{"id":1922,"date":"2026-04-09T08:42:21","date_gmt":"2026-04-09T08:42:21","guid":{"rendered":"https:\/\/vitalenergi.creativespark.co.uk\/?p=1922"},"modified":"2026-04-09T08:42:21","modified_gmt":"2026-04-09T08:42:21","slug":"why-is-your-choice-of-hiu-the-key-to-low-carbon-living","status":"publish","type":"post","link":"https:\/\/vitalenergi.creativespark.co.uk\/?p=1922","title":{"rendered":"Why is your choice of HIU the key to low-carbon living?"},"content":{"rendered":"<p>\ufeff<\/p>\n<p><meta name=\"viewport\" content=\"width=device-width, initial-scale=1, shrink-to-fit=no\"><meta http-equiv=\"X-UA-Compatible\" content=\"IE=edge\"><meta name=\"format-detection\" content=\"telephone=no\"><meta charset=\"utf-8\"><title>Why is your choice of HIU the key to low-carbon living?<\/title><meta name=\"description\" content=\"\"><meta name=\"keywords\" content=\"\"><meta name=\"robots\" content=\"index,follow\"><meta name=\"googlebot\" content=\"index,follow\"><meta name=\"twitter:card\" content=\"summary\"><meta name=\"twitter:title\" content=\"Why is your choice of HIU the key to low-carbon living?\"><meta name=\"twitter:description\" content=\"\"><meta property=\"og:type\" content=\"website\"><meta property=\"og:url\" content=\"https:\/\/www.vitalenergi.co.uk\/media\/press-releases\/why-is-your-choice-of-hiu-the-key-to-low-carbon-living\/\"><meta property=\"og:title\" content=\"Why is your choice of HIU the key to low-carbon living?\"><meta property=\"og:description\" content=\"\"><\/p>\n<div>\n<div class=\"promotional-banner\">\n<div class=\"promotional-banner__type-3\">\n<div class=\"wrap\">\n<div class=\"promotional-banner__wrap\">\n<div class=\"promotional-banner__media promotional-banner__media--dark\"><img decoding=\"async\" class=\"promotional-banner__image\" src=\"https:\/\/www.vitalenergi.co.uk\/media\/f5rburae\/cover-image-vtherme-cu-2025.png?anchor=center&amp;mode=crop&amp;width=406&amp;height=406&amp;rnd=133942106973670000\" alt=\"Cover Image Vtherme Cu 2025\"><\/div>\n<div class=\"promotional-banner__content\">\n<h3 class=\"promotional-banner__title\">Why is your choice of HIU the key to low-carbon living?<\/h3>\n<p class=\"promotional-banner__text\">Heat Interface Units (HIUs) are integral to ensuring optimal energy efficiency across heat networks. Your choice of HIU can directly impact your operating costs, overall system efficiency, and end-user bills. One way to differentiate HIUs in the market, and a topic that is often not discussed, is to consider how much water a HIU uses across a system.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<div class=\"rich-text-case-study rte\">\n<div class=\"wrap rich-text-case-study__wrap\">\n<h2 class=\"rich-text-case-study__title rte__title\">Cost &amp; Energy Efficiency<\/h2>\n<p>Think of your heating system like a delivery service.<\/p>\n<ul>\n<li>A HIU with\u00a0high standby \u2018keep warm\u2019 volume\u00a0is like a van that idles all day, burning fuel while waiting for its next job.<\/li>\n<li>A HIU with\u00a0lower standby volume, like the <a href=\"https:\/\/www.vitalenergi.co.uk\/hius-overview\/\" title=\"HIUs Overview\">vTherm\u02dae,<\/a> is more like an electric bike ready when needed, but not wasting energy when it\u2019s not.<\/li>\n<\/ul>\n<p>Keeping excess water warm and circulating it unnecessarily is like paying to heat rooms no one ever enters. Multiply that across multiple sites and years, and the costs, both financial and carbon, add up fast.<\/p>\n<p>Inevitably, this leads to the excess costs being passed onto the end-user by way of higher bills.<\/p>\n<\/div>\n<\/div>\n<div class=\"rich-text-case-study rte\">\n<div class=\"wrap rich-text-case-study__wrap\">\n<h2 class=\"rich-text-case-study__title rte__title\">Lower Annual Volumes<\/h2>\n<p>As confirmed by the <a href=\"https:\/\/www.vitalenergi.co.uk\/products-services\/energy-supply-consumption-management\/hius-overview\/besa\/\" title=\"BESA\">BESA 2023 test regime<\/a>, the <a href=\"https:\/\/www.vitalenergi.co.uk\/hius-overview\/\" title=\"HIUs Overview\">vTherm\u02dae Heat Interface Unit\u00a0<\/a> annual water volumes are lower than the nearest competitor unit, topping the table in using significantly less water, even at high temperatures.<\/p>\n<p>The <a href=\"https:\/\/www.vitalenergi.co.uk\/hius-overview\/\" title=\"HIUs Overview\">vTherm\u02dae<\/a> HIU \u2018keep warm\u2019 standby volume results at 70\u02da C: <strong>15.6m<sup>3<\/sup>\/a (closest competitor unit based on the VWART result is at 20.6m<sup>3<\/sup>\/a)<\/strong><\/p>\n<p>Although a difference of <strong>5m<sup>3<\/sup>\/a <\/strong>may not seem a huge amount, when this is multiplied by the number of heat interface units on a project, over a year and product lifetime, the water volumes and costs soon increase to huge proportions.<\/p>\n<p>Breaking down the numbers:<\/p>\n<ul>\n<li>One project&#8217;s heating system includes 1000 Heat Interface Units (HIUs).<\/li>\n<li>The <a href=\"https:\/\/www.vitalenergi.co.uk\/hius-overview\/\" title=\"HIUs Overview\">vTherm\u02dae<\/a> uses 5 cubic metres less standby water per HIU per year compared to the nearest competitor.<\/li>\n<li>Multiply that out: 1,000 HIUs x 5m3\/pa = 5000m3 water annually.<\/li>\n<li>That\u2019s 5 million litres of unnecessary water circulating through just one system, every single year.<\/li>\n<\/ul>\n<p>The <a href=\"https:\/\/www.vitalenergi.co.uk\/hius-overview\/\" title=\"HIUs Overview\">vTherm\u02dae<\/a> is like filling a bath with just the right amount of water. The nearest competitor? Like overfilling it every time, wasting water, energy, and money.<\/p>\n<\/div>\n<\/div>\n<div class=\"promotional-banner\">\n<div class=\"promotional-banner__type-1\">\n<div class=\"big-wrap big-wrap--without-padding\">\n<div class=\"promotional-banner__wrap\">\n<div class=\"promotional-banner__media\"><img decoding=\"async\" src=\"https:\/\/www.vitalenergi.co.uk\/media\/zxun3iy1\/queens_quay_vtherm_013.jpg?anchor=center&amp;mode=crop&amp;width=0&amp;height=552&amp;rnd=133941217024530000\" alt=\"Queens Quay Vtherm 013\"><\/div>\n<div class=\"promotional-banner__content\">\n<p class=\"promotional-banner__text\">With proven performance on low-temperature networks and heat pump compatibility, the vTherm\u02dae helps reduce project operating costs and improves the experience for residents by cutting bills and carbon.<\/p>\n<p><a href=\"https:\/\/www.vitalenergi.co.uk\/contact\/\" class=\"btn\">Click here to talk to our team<span class=\"btn__arrow font-ico-btn-arrow\"><\/span><\/a><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>\ufeff Why is your choice of HIU the key to low-carbon living? Why is your choice of HIU the key to low-carbon living? Heat Interface Units (HIUs) are integral to ensuring optimal energy efficiency across heat networks. Your choice of HIU can directly impact your operating costs, overall system efficiency, and end-user bills. One way [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":685,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[1],"tags":[],"ve_media_section":[3],"ve_media_year":[],"ve_sector":[],"class_list":["post-1922","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uncategorized","ve_media_section-press-releases"],"acf":[],"_links":{"self":[{"href":"https:\/\/vitalenergi.creativespark.co.uk\/index.php?rest_route=\/wp\/v2\/posts\/1922","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vitalenergi.creativespark.co.uk\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/vitalenergi.creativespark.co.uk\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/vitalenergi.creativespark.co.uk\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/vitalenergi.creativespark.co.uk\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1922"}],"version-history":[{"count":0,"href":"https:\/\/vitalenergi.creativespark.co.uk\/index.php?rest_route=\/wp\/v2\/posts\/1922\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/vitalenergi.creativespark.co.uk\/index.php?rest_route=\/wp\/v2\/media\/685"}],"wp:attachment":[{"href":"https:\/\/vitalenergi.creativespark.co.uk\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1922"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vitalenergi.creativespark.co.uk\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1922"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vitalenergi.creativespark.co.uk\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1922"},{"taxonomy":"ve_media_section","embeddable":true,"href":"https:\/\/vitalenergi.creativespark.co.uk\/index.php?rest_route=%2Fwp%2Fv2%2Fve_media_section&post=1922"},{"taxonomy":"ve_media_year","embeddable":true,"href":"https:\/\/vitalenergi.creativespark.co.uk\/index.php?rest_route=%2Fwp%2Fv2%2Fve_media_year&post=1922"},{"taxonomy":"ve_sector","embeddable":true,"href":"https:\/\/vitalenergi.creativespark.co.uk\/index.php?rest_route=%2Fwp%2Fv2%2Fve_sector&post=1922"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}