{"id":27799,"date":"2025-12-04T11:42:33","date_gmt":"2025-12-04T09:42:33","guid":{"rendered":"https:\/\/www.vallox.com\/hyvin-suunniteltu-ilmanvaihto-on-energiatehokas\/"},"modified":"2025-12-04T12:11:37","modified_gmt":"2025-12-04T10:11:37","slug":"hyvin-suunniteltu-ilmanvaihto-on-energiatehokas","status":"publish","type":"post","link":"https:\/\/www.vallox.com\/en\/hyvin-suunniteltu-ilmanvaihto-on-energiatehokas\/","title":{"rendered":"A Well designed ventilation system is energy-efficient"},"content":{"rendered":"    <div id=\"Section\" class=\"Block Section overflow-hidden w-full\">\n        <div class=\"Section-content relative max-w-[1088px] mx-auto w-full\">\n            \n\n<p class=\"has-text-align-center has-medium-font-size\">The planning of ventilation affects the energy-efficiency and indoor air quality of<br>your home. Before building or renovating ventilation in the home, the first step is<br>to hire a HVAC designer.<\/p>\n\n\n    <\/div>\n<\/div>\n\n\n    <div id=\"Section\" class=\"Block Section overflow-hidden w-full\">\n        <div class=\"Section-content relative max-w-[1088px] mx-auto w-full\">\n            \n\n<p>When preparing the ventilation plan, the designer observes the requirements related to the indoor<br>air and ventilation of the building. For instance, the plan describes the airflows in the apartment, the<br>implementation of soundproofing and the type of a suitable ventilation unit. The designer also specifies<br>the efficiency of ventilation for various circumstances in the home. Builders of their own homes<br>and those renovating ventilation are advised to contact an HVAC designer to discuss the automation<br>and control options to find the best ventilation solution to suit their needs and preferences.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Mechanical ventilation promotes energy-efficiency<\/h2>\n\n\n\n<p>The airtightness of the building affects energy-efficiency, which is why controlled ventilation plays a major role. The energy consumption of mechanical ventilation is affected by two factors:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Heating of the air that replaces the air being extracted. The more efficient the heat recovery, the less energy the postheating radiator consumes.<\/li>\n\n\n\n<li>With the current EC motors, the electricity consumption of the fans is quite low.<\/li>\n<\/ul>\n\n\n\n<p>Heat recovery can generate savings in other heating of the house, as the ventilation unit can use the heat in the extract air. When choosing a ventilation unit, the annual efficiency is the most important figure indicating energy consumption. It indicates how much of the heat in the extract air the unit\u2019s heat recovery system can utilise on average throughout the year. The figure takes into account important<br>practical questions, such as the operation of freeze protection and the weather conditions. Therefore, the annual efficiency figure is always lower than the temperature efficiency figure, and this should be kept in mind when comparing the efficiency of units. For instance, in larger detached houses, the annual efficiency of a typical MyVallox 149 CFi ventilation unit is as high as 83%!<\/p>\n\n\n    <\/div>\n<\/div>\n\n\n<section class=\"mb-8 w-full FiftyFiftyVisualWrapper\"  >\n    <div>\n        <div class=\"FiftyFiftyVisual relative flex w-full justify-between flex-col xl:flex-row\">\n            <div class=\"h-min\n                w-full xl:w-5\/12 3xl:w-7\/12\n                pt-4 sm:pt-8 md:pt-12 lg:pt-20  3xl:pt-20\n                px-0\n                \n            \">\n                <div class=\"bgElement calc(100vw \/ 2 * ((100vw - 1860px) * 0.1))\n                    absolute z-0 reversewrap\n                    bgElement-right\n                    left-0 right-0 xl:right-[50%] 3xl:right-[calc((40vw-((100vw-1860px)*-0.03)))] 3xl:min-w-[1200px] xl:rounded-tr-xl\n                    \n                    top-0\n                    bottom-24 xl:bottom-0\n                                        bg-[rgba(165,185,196,0.3)]\"\n                ><\/div>\n                                    <h2 class=\"Title Title-left relative z-10\n                        flex flex-col justify-start\n                        text-black\n                        text-2xl lg:text-3xl 2xl:text-4xl\n                        leading-7 lg:leading-8\n                        font-bold\n                        mb-4\n                        xl:pr-8\n                        \">\n                        Recover heat, don\u2019t waste it\n                    <\/h2>\n                                                    <div class=\"Content Content-left flex flex-col justify-center relative z-10\n                        xl:pr-8\n                        \">\n                                                    <span class=\"Text text-black xl:text-custom-gray-dark pb-2\">\n                                <p>The heat recovery cell plays an essential role in mechanical ventilation. It utilises the heat recovered from the extract air and transfers it into the supply air. This way, the supply air is also suitably warm in cold weather, in addition to which the system reduces the heating need of the house. Even on cold days, the ventilation unit can heat the supply air to +17 degrees Celsius, and the heating system of the home<br \/>\nhas to account for only a few degrees.<\/p>\n\n                            <\/span>\n                                                                    <\/div>\n                            <\/div>\n\n                            <div class=\"ImgWrap ImgWrap-right mt-8 xl:mt-20\n                    w-full xl:w-7\/12 xl:max-w-[950px]\n                    z-10 bottom-0 rounded-tl-[5rem] rounded-br-[5rem] overflow-hidden right-0 aspect-video\n                    xl:justify-end\n                    ml-auto sm:-mr-2 md:-mr-12 lg:-mr-[4.5rem] xl:mr-0\n                \">\n                    <img decoding=\"async\"\n                    loading=\"lazy\"\n                    class=\"object-cover aspect-video w-full h-full\"\n                                            srcset=\"\n                            https:\/\/www.vallox.com\/app\/uploads\/2025\/12\/Lammontalteenotto_1694x953px_ENG-150x150.webp 150w,\n                            https:\/\/www.vallox.com\/app\/uploads\/2025\/12\/Lammontalteenotto_1694x953px_ENG-300x169.webp 300w,\n                            https:\/\/www.vallox.com\/app\/uploads\/2025\/12\/Lammontalteenotto_1694x953px_ENG-768x432.webp 768w,\n                            https:\/\/www.vallox.com\/app\/uploads\/2025\/12\/Lammontalteenotto_1694x953px_ENG-1024x576.webp 1024w,\n                            https:\/\/www.vallox.com\/app\/uploads\/2025\/12\/Lammontalteenotto_1694x953px_ENG.webp 1694w,\n                        \"\n                                        src=\"https:\/\/www.vallox.com\/app\/uploads\/2025\/12\/Lammontalteenotto_1694x953px_ENG-768x432.webp\"\n                    alt=\"\"\n                    \/>\n                <\/div>\n                    <\/div>\n    <\/div>\n<\/section>\n\n\n<section class=\"mb-8 w-full FiftyFiftyVisualWrapper\"  >\n    <div>\n        <div class=\"FiftyFiftyVisual relative flex w-full justify-between flex-col xl:flex-row-reverse\">\n            <div class=\"h-min\n                w-full xl:w-5\/12 3xl:w-7\/12\n                pt-4 sm:pt-8 md:pt-12 lg:pt-20  3xl:pt-20\n                px-0\n                pl-8\n            \">\n                <div class=\"bgElement calc(100vw \/ 2 * ((100vw - 1860px) * 0.1))\n                    absolute z-0 reversewrap\n                    bgElement-left\n                    \n                    right-0 left-0 xl:left-[50%] 3xl:left-[calc((40vw+((100vw-1860px)*0.07)))] 3xl:min-w-[1200px] xl:rounded-tl-xl\n                    top-0\n                    bottom-24 xl:bottom-0\n                                        bg-[rgba(165,185,196,0.3)]\"\n                ><\/div>\n                                    <h2 class=\"Title Title-right relative z-10\n                        flex flex-col justify-start\n                        text-black\n                        text-2xl lg:text-3xl 2xl:text-4xl\n                        leading-7 lg:leading-8\n                        font-bold\n                        mb-4\n                        \n                        xl:pl-8\">\n                        Smart defrosting automation\n                    <\/h2>\n                                                    <div class=\"Content Content-right flex flex-col justify-center relative z-10\n                        \n                        xl:pl-8\">\n                                                    <span class=\"Text text-black xl:text-custom-gray-dark pb-2\">\n                                <p>All Vallox ventilation units feature defrosting automation that is activated only when needed. The cell is defrosted with the heat in the extract air and the post-heater heats the supply air, while the electric heating is fully used for heating the home. The Vallox winter function prevents unnecessary defrosting cycles, so that a better annual efficiency is achieved.<\/p>\n\n                            <\/span>\n                                                                    <\/div>\n                            <\/div>\n\n                            <div class=\"ImgWrap ImgWrap-left mt-8 xl:mt-20\n                    w-full xl:w-7\/12 xl:max-w-[950px]\n                    z-10 bottom-0 rounded-tl-[5rem] rounded-br-[5rem] overflow-hidden left-0 aspect-video\n                    xl:justify-start\n                    -ml-8 md:-ml-16 lg:-ml-20 xl:ml-0\n                \">\n                    <img decoding=\"async\"\n                    loading=\"lazy\"\n                    class=\"object-cover aspect-video w-full h-full\"\n                                            srcset=\"\n                            https:\/\/www.vallox.com\/app\/uploads\/2025\/12\/Sulatusautomatiikka_1694x953px_LANG-150x150.webp 150w,\n                            https:\/\/www.vallox.com\/app\/uploads\/2025\/12\/Sulatusautomatiikka_1694x953px_LANG-300x169.webp 300w,\n                            https:\/\/www.vallox.com\/app\/uploads\/2025\/12\/Sulatusautomatiikka_1694x953px_LANG-768x432.webp 768w,\n                            https:\/\/www.vallox.com\/app\/uploads\/2025\/12\/Sulatusautomatiikka_1694x953px_LANG-1024x576.webp 1024w,\n                            https:\/\/www.vallox.com\/app\/uploads\/2025\/12\/Sulatusautomatiikka_1694x953px_LANG.webp 1694w,\n                        \"\n                                        src=\"https:\/\/www.vallox.com\/app\/uploads\/2025\/12\/Sulatusautomatiikka_1694x953px_LANG-768x432.webp\"\n                    alt=\"\"\n                    \/>\n                <\/div>\n                    <\/div>\n    <\/div>\n<\/section>\n\n\n    <div id=\"Section\" class=\"Block Section overflow-hidden w-full\">\n        <div class=\"Section-content relative max-w-[1088px] mx-auto w-full\">\n            \n\n<h2 class=\"wp-block-heading\">It is wise to use ventilation according to the need<\/h2>\n\n\n\n<p>Standard ventilation is dimensioned for each room according to use. Ventilation must be boosted when<br>the humidity and carbon dioxide content of indoor air increase. Lower efficiency is sufficient when the apartment is left empty. Demand-based ventilation adapts to the use of the room. It is also energy-efficient: when the efficiency is halved, the energy consumption of ventilation drops by more than half. Therefore, there is no need to turn ventilation off completely for energy saving reasons but use it according to the need. <\/p>\n\n\n\n<p>Automated MyVallox ventilation units ensure demand-based ventilation. The integrated carbon dioxide and humidity level sensors automatically boost ventilation, until the desired level is reached. This way, ventilation is never accidentally left too high.<\/p>\n\n\n    <\/div>\n<\/div>\n\n\n<section class=\"mb-8 w-full FiftyFiftyVisualWrapper\"  >\n    <div>\n        <div class=\"FiftyFiftyVisual relative flex w-full justify-between flex-col xl:flex-row\">\n            <div class=\"h-min\n                w-full xl:w-5\/12 3xl:w-7\/12\n                pt-4 sm:pt-8 md:pt-12 lg:pt-20  3xl:pt-20\n                px-0\n                \n            \">\n                <div class=\"bgElement calc(100vw \/ 2 * ((100vw - 1860px) * 0.1))\n                    absolute z-0 reversewrap\n                    bgElement-right\n                    left-0 right-0 xl:right-[50%] 3xl:right-[calc((40vw-((100vw-1860px)*-0.03)))] 3xl:min-w-[1200px] xl:rounded-tr-xl\n                    \n                    top-0\n                    bottom-24 xl:bottom-0\n                                        bg-[rgba(165,185,196,0.3)]\"\n                ><\/div>\n                                    <h2 class=\"Title Title-left relative z-10\n                        flex flex-col justify-start\n                        text-black\n                        text-2xl lg:text-3xl 2xl:text-4xl\n                        leading-7 lg:leading-8\n                        font-bold\n                        mb-4\n                        xl:pr-8\n                        \">\n                        Mechanical or natural ventilation?\n                    <\/h2>\n                                                    <div class=\"Content Content-left flex flex-col justify-center relative z-10\n                        xl:pr-8\n                        \">\n                                                    <span class=\"Text text-black xl:text-custom-gray-dark pb-2\">\n                                <p>Mechanical ventilation only accounts for about ten per cent of all the electricity consumed. Similarly, in houses with natural or extraction ventilation, ventilation takes up roughly 20\u201340% of the energy used for heating. For this reason, the energy-efficiency of the ventilation system has a significant impact on the heating costs of the building.<\/p>\n<p>The calculation of the energy consumption of the household used as an example was based on a terraced<br \/>\nhome with two residents. In this house with district heating, the average annual electricity consumption is 4,100 kW.<\/p>\n\n                            <\/span>\n                                                                    <\/div>\n                            <\/div>\n\n                            <div class=\"ImgWrap ImgWrap-right mt-8 xl:mt-20\n                    w-full xl:w-7\/12 xl:max-w-[950px]\n                    z-10 bottom-0 rounded-tl-[5rem] rounded-br-[5rem] overflow-hidden right-0 aspect-video\n                    xl:justify-end\n                    ml-auto sm:-mr-2 md:-mr-12 lg:-mr-[4.5rem] xl:mr-0\n                \">\n                    <img decoding=\"async\"\n                    loading=\"lazy\"\n                    class=\"object-cover aspect-video w-full h-full\"\n                                            srcset=\"\n                            https:\/\/www.vallox.com\/app\/uploads\/2025\/12\/Ilmanvaihdon-energiankaytto_-1694x953px_ENG-150x150.webp 150w,\n                            https:\/\/www.vallox.com\/app\/uploads\/2025\/12\/Ilmanvaihdon-energiankaytto_-1694x953px_ENG-300x169.webp 300w,\n                            https:\/\/www.vallox.com\/app\/uploads\/2025\/12\/Ilmanvaihdon-energiankaytto_-1694x953px_ENG-768x432.webp 768w,\n                            https:\/\/www.vallox.com\/app\/uploads\/2025\/12\/Ilmanvaihdon-energiankaytto_-1694x953px_ENG-1024x576.webp 1024w,\n                            https:\/\/www.vallox.com\/app\/uploads\/2025\/12\/Ilmanvaihdon-energiankaytto_-1694x953px_ENG.webp 1694w,\n                        \"\n                                        src=\"https:\/\/www.vallox.com\/app\/uploads\/2025\/12\/Ilmanvaihdon-energiankaytto_-1694x953px_ENG-768x432.webp\"\n                    alt=\"\"\n                    \/>\n                <\/div>\n                    <\/div>\n    <\/div>\n<\/section>\n\n\n<section class=\"bg-[rgba(165,185,196,0.3)]\" >\n    <div class=\"FiftyFifty\n\n        relative\n        flex\n        justify-between\n        flex-col-reverse lg:flex-row-reverse\n    \">\n        <div class=\"w-full lg:w-1\/2 p-4 sm:p-8 md:p-12 lg:p-28 xl:p-32 sm:!px-8\">\n                            <h2 class=\"Title\n                    flex flex-col justify-start\n                    text-black\n                    text-lg sm:text-2xl md:text-xl xl:text-2xl 2xl:text-3xl\n                    font-bold leading-6 xl:leading-7\n                    mb-4\n                \">\n                    What should a builder know about ventilation design?\n                <\/h2>\n                                        <div class=\"flex flex-col justify-center\">\n                                            <span class=\"Text text-custom-gray-dark pb-2\">\n                            <div>Although creating a ventilation plan is the responsibility of the HVAC designer, it\u2019s good for the builder to be familiar with the topic as well. Read 8 tips for ventilation design.<\/div>\n\n                        <\/span>\n                                                            <div class=\"flex mt-6\">\n                        \n\n\n\n    <a\n        href=\"https:\/\/www.vallox.com\/en\/8-tips-for-designing-a-good-ventilation-system\/\"\n        alt=\"\"\n        target=\"\"\n        class=\"\n            cursor-pointer\n            \n            \n            inline-flex\n            border-black\n            border-2\n            hover:border-primary\n            hover:text-primary\n            group\n            hover:bg-custom-gray-blueish-light\n            font-semibold\n            px-4\n            py-2\n            rounded-full\n            self-baseline\n        \"\n    >\n        Read here\n        <span class=\"ml-2 w-3 h-auto fill-black group-hover:fill-primary flex justify-center items-center\"><svg clip-rule=\"evenodd\" fill-rule=\"evenodd\" stroke-linejoin=\"round\" stroke-miterlimit=\"2\" viewBox=\"0 0 24 24\" width=\"100%\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"m13.022 14.999v3.251c0 .412.335.75.752.75.188 0 .375-.071.518-.206 1.775-1.685 4.945-4.692 6.396-6.069.2-.189.312-.452.312-.725 0-.274-.112-.536-.312-.725-1.451-1.377-4.621-4.385-6.396-6.068-.143-.136-.33-.207-.518-.207-.417 0-.752.337-.752.75v3.251h-9.02c-.531 0-1.002.47-1.002 1v3.998c0 .53.471 1 1.002 1z\" fill-rule=\"nonzero\"\/><\/svg><\/span>\n    <\/a>\n                    <\/div>\n                                    <\/div>\n                    <\/div>\n\n                    <div class=\"\n                self-stretch justify-self-stretch\n                w-full lg:w-1\/2\n                relative flex justify-center\n                lg:justify-start\n             \">\n                <img decoding=\"async\"\n                loading=\"lazy\"\n                class=\"object-cover h-full w-full\"\n                                    srcset=\"\n                        https:\/\/www.vallox.com\/app\/uploads\/2025\/12\/Ilmanvaihdon-Suunnittelu_1694x953px-150x150.webp 150w,\n                        https:\/\/www.vallox.com\/app\/uploads\/2025\/12\/Ilmanvaihdon-Suunnittelu_1694x953px-300x169.webp 300w,\n                        https:\/\/www.vallox.com\/app\/uploads\/2025\/12\/Ilmanvaihdon-Suunnittelu_1694x953px-768x432.webp 768w,\n                        https:\/\/www.vallox.com\/app\/uploads\/2025\/12\/Ilmanvaihdon-Suunnittelu_1694x953px-1024x576.webp 1024w,\n                        https:\/\/www.vallox.com\/app\/uploads\/2025\/12\/Ilmanvaihdon-Suunnittelu_1694x953px.webp 1694w,\n                    \"\n                                src=\"https:\/\/www.vallox.com\/app\/uploads\/2025\/12\/Ilmanvaihdon-Suunnittelu_1694x953px-768x432.webp\"\n                alt=\"\"\n                \/>\n            <\/div>\n            <\/div>\n<\/section>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":3,"featured_media":27796,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[236],"tags":[237],"class_list":["post-27799","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-artikkelit-en","tag-yleinen-en"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>A Well designed ventilation system is energy-efficient - Vallox<\/title>\n<meta name=\"description\" content=\"A Well designed ventilation system is energy-efficient Ilmanvaihdon suunnittelu vaikuttaa kotisi energiatehokkuuteen ja sis\u00e4ilmaston laatuun. 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