{"id":6965,"date":"2026-05-05T09:01:57","date_gmt":"2026-05-05T09:01:57","guid":{"rendered":"https:\/\/symphonyventicool.com\/blogs\/?p=6965"},"modified":"2026-05-05T09:55:10","modified_gmt":"2026-05-05T09:55:10","slug":"central-air-cooling-system-layout-how-to-design-duct-routing-for-maximum-uniformity-in-large-facilities","status":"publish","type":"post","link":"https:\/\/symphonyventicool.com\/blogs\/central-air-cooling-system-layout-how-to-design-duct-routing-for-maximum-uniformity-in-large-facilities\/","title":{"rendered":"Central Air Cooling System Layout: How to Design Duct Routing for Maximum Uniformity in Large Facilities"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-post\" data-elementor-id=\"6965\" class=\"elementor elementor-6965\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6616d99 e-flex e-con-boxed e-con e-parent\" data-id=\"6616d99\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6aa113b elementor-widget elementor-widget-text-editor\" data-id=\"6aa113b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">A centralised air cooling system is only as good as its duct design. A cooling system, poorly connected to a badly routed duct network, will deliver uneven temperatures across a facility &#8211; some zones sweltering while others are adequately cooled. The design of the duct layout is the engineering work that determines whether a central cooling system delivers its designed performance.<\/span><\/p><p><span style=\"font-weight: 400;\">This guide explains the principles of duct routing design for maximum temperature uniformity in large industrial and commercial facilities &#8211; the technical foundation behind every centralised Air Handling System installation.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-96c1b4a e-flex e-con-boxed e-con e-parent\" data-id=\"96c1b4a\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-3778ab4 e-con-full cta_container e-flex e-con e-child\" data-id=\"3778ab4\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-a3d77df cta_text elementor-widget elementor-widget-heading\" data-id=\"a3d77df\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<span class=\"elementor-heading-title elementor-size-default\">Quick Response Guaranteed <\/span>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-95a0df9 elementor-align-center elementor-widget__width-initial elementor-widget elementor-widget-button\" data-id=\"95a0df9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"mailto:industrial@symphonylimited.com\" target=\"_blank\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Email Us Now!<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-a065557 e-flex e-con-boxed e-con e-parent\" data-id=\"a065557\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e9cb45d elementor-widget elementor-widget-heading\" data-id=\"e9cb45d\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_81 counter-hierarchy ez-toc-counter ez-toc-custom ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/symphonyventicool.com\/blogs\/central-air-cooling-system-layout-how-to-design-duct-routing-for-maximum-uniformity-in-large-facilities\/#The_Core_Principle_Balanced_Airflow_Distribution\" >The Core Principle: Balanced Airflow Distribution<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/symphonyventicool.com\/blogs\/central-air-cooling-system-layout-how-to-design-duct-routing-for-maximum-uniformity-in-large-facilities\/#Duct_Routing_Approaches_Trunk-and-Branch_vs_Ring_Main\" >Duct Routing Approaches: Trunk-and-Branch vs Ring Main<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/symphonyventicool.com\/blogs\/central-air-cooling-system-layout-how-to-design-duct-routing-for-maximum-uniformity-in-large-facilities\/#Discharge_Grille_Placement_Where_the_Air_Meets_the_Workers\" >Discharge Grille Placement: Where the Air Meets the Workers<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/symphonyventicool.com\/blogs\/central-air-cooling-system-layout-how-to-design-duct-routing-for-maximum-uniformity-in-large-facilities\/#AHU_Positioning_Where_the_Central_Cooling_System_Lives\" >AHU Positioning: Where the Central Cooling System Lives<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/symphonyventicool.com\/blogs\/central-air-cooling-system-layout-how-to-design-duct-routing-for-maximum-uniformity-in-large-facilities\/#Frequently_Asked_Questions\" >Frequently Asked Questions<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"elementor-heading-title elementor-size-default\"><span class=\"ez-toc-section\" id=\"The_Core_Principle_Balanced_Airflow_Distribution\"><\/span>The Core Principle: Balanced Airflow Distribution\n<span class=\"ez-toc-section-end\"><\/span><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-7bc4fde elementor-widget elementor-widget-text-editor\" data-id=\"7bc4fde\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">The objective of duct layout design is to deliver the designed CFM volume to every discharge grille in the system, regardless of the distance from the AHU. This is called airflow balance &#8211; and achieving it requires careful management of duct size, length, bends, and branch splits.<\/span><\/p><p><span style=\"font-weight: 400;\">Air, like water, takes the path of least resistance. Without deliberate design, more air will flow to the nearest, shortest duct branches and less to the longer, more distant ones. The result is a central air cooling system that cools well near the AHU and poorly at the far end of the facility &#8211; exactly the opposite of what &#8220;centralised&#8221; cooling should mean.<\/span><\/p><p><span style=\"font-weight: 400;\">Balanced distribution is achieved through: correct duct sizing (larger ducts for longer runs), dampers at branch junctions to adjust flow resistance, appropriately sized discharge grilles, and commissioning with airflow measurement and damper adjustment at every point.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-bd0b4ed e-flex e-con-boxed e-con e-parent\" data-id=\"bd0b4ed\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-3fdab8b elementor-widget elementor-widget-heading\" data-id=\"3fdab8b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\"><span class=\"ez-toc-section\" id=\"Duct_Routing_Approaches_Trunk-and-Branch_vs_Ring_Main\"><\/span>Duct Routing Approaches: Trunk-and-Branch vs Ring Main<span class=\"ez-toc-section-end\"><\/span><\/h2>\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-58e3f03 e-flex e-con-boxed e-con e-parent\" data-id=\"58e3f03\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-c412e70 elementor-widget elementor-widget-text-editor\" data-id=\"c412e70\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">Two main duct routing architectures are used in industrial Air Handling Systems:<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-e5f8064 e-flex e-con-boxed e-con e-parent\" data-id=\"e5f8064\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-1de44e4 e-con-full e-flex e-con e-child\" data-id=\"1de44e4\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e6e0869 elementor-widget elementor-widget-text-editor\" data-id=\"e6e0869\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">The trunk-and-branch approach uses a large main duct (the trunk) running the length of the facility, with smaller branch ducts splitting off at regular intervals to reach discharge grilles. This is the most common design for rectangular industrial buildings and is straightforward to install and balance.<\/span><\/p><p><span style=\"font-weight: 400;\">The ring main approach uses a duct loop that runs around the perimeter of the facility, with drop ducts descending to discharge grilles at regular intervals along the loop. This approach provides more inherently even pressure distribution and is preferred for very large facilities or those with irregular shapes where a single trunk creates excessively long branch runs.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-bc35ef0 e-con-full e-flex e-con e-child\" data-id=\"bc35ef0\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-66088b4 elementor-widget elementor-widget-image\" data-id=\"66088b4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"825\" height=\"688\" src=\"https:\/\/symphonyventicool.com\/blogs\/wp-content\/uploads\/2026\/05\/Duct-Routing-Trunk-and-Branch-Ring-Main-Approaches.jpg\" class=\"attachment-large size-large wp-image-7002\" alt=\"\" srcset=\"https:\/\/symphonyventicool.com\/blogs\/wp-content\/uploads\/2026\/05\/Duct-Routing-Trunk-and-Branch-Ring-Main-Approaches.jpg 825w, https:\/\/symphonyventicool.com\/blogs\/wp-content\/uploads\/2026\/05\/Duct-Routing-Trunk-and-Branch-Ring-Main-Approaches-768x640.jpg 768w, https:\/\/symphonyventicool.com\/blogs\/wp-content\/uploads\/2026\/05\/Duct-Routing-Trunk-and-Branch-Ring-Main-Approaches-150x125.jpg 150w\" sizes=\"(max-width: 825px) 100vw, 825px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-996f0ce e-flex e-con-boxed e-con e-parent\" data-id=\"996f0ce\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-7827d2e elementor-widget elementor-widget-text-editor\" data-id=\"7827d2e\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">For facilities with multiple wings, mezzanines, or separate processing zones, a hybrid approach is used &#8211; multiple trunk-and-branch sub-systems fed from a centralised AHU manifold.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-c5c20c5 e-flex e-con-boxed e-con e-parent\" data-id=\"c5c20c5\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-8da8dac elementor-widget elementor-widget-heading\" data-id=\"8da8dac\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\"><span class=\"ez-toc-section\" id=\"Discharge_Grille_Placement_Where_the_Air_Meets_the_Workers\"><\/span>Discharge Grille Placement: Where the Air Meets the Workers<span class=\"ez-toc-section-end\"><\/span><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3d751f8 elementor-widget elementor-widget-text-editor\" data-id=\"3d751f8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">The position and angle of discharge grilles determines where cooled air is directed and how it mixes with the room air. Poor grille placement is one of the most common causes of uneven cooling in industrial Air Handling Systems.<\/span><\/p><p><span style=\"font-weight: 400;\">Grilles should be positioned to direct air across the occupied zone &#8211; not into walls, not directly downward from ceiling height, and not aimed at machinery in ways that could interfere with processes. For factories with benches or workstations arranged in rows, discharge grilles positioned along the centreline of the row and aimed along the row direction provide the most effective coverage.<\/span><\/p><p><span style=\"font-weight: 400;\">The spacing between discharge grilles depends on the throw distance of each grille &#8211; the distance over which it maintains adequate air velocity. For a factory with 18-foot ceilings, a grille with 12-metre throw distance should be placed at 10\u201311 metre intervals to ensure overlapping coverage without gaps.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-6dd0616 e-flex e-con-boxed e-con e-parent\" data-id=\"6dd0616\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-ff9e6ce e-con-full cta_container e-flex e-con e-child\" data-id=\"ff9e6ce\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-877a2c0 cta_text elementor-widget elementor-widget-heading\" data-id=\"877a2c0\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<span class=\"elementor-heading-title elementor-size-default\">We\u2019re Just a Call Away<\/span>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-a3feb1a elementor-align-center elementor-widget__width-initial elementor-widget elementor-widget-button\" data-id=\"a3feb1a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/symphonyventicool.com\/contact.php\" target=\"_blank\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Contact Now!<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-3d8dca4 e-flex e-con-boxed e-con e-parent\" data-id=\"3d8dca4\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-d904582 elementor-widget elementor-widget-heading\" data-id=\"d904582\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\"><span class=\"ez-toc-section\" id=\"AHU_Positioning_Where_the_Central_Cooling_System_Lives\"><\/span>AHU Positioning: Where the Central Cooling System Lives<span class=\"ez-toc-section-end\"><\/span><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-ecaafaa elementor-widget elementor-widget-text-editor\" data-id=\"ecaafaa\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p><span style=\"font-weight: 400;\">The AHU position determines the maximum duct run length and, therefore, the complexity of the duct network. In large facilities, positioning AHU units at the geometric centre of their served zone &#8211; rather than at the perimeter &#8211; minimises maximum duct run length and improves balance.<\/span><\/p><p><span style=\"font-weight: 400;\">For facilities with rooftop mounting capability, roof-mounted AHU units feed vertical drop ducts that enter the building near the centre, dramatically reducing horizontal duct runs and simplifying installation. For facilities where roof mounting is not feasible, external wall mounting with penetration through the building shell is used.<\/span><\/p><p><span style=\"font-weight: 400;\">Multiple AHU units in a large central cooling system should be positioned to serve distinct, non-overlapping zones &#8211; preventing interference between duct networks and allowing zone-by-zone control.<\/span><\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-848d149 e-flex e-con-boxed e-con e-parent\" data-id=\"848d149\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-01597db elementor-widget elementor-widget-heading\" data-id=\"01597db\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\"><span class=\"ez-toc-section\" id=\"Frequently_Asked_Questions\"><\/span>Frequently Asked Questions\n<span class=\"ez-toc-section-end\"><\/span><\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5507651 elementor-widget elementor-widget-shortcode\" data-id=\"5507651\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"shortcode.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-shortcode\">        <style type=\"text\/css\">\n        \t        \t.thfaqf-tab h3.thfaqf-tablinks-6967.active {\n\t\t\t    background-color: #f5f5f5!important;\n\t\t\t    color: #f5f5f5!important;\n\t\t\t}\n\t\t\t.thfaqf-tab h3.thfaqf-tablinks-6967:hover {\n\t\t\t  \tbackground-color: #f5f5f5!important;\n\t\t\t}\n\t\t    .thfaqf-faq-item-6967.thfaqf-active .thfaqf-title-text{\n\t\t\t\tcolor: #ffffff!important;\n\t\t\t}\n          \n        <\/style>\n       \t\t<div class=\"thfaqf-faq-list thfaqf-theme-wrapper-hello-elementor\">\n            <h3 class=\"thfaqf-faq-list-title\">Central Air Cooling System Layout: How to Design Duct Routing for Maximum Uniformity in Large Facilities<\/h3><div class=\"faq-item-wrapper\">\t\t<div id=\"thfaqf-faq-item-6967_0\" class=\"thfaqf-faq-item  thfaqf-faq-item-6967    thfaqf-active thfaqf-post-id-6967 thfaqf-count-dsply-setngs\" style=\"border-radius: 6px;\" >\n\t\t\t<div data-active_color=\"#ffffff\" class=\"thfaqf-faq-item-title\" style=\"border-width: 1px; border-style: solid; margin-bottom: -1px; background-color: #f3f3f3; border-color: #f3f3f3;\">\n \t\t\t\t<h4>\n \t\t\t\t\t \t\t\t\t<span class=\"thfaq-marker thfaqf-toggle-icon\" style=\" color: #007dcc;\"><\/span>\n \t\t\t\t\t<span class=\"thfaqf-title-text \" style=\" color: #000000;\" >How do I know if my existing central cooling system has poor duct design?<\/span>\n \t\t\t\t<\/h4>\t\n\t\t\t<\/div>\n\t\t\t<div class=\"thfaqf-faq-item-content\" style=\"border-width: 1px; border-style: solid; background-color: #ffffff; border-color: #ffffff; color: #000000;\" >\n\t\t\t\t<p><span style=\"font-weight: 400\">Signs of poor duct design include: significant temperature variation between areas of the facility (more than 3\u20134\u00b0C between the coolest and warmest zones), high noise from discharge grilles (indicating air velocity problems), low air velocity at distant discharge points, and AHU units running continuously at maximum capacity without achieving designed temperatures. Symphony Venti-Cool can audit existing systems and recommend redesign.<\/span><\/p>\n\t\t\t\t<div class=\"thfaq-enable-comment-box thfaqf-hide\"> <p>\t\t<div class=\"thfaqf-comment-wrapper\">\n\t\t\t<form form method=\"post\" class=\"thfaqf-post-comment\">\n\t\t\t\t<p><input class=\"thfaqf-comment-box thfaqf-uname\" type=\"text\" placeholder=\"Name...\"name=\"user_name\"\/><\/p>\n\t\t\t\t<p class=\"threq-name\"><\/p>\n\t\t\t\t<input type=\"hidden\" name=\"action\" value=\"thfaqf_comment\">\n\t\t\t\t<input type=\"hidden\" name=\"faq_id\" value=\"6967\">\n\t\t\t\t<input type=\"hidden\" name=\"faq_index\"value=\"0\">\n\t\t\t\t<p><textarea placeholder=\"Add a Comment...\"name=\"user_msg\" class=\"thfaqf-comment-box thfaqf-ucomment\"><\/textarea><\/p>\n\t\t\t\t<p class=\"threq-comment\"><\/p>\n\t\t\t\t<input type=\"hidden\" name=\"wp_thfaqc_nonce\" value=\"522defe169\"\/>\n\t\t    \t<p><button type=\"submit\" name=\"thfaqf_comment_submt\" class=\"thfaqf-submt-cmmt button primary is-xsmall\" onclick=\"submitFaqfComment(this)\">Send<\/button><\/p><p class=\"thfaqf-comment-validetion\"><\/p>\n\t\t    <\/form>\t\n\n\t\t    \t\t<\/div>\n\t\t <\/p><\/div>\n\t\t\t<\/div>\n\t\t\t<div class=\"log\"><\/div>\n\t\t<\/div>\n \t\t\t\t<div id=\"thfaqf-faq-item-6967_1\" class=\"thfaqf-faq-item  thfaqf-faq-item-6967    thfaqf-post-id-6967 thfaqf-count-dsply-setngs\" style=\"border-radius: 6px;\" >\n\t\t\t<div data-active_color=\"#ffffff\" class=\"thfaqf-faq-item-title\" style=\"border-width: 1px; border-style: solid; margin-bottom: -1px; background-color: #f3f3f3; border-color: #f3f3f3;\">\n \t\t\t\t<h4>\n \t\t\t\t\t \t\t\t\t<span class=\"thfaq-marker thfaqf-toggle-icon\" style=\" color: #007dcc;\"><\/span>\n \t\t\t\t\t<span class=\"thfaqf-title-text \" style=\" color: #000000;\" >What duct material is recommended for industrial central cooling systems?<\/span>\n \t\t\t\t<\/h4>\t\n\t\t\t<\/div>\n\t\t\t<div class=\"thfaqf-faq-item-content\" style=\"border-width: 1px; border-style: solid; background-color: #ffffff; border-color: #ffffff; color: #000000;\" >\n\t\t\t\t<p><span style=\"font-weight: 400\">Galvanised steel sheet metal is the standard duct material for industrial Air Handling Systems in India - it is durable, dimensionally stable, and resistant to the humidity and temperature fluctuations of industrial environments. Insulation is recommended for duct runs passing through uncooled zones or exposed to direct sunlight to prevent heat gain in the duct before air reaches the discharge grille.<\/span><\/p>\n\t\t\t\t<div class=\"thfaq-enable-comment-box thfaqf-hide\"> <p>\t\t<div class=\"thfaqf-comment-wrapper\">\n\t\t\t<form form method=\"post\" class=\"thfaqf-post-comment\">\n\t\t\t\t<p><input class=\"thfaqf-comment-box thfaqf-uname\" type=\"text\" placeholder=\"Name...\"name=\"user_name\"\/><\/p>\n\t\t\t\t<p class=\"threq-name\"><\/p>\n\t\t\t\t<input type=\"hidden\" name=\"action\" value=\"thfaqf_comment\">\n\t\t\t\t<input type=\"hidden\" name=\"faq_id\" value=\"6967\">\n\t\t\t\t<input type=\"hidden\" name=\"faq_index\"value=\"1\">\n\t\t\t\t<p><textarea placeholder=\"Add a Comment...\"name=\"user_msg\" class=\"thfaqf-comment-box thfaqf-ucomment\"><\/textarea><\/p>\n\t\t\t\t<p class=\"threq-comment\"><\/p>\n\t\t\t\t<input type=\"hidden\" name=\"wp_thfaqc_nonce\" value=\"522defe169\"\/>\n\t\t    \t<p><button type=\"submit\" name=\"thfaqf_comment_submt\" class=\"thfaqf-submt-cmmt button primary is-xsmall\" onclick=\"submitFaqfComment(this)\">Send<\/button><\/p><p class=\"thfaqf-comment-validetion\"><\/p>\n\t\t    <\/form>\t\n\n\t\t    \t\t<\/div>\n\t\t <\/p><\/div>\n\t\t\t<\/div>\n\t\t\t<div class=\"log\"><\/div>\n\t\t<\/div>\n \t\t\t\t<div id=\"thfaqf-faq-item-6967_2\" class=\"thfaqf-faq-item  thfaqf-faq-item-6967    thfaqf-post-id-6967 thfaqf-count-dsply-setngs\" style=\"border-radius: 6px;\" >\n\t\t\t<div data-active_color=\"#ffffff\" class=\"thfaqf-faq-item-title\" style=\"border-width: 1px; border-style: solid; margin-bottom: -1px; background-color: #f3f3f3; border-color: #f3f3f3;\">\n \t\t\t\t<h4>\n \t\t\t\t\t \t\t\t\t<span class=\"thfaq-marker thfaqf-toggle-icon\" style=\" color: #007dcc;\"><\/span>\n \t\t\t\t\t<span class=\"thfaqf-title-text \" style=\" color: #000000;\" >How long does a duct routing design take to complete for a large facility?<\/span>\n \t\t\t\t<\/h4>\t\n\t\t\t<\/div>\n\t\t\t<div class=\"thfaqf-faq-item-content\" style=\"border-width: 1px; border-style: solid; background-color: #ffffff; border-color: #ffffff; color: #000000;\" >\n\t\t\t\t<p><span style=\"font-weight: 400\">A full duct routing design for a facility of 20,000\u201350,000 sq ft typically takes 5\u201310 working days from receipt of floor plans and zone mapping data. For very large or complex facilities - multi-bay warehouses, multi-wing factories - the design process may take 2\u20133 weeks. Symphony Venti-Cool's engineering team provides complete design documentation as part of the system supply process.<\/span><\/p>\n\t\t\t\t<div class=\"thfaq-enable-comment-box thfaqf-hide\"> <p>\t\t<div class=\"thfaqf-comment-wrapper\">\n\t\t\t<form form method=\"post\" class=\"thfaqf-post-comment\">\n\t\t\t\t<p><input class=\"thfaqf-comment-box thfaqf-uname\" type=\"text\" placeholder=\"Name...\"name=\"user_name\"\/><\/p>\n\t\t\t\t<p class=\"threq-name\"><\/p>\n\t\t\t\t<input type=\"hidden\" name=\"action\" value=\"thfaqf_comment\">\n\t\t\t\t<input type=\"hidden\" name=\"faq_id\" value=\"6967\">\n\t\t\t\t<input type=\"hidden\" name=\"faq_index\"value=\"2\">\n\t\t\t\t<p><textarea placeholder=\"Add a Comment...\"name=\"user_msg\" class=\"thfaqf-comment-box thfaqf-ucomment\"><\/textarea><\/p>\n\t\t\t\t<p class=\"threq-comment\"><\/p>\n\t\t\t\t<input type=\"hidden\" name=\"wp_thfaqc_nonce\" value=\"522defe169\"\/>\n\t\t    \t<p><button type=\"submit\" name=\"thfaqf_comment_submt\" class=\"thfaqf-submt-cmmt button primary is-xsmall\" onclick=\"submitFaqfComment(this)\">Send<\/button><\/p><p class=\"thfaqf-comment-validetion\"><\/p>\n\t\t    <\/form>\t\n\n\t\t    \t\t<\/div>\n\t\t <\/p><\/div>\n\t\t\t<\/div>\n\t\t\t<div class=\"log\"><\/div>\n\t\t<\/div>\n \t\t\t\t<div id=\"thfaqf-faq-item-6967_3\" class=\"thfaqf-faq-item  thfaqf-faq-item-6967    thfaqf-post-id-6967 thfaqf-count-dsply-setngs\" style=\"border-radius: 6px;\" >\n\t\t\t<div data-active_color=\"#ffffff\" class=\"thfaqf-faq-item-title\" style=\"border-width: 1px; border-style: solid; margin-bottom: -1px; background-color: #f3f3f3; border-color: #f3f3f3;\">\n \t\t\t\t<h4>\n \t\t\t\t\t \t\t\t\t<span class=\"thfaq-marker thfaqf-toggle-icon\" style=\" color: #007dcc;\"><\/span>\n \t\t\t\t\t<span class=\"thfaqf-title-text \" style=\" color: #000000;\" >Can duct routing be modified after installation if the initial design is not performing correctly?<\/span>\n \t\t\t\t<\/h4>\t\n\t\t\t<\/div>\n\t\t\t<div class=\"thfaqf-faq-item-content\" style=\"border-width: 1px; border-style: solid; background-color: #ffffff; border-color: #ffffff; color: #000000;\" >\n\t\t\t\t<p><span style=\"font-weight: 400\">Yes, but modifications after installation are more costly than getting the design right before installation. Adding dampers, resizing duct sections, or repositioning discharge grilles is possible but requires additional materials and labour. This is why commissioning with airflow measurement at every grille is essential - and why working with an experienced supplier like Symphony Venti-Cool from the design stage saves significant cost.<\/span><\/p>\n\t\t\t\t<div class=\"thfaq-enable-comment-box thfaqf-hide\"> <p>\t\t<div class=\"thfaqf-comment-wrapper\">\n\t\t\t<form form method=\"post\" class=\"thfaqf-post-comment\">\n\t\t\t\t<p><input class=\"thfaqf-comment-box thfaqf-uname\" type=\"text\" placeholder=\"Name...\"name=\"user_name\"\/><\/p>\n\t\t\t\t<p class=\"threq-name\"><\/p>\n\t\t\t\t<input type=\"hidden\" name=\"action\" value=\"thfaqf_comment\">\n\t\t\t\t<input type=\"hidden\" name=\"faq_id\" value=\"6967\">\n\t\t\t\t<input type=\"hidden\" name=\"faq_index\"value=\"3\">\n\t\t\t\t<p><textarea placeholder=\"Add a Comment...\"name=\"user_msg\" class=\"thfaqf-comment-box thfaqf-ucomment\"><\/textarea><\/p>\n\t\t\t\t<p class=\"threq-comment\"><\/p>\n\t\t\t\t<input type=\"hidden\" name=\"wp_thfaqc_nonce\" value=\"522defe169\"\/>\n\t\t    \t<p><button type=\"submit\" name=\"thfaqf_comment_submt\" class=\"thfaqf-submt-cmmt button primary is-xsmall\" onclick=\"submitFaqfComment(this)\">Send<\/button><\/p><p class=\"thfaqf-comment-validetion\"><\/p>\n\t\t    <\/form>\t\n\n\t\t    \t\t<\/div>\n\t\t <\/p><\/div>\n\t\t\t<\/div>\n\t\t\t<div class=\"log\"><\/div>\n\t\t<\/div>\n \t\t\t\t<div id=\"thfaqf-faq-item-6967_4\" class=\"thfaqf-faq-item  thfaqf-faq-item-6967    thfaqf-post-id-6967 thfaqf-count-dsply-setngs\" style=\"border-radius: 6px;\" >\n\t\t\t<div data-active_color=\"#ffffff\" class=\"thfaqf-faq-item-title\" style=\"border-width: 1px; border-style: solid; margin-bottom: -1px; background-color: #f3f3f3; border-color: #f3f3f3;\">\n \t\t\t\t<h4>\n \t\t\t\t\t \t\t\t\t<span class=\"thfaq-marker thfaqf-toggle-icon\" style=\" color: #007dcc;\"><\/span>\n \t\t\t\t\t<span class=\"thfaqf-title-text \" style=\" color: #000000;\" >Does the central cooling system design account for future factory layout changes?<\/span>\n \t\t\t\t<\/h4>\t\n\t\t\t<\/div>\n\t\t\t<div class=\"thfaqf-faq-item-content\" style=\"border-width: 1px; border-style: solid; background-color: #ffffff; border-color: #ffffff; color: #000000;\" >\n\t\t\t\t<p><span style=\"font-weight: 400\">A well-designed system includes provision for future duct extensions - blanked-off tee connections at key points along the trunk duct that can be opened and extended when new zones are added. Communicating planned future layout changes to your system designer at the outset is important for designing this flexibility in from the start.<\/span><\/p>\n\t\t\t\t<div class=\"thfaq-enable-comment-box thfaqf-hide\"> <p>\t\t<div class=\"thfaqf-comment-wrapper\">\n\t\t\t<form form method=\"post\" class=\"thfaqf-post-comment\">\n\t\t\t\t<p><input class=\"thfaqf-comment-box thfaqf-uname\" type=\"text\" placeholder=\"Name...\"name=\"user_name\"\/><\/p>\n\t\t\t\t<p class=\"threq-name\"><\/p>\n\t\t\t\t<input type=\"hidden\" name=\"action\" value=\"thfaqf_comment\">\n\t\t\t\t<input type=\"hidden\" name=\"faq_id\" value=\"6967\">\n\t\t\t\t<input type=\"hidden\" name=\"faq_index\"value=\"4\">\n\t\t\t\t<p><textarea placeholder=\"Add a Comment...\"name=\"user_msg\" class=\"thfaqf-comment-box thfaqf-ucomment\"><\/textarea><\/p>\n\t\t\t\t<p class=\"threq-comment\"><\/p>\n\t\t\t\t<input type=\"hidden\" name=\"wp_thfaqc_nonce\" value=\"522defe169\"\/>\n\t\t    \t<p><button type=\"submit\" name=\"thfaqf_comment_submt\" class=\"thfaqf-submt-cmmt button primary is-xsmall\" onclick=\"submitFaqfComment(this)\">Send<\/button><\/p><p class=\"thfaqf-comment-validetion\"><\/p>\n\t\t    <\/form>\t\n\n\t\t    \t\t<\/div>\n\t\t <\/p><\/div>\n\t\t\t<\/div>\n\t\t\t<div class=\"log\"><\/div>\n\t\t<\/div>\n \t\t\t\t<div id=\"thfaqf-faq-item-6967_5\" class=\"thfaqf-faq-item  thfaqf-faq-item-6967    thfaqf-post-id-6967 thfaqf-count-dsply-setngs\" style=\"border-radius: 6px;\" >\n\t\t\t<div data-active_color=\"#ffffff\" class=\"thfaqf-faq-item-title\" style=\"border-width: 1px; border-style: solid; margin-bottom: -1px; background-color: #f3f3f3; border-color: #f3f3f3;\">\n \t\t\t\t<h4>\n \t\t\t\t\t \t\t\t\t<span class=\"thfaq-marker thfaqf-toggle-icon\" style=\" color: #007dcc;\"><\/span>\n \t\t\t\t\t<span class=\"thfaqf-title-text \" style=\" color: #000000;\" >What is the maximum distance a duct can run from an AHU before CFM delivery is significantly reduced?<\/span>\n \t\t\t\t<\/h4>\t\n\t\t\t<\/div>\n\t\t\t<div class=\"thfaqf-faq-item-content\" style=\"border-width: 1px; border-style: solid; background-color: #ffffff; border-color: #ffffff; color: #000000;\" >\n\t\t\t\t<p><span style=\"font-weight: 400\">With correctly sized ductwork, effective CFM delivery can be maintained over runs of 40\u201360 metres from the AHU. Beyond this distance, duct diameter needs to increase significantly, or a secondary AHU unit should be positioned closer to the far zone. Symphony's duct design service calculates the optimal AHU positioning and duct sizing for every specific facility.<\/span><\/p>\n\t\t\t\t<div class=\"thfaq-enable-comment-box thfaqf-hide\"> <p>\t\t<div class=\"thfaqf-comment-wrapper\">\n\t\t\t<form form method=\"post\" class=\"thfaqf-post-comment\">\n\t\t\t\t<p><input class=\"thfaqf-comment-box thfaqf-uname\" type=\"text\" placeholder=\"Name...\"name=\"user_name\"\/><\/p>\n\t\t\t\t<p class=\"threq-name\"><\/p>\n\t\t\t\t<input type=\"hidden\" name=\"action\" value=\"thfaqf_comment\">\n\t\t\t\t<input type=\"hidden\" name=\"faq_id\" value=\"6967\">\n\t\t\t\t<input type=\"hidden\" name=\"faq_index\"value=\"5\">\n\t\t\t\t<p><textarea placeholder=\"Add a Comment...\"name=\"user_msg\" class=\"thfaqf-comment-box thfaqf-ucomment\"><\/textarea><\/p>\n\t\t\t\t<p class=\"threq-comment\"><\/p>\n\t\t\t\t<input type=\"hidden\" name=\"wp_thfaqc_nonce\" value=\"522defe169\"\/>\n\t\t    \t<p><button type=\"submit\" name=\"thfaqf_comment_submt\" class=\"thfaqf-submt-cmmt button primary is-xsmall\" onclick=\"submitFaqfComment(this)\">Send<\/button><\/p><p class=\"thfaqf-comment-validetion\"><\/p>\n\t\t    <\/form>\t\n\n\t\t    \t\t<\/div>\n\t\t <\/p><\/div>\n\t\t\t<\/div>\n\t\t\t<div class=\"log\"><\/div>\n\t\t<\/div>\n \t\t<\/div>\t        <p class=\"thfaqf-display-faq-setngs hide-faqf-group\">\n\t\t\t\t<span class=\"thfaqf-pagination\">\n\t\t\t\t\t<span onclick=\"ThfaqPagination(this,'prev_page')\" ><a class=\"thfaqf-prev-page thfaqf-div-none\"  href=\"#\"><<<\/a><\/span>\t\n\t\t\t\t\t\t\t\t            <span class=\"thfaqf-page-no \" data-number=\"1\">\n\t\t\t           \t<a class=\"thfaqf-pnumber thfaq-ft current\"href=\"#\" onclick=\"ThfaqEachPage(this)\" >1<\/a>\n\t\t\t            <\/span>\n\t\t\t             \n\t\t        \t<span onclick=\"ThfaqPagination(this,'next_page')\" data-page_count=\"1\"><a class=\"thfaqf-next-page thfaqf-div-none\" href=\"#\">>><\/a><\/span>\t\n\t\t\t\t<\/span>\n\t\t\t\t<input type=\"hidden\" class=\"thfaqf-count-faq-number\"name=\"count_faq\" value=\"6\"\/>\n\t\t\t<\/p><br>\n            \t    <\/div>\n\t    <\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>A centralised air cooling system is only as good as its duct design. A cooling system, poorly connected to a badly routed duct network, will deliver uneven temperatures across a facility &#8211; some zones sweltering while others are adequately cooled. The design of the duct layout is the engineering work that determines whether a central [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":6985,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[21],"tags":[],"class_list":["post-6965","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-air-cooling-systems"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Central Air Cooling System Layout: How to Design Duct Routing for Maximum Uniformity in Large Facilities<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/symphonyventicool.com\/blogs\/central-air-cooling-system-layout-how-to-design-duct-routing-for-maximum-uniformity-in-large-facilities\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Central Air Cooling System Layout: How to Design Duct Routing for Maximum Uniformity in Large Facilities\" \/>\n<meta property=\"og:description\" content=\"A centralised air cooling system is only as good as its duct design. A cooling system, poorly connected to a badly routed duct network, will deliver uneven temperatures across a facility &#8211; some zones sweltering while others are adequately cooled. 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