{"id":5017,"date":"2026-03-23T10:00:26","date_gmt":"2026-03-23T09:00:26","guid":{"rendered":"https:\/\/alkion.eu\/service\/mereni-tesnosti-vzt\/"},"modified":"2026-09-15T12:16:58","modified_gmt":"2026-09-15T11:16:58","slug":"measuring-the-leakage","status":"publish","type":"service","link":"https:\/\/alkion.eu\/en\/service\/measuring-the-leakage\/","title":{"rendered":"Measuring the leakage"},"content":{"rendered":"<section id=\"service-intro-block_10f52c0cd8962e31df0603145f8b4194\" class=\"header-block service-intro-section section section--full c--white padding\">\r\n\t<div class=\"service-intro-section__bg-wrapper\"><img decoding=\"async\" src=\"https:\/\/alkion.eu\/wp-content\/uploads\/2026\/03\/tesneni-vzduchotechniky-1700x576.jpg\"\r\n\t\tsrcset=\"\r\n\t\t\t\t\t\thttps:\/\/alkion.eu\/wp-content\/uploads\/2026\/03\/tesneni-vzduchotechniky-70x24.jpg 70w,\r\n\t\t\thttps:\/\/alkion.eu\/wp-content\/uploads\/2026\/03\/tesneni-vzduchotechniky-150x51.jpg 150w,\r\n\t\t\thttps:\/\/alkion.eu\/wp-content\/uploads\/2026\/03\/tesneni-vzduchotechniky-190x64.jpg 190w,\r\n\t\t\thttps:\/\/alkion.eu\/wp-content\/uploads\/2026\/03\/tesneni-vzduchotechniky-300x102.jpg 350w,\r\n\t\t\thttps:\/\/alkion.eu\/wp-content\/uploads\/2026\/03\/tesneni-vzduchotechniky-400x136.jpg 400w,\r\n\t\t\thttps:\/\/alkion.eu\/wp-content\/uploads\/2026\/03\/tesneni-vzduchotechniky-470x159.jpg 470w,\r\n\t\t\thttps:\/\/alkion.eu\/wp-content\/uploads\/2026\/03\/tesneni-vzduchotechniky-550x186.jpg 550w,\r\n\t\t\thttps:\/\/alkion.eu\/wp-content\/uploads\/2026\/03\/tesneni-vzduchotechniky-768x260.jpg 768w,\r\n\t\t\thttps:\/\/alkion.eu\/wp-content\/uploads\/2026\/03\/tesneni-vzduchotechniky-1024x347.jpg 900w,\r\n\t\t\thttps:\/\/alkion.eu\/wp-content\/uploads\/2026\/03\/tesneni-vzduchotechniky-1440x488.jpg 1440w,\r\n\t\t\thttps:\/\/alkion.eu\/wp-content\/uploads\/2026\/03\/tesneni-vzduchotechniky-1700x576.jpg 1700w\"\r\n\t\tsizes=\"100vw\"\r\n\t\tclass=\"service-intro-section__bg-image\"\r\n\t\talt=\"Alkion - Measuring the leakage\"\r\n\t\tfetchpriority=\"high\"\r\n\t\twidth=\"2306\"\r\n\t\theight=\"915\"\r\n\t><\/div>\r\n\t<div class=\"service-intro grid-x width width--general\">\r\n\t\t<div class=\"small-12 medium-6\">\r\n\t\t\t\t\t\t<header class=\"service-intro__header grid-x\">\r\n\t\t\t\t\t\t\t\t\t<div class=\"service-intro__icon cell shrink\" style=\"padding-right: 20px;\">\r\n\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/alkion.eu\/wp-content\/uploads\/2022\/08\/mereni_tesnosti_intro.svg\"\r\n\t\t\t\t\t\t\tsrcset=\"\r\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\thttps:\/\/alkion.eu\/wp-content\/uploads\/2022\/08\/mereni_tesnosti_intro.svg 150w,\r\n\t\t\t\t\t\t\t\thttps:\/\/alkion.eu\/wp-content\/uploads\/2022\/08\/mereni_tesnosti_intro.svg 190w,\r\n\t\t\t\t\t\t\t\thttps:\/\/alkion.eu\/wp-content\/uploads\/2022\/08\/mereni_tesnosti_intro.svg 350w,\r\n\t\t\t\t\t\t\t\thttps:\/\/alkion.eu\/wp-content\/uploads\/2022\/08\/mereni_tesnosti_intro.svg 400w,\r\n\t\t\t\t\t\t\t\thttps:\/\/alkion.eu\/wp-content\/uploads\/2022\/08\/mereni_tesnosti_intro.svg 470w,\r\n\t\t\t\t\t\t\t\thttps:\/\/alkion.eu\/wp-content\/uploads\/2022\/08\/mereni_tesnosti_intro.svg 550w,\r\n\t\t\t\t\t\t\t\thttps:\/\/alkion.eu\/wp-content\/uploads\/2022\/08\/mereni_tesnosti_intro.svg 768w,\r\n\t\t\t\t\t\t\t\thttps:\/\/alkion.eu\/wp-content\/uploads\/2022\/08\/mereni_tesnosti_intro.svg 900w,\r\n\t\t\t\t\t\t\t\thttps:\/\/alkion.eu\/wp-content\/uploads\/2022\/08\/mereni_tesnosti_intro.svg 1440w,\r\n\t\t\t\t\t\t\t\thttps:\/\/alkion.eu\/wp-content\/uploads\/2022\/08\/mereni_tesnosti_intro.svg 1700w\"\r\n\t\t\t\t\t\t\tsizes=\"\r\n\t\t\t\t\t\t\t\t120px\"\r\n\t\t\t\t\t\t\tclass=\"medium-4 small-6 align-self-middle text-right\"\r\n\t\t\t\t\t\t\talt=\"Measuring the leakage\"\r\n\t\t\t\t\t\t\twidth=\"136\"\r\n\t\t\t\t\t\t\theight=\"131\"\r\n\t\t\t\t\t\t>\r\n\t\t\t\t\t<\/div>\r\n\t\t\t\t\t\t\t\t<h1 class=\"service-intro__heading cell auto no-decor\">Measuring the leakage<\/h1>\r\n\t\t\t<\/header>\r\n\t\t\t\t\t\t\t<div class=\"section__paragraph width--thin no-padding\"><p>Do you need to verify that your newly installed HVAC system meets the designed airtightness class, or are you looking for ways to reduce operating costs? We will test the airtightness of your system, pinpoint any leakage areas, and issue an official protocol that fully complies with engineering standards and project handover requirements.<\/p>\n<\/div>\r\n\t\t\t\t\t\t\t\t\t\t\t\t\t<footer class=\"small-12\">\r\n\t\t\t\t\t\t\t\t\t<a  href=\"#jak-zacit\"\n\t\t\t\t\tclass=\"button button--arrow-right\"\n\t\t\t\t>\n\t\t\t\t\tLearn more\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<a href=\"https:\/\/alkion.eu\/en\/contact\/\"\n\t\t\t\t class=\"button button--secondary button--arrow-right\"\n\t\t\t>\n\t\t\t\tI am interested in the leakage test\t\t\t<\/a>\t\t\t\t<\/footer>\r\n\t\t\t\t\t<\/div>\r\n\t\t<div class=\"service-intro__image small-12 medium-6 grid-x align-center align-middle\">\r\n\t\t\t\t\t<\/div>\r\n\t<\/div>\r\n<\/section>\n\n\t<section data-block-type=\"card-centered\" id=\"jak-zacit\" class=\"boxes-section width width--general grid-x grid-padding-x align-middle margin--top margin--bottom-2x padding text-center\">\n\t\t<div class=\"small-12\">\n\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"section__claim\">How to Get Started<\/div>\n\t\t\t\t\t\t\t\t\t\t\t<h2 class=\"text-center section__title\">When and how is HVAC testing and validation performed?<\/h2>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"text-center section__paragraph\"><p>HVAC ductwork leak testing and validation can be performed during various stages of construction and building operation. This includes quality control checks during the installation of new ductwork, quality verification for construction management or the investor&#8217;s&nbsp;technical supervisor, as well as during the refurbishment or retrofit of air handling units (AHUs).<\/p>\n<\/div>\n\t\t\t\t\t<\/div>\n\t\t<div class=\"grid-x boxes small-12\">\n\t\t\t\t\t\t\t<div class=\"boxes__item box cell small-12 medium-4 grid-y padding-05x\">\n\t\t\t\t\t\t\t\t\t\t\t<div class=\"box__icon-wrapper box__icon-wrapper--m align-self-middle\">\n\t\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/alkion.eu\/wp-content\/uploads\/2021\/05\/ikony-flexibilita-1.png\" alt=\"In-Construction Quality Control\" width=\"112\" height=\"109\" loading=\"lazy\" class=\"box__icon\">\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<h3 class=\"box__title no-decor\">In-Construction Quality Control<\/h3>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<p class=\"box__text\">We test designated inspection sections to verify the quality of the installation.<\/p>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"boxes__item box cell small-12 medium-4 grid-y padding-05x\">\n\t\t\t\t\t\t\t\t\t\t\t<div class=\"box__icon-wrapper box__icon-wrapper--m align-self-middle\">\n\t\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/alkion.eu\/wp-content\/uploads\/2021\/01\/ikony-zkusenosti.png\" alt=\"Validation Prior to Final Inspection\" width=\"112\" height=\"109\" loading=\"lazy\" class=\"box__icon\">\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<h3 class=\"box__title no-decor\">Validation Prior to Final Inspection<\/h3>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<p class=\"box__text\">We verify HVAC airtightness and issue an official protocol for construction management or the investor.<\/p>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<div class=\"boxes__item box cell small-12 medium-4 grid-y padding-05x\">\n\t\t\t\t\t\t\t\t\t\t\t<div class=\"box__icon-wrapper box__icon-wrapper--m align-self-middle\">\n\t\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/alkion.eu\/wp-content\/uploads\/2021\/05\/ikony-rychlost-1.png\" alt=\"System Retrofits and Refurbishment\" width=\"112\" height=\"109\" loading=\"lazy\" class=\"box__icon\">\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<h3 class=\"box__title no-decor\">System Retrofits and Refurbishment<\/h3>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<p class=\"box__text\">We determine system parameters prior to commencing the retrofit.<\/p>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t<\/section>\n\n\n<section id=\"jak-aeroseal-funguje\" class=\"column-2-image section margin--bottom--2x grid-x\">\n\t\n\t<div class=\"column-2-image__content small-12 medium-6 grid-x align-middle pd-right\">\n\t\t<div>\n\t\t\t<div class=\"section__claim\">Technology<\/div>\n\t\t\t<h2>How the Testing Works<\/h2><div class=\"section__paragraph el--shifted\"><p>For airtightness testing of HVAC systems, we use certified instruments with laboratory calibration. The device is connected to a&nbsp;designated ductwork section, typically spanning several dozen square meters. The section is then pressurized to the operating pressure (e.g., 250 or 400 Pa), and air leakage is measured over a&nbsp;5-minute period. These leak rates are subsequently converted into a&nbsp;leakage percentage and the corresponding airtightness class in liters per second.<br \/>\nTesting is standardly performed in compliance with applicable engineering standards. Based on the overall size of the building, we select several ductwork sections for validation. We rarely test just a&nbsp;single section, ensuring we can accurately extrapolate the measured data across the entire system.<\/p>\n<h4>Key Considerations<\/h4>\n<ul>\n<li>We use calibrated and certified instruments<\/li>\n<li>Airtightness is tested in compliance with applicable standards<\/li>\n<li>We provide a&nbsp;protocol that clearly states the measured values and results<\/li>\n<li>If necessary, we propose corrective measures to remedy excessive leakage rates<\/li>\n<\/ul>\n<\/div>\t\t<\/div>\n\t<\/div>\n\n\t\t\t<div class=\"small-12 medium-6 grid-x align-middle\">\n\t\t\t<figure class=\"column-2-image__image\">\n\t\t\t\t\t\t<img decoding=\"async\" src=\"https:\/\/alkion.eu\/wp-content\/uploads\/2024\/04\/foto-aeroseal-schema-768x685.png\"\n\t\t\t\t\t\t\tsrcset=\"\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\thttps:\/\/alkion.eu\/wp-content\/uploads\/2024\/04\/foto-aeroseal-schema-300x268.png 350w,\n\t\t\t\t\t\t\t\thttps:\/\/alkion.eu\/wp-content\/uploads\/2024\/04\/foto-aeroseal-schema-400x357.png 400w,\n\t\t\t\t\t\t\t\thttps:\/\/alkion.eu\/wp-content\/uploads\/2024\/04\/foto-aeroseal-schema-470x419.png 470w,\n\t\t\t\t\t\t\t\thttps:\/\/alkion.eu\/wp-content\/uploads\/2024\/04\/foto-aeroseal-schema-550x490.png 550w,\n\t\t\t\t\t\t\t\thttps:\/\/alkion.eu\/wp-content\/uploads\/2024\/04\/foto-aeroseal-schema-768x685.png 768w,\n\t\t\t\t\t\t\t\thttps:\/\/alkion.eu\/wp-content\/uploads\/2024\/04\/foto-aeroseal-schema-1024x913.png 900w,\n\t\t\t\t\t\t\t\thttps:\/\/alkion.eu\/wp-content\/uploads\/2024\/04\/foto-aeroseal-schema-1440x1284.png 1440w,\n\t\t\t\t\t\t\t\thttps:\/\/alkion.eu\/wp-content\/uploads\/2024\/04\/foto-aeroseal-schema.png 1700w\"\n\t\t\t\t\t\t\tsizes=\"auto, 100vw\"\n\t\t\t\t\t\t\tclass=\"\"\n\t\t\t\t\t\t\talt=\"Measuring the leakage\"\n\t\t\t\t\t\t\tloading=\"lazy\"\n\t\t\t\t\t\t\twidth=\"1600\"\n\t\t\t\t\t\t\theight=\"1200\"\n\t\t\t\t\t\t>\n\t\t\t\t\t<\/figure>\t\t<\/div>\n\t<\/section>\n\n<section id=\"slider-card-block_33934dee99a8ed4c651a815144772629\" data-id=\"slider-card-block_33934dee99a8ed4c651a815144772629\" class=\"gt-block slider-card  margin--top-2x margin--bottom-2x\">\n    <div class=\"content width width--general align-middle\">\n                \n        <div class=\"items\">\n            <article id=\"slider-card-block_33934dee99a8ed4c651a815144772629_slide_1\" data-number=\"1\"><div class=\"text\"><div><div class=\"claim\">What We Offer<\/div><h2 class=\"title\">01 Testing of Small-Scale Systems<\/h2><p>For airtightness testing of small-scale systems up to 20 m\u00b2, we utilize the Wohler DP700, which provides the high sensitivity required to detect even minor leak rates down to units of liters per second. These types of leaks frequently occur, for example, in apartment building risers.<\/p>\n<a href=\"\/en\/contact\/\" class=\"button button--arrow-right\">Request Testing<\/a><\/div><\/div><!-- \/.text --><div class=\"image\"><span>01<\/span><\/div><!-- \/.image --><\/article><article id=\"slider-card-block_33934dee99a8ed4c651a815144772629_slide_2\" data-number=\"2\"><div class=\"text\"><div><div class=\"claim\">What We Offer<\/div><h2 class=\"title\">02 Testing of Large-Scale Systems<\/h2><p>If you need to test the airtightness of a&nbsp;large section or an entire system\u2014for example, prior to a&nbsp;retrofit or refurbishment\u2014we utilize the Euroseal system. It is capable of pressurizing several hundred square meters of ductwork or measuring substantial leak rates in smaller sections. Equipped with a&nbsp;high-capacity fan, it can accurately measure air leakage even when it reaches dozens of percent of the total air volume.<\/p>\n<a href=\"\/en\/contact\/\" class=\"button button--arrow-right\">Request Testing<\/a><\/div><\/div><!-- \/.text --><div class=\"image\"><img loading=\"lazy\" decoding=\"async\" width=\"330\" height=\"330\" src=\"https:\/\/alkion.eu\/wp-content\/uploads\/2026\/03\/unnamed-2-1.jpg\" class=\"attachment-large size-large\" alt=\"\" srcset=\"https:\/\/alkion.eu\/wp-content\/uploads\/2026\/03\/unnamed-2-1.jpg 330w, https:\/\/alkion.eu\/wp-content\/uploads\/2026\/03\/unnamed-2-1-300x300.jpg 300w, https:\/\/alkion.eu\/wp-content\/uploads\/2026\/03\/unnamed-2-1-150x150.jpg 150w, https:\/\/alkion.eu\/wp-content\/uploads\/2026\/03\/unnamed-2-1-70x70.jpg 70w, https:\/\/alkion.eu\/wp-content\/uploads\/2026\/03\/unnamed-2-1-190x190.jpg 190w\" sizes=\"auto, (max-width: 330px) 100vw, 330px\" \/><span>02<\/span><\/div><!-- \/.image --><\/article><article id=\"slider-card-block_33934dee99a8ed4c651a815144772629_slide_3\" data-number=\"3\"><div class=\"text\"><div><div class=\"claim\">What We Offer<\/div><h2 class=\"title\">03 Protocols and Recommendations<\/h2><p>Following the testing, we will provide you with a&nbsp;detailed protocol that clearly specifies the size of the tested section and the extent of the leakage. This data includes leak rates in liters per second, leakage percentages, and a&nbsp;conversion into the total leakage area.<br \/>\nThe leakage percentages and liters per second clearly demonstrate the measured airtightness class. Meanwhile, the conversion into the total leakage area in cm\u00b2 provides a&nbsp;clear visual illustration of the magnitude of the issue within the HVAC system.<\/p>\n<a href=\"\/en\/contact\/\" class=\"button button--arrow-right\">Request Testing<\/a><\/div><\/div><!-- \/.text --><div class=\"image\"><img loading=\"lazy\" decoding=\"async\" width=\"512\" height=\"390\" src=\"https:\/\/alkion.eu\/wp-content\/uploads\/2026\/03\/unnamed.png\" class=\"attachment-large size-large\" alt=\"\" srcset=\"https:\/\/alkion.eu\/wp-content\/uploads\/2026\/03\/unnamed.png 512w, https:\/\/alkion.eu\/wp-content\/uploads\/2026\/03\/unnamed-300x229.png 300w, https:\/\/alkion.eu\/wp-content\/uploads\/2026\/03\/unnamed-150x114.png 150w, https:\/\/alkion.eu\/wp-content\/uploads\/2026\/03\/unnamed-70x53.png 70w, https:\/\/alkion.eu\/wp-content\/uploads\/2026\/03\/unnamed-190x145.png 190w, https:\/\/alkion.eu\/wp-content\/uploads\/2026\/03\/unnamed-400x305.png 400w, https:\/\/alkion.eu\/wp-content\/uploads\/2026\/03\/unnamed-470x358.png 470w\" sizes=\"auto, (max-width: 512px) 100vw, 512px\" \/><span>03<\/span><\/div><!-- \/.image --><\/article>        <\/div><!-- \/.items -->\n        \n\t\t<div class=\"navigation-wrapper\">\n\t\t\t<div class=\"navigation\">\n\t\t\t\t<ul class=\"links\">\n                    <li><a href=\"#slider-card-block_33934dee99a8ed4c651a815144772629_slide_1\" data-number=\"1\" class=\"active\">01 Small-Scale Systems<\/a><\/li><li><a href=\"#slider-card-block_33934dee99a8ed4c651a815144772629_slide_2\" data-number=\"2\" class=\"\">02 Testing of Large-Scale Systems<\/a><\/li><li><a href=\"#slider-card-block_33934dee99a8ed4c651a815144772629_slide_3\" data-number=\"3\" class=\"\">03 Protocols and Recommendations<\/a><\/li>                <\/ul>\n\t\t\t\t<div class=\"arrows\">\n\t\t\t\t\t<button class=\"navigation__prev slick-prev\" title=\"Previous\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 14.81 7.88\"><line y1=\"3.94\" x2=\"13.39\" y2=\"3.94\" style=\"fill:none;stroke-miterlimit:10;stroke-width:2px\"\/><polyline points=\"10.16 0.71 13.39 3.94 10.16 7.18\" style=\"fill:none;stroke-miterlimit:10;stroke-width:2px\"\/><\/svg><\/button>\n\t\t\t\t\t<button class=\"navigation__next slick-next\" title=\"Next\"><\/button>\n\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/div>\n    <\/div><!-- \/.content -->\n<\/section>\n<script>\n    document.addEventListener( 'DOMContentLoaded', function () {\n        var $slider = jQuery( '#slider-card-block_33934dee99a8ed4c651a815144772629 .items' );\n        var $links = jQuery( '#slider-card-block_33934dee99a8ed4c651a815144772629 .links a' );\n\n        function update_active_link( current_slide ) {\n            $links.removeClass( 'active' );\n            $links.filter( '[data-number=\"' + ( current_slide + 1 ) + '\"]' ).addClass( 'active' );\n        }\n\n        $slider.on( 'init', function ( event, slick ) {\n            update_active_link( slick.currentSlide );\n        } );\n\n        $slider.on( 'afterChange', function ( event, slick, current_slide ) {\n            update_active_link( current_slide );\n        } );\n\n        $slider.slick({\n            dots: true,\n            fade: true,\n            infinite: true,\n            slidesToShow: 1,\n            appendDots: null,\n            prevArrow: jQuery( '#slider-card-block_33934dee99a8ed4c651a815144772629 .navigation__prev' ),\n            nextArrow: jQuery( '#slider-card-block_33934dee99a8ed4c651a815144772629 .navigation__next' ),\n        });\n\n        $links.on( 'click', function ( e ) {\n            e.preventDefault();\n\n            var slide_index = parseInt( jQuery( this ).attr( 'data-number' ), 10 ) - 1;\n\n            if ( ! 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I&nbsp;will not hesitate to recommend you in the future!&rdquor;<\/blockquote>\n\t\t\t\t\t<cite class=\"c--primary\"><span>Martin Steindl<\/span>, <span>Maintenance &#038; Facility Management<\/span>, <span>ENGEL, St. Valentin<\/span><\/cite>\n\t\t\t\t<\/div>\n\t\t\t<\/article>\n\t\t\t\t\t<article class=\"slick-slide padding--bottom-05x grid-x\">\n\t\t\t\t<div class=\"references-slider__icon cell\">\n\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"225\" height=\"225\" src=\"https:\/\/alkion.eu\/wp-content\/uploads\/2026\/08\/alkion-loga-na-web_ravensburger.svg\" class=\"attachment-medium size-medium\" alt=\"\" \/>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"references-slider__content cell\">\n\t\t\t\t\t<blockquote class=\"references-slider__text\">&ldquor;<span style=\"font-weight: 400;\">We appreciate long term cooperation, smooth and effective communication and high quality.<\/span>&rdquor;<\/blockquote>\n\t\t\t\t\t<cite class=\"c--primary\"><span>Petr Korec<\/span>, <span>Head of production 3D Puzzle<\/span>, <span>Ravensburger Karton s.r.o.<\/span><\/cite>\n\t\t\t\t<\/div>\n\t\t\t<\/article>\n\t\t\t\t\t<article class=\"slick-slide padding--bottom-05x grid-x\">\n\t\t\t\t<div class=\"references-slider__icon cell\">\n\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"225\" height=\"225\" src=\"https:\/\/alkion.eu\/wp-content\/uploads\/2026\/08\/alkion-loga-na-web_barum_logo.svg\" class=\"attachment-medium size-medium\" alt=\"\" \/>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"references-slider__content cell\">\n\t\t\t\t\t<blockquote class=\"references-slider__text\">&ldquor;<span style=\"font-weight: 400;\">During every summer and winter production break we deal with a&nbsp;large volume of maintenance work that needs to be done by dry ice blasting, including exhaust cleaning. Alkion offers two-shift operations with 16 technicians that complete the job in a&nbsp;very short time.<\/span>&rdquor;<\/blockquote>\n\t\t\t\t\t<cite class=\"c--primary\"><span>Stanislav Doraz\u00edn<\/span>, <span>Maintenance Manager<\/span>, <span>Continental Barum spol. s&nbsp;r.o.<\/span><\/cite>\n\t\t\t\t<\/div>\n\t\t\t<\/article>\n\t\t\t\t<\/div>\n\t\t<div class=\"grid-x references-slider__navigation-wrapper\">\n\t\t\t\t\t\t<div class=\"references-slider__navigation cell\">\n\t\t\t\t<div class=\"dots shrink\"><\/div>\n\t\t\t\t<div class=\"arrows cell auto text-right\">\n\t\t\t\t\t<button class=\"references-slider__prev slick-prev\" title=\"Previous\"><svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewBox=\"0 0 14.81 7.88\"><line y1=\"3.94\" x2=\"13.39\" y2=\"3.94\" style=\"fill:none;stroke-miterlimit:10;stroke-width:2px\"\/><polyline points=\"10.16 0.71 13.39 3.94 10.16 7.18\" style=\"fill:none;stroke-miterlimit:10;stroke-width:2px\"\/><\/svg><\/button>\n\t\t\t\t\t<button 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zm\u011bny\n\t\t\t\t\t\t}\n\t\t\t\t\t},\n\t\t\t\t]\n\t\t\t});\n\t\t});\n\t<\/script>\n\t<\/section>\n\n\n\n\n<figure class=\"wp-block-gallery has-nested-images columns-3 is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" data-id=\"1834\" src=\"https:\/\/alkion.eu\/wp-content\/uploads\/2021\/05\/dji-0298-nakladani-top-sikmomp4-snapshot-0012-2021-1024x576.jpg\" alt=\"\" class=\"wp-image-1834\" srcset=\"https:\/\/alkion.eu\/wp-content\/uploads\/2021\/05\/dji-0298-nakladani-top-sikmomp4-snapshot-0012-2021-1024x576.jpg 1024w, https:\/\/alkion.eu\/wp-content\/uploads\/2021\/05\/dji-0298-nakladani-top-sikmomp4-snapshot-0012-2021-300x169.jpg 300w, https:\/\/alkion.eu\/wp-content\/uploads\/2021\/05\/dji-0298-nakladani-top-sikmomp4-snapshot-0012-2021-150x84.jpg 150w, https:\/\/alkion.eu\/wp-content\/uploads\/2021\/05\/dji-0298-nakladani-top-sikmomp4-snapshot-0012-2021-768x432.jpg 768w, https:\/\/alkion.eu\/wp-content\/uploads\/2021\/05\/dji-0298-nakladani-top-sikmomp4-snapshot-0012-2021-1536x864.jpg 1536w, https:\/\/alkion.eu\/wp-content\/uploads\/2021\/05\/dji-0298-nakladani-top-sikmomp4-snapshot-0012-2021-2048x1152.jpg 2048w, https:\/\/alkion.eu\/wp-content\/uploads\/2021\/05\/dji-0298-nakladani-top-sikmomp4-snapshot-0012-2021-70x39.jpg 70w, https:\/\/alkion.eu\/wp-content\/uploads\/2021\/05\/dji-0298-nakladani-top-sikmomp4-snapshot-0012-2021-190x107.jpg 190w, https:\/\/alkion.eu\/wp-content\/uploads\/2021\/05\/dji-0298-nakladani-top-sikmomp4-snapshot-0012-2021-400x225.jpg 400w, https:\/\/alkion.eu\/wp-content\/uploads\/2021\/05\/dji-0298-nakladani-top-sikmomp4-snapshot-0012-2021-470x264.jpg 470w, https:\/\/alkion.eu\/wp-content\/uploads\/2021\/05\/dji-0298-nakladani-top-sikmomp4-snapshot-0012-2021-550x309.jpg 550w, https:\/\/alkion.eu\/wp-content\/uploads\/2021\/05\/dji-0298-nakladani-top-sikmomp4-snapshot-0012-2021-1440x810.jpg 1440w, https:\/\/alkion.eu\/wp-content\/uploads\/2021\/05\/dji-0298-nakladani-top-sikmomp4-snapshot-0012-2021-1700x956.jpg 1700w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" data-id=\"1087\" src=\"https:\/\/alkion.eu\/wp-content\/uploads\/2021\/05\/dsc-2676-lezeni-top-to-bottommov-snapshot-0024-20210225-110558-1024x576.jpg\" alt=\"\" class=\"wp-image-1087\" srcset=\"https:\/\/alkion.eu\/wp-content\/uploads\/2021\/05\/dsc-2676-lezeni-top-to-bottommov-snapshot-0024-20210225-110558-1024x576.jpg 1024w, https:\/\/alkion.eu\/wp-content\/uploads\/2021\/05\/dsc-2676-lezeni-top-to-bottommov-snapshot-0024-20210225-110558-300x169.jpg 300w, https:\/\/alkion.eu\/wp-content\/uploads\/2021\/05\/dsc-2676-lezeni-top-to-bottommov-snapshot-0024-20210225-110558-150x84.jpg 150w, https:\/\/alkion.eu\/wp-content\/uploads\/2021\/05\/dsc-2676-lezeni-top-to-bottommov-snapshot-0024-20210225-110558-768x432.jpg 768w, https:\/\/alkion.eu\/wp-content\/uploads\/2021\/05\/dsc-2676-lezeni-top-to-bottommov-snapshot-0024-20210225-110558-1536x864.jpg 1536w, https:\/\/alkion.eu\/wp-content\/uploads\/2021\/05\/dsc-2676-lezeni-top-to-bottommov-snapshot-0024-20210225-110558-2048x1152.jpg 2048w, https:\/\/alkion.eu\/wp-content\/uploads\/2021\/05\/dsc-2676-lezeni-top-to-bottommov-snapshot-0024-20210225-110558-70x39.jpg 70w, https:\/\/alkion.eu\/wp-content\/uploads\/2021\/05\/dsc-2676-lezeni-top-to-bottommov-snapshot-0024-20210225-110558-190x107.jpg 190w, https:\/\/alkion.eu\/wp-content\/uploads\/2021\/05\/dsc-2676-lezeni-top-to-bottommov-snapshot-0024-20210225-110558-400x225.jpg 400w, https:\/\/alkion.eu\/wp-content\/uploads\/2021\/05\/dsc-2676-lezeni-top-to-bottommov-snapshot-0024-20210225-110558-470x264.jpg 470w, https:\/\/alkion.eu\/wp-content\/uploads\/2021\/05\/dsc-2676-lezeni-top-to-bottommov-snapshot-0024-20210225-110558-550x309.jpg 550w, https:\/\/alkion.eu\/wp-content\/uploads\/2021\/05\/dsc-2676-lezeni-top-to-bottommov-snapshot-0024-20210225-110558-1440x810.jpg 1440w, https:\/\/alkion.eu\/wp-content\/uploads\/2021\/05\/dsc-2676-lezeni-top-to-bottommov-snapshot-0024-20210225-110558-1700x956.jpg 1700w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" data-id=\"620\" src=\"https:\/\/alkion.eu\/wp-content\/uploads\/2021\/01\/alkion-kancelar.jpg\" alt=\"\" class=\"wp-image-620\"\/><\/figure>\n<\/figure>\n\n\n<section id=\"faqs-block_86711fe2d1aed7dbb49b6ca85275bf24\" data-id=\"faqs-block_86711fe2d1aed7dbb49b6ca85275bf24\" class=\"gt-block faqs width width--general align-middle margin--top margin--bottom-2x padding text-center\">\r\n    <div class=\"text\">\r\n        <h2 class=\"section__title text-center\">FAQ<\/h2><p>Didn\u2019t find what you were looking for? Check out our FAQ, or give us a&nbsp;call or send us an email right away!<\/p>\n    <\/div>\r\n\r\n    <div class=\"faqs-items\">\r\n                        <div class=\"faq-item\">\r\n                    <div class=\"faq-item__header\">\r\n                        <div class=\"btn-plus\"><\/div>\r\n                        <h4 class=\"no-decor\">Are there any laws or standards that require the cleaning of ventilation ductwork?<\/h4>\r\n                    <\/div>\r\n                    <div class=\"faq-item__content\">\r\n                        <p>There is a&nbsp;non-binding technical standard, EN 15780, which addresses the cleanliness of ventilation ductwork in residential areas, and we strictly follow it in our projects. However, there is currently no legally binding regulation that mandates duct cleaning.<\/p>\n                    <\/div>\r\n                <\/div>\r\n                                <div class=\"faq-item\">\r\n                    <div class=\"faq-item__header\">\r\n                        <div class=\"btn-plus\"><\/div>\r\n                        <h4 class=\"no-decor\">Do you hold any certifications as proof of expertise?<\/h4>\r\n                    <\/div>\r\n                    <div class=\"faq-item__content\">\r\n                        <p>Yes, we hold the international ASCS (Air System Cleaning Specialist) certification, awarded by the North American association NADCA (www.nadca.com). We also hold a&nbsp;certificate from the German Association of Engineers (Verein Deutscher Ingenieure), specifically VDI 6022-B, which also defines the methodology for ventilation ductwork cleaning.<\/p>\n                    <\/div>\r\n                <\/div>\r\n                                <div class=\"faq-item\">\r\n                    <div class=\"faq-item__header\">\r\n                        <div class=\"btn-plus\"><\/div>\r\n                        <h4 class=\"no-decor\">Is it possible to perform duct disinfection without prior cleaning?<\/h4>\r\n                    <\/div>\r\n                    <div class=\"faq-item__content\">\r\n                        <p>Disinfection is only effective when performed on clean surfaces. If a&nbsp;surface\u2014such as the inside of a&nbsp;duct\u2014is contaminated, the disinfection will not achieve the desired effect, as bacteria or viruses can survive deeper within the debris. Therefore, performing disinfection without prior cleaning is only feasible in newly constructed buildings up to approximately 10 years old; otherwise, we strictly recommend cleaning before applying any disinfectant.<\/p>\n                    <\/div>\r\n                <\/div>\r\n                    <\/div>\r\n<\/section>\r\n\r\n\n\n\r\n<section id=\"kontakt\" class=\"contact-person width margin--top-2x margin--bottom-2x\">\r\n\t<div class=\"contact-person__inner grid-x width width--narrow-small\">\r\n\t\t<div class=\"small-12 medium-5 grid-x align-middle padding--right\">\r\n\t\t\t<div>\r\n\t\t\t\t\t\t\t\t\t<div class=\"section__claim\">We are here for you<\/div>\r\n\t\t\t\t\t\t\t\t\t\t\t\t\t<h2 class=\"section__title\">Are you interested in this service?<\/h2>\r\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div>\r\n\t\t\t\t\t<a href=\"https:\/\/alkion.eu\/cs\/kontakt\/\" class=\"button button--arrow-right\">Contact us<\/a>\t\t\t\t\t<\/div>\r\n\t\t\t\t\t\t\t<\/div>\r\n\t\t<\/div>\r\n\t\t<div class=\"person-wrapper small-12 medium-7 align-self-middle\">\r\n\t\t\t\t\t\t<figure class=\"grid-x align-middle \">\n\t\t\t<div class=\"shrink padding--left padding--right has--hepta show-for-medium\">\n\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"226\" height=\"300\" src=\"https:\/\/alkion.eu\/wp-content\/uploads\/2024\/01\/martin-pridal-226x300.png\" class=\"attachment-medium size-medium wp-post-image\" alt=\"\" srcset=\"https:\/\/alkion.eu\/wp-content\/uploads\/2024\/01\/martin-pridal-226x300.png 226w, https:\/\/alkion.eu\/wp-content\/uploads\/2024\/01\/martin-pridal-113x150.png 113w, https:\/\/alkion.eu\/wp-content\/uploads\/2024\/01\/martin-pridal-70x93.png 70w, https:\/\/alkion.eu\/wp-content\/uploads\/2024\/01\/martin-pridal-190x252.png 190w, https:\/\/alkion.eu\/wp-content\/uploads\/2024\/01\/martin-pridal.png 241w\" sizes=\"auto, (max-width: 226px) 100vw, 226px\" \/>\t\t\t\t\t\t\t<\/div>\n\t\t\t<div class=\"person person--horizontal auto cell\">\n\t\t\t\t<h4 class=\"person__name\">Martin P\u0159idal<\/h4>\n\t\t\t\t<div class=\"person__contact\">\n\t\t\t\t\t\t\t\t\t\t\t<div class=\"person__job\">Projektov\u00fd mana\u017eer<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a href=\"m&#97;&#105;&#108;&#116;o:&#109;arti&#110;&#46;&#112;r&#105;d&#97;l&#64;&#97;l&#107;&#105;&#111;&#110;.eu\" class=\"email\"><span id=\"dac66119888d711c1527c2ff03676278\"><\/span><script type=\"text\/javascript\">\r\n                    var t=[68,-30,65,-16,64,-7,66,-28,63,-6,61,-2,40,-5,54,-5,57,2,36,-1,50,-1,55,4,34,1,48,0,53,6,32,3,46,3,45,14,24,11,41,13,46,-8,43,6,43,7,52,-14,49,0,49,3,56,-18,53,-4,52,1,58,-20,55,-6,54,-6,65,-27,62,-5,60,-1,39,-4,53,-5,61,-2,40,-5,59,-7,66,-28,63,-6,61,-2,40,-5,54,-6,62,-3,41,-6,55,-7,62,-3,41,-6,55,-7,60,-1,39,-4,53,-4,53,6,32,3,46,3,45,14,24,11,41,13,46,-8,43,6,42,7,52,-14,49,0,49,6,53];\r\n                    var toAppend = '';\r\n                    for (var i=1; i<t.length; i++)\r\n                    {\r\n                    \ttoAppend+=String.fromCharCode(t[i]+t[i-1]);\r\n                    }\r\n                    document.getElementById('dac66119888d711c1527c2ff03676278').innerHTML = toAppend;\r\n                <\/script><noscript>Please enable Javascript to see this field.<\/noscript><\/a>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<br><a href=\"te&#108;:+&#52;207&#55;774&#51;&#56;&#54;&#51;\" class=\"phone\"><span id=\"6b7b3058e082c343d589d4edcc59a5e8\"><\/span><script type=\"text\/javascript\">\r\n                    var t=[212,-174,209,-157,208,-149,187,-152,205,-155,214,-176,211,-158,206,-147,185,-150,202,-146,205,-167,202,-151,201,-142,180,-145,198,-145,204,-166,201,-148,201,-142,180,-145,198,-145,204,-166,201,-150,200,-141,179,-144,197,-144,203,-165,200,-147,197,-138,176,-141,194,-145,204,-166,201,-150,200,-141,179,-144,197,-143,202,-164,199,-146,198,-139,177,-142,195,-146,205];\r\n                    var toAppend = '';\r\n                    for (var i=1; i<t.length; i++)\r\n                    {\r\n                    \ttoAppend+=String.fromCharCode(t[i]+t[i-1]);\r\n                    }\r\n                    document.getElementById('6b7b3058e082c343d589d4edcc59a5e8').innerHTML = toAppend;\r\n                <\/script><noscript>Please enable Javascript to see this field.<\/noscript><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t<\/figure>\n\t\t\t\t<\/div>\r\n\t<\/div>\r\n<\/section>","protected":false},"excerpt":{"rendered":"","protected":false},"featured_media":0,"template":"","class_list":["post-5017","service","type-service","status-publish","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.3 - 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