{"id":1732,"date":"2026-07-29T10:21:45","date_gmt":"2026-07-29T09:21:45","guid":{"rendered":"https:\/\/www.jprservices.co.uk\/products\/?post_type=product&#038;p=1732"},"modified":"2026-07-29T15:27:08","modified_gmt":"2026-07-29T14:27:08","slug":"adjustable-helical-swirl-diffuser-hsc-ad","status":"publish","type":"product","link":"https:\/\/www.jprservices.co.uk\/products\/product\/adjustable-helical-swirl-diffuser-hsc-ad\/","title":{"rendered":"Adjustable Helical Swirl Diffuser HSC-AD"},"content":{"rendered":"<div class=\"\" data-turn-id-container=\"20bf3765-0c0f-4f7d-8247-b1c581f59329\" data-is-intersecting=\"true\">The SMARTEMP\u00ae Adjustable Helical Swirl Diffuser, type HSC-AD, is a low-profile diffuser that produces a highly inductive swirl discharge, delivering supply air with an adjustable horizontal-to-vertical discharge direction. The swirling airflow provides excellent mixing characteristics, enabling high levels of draught-free cooling and efficient heating from elevated mounting heights down to floor level. This performance is achieved through the diffuser&#8217;s patent-pending design.<\/div>\n<div class=\"\" data-turn-id-container=\"request-WEB:fbe64168-a090-4f9b-9754-5459bdeb5d7a-4\" data-is-intersecting=\"true\">\n<section class=\"text-token-text-primary w-full focus:outline-none has-data-writing-block:pointer-events-none [&amp;:has([data-writing-block])&gt;*]: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:fbe64168-a090-4f9b-9754-5459bdeb5d7a-4\" data-turn-id-container=\"request-WEB:fbe64168-a090-4f9b-9754-5459bdeb5d7a-4\" data-testid=\"conversation-turn-10\" data-turn=\"assistant\">\n<div class=\"text-base my-auto mx-auto pb-8 [--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)\">\n<div 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\" data-conversation-screenshot-content=\"\">\n<div class=\"flex max-w-full flex-col gap-4 grow\">\n<div 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+&amp;]:mt-1\" dir=\"auto\" tabindex=\"0\" data-message-author-role=\"assistant\" data-message-id=\"57f7e72d-d36e-4376-ac88-951df37c5ec3\" data-message-model-slug=\"gpt-5-5\" data-turn-start-message=\"true\">\n<div class=\"flex w-full flex-col gap-1 empty:hidden\">\n<div class=\"markdown prose dark:prose-invert wrap-break-word w-full light markdown-new-styling\">\n<p data-start=\"482\" data-end=\"1038\">The diffuser incorporates twenty offset radial vanes with cambered leading edges, reducing both sound power levels and pressure drop to improve acoustic comfort while lowering fan energy consumption. The helical twist at the vane tips enhances downward air penetration during heating and reduces the minimum permissible airflow rate during cooling. Pressure drop remains substantially constant throughout the full range of discharge direction adjustment, ensuring stable HVAC system performance and consistent fan operation regardless of airflow direction.<\/p>\n<p data-start=\"1040\" data-end=\"1247\">The HSC-AD diffuser can be flush-mounted within a ceiling or suspended freely without requiring Coand\u0103 attachment to the ceiling surface. It is recommended for installation heights between 2.5 and 10 metres.<\/p>\n<p data-start=\"1249\" data-end=\"1657\">The diffuser is suitable for supply air temperature differentials of up to -13 K when discharging horizontally in cooling mode and up to +15 K when discharging downwards in heating mode, depending on airflow rate and mounting height. Discharge direction can be adjusted manually, electrically, or automatically using a thermal wax element, eliminating the need for external controls or wiring (see Figure 3).<\/p>\n<p data-start=\"1659\" data-end=\"1916\" data-is-last-node=\"\" data-is-only-node=\"\">The HSC-AD features swirl vanes that sit flush with the surrounding diffuser face, providing a clean, streamlined appearance. The diffuser face is available in either a square configuration (up to neck size DN500) or a round configuration (Figures 1 and 2).<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p><a href=\"https:\/\/www.jprservices.co.uk\/wp-content\/uploads\/2021\/11\/HSC-AD-JPR.pdf\" target=\"_blank\" rel=\"noopener\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-239\" src=\"https:\/\/www.jprservices.co.uk\/wp-content\/uploads\/2021\/11\/Click-to-View.png\" alt=\"Click to View PDF\" width=\"204\" height=\"64\" srcset=\"https:\/\/www.jprservices.co.uk\/wp-content\/uploads\/2021\/11\/Click-to-View.png 204w, https:\/\/www.jprservices.co.uk\/wp-content\/uploads\/2021\/11\/Click-to-View-1x1.png 1w\" sizes=\"auto, (max-width: 204px) 100vw, 204px\" \/><\/a><\/p>\n[wpforms id=\"55\"]\n","protected":false},"featured_media":1718,"template":"","meta":[],"product_brand":[],"product_cat":[78],"product_tag":[],"class_list":["post-1732","product","type-product","status-publish","has-post-thumbnail","product_cat-smartemp-products","first","instock","shipping-taxable","product-type-simple"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Adjustable Helical Swirl Diffuser HSC-AD | JPR Services<\/title>\n<meta name=\"description\" content=\"The SMARTEMP\u00ae Adjustable Helical Swirl Diffuser, type HSC-AD, is a low-profile diffuser that produces a highly inductive swirl discharge, delivering supply air with an adjustable horizontal-to-vertical discharge direction. The swirling airflow provides excellent mixing characteristics, enabling high levels of draught-free cooling and efficient heating from elevated mounting heights down to floor level. This performance is achieved through the diffuser&#039;s patent-pending design.The diffuser incorporates twenty offset radial vanes with cambered leading edges, reducing both sound power levels and pressure drop to improve acoustic comfort while lowering fan energy consumption. The helical twist at the vane tips enhances downward air penetration during heating and reduces the minimum permissible airflow rate during cooling. Pressure drop remains substantially constant throughout the full range of discharge direction adjustment, ensuring stable HVAC system performance and consistent fan operation regardless of airflow direction.The HSC-AD diffuser can be flush-mounted within a ceiling or suspended freely without requiring Coand\u0103 attachment to the ceiling surface. It is recommended for installation heights between 2.5 and 10 metres.The diffuser is suitable for supply air temperature differentials of up to -13 K when discharging horizontally in cooling mode and up to +15 K when discharging downwards in heating mode, depending on airflow rate and mounting height. Discharge direction can be adjusted manually, electrically, or automatically using a thermal wax element, eliminating the need for external controls or wiring (see Figure 3).The HSC-AD features swirl vanes that sit flush with the surrounding diffuser face, providing a clean, streamlined appearance. The diffuser face is available in either a square configuration (up to neck size DN500) or a round configuration (Figures 1 and 2).\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.jprservices.co.uk\/products\/product\/adjustable-helical-swirl-diffuser-hsc-ad\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Adjustable Helical Swirl Diffuser HSC-AD | JPR Services\" \/>\n<meta property=\"og:description\" content=\"The SMARTEMP\u00ae Adjustable Helical Swirl Diffuser, type HSC-AD, is a low-profile diffuser that produces a highly inductive swirl discharge, delivering supply air with an adjustable horizontal-to-vertical discharge direction. The swirling airflow provides excellent mixing characteristics, enabling high levels of draught-free cooling and efficient heating from elevated mounting heights down to floor level. This performance is achieved through the diffuser&#039;s patent-pending design.The diffuser incorporates twenty offset radial vanes with cambered leading edges, reducing both sound power levels and pressure drop to improve acoustic comfort while lowering fan energy consumption. The helical twist at the vane tips enhances downward air penetration during heating and reduces the minimum permissible airflow rate during cooling. Pressure drop remains substantially constant throughout the full range of discharge direction adjustment, ensuring stable HVAC system performance and consistent fan operation regardless of airflow direction.The HSC-AD diffuser can be flush-mounted within a ceiling or suspended freely without requiring Coand\u0103 attachment to the ceiling surface. It is recommended for installation heights between 2.5 and 10 metres.The diffuser is suitable for supply air temperature differentials of up to -13 K when discharging horizontally in cooling mode and up to +15 K when discharging downwards in heating mode, depending on airflow rate and mounting height. Discharge direction can be adjusted manually, electrically, or automatically using a thermal wax element, eliminating the need for external controls or wiring (see Figure 3).The HSC-AD features swirl vanes that sit flush with the surrounding diffuser face, providing a clean, streamlined appearance. The diffuser face is available in either a square configuration (up to neck size DN500) or a round configuration (Figures 1 and 2).\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.jprservices.co.uk\/products\/product\/adjustable-helical-swirl-diffuser-hsc-ad\/\" \/>\n<meta property=\"og:site_name\" content=\"JPR Services\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/jprservices.co.uk\" \/>\n<meta property=\"article:modified_time\" content=\"2026-07-29T14:27:08+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.jprservices.co.uk\/wp-content\/uploads\/2021\/11\/HSC-AD.png\" \/>\n\t<meta property=\"og:image:width\" content=\"769\" \/>\n\t<meta property=\"og:image:height\" content=\"769\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/png\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Estimated reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.jprservices.co.uk\\\/products\\\/product\\\/adjustable-helical-swirl-diffuser-hsc-ad\\\/\",\"url\":\"https:\\\/\\\/www.jprservices.co.uk\\\/products\\\/product\\\/adjustable-helical-swirl-diffuser-hsc-ad\\\/\",\"name\":\"Adjustable Helical Swirl Diffuser HSC-AD | JPR Services\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.jprservices.co.uk\\\/products\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.jprservices.co.uk\\\/products\\\/product\\\/adjustable-helical-swirl-diffuser-hsc-ad\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.jprservices.co.uk\\\/products\\\/product\\\/adjustable-helical-swirl-diffuser-hsc-ad\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.jprservices.co.uk\\\/wp-content\\\/uploads\\\/2021\\\/11\\\/HSC-AD.png\",\"datePublished\":\"2026-07-29T09:21:45+00:00\",\"dateModified\":\"2026-07-29T14:27:08+00:00\",\"description\":\"The SMARTEMP\u00ae Adjustable Helical Swirl Diffuser, type HSC-AD, is a low-profile diffuser that produces a highly inductive swirl discharge, delivering supply air with an adjustable horizontal-to-vertical discharge direction. The swirling airflow provides excellent mixing characteristics, enabling high levels of draught-free cooling and efficient heating from elevated mounting heights down to floor level. This performance is achieved through the diffuser's patent-pending design.The diffuser incorporates twenty offset radial vanes with cambered leading edges, reducing both sound power levels and pressure drop to improve acoustic comfort while lowering fan energy consumption. The helical twist at the vane tips enhances downward air penetration during heating and reduces the minimum permissible airflow rate during cooling. Pressure drop remains substantially constant throughout the full range of discharge direction adjustment, ensuring stable HVAC system performance and consistent fan operation regardless of airflow direction.The HSC-AD diffuser can be flush-mounted within a ceiling or suspended freely without requiring Coand\u0103 attachment to the ceiling surface. It is recommended for installation heights between 2.5 and 10 metres.The diffuser is suitable for supply air temperature differentials of up to -13 K when discharging horizontally in cooling mode and up to +15 K when discharging downwards in heating mode, depending on airflow rate and mounting height. Discharge direction can be adjusted manually, electrically, or automatically using a thermal wax element, eliminating the need for external controls or wiring (see Figure 3).The HSC-AD features swirl vanes that sit flush with the surrounding diffuser face, providing a clean, streamlined appearance. The diffuser face is available in either a square configuration (up to neck size DN500) or a round configuration (Figures 1 and 2).\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.jprservices.co.uk\\\/products\\\/product\\\/adjustable-helical-swirl-diffuser-hsc-ad\\\/#breadcrumb\"},\"inLanguage\":\"en-GB\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.jprservices.co.uk\\\/products\\\/product\\\/adjustable-helical-swirl-diffuser-hsc-ad\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-GB\",\"@id\":\"https:\\\/\\\/www.jprservices.co.uk\\\/products\\\/product\\\/adjustable-helical-swirl-diffuser-hsc-ad\\\/#primaryimage\",\"url\":\"https:\\\/\\\/www.jprservices.co.uk\\\/wp-content\\\/uploads\\\/2021\\\/11\\\/HSC-AD.png\",\"contentUrl\":\"https:\\\/\\\/www.jprservices.co.uk\\\/wp-content\\\/uploads\\\/2021\\\/11\\\/HSC-AD.png\",\"width\":769,\"height\":769},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.jprservices.co.uk\\\/products\\\/product\\\/adjustable-helical-swirl-diffuser-hsc-ad\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/www.jprservices.co.uk\\\/products\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Adjustable Helical Swirl Diffuser HSC-AD\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.jprservices.co.uk\\\/products\\\/#website\",\"url\":\"https:\\\/\\\/www.jprservices.co.uk\\\/products\\\/\",\"name\":\"JPR Services\",\"description\":\"Grillles | Diffusers | Swirl Diffusers | Air Valves | Floor Grilles | Plastered in Products | Louvers\",\"publisher\":{\"@id\":\"https:\\\/\\\/www.jprservices.co.uk\\\/products\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.jprservices.co.uk\\\/products\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-GB\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/www.jprservices.co.uk\\\/products\\\/#organization\",\"name\":\"JPR Services\",\"url\":\"https:\\\/\\\/www.jprservices.co.uk\\\/products\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-GB\",\"@id\":\"https:\\\/\\\/www.jprservices.co.uk\\\/products\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/i0.wp.com\\\/www.jprservices.co.uk\\\/wp-content\\\/uploads\\\/2021\\\/11\\\/cropped-favicon.png?fit=512%2C512&ssl=1\",\"contentUrl\":\"https:\\\/\\\/i0.wp.com\\\/www.jprservices.co.uk\\\/wp-content\\\/uploads\\\/2021\\\/11\\\/cropped-favicon.png?fit=512%2C512&ssl=1\",\"width\":512,\"height\":512,\"caption\":\"JPR Services\"},\"image\":{\"@id\":\"https:\\\/\\\/www.jprservices.co.uk\\\/products\\\/#\\\/schema\\\/logo\\\/image\\\/\"},\"sameAs\":[\"https:\\\/\\\/www.facebook.com\\\/jprservices.co.uk\",\"https:\\\/\\\/www.linkedin.com\\\/company\\\/jpr-services-welwyn-ltd\\\/\"]}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Adjustable Helical Swirl Diffuser HSC-AD | JPR Services","description":"The SMARTEMP\u00ae Adjustable Helical Swirl Diffuser, type HSC-AD, is a low-profile diffuser that produces a highly inductive swirl discharge, delivering supply air with an adjustable horizontal-to-vertical discharge direction. The swirling airflow provides excellent mixing characteristics, enabling high levels of draught-free cooling and efficient heating from elevated mounting heights down to floor level. This performance is achieved through the diffuser's patent-pending design.The diffuser incorporates twenty offset radial vanes with cambered leading edges, reducing both sound power levels and pressure drop to improve acoustic comfort while lowering fan energy consumption. The helical twist at the vane tips enhances downward air penetration during heating and reduces the minimum permissible airflow rate during cooling. Pressure drop remains substantially constant throughout the full range of discharge direction adjustment, ensuring stable HVAC system performance and consistent fan operation regardless of airflow direction.The HSC-AD diffuser can be flush-mounted within a ceiling or suspended freely without requiring Coand\u0103 attachment to the ceiling surface. It is recommended for installation heights between 2.5 and 10 metres.The diffuser is suitable for supply air temperature differentials of up to -13 K when discharging horizontally in cooling mode and up to +15 K when discharging downwards in heating mode, depending on airflow rate and mounting height. Discharge direction can be adjusted manually, electrically, or automatically using a thermal wax element, eliminating the need for external controls or wiring (see Figure 3).The HSC-AD features swirl vanes that sit flush with the surrounding diffuser face, providing a clean, streamlined appearance. The diffuser face is available in either a square configuration (up to neck size DN500) or a round configuration (Figures 1 and 2).","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.jprservices.co.uk\/products\/product\/adjustable-helical-swirl-diffuser-hsc-ad\/","og_locale":"en_GB","og_type":"article","og_title":"Adjustable Helical Swirl Diffuser HSC-AD | JPR Services","og_description":"The SMARTEMP\u00ae Adjustable Helical Swirl Diffuser, type HSC-AD, is a low-profile diffuser that produces a highly inductive swirl discharge, delivering supply air with an adjustable horizontal-to-vertical discharge direction. The swirling airflow provides excellent mixing characteristics, enabling high levels of draught-free cooling and efficient heating from elevated mounting heights down to floor level. This performance is achieved through the diffuser's patent-pending design.The diffuser incorporates twenty offset radial vanes with cambered leading edges, reducing both sound power levels and pressure drop to improve acoustic comfort while lowering fan energy consumption. The helical twist at the vane tips enhances downward air penetration during heating and reduces the minimum permissible airflow rate during cooling. Pressure drop remains substantially constant throughout the full range of discharge direction adjustment, ensuring stable HVAC system performance and consistent fan operation regardless of airflow direction.The HSC-AD diffuser can be flush-mounted within a ceiling or suspended freely without requiring Coand\u0103 attachment to the ceiling surface. It is recommended for installation heights between 2.5 and 10 metres.The diffuser is suitable for supply air temperature differentials of up to -13 K when discharging horizontally in cooling mode and up to +15 K when discharging downwards in heating mode, depending on airflow rate and mounting height. Discharge direction can be adjusted manually, electrically, or automatically using a thermal wax element, eliminating the need for external controls or wiring (see Figure 3).The HSC-AD features swirl vanes that sit flush with the surrounding diffuser face, providing a clean, streamlined appearance. The diffuser face is available in either a square configuration (up to neck size DN500) or a round configuration (Figures 1 and 2).","og_url":"https:\/\/www.jprservices.co.uk\/products\/product\/adjustable-helical-swirl-diffuser-hsc-ad\/","og_site_name":"JPR Services","article_publisher":"https:\/\/www.facebook.com\/jprservices.co.uk","article_modified_time":"2026-07-29T14:27:08+00:00","og_image":[{"width":769,"height":769,"url":"https:\/\/www.jprservices.co.uk\/wp-content\/uploads\/2021\/11\/HSC-AD.png","type":"image\/png"}],"twitter_card":"summary_large_image","twitter_misc":{"Estimated reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/www.jprservices.co.uk\/products\/product\/adjustable-helical-swirl-diffuser-hsc-ad\/","url":"https:\/\/www.jprservices.co.uk\/products\/product\/adjustable-helical-swirl-diffuser-hsc-ad\/","name":"Adjustable Helical Swirl Diffuser HSC-AD | JPR Services","isPartOf":{"@id":"https:\/\/www.jprservices.co.uk\/products\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.jprservices.co.uk\/products\/product\/adjustable-helical-swirl-diffuser-hsc-ad\/#primaryimage"},"image":{"@id":"https:\/\/www.jprservices.co.uk\/products\/product\/adjustable-helical-swirl-diffuser-hsc-ad\/#primaryimage"},"thumbnailUrl":"https:\/\/www.jprservices.co.uk\/wp-content\/uploads\/2021\/11\/HSC-AD.png","datePublished":"2026-07-29T09:21:45+00:00","dateModified":"2026-07-29T14:27:08+00:00","description":"The SMARTEMP\u00ae Adjustable Helical Swirl Diffuser, type HSC-AD, is a low-profile diffuser that produces a highly inductive swirl discharge, delivering supply air with an adjustable horizontal-to-vertical discharge direction. The swirling airflow provides excellent mixing characteristics, enabling high levels of draught-free cooling and efficient heating from elevated mounting heights down to floor level. This performance is achieved through the diffuser's patent-pending design.The diffuser incorporates twenty offset radial vanes with cambered leading edges, reducing both sound power levels and pressure drop to improve acoustic comfort while lowering fan energy consumption. The helical twist at the vane tips enhances downward air penetration during heating and reduces the minimum permissible airflow rate during cooling. Pressure drop remains substantially constant throughout the full range of discharge direction adjustment, ensuring stable HVAC system performance and consistent fan operation regardless of airflow direction.The HSC-AD diffuser can be flush-mounted within a ceiling or suspended freely without requiring Coand\u0103 attachment to the ceiling surface. It is recommended for installation heights between 2.5 and 10 metres.The diffuser is suitable for supply air temperature differentials of up to -13 K when discharging horizontally in cooling mode and up to +15 K when discharging downwards in heating mode, depending on airflow rate and mounting height. Discharge direction can be adjusted manually, electrically, or automatically using a thermal wax element, eliminating the need for external controls or wiring (see Figure 3).The HSC-AD features swirl vanes that sit flush with the surrounding diffuser face, providing a clean, streamlined appearance. The diffuser face is available in either a square configuration (up to neck size DN500) or a round configuration (Figures 1 and 2).","breadcrumb":{"@id":"https:\/\/www.jprservices.co.uk\/products\/product\/adjustable-helical-swirl-diffuser-hsc-ad\/#breadcrumb"},"inLanguage":"en-GB","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.jprservices.co.uk\/products\/product\/adjustable-helical-swirl-diffuser-hsc-ad\/"]}]},{"@type":"ImageObject","inLanguage":"en-GB","@id":"https:\/\/www.jprservices.co.uk\/products\/product\/adjustable-helical-swirl-diffuser-hsc-ad\/#primaryimage","url":"https:\/\/www.jprservices.co.uk\/wp-content\/uploads\/2021\/11\/HSC-AD.png","contentUrl":"https:\/\/www.jprservices.co.uk\/wp-content\/uploads\/2021\/11\/HSC-AD.png","width":769,"height":769},{"@type":"BreadcrumbList","@id":"https:\/\/www.jprservices.co.uk\/products\/product\/adjustable-helical-swirl-diffuser-hsc-ad\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/www.jprservices.co.uk\/products\/"},{"@type":"ListItem","position":2,"name":"Adjustable Helical Swirl Diffuser HSC-AD"}]},{"@type":"WebSite","@id":"https:\/\/www.jprservices.co.uk\/products\/#website","url":"https:\/\/www.jprservices.co.uk\/products\/","name":"JPR Services","description":"Grillles | Diffusers | Swirl Diffusers | Air Valves | Floor Grilles | Plastered in Products | Louvers","publisher":{"@id":"https:\/\/www.jprservices.co.uk\/products\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.jprservices.co.uk\/products\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-GB"},{"@type":"Organization","@id":"https:\/\/www.jprservices.co.uk\/products\/#organization","name":"JPR Services","url":"https:\/\/www.jprservices.co.uk\/products\/","logo":{"@type":"ImageObject","inLanguage":"en-GB","@id":"https:\/\/www.jprservices.co.uk\/products\/#\/schema\/logo\/image\/","url":"https:\/\/i0.wp.com\/www.jprservices.co.uk\/wp-content\/uploads\/2021\/11\/cropped-favicon.png?fit=512%2C512&ssl=1","contentUrl":"https:\/\/i0.wp.com\/www.jprservices.co.uk\/wp-content\/uploads\/2021\/11\/cropped-favicon.png?fit=512%2C512&ssl=1","width":512,"height":512,"caption":"JPR Services"},"image":{"@id":"https:\/\/www.jprservices.co.uk\/products\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/jprservices.co.uk","https:\/\/www.linkedin.com\/company\/jpr-services-welwyn-ltd\/"]}]}},"_links":{"self":[{"href":"https:\/\/www.jprservices.co.uk\/products\/wp-json\/wp\/v2\/product\/1732","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.jprservices.co.uk\/products\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/www.jprservices.co.uk\/products\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.jprservices.co.uk\/products\/wp-json\/wp\/v2\/media\/1718"}],"wp:attachment":[{"href":"https:\/\/www.jprservices.co.uk\/products\/wp-json\/wp\/v2\/media?parent=1732"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/www.jprservices.co.uk\/products\/wp-json\/wp\/v2\/product_brand?post=1732"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/www.jprservices.co.uk\/products\/wp-json\/wp\/v2\/product_cat?post=1732"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/www.jprservices.co.uk\/products\/wp-json\/wp\/v2\/product_tag?post=1732"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}