city":11,"zip":12,"state":13,"phone":14},"address_Entry","address","AWV","219 S. Church Street","Bowling Green","43402","OH","+1 419 865-5000",[16,22],{"__typename":17,"typeHandle":18,"twitterUrl":19,"linkedinUrl":20,"facebookUrl":21},"socialLinks_Entry","socialLinks",null,"https:\u002F\u002Fwww.linkedin.com\u002Fcompany\u002Famerican-warming-&-ventilating-a-mestek-company","https:\u002F\u002Fwww.facebook.com\u002FAWV.USA\u002F?ref=br_rs",{"__typename":23,"typeHandle":24,"termsOfUseLink":25,"termsAndConditionsLink":26,"portalLink":27},"termsLinks_Entry","termsLinks","https:\u002F\u002Fwww.mestek.com\u002FHome\u002FLegal","https:\u002F\u002Fwww.literature.mestek.com\u002Fdms\u002FAmericanWarmingVentilating\u002Ftc-2010-A(3)-2-25-10.pdf","https:\u002F\u002Fwww.salesassistant.com\u002F",{"__typename":29,"id":30,"title":31,"seoTitle":31,"seoDescription":32,"blogPostBodyContent":33,"blogPostFeaturedImage":34,"blogPostSidebarCta":38,"blogPostTags":60,"blogPostBannerImage":82,"blogPostBottomCta":85,"seomatic":86},"blogPost_Entry","13312","Airflow Dampers for Architects","What is an airflow damper? It regulates airflow through ductwork. Dampers play a crucial role in maintaining a comfortable interior environment.","\u003Cp>Interior spaces need airflow, either passively or through the building’s HVAC system. Airflow dampers provide direction and flow control for the HVAC system. Dampers don’t provide much in terms of aesthetics, like architectural grilles, but they play a crucial role in maintaining a comfortable interior environment. \u003C\u002Fp>\u003Cfigure class=\"image\">\u003Cimg style=\"aspect-ratio:800\u002F466;\" src=\"https:\u002F\u002Fawv-cdn.nyc3.cdn.digitaloceanspaces.com\u002Fblog\u002F_transforms\u002F_blogPost\u002F13422\u002FAWV-Blog-2026-Airflow-Dampers-VC2627-Building.webp\" alt=\"https:\u002F\u002Fawv-cdn.nyc3.cdn.digitaloceanspaces.com\u002Fblog\u002FAWV-Blog-2026-Airflow-Dampers-VC2627-Building.png\" width=\"800\" height=\"466\" \u002F>\u003C\u002Ffigure>\u003Cp> \u003C\u002Fp>\u003Ch2>What is an airflow damper?\u003C\u002Fh2>\u003Cp>Quick answer: An airflow damper regulates airflow through ductwork.\u003C\u002Fp>\u003Cp>A damper is any device that provides flow control, by either opening or closing. \u003C\u002Fp>\u003Cp>In HVAC, dampers open and close to regulate airflow through a section of the system. Airflow dampers will often have multiple blades in a square or rectangular frame, which all rotate on the same action. The main purpose of an airflow damper is to open ductwork for conditioned air.\u003C\u002Fp>\u003Cfigure class=\"image\">\u003Cimg style=\"aspect-ratio:800\u002F529;\" src=\"https:\u002F\u002Fawv-cdn.nyc3.cdn.digitaloceanspaces.com\u002Fblog\u002F_transforms\u002F_blogPost\u002F13425\u002FAWV-Blog-2026-Airflow-Dampers-Blueprint.webp?transformId=2866\" alt=\"https:\u002F\u002Fawv-cdn.nyc3.cdn.digitaloceanspaces.com\u002Fblog\u002FAWV-Blog-2026-Airflow-Dampers-Blueprint.png\" width=\"800\" height=\"529\" \u002F>\u003C\u002Ffigure>\u003Cp>Most projects divide their HVAC system into zones, so that the system can focus its efforts on zones that need air conditioning. When a zone needs airflow, dampers open from the HVAC unit to the zone in need while the zones that don’t need air remain closed.\u003C\u002Fp>\u003Cp>For example, let’s say you have a building with three HVAC zones. When an occupant adjusts the thermostat in zone 1, the dampers leading to zone 1 will open for airflow. The dampers in zones 2 and 3 will remain closed. This ensures that the zone in need receives the necessary airflow. HVAC zones help lower the impact of your HVAC system by focusing its efforts. Dampers help maintain these zones.\u003C\u002Fp>\u003Cp>Dampers can also help regulate air pressure in the duct by modulating between open and closed. There are also dampers that are dedicated to pressure balancing. Balanced pressure ensures each room receives even airflow and minimizes airflow issues like cold or hot spots in a room.\u003C\u002Fp>\u003Cp> \u003C\u002Fp>\u003Ch2>Where do airflow dampers go?\u003C\u002Fh2>\u003Cp>Quick answer: Anywhere you have ducts in your building, you will need airflow dampers.\u003C\u002Fp>\u003Cp>Dampers are commonly used in HVAC ductwork, specifically at ducts that join zones of the HVAC system. Occupants will only see the ductwork. You can choose whether your dampers are inside the duct or mounted to the face of the duct. In both cases, the damper is installed so that air will flow through the free space between its open blades. \u003C\u002Fp>\u003Cfigure class=\"image\">\u003Cimg style=\"aspect-ratio:800\u002F590;\" src=\"https:\u002F\u002Fawv-cdn.nyc3.cdn.digitaloceanspaces.com\u002Fblog\u002F_transforms\u002F_blogPost\u002F13421\u002FAWV-Blog-2026-Airflow-Dampers-VC26-Duct.webp?transformId=2868\" alt=\"https:\u002F\u002Fawv-cdn.nyc3.cdn.digitaloceanspaces.com\u002Fblog\u002FAWV-Blog-2026-Airflow-Dampers-VC26-Duct.png\" width=\"800\" height=\"590\" \u002F>\u003C\u002Ffigure>\u003Cp>They can also be installed in wall openings to provide shut off between connected spaces. If you have a garage space that could use some fresh air, then consider adding a damper to one of the walls. Occupants can open this damper for passive ventilation and close it when the space is not in use.\u003C\u002Fp>\u003Cp> \u003C\u002Fp>\u003Ch2>How do airflow dampers work?\u003C\u002Fh2>\u003Cp>Quick answer: Airflow dampers open and close to direct the flow of air through ductwork. \u003C\u002Fp>\u003Cp>Airflow dampers provide control over the airstream. They achieve this by rotating their multiple blades between fully open and fully closed. \u003C\u002Fp>\u003Cfigure class=\"image\">\u003Cimg style=\"aspect-ratio:800\u002F656;\" src=\"https:\u002F\u002Fawv-cdn.nyc3.cdn.digitaloceanspaces.com\u002Fblog\u002F_transforms\u002F_blogPost\u002F13420\u002FAWV-Blog-2026-Airflow-Dampers-Open-and-Closed.webp\" alt=\"https:\u002F\u002Fawv-cdn.nyc3.cdn.digitaloceanspaces.com\u002Fblog\u002FAWV-Blog-2026-Airflow-Dampers-Open-and-Closed.png\" width=\"800\" height=\"656\" \u002F>\u003C\u002Ffigure>\u003Cp>The blades are spaced across the damper’s face, so that blades overlap with their neighbors when the damper closes. Blade seals can provide tighter closure to minimize air leakage between zones. Actuators provide the means of rotation. When the damper needs to close, the actuator will rotate the damper’s driving blade to a near-zero-degree angle. Linkage between blades will translate the rotation to all the damper’s blades.\u003C\u002Fp>\u003Cp>In modern buildings, most dampers use electric actuators to control blade rotation. Electric actuators can connect to a central computer, which governs when dampers open and close. This ensures that all dampers open for the zone in need of airflow.\u003C\u002Fp>\u003Cp> \u003C\u002Fp>\u003Ch2>How do you design airflow dampers?\u003C\u002Fh2>\u003Cp>Quick answer: Make sure your dampers will fit and consider your options. AWV can help with the rest. \u003C\u002Fp>\u003Cp>AWV has several blogs on designing airflow dampers for HVAC. Our Dampers 100 blogs provide more information on design considerations, such as performance metrics and airflow standards.\u003C\u002Fp>\u003Cul>\u003Cli data-list-item-id=\"e69d9fe9dd855721e7893ccac4bc7ce76\">\u003Ca target=\"_blank\" href=\"https:\u002F\u002Fawv.com\u002Fblog\u002Fdamper-101\" rel=\"noreferrer noopener\">Dampers 101\u003C\u002Fa>\u003C\u002Fli>\u003Cli data-list-item-id=\"ede0ce25512c9d14c63e8f47a484eba98\">\u003Ca target=\"_blank\" href=\"https:\u002F\u002Fawv.com\u002Fblog\u002Fdamper-102-efficient-airflow\" rel=\"noreferrer noopener\">Dampers 102\u003C\u002Fa>\u003C\u002Fli>\u003Cli data-list-item-id=\"ef133def9d771a3930aa0746c68cf4d4f\">\u003Ca target=\"_blank\" href=\"https:\u002F\u002Fawv.com\u002Fblog\u002Fdampers-103-designing-airflow-dampers\" rel=\"noreferrer noopener\">Dampers 103\u003C\u002Fa>\u003C\u002Fli>\u003Cli data-list-item-id=\"e6fa08e56a10a6da26d123a65baaa834b\">\u003Ca target=\"_blank\" href=\"https:\u002F\u002Fawv.com\u002Fblog\u002Fdamper-design-104\" rel=\"noreferrer noopener\">Dampers 104\u003C\u002Fa>\u003C\u002Fli>\u003C\u002Ful>\u003Cp>\u003Ca target=\"_blank\" href=\"https:\u002F\u002Fawv.com\u002Fblog\" rel=\"noreferrer noopener\">Browse the AWV blog\u003C\u002Fa> for these and more articles on louver and damper design.  Below are a few pointers to help get you started.\u003C\u002Fp>\u003Cfigure class=\"image\">\u003Cimg style=\"aspect-ratio:800\u002F544;\" src=\"https:\u002F\u002Fawv-cdn.nyc3.cdn.digitaloceanspaces.com\u002Fblog\u002F_transforms\u002F_blogPost\u002F13423\u002FAWV-Blog-2026-Airflow-Dampers-VC2627-Stats.webp?transformId=2870\" alt=\"https:\u002F\u002Fawv-cdn.nyc3.cdn.digitaloceanspaces.com\u002Fblog\u002FAWV-Blog-2026-Airflow-Dampers-VC2627-Stats.png\" width=\"800\" height=\"544\" \u002F>\u003Cfigcaption>The VC-26\u002F27 is equipped with airfoil blades to minimize pressure drop when fully open.\u003C\u002Ffigcaption>\u003C\u002Ffigure>\u003Cul>\u003Cli data-list-item-id=\"e17231c45ef5df2a93aeb6601e3b1d29f\">Make sure each damper fits: knowing the dimensions of your ducts and openings will help you choose the right dimensions for your dampers. Note that dampers installed inside the duct will have their dimensions slightly reduced, to account for small changes in duct’s dimensions from heat expansion.\u003C\u002Fli>\u003Cli data-list-item-id=\"e288296dbfc6f1552be419a5d42dffcf1\">Consider adding seals: blade and jamb seals aren’t always a standard feature. Seals provide tight closure and minimize air leakage, which can affect the HVAC system’s efficiency.\u003C\u002Fli>\u003Cli data-list-item-id=\"e6f39408a869f2eac7b417176dc026acf\">Consider airfoil blades: airfoil blades are smooth and round, minimizing drag when air flows through the damper. These provide the most efficient airflow while the damper is open.\u003C\u002Fli>\u003Cli data-list-item-id=\"e48f3daa58621d7b9a9eece90f0b8f49c\">Use electric actuators: electric actuators provide full automation of your dampers. When tied to a central computer, each damper can open and close as needed.\u003C\u002Fli>\u003C\u002Ful>\u003Cp>Dampers may not be an aesthetic option, but they are important for your building. Think about where you might need dampers in your next interior space. \u003C\u002Fp>\u003Cfigure class=\"image\">\u003Cimg style=\"aspect-ratio:800\u002F429;\" src=\"https:\u002F\u002Fawv-cdn.nyc3.cdn.digitaloceanspaces.com\u002Fblog\u002F_transforms\u002F_blogPost\u002F13419\u002FAWV-Blog-2026-Airflow-Dampers-Dampers-Office.webp?transformId=2871\" alt=\"https:\u002F\u002Fawv-cdn.nyc3.cdn.digitaloceanspaces.com\u002Fblog\u002FAWV-Blog-2026-Airflow-Dampers-Dampers-Office.png\" width=\"800\" height=\"429\" \u002F>\u003C\u002Ffigure>\u003Cp>Not sure where to start? AWV can help. We offer a wide range of architectural and HVAC products, including airflow dampers. \u003Ca target=\"_blank\" href=\"https:\u002F\u002Fawv.com\u002Fcontact\" rel=\"noreferrer noopener\">Contact us today\u003C\u002Fa> and tell us about your upcoming project.\u003C\u002Fp>",[35],{"__typename":36,"url":37},"blog_Asset","https:\u002F\u002Fawv-cdn.nyc3.cdn.digitaloceanspaces.com\u002Fblog\u002FAWV-Blog-2026-Airflow-Dampers-Cover.png",[39],{"__typename":40,"id":41,"ctaBackgroundImage":42,"ctaButtonText":43,"ctaFormHandle":44,"ctaHeadline":45,"ctaIsFeaturedImageHidden":46,"ctaThankYouRedirectPath":47,"ctaFeaturedImage":48},"callToActions_Entry","5221",[],"Free Damper Guide","damperSelectionGuideInlineForm","SELECT THE RIGHT DAMPER FOR YOUR APPLICATION",true,"\u002Fthank-you?source=damper_guide",[49],{"__typename":50,"ctaFeaturedImageOptimizedImages":51},"callToActions_Asset",{"src":52,"srcset":53,"srcWebp":54,"srcsetWebp":55,"maxSrcsetWidth":56,"placeholderImage":57,"placeholderBox":58,"placeholderSilhouette":59},"https:\u002F\u002Fawv-cdn.nyc3.cdn.digitaloceanspaces.com\u002Fcall-to-actions\u002F_transforms\u002F_200x186_crop_center-center_60_line\u002Fawv_solutionsbydamper_offer.png","https:\u002F\u002Fawv-cdn.nyc3.cdn.digitaloceanspaces.com\u002Fcall-to-actions\u002F_transforms\u002F_200x186_crop_center-center_60_line\u002Fawv_solutionsbydamper_offer.png 200w, https:\u002F\u002Fawv-cdn.nyc3.cdn.digitaloceanspaces.com\u002Fcall-to-actions\u002F_transforms\u002F_600x559_crop_center-center_60_line\u002Fawv_solutionsbydamper_offer.png 600w","https:\u002F\u002Fawv-cdn.nyc3.cdn.digitaloceanspaces.com\u002Fcall-to-actions\u002F_transforms\u002F_200x186_crop_center-center_60_line\u002Fawv_solutionsbydamper_offer.png.webp","https:\u002F\u002Fawv-cdn.nyc3.cdn.digitaloceanspaces.com\u002Fcall-to-actions\u002F_transforms\u002F_200x186_crop_center-center_60_line\u002Fawv_solutionsbydamper_offer.png.webp 200w, https:\u002F\u002Fawv-cdn.nyc3.cdn.digitaloceanspaces.com\u002Fcall-to-actions\u002F_transforms\u002F_600x559_crop_center-center_60_line\u002Fawv_solutionsbydamper_offer.png.webp 600w",600,"data:image\u002Fjpeg;base64,%2F9j%2F4AAQSkZJRgABAQIAOwA7AAD%2F2wBDABALDA4MChAODQ4SERATGCgaGBYWGDEjJR0oOjM9PDkzODdASFxOQERXRTc4UG1RV19iZ2hnPk1xeXBkeFxlZ2P%2F2wBDARESEhgVGC8aGi9jQjhCY2NjY2NjY2NjY2NjY2NjY2NjY2NjY2NjY2NjY2NjY2NjY2NjY2NjY2NjY2NjY2NjY2P%2FwAARCAAOABADASIAAhEBAxEB%2F8QAFgABAQEAAAAAAAAAAAAAAAAABQID%2F8QAIBAAAgEEAgMBAAAAAAAAAAAAAQIDAAQFERIiIUFxkf%2FEABUBAQEAAAAAAAAAAAAAAAAAAAAB%2F8QAFhEBAQEAAAAAAAAAAAAAAAAAABFB%2F9oADAMBAAIRAxEAPwAq0aM2EVwIbFgU7K0I2GFAZBC0pn4onM%2BVQaA%2BVrjpyIjH6VuW6rI5CCdVjSA9ARsnQ%2FBSrj%2F%2F2Q%3D%3D","data:image\u002Fsvg+xml,%3Csvg%20xmlns=%27http:\u002F\u002Fwww.w3.org\u002F2000\u002Fsvg%27%20width=%27600%27%20height=%27559%27%20style=%27background:%23bbafa7%27%20\u002F%3E","data:image\u002Fsvg+xml,%3Csvg%20xmlns=%27http:\u002F\u002Fwww.w3.org\u002F2000\u002Fsvg%27%20width=%271%27%20height=%271%27%20style=%27background:%23CCC%27%20\u002F%3E",[61,66,70,74,78],{"__typename":62,"id":63,"tagName":19,"slug":64,"title":65},"blogPostsTags_Tag","5644","dampers","Dampers",{"__typename":62,"id":67,"tagName":19,"slug":68,"title":69},"10708","airflow","Airflow",{"__typename":62,"id":71,"tagName":19,"slug":72,"title":73},"11305","air-pressure","Air pressure",{"__typename":62,"id":75,"tagName":19,"slug":76,"title":77},"11324","architecture","Architecture",{"__typename":62,"id":79,"tagName":19,"slug":80,"title":81},"10724","hvac-design","HVAC Design",[83],{"__typename":36,"url":84},"https:\u002F\u002Fawv-cdn.nyc3.cdn.digitaloceanspaces.com\u002Fblog\u002FAWV-Blog-2026-Airflow-Dampers-Banner.png",[],{"metaJsonLdContainer":87,"metaLinkContainer":88,"metaScriptContainer":89,"metaTagContainer":90,"metaTitleContainer":91},"{\"mainEntityOfPage\":{\"@context\":\"https:\\\u002F\\\u002Fschema.org\",\"@type\":\"CreativeWork\",\"author\":{\"@id\":\"#identity\"},\"copyrightHolder\":{\"@id\":\"#identity\"},\"copyrightYear\":\"2026\",\"creator\":{\"@id\":\"#creator\"},\"dateCreated\":\"2026-08-05T16:59:13-04:00\",\"dateModified\":\"2026-11-09T17:22:29-05:00\",\"datePublished\":\"2026-11-11T00:00:00-05:00\",\"description\":\"What is an airflow damper? 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