{"id":21819,"date":"2025-09-02T10:03:25","date_gmt":"2025-09-02T08:03:25","guid":{"rendered":"https:\/\/mag.ebmpapst.com\/en\/?p=21819"},"modified":"2025-09-15T11:35:42","modified_gmt":"2025-09-15T09:35:42","slug":"retrofit-in-air-technology-increasing-efficiency-through-intelligent-retrofitting","status":"publish","type":"post","link":"https:\/\/mag.ebmpapst.com\/en\/industries\/refrigeration-ventilation\/retrofit-in-air-technology-increasing-efficiency-through-intelligent-retrofitting_21819\/","title":{"rendered":"Retrofit in Air Tech\u00adnology: Increasing effi\u00adciency through intel\u00adli\u00adgent retro\u00adfitting"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\"><strong>What does retrofit in Air Tech\u00adnology <strong>mean<\/strong>?<\/strong><\/h2>\n\n\n\n<p>Retrofit refers to the retro\u00adfitting or modern\u00adiza\u00adtion of existing tech\u00adnical systems with the aim of improving their perfor\u00admance, effi\u00adciency or func\u00adtion\u00adality. In Air Tech\u00adnology, this typi\u00adcally means replacing old, some\u00adtimes belt-driven and there\u00adfore main\u00adte\u00adnance-inten\u00adsive AC fans with highly effi\u00adcient, main\u00adte\u00adnance-free EC fans with inte\u00adgrated control elec\u00adtronics, opti\u00admized air flow control and reduced noise levels.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Typical retrofit appli\u00adca\u00adtions<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Venti\u00adlation systems in office build\u00adings, schools and hospi\u00adtals<\/li>\n\n\n\n<li>Air condi\u00adtioners in trade and industry<\/li>\n\n\n\n<li>Refrig\u00ader\u00ada\u00adtion appli\u00adances in the food industry<\/li>\n<\/ul>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"960\" height=\"540\" src=\"https:\/\/ebmpapst-7237.kxcdn.com\/en\/files\/2025\/08\/Image1_Retrofit_old-new-comparison-960x540.webp\" alt class=\"wp-image-21821\" srcset=\"https:\/\/ebmpapst-7237.kxcdn.com\/en\/files\/2025\/08\/Image1_Retrofit_old-new-comparison-960x540.webp 960w, https:\/\/ebmpapst-7237.kxcdn.com\/en\/files\/2025\/08\/Image1_Retrofit_old-new-comparison-660x371.webp 660w, https:\/\/ebmpapst-7237.kxcdn.com\/en\/files\/2025\/08\/Image1_Retrofit_old-new-comparison-260x146.webp 260w, https:\/\/ebmpapst-7237.kxcdn.com\/en\/files\/2025\/08\/Image1_Retrofit_old-new-comparison-1536x864.webp 1536w, https:\/\/ebmpapst-7237.kxcdn.com\/en\/files\/2025\/08\/Image1_Retrofit_old-new-comparison-450x253.webp 450w, https:\/\/ebmpapst-7237.kxcdn.com\/en\/files\/2025\/08\/Image1_Retrofit_old-new-comparison-300x169.webp 300w, https:\/\/ebmpapst-7237.kxcdn.com\/en\/files\/2025\/08\/Image1_Retrofit_old-new-comparison.webp 1920w\" sizes=\"auto, (max-width: 960px) 100vw, 960px\"><figcaption class=\"wp-element-caption\">The new fans are supplied as a plug-and-play unit and combine higher air perfor\u00admance with low noise emis\u00adsion.  (Image | ebm-papst)<\/figcaption><\/figure>\n<\/div>\n\n\n<h2 class=\"wp-block-heading\"><strong>Advan\u00adtages of a retrofit<\/strong><\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Higher energy effi\u00adciency: <\/strong>EC fans achieve signif\u00adi\u00adcantly higher effi\u00adcien\u00adcies than tradi\u00adtional AC models. The inte\u00adgrated Speed control enables demand-driven oper\u00ada\u00adtion and reduces energy losses.<\/li>\n\n\n\n<li><strong><strong>Noise reduc\u00adtion<\/strong><\/strong>: Aero\u00addy\u00adnam\u00adi\u00adcally opti\u00admized fans such as the RadiPac C or compo\u00adnents such as AxiTop or Flow\u00adGrid can signif\u00adi\u00adcantly reduce noise emis\u00adsions \u2013 while at the same time increasing air perfor\u00admance.<\/li>\n\n\n\n<li><strong><strong><strong><strong>Simple inte\u00adgra\u00adtion<\/strong><\/strong><\/strong><\/strong>: Aero\u00addy\u00adnam\u00adi\u00adcally opti\u00admized fans such as the RadiPac C or compo\u00adnents such as AxiTop or Flow\u00adGrid can signif\u00adi\u00adcantly reduce noise emis\u00adsions \u2013 while at the same time increasing air perfor\u00admance.<\/li>\n\n\n\n<li><strong><strong><strong><strong><strong><strong><strong>Long service life and low main\u00adte\u00adnance<\/strong><\/strong><\/strong><\/strong><\/strong><\/strong><\/strong>: EC motors are char\u00adac\u00adter\u00adized by high reli\u00ada\u00adbility and low main\u00adte\u00adnance require\u00adments. The inte\u00adgrated elec\u00adtronics protect against over\u00adload and voltage fluc\u00adtu\u00ada\u00adtions.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading has-text-align-center\">The process of a typical retrofit:<\/h2>\n\n\n\n<figure class=\"wp-block-video alignwide\"><video height=\"1076\" style=\"aspect-ratio: 1920 \/ 1076;\" width=\"1920\" controls src=\"https:\/\/ebmpapst-7237.kxcdn.com\/en\/files\/2025\/08\/Image5_Retrofit_BeltDrive_animation.mp4\"><\/video><figcaption class=\"wp-element-caption\">Other venti\u00adlation system compo\u00adnents do not usually need to be replaced, but should be checked by a specialist. (Video | ebm-papst)<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading has-text-align-left\"><strong>Digital retrofit with NEXAIRA.Fit: effi\u00adciency meets connec\u00adtivity<\/strong><\/h2>\n\n\n\n<p>With NEXAIRA.Fit, ebm-papst offers a pioneering solu\u00adtion for digital retro\u00adfitting in Air Tech\u00adnology. The combi\u00adna\u00adtion of advanced fan tech\u00adnology, AI-supported services and cloud connec\u00adtivity not only enables simple commis\u00adsioning, but also intel\u00adli\u00adgent, predic\u00adtive main\u00adte\u00adnance. The hard\u00adware upgrade alone can save up to 50 % energy \u2013 and up to 70 % when combined with the digital services.<\/p>\n\n\n\n<div class=\"wp-block-group alignfull mgznkr-cta-whitepaper-digital-services\"><div class=\"wp-block-group__inner-container is-layout-constrained wp-block-group-is-layout-constrained\">\n<style>\n.mgznkr-cta-whitepaper-digital-services .alignwide.banner-width {\n  max-width: 100%;\n  width: 1240px;\n  margin: 0 auto;\n--mark-bgcolor: #00a633;\n--mark-color: white;\n}\n@media (max-width: 781px) {\n.mgznkr-cta-whitepaper-digital-services .wp-block-cover .wp-block-cover__image-background {\nobject-position: 17% 50%!important;\n}\n.mgznkr-column-spacer p {display: none; }\n}\n@media (min-width: 782px) {\n.mgznkr-column-spacer p a {\n  min-height: 290px;\n  min-width: 100%;\n  display: block;\n  border-radius: 50px;\nfont-size: 0;\n}\n}\n<\/style>\n\n\n\n<div style=\"height:32px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<div class=\"wp-block-cover\" style=\"min-height:350px;aspect-ratio:unset;\"><img decoding=\"async\" class=\"wp-block-cover__image-background wp-image-36224\" alt src=\"https:\/\/mag.ebmpapst.com\/de\/files\/2024\/11\/Banner-Digital-Services.jpg\" data-object-fit=\"cover\"><span aria-hidden=\"true\" class=\"wp-block-cover__background has-background-dim-0 has-background-dim\" style=\"background-color:#e0e6e6\"><\/span><div class=\"wp-block-cover__inner-container is-layout-constrained wp-block-cover-is-layout-constrained\">\n<div class=\"wp-block-columns alignwide banner-width is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:560px\">\n<h2 class=\"wp-block-heading mgznkr-click has-white-color has-text-color has-link-color wp-elements-2186fc9a9df73db88e84ea7c02be7ab5\" id=\"whitepaper-digital-services-head\" style=\"font-size:1.6em;text-transform:uppercase\"><mark><a href=\"https:\/\/www.ebmpapst.com\/de\/en\/campaigns\/industry-campaigns\/digital-services.html#download\" target=\"_blank\" rel=\"noreferrer noopener\">Free INFO PACKAGE<\/a><\/mark><\/h2>\n\n\n\n<div style=\"height:10px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h3 class=\"wp-block-heading no-margin-top\" style=\"font-size:1em\">The new age of air tech\u00adnology is here!<\/h3>\n\n\n\n<p>Meet the chal\u00adlenges of your industry with Digital Services. Find out more in our info package about how you can take your venti\u00adlation, air handling and refrig\u00ader\u00ada\u00adtion systems to a new level \u2013 thanks to <span class=\"noTypo\">digitalization<\/span>.<\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button is-style-fill mgznkr-click\" id=\"whitepaper-digital-services\"><a class=\"wp-block-button__link has-background has-custom-font-size wp-element-button\" href=\"https:\/\/www.ebmpapst.com\/de\/en\/campaigns\/industry-campaigns\/digital-services.html#download\" style=\"background-color:#0072bb;font-size:18px\" target=\"_blank\" rel=\"noreferrer noopener\">Benefit from digital solu\u00adtions now <i class=\"mgznkr-icon fa fa-chevron-right fas\"><\/i><\/a><\/div>\n<\/div>\n<\/div>\n\n\n\n<div class=\"wp-block-column mgznkr-column-spacer is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:55%\">\n<p class=\"mgznkr-click\" id=\"whitepaper-digital-services-img\"><a href=\"https:\/\/www.ebmpapst.com\/de\/en\/campaigns\/industry-campaigns\/digital-services.html#download\" target=\"_blank\" rel=\"noreferrer noopener\">Free Whitepaper about Digital Services by ebm-papst<\/a><\/p>\n<\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n<div style=\"height:36px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n<\/div><\/div>\n\n\n\n<p>At the heart of NEXAIRA.Fit is 360\u00b0 moni\u00adtoring, including reporting and alerting, which allows installers and service compa\u00adnies to plan main\u00adte\u00adnance inter\u00advals at an early stage and coor\u00addi\u00adnate service calls effi\u00adciently. The ebm-papst service app<strong> <\/strong>supports the fast and safe instal\u00adla\u00adtion, commis\u00adsioning and cloud connec\u00adtion of the fans. An inte\u00adgrated test run with auto\u00admatic docu\u00admen\u00adta\u00adtion ensures addi\u00adtional safety and trace\u00adability.<\/p>\n\n\n\n<p>The further improved return on invest\u00adment (RoI)<strong> <\/strong>compared to classic retrofit solu\u00adtions is partic\u00adu\u00adlarly note\u00adworthy: The digital exten\u00adsion not only increases energy effi\u00adciency, but also oper\u00ada\u00adtional reli\u00ada\u00adbility. This makes NEXAIRA.Fit the ideal tool for installers and service compa\u00adnies who want to imple\u00adment retrofit projects effi\u00adciently, trans\u00adpar\u00adently and without headaches.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"960\" height=\"540\" src=\"https:\/\/ebmpapst-7237.kxcdn.com\/en\/files\/2025\/08\/Image2_EN_Karte_NEXAIRA-Fit_EN-960x540.webp\" alt class=\"wp-image-21823\" srcset=\"https:\/\/ebmpapst-7237.kxcdn.com\/en\/files\/2025\/08\/Image2_EN_Karte_NEXAIRA-Fit_EN-960x540.webp 960w, https:\/\/ebmpapst-7237.kxcdn.com\/en\/files\/2025\/08\/Image2_EN_Karte_NEXAIRA-Fit_EN-660x371.webp 660w, https:\/\/ebmpapst-7237.kxcdn.com\/en\/files\/2025\/08\/Image2_EN_Karte_NEXAIRA-Fit_EN-260x146.webp 260w, https:\/\/ebmpapst-7237.kxcdn.com\/en\/files\/2025\/08\/Image2_EN_Karte_NEXAIRA-Fit_EN-1536x864.webp 1536w, https:\/\/ebmpapst-7237.kxcdn.com\/en\/files\/2025\/08\/Image2_EN_Karte_NEXAIRA-Fit_EN-450x253.webp 450w, https:\/\/ebmpapst-7237.kxcdn.com\/en\/files\/2025\/08\/Image2_EN_Karte_NEXAIRA-Fit_EN-300x169.webp 300w, https:\/\/ebmpapst-7237.kxcdn.com\/en\/files\/2025\/08\/Image2_EN_Karte_NEXAIRA-Fit_EN.webp 1920w\" sizes=\"auto, (max-width: 960px) 100vw, 960px\"><figcaption class=\"wp-element-caption\">With NEXAIRA.Fit, energy savings of up to 70% are possible. (graphic | ebm-papst)<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>RadiPac: The retrofit class among centrifugal fans<\/strong><\/h2>\n\n\n\n<p>The RadiPac product range<strong> <\/strong>from ebm-papst stands for powerful EC centrifugal fans. Thanks to their compact design, inte\u00adgrated elec\u00adtronics and high energy effi\u00adciency, they are ideal for retrofit appli\u00adca\u00adtions in air condi\u00adtioning and venti\u00adlation tech\u00adnology. RadiPac fans combine all the neces\u00adsary func\u00adtions in a \u201cpack\u00adaged\u201d system \u2013 from intel\u00adli\u00adgent control to opti\u00admized flow control \u2013 and thus enable easy inte\u00adgra\u00adtion into existing systems. A partic\u00adular advan\u00adtage for retrofit projects: Existing AC fans can be replaced with RadiPac EC models without costly modi\u00adfi\u00adca\u00adtions. <\/p>\n\n\n\n<p>The back\u00adward curved impellers ensure high static effi\u00adciency, while the EC tech\u00adnology guar\u00adan\u00adtees precise Speed control and quiet oper\u00ada\u00adtion. RadiPac fans are avail\u00adable in various mechan\u00adical designs \u2013 such as with a support bracket or cube design \u2013 and can be flex\u00adibly mounted in a vertical or hori\u00adzontal instal\u00adla\u00adtion posi\u00adtion. The combi\u00adna\u00adtion of high effi\u00adciency, easy instal\u00adla\u00adtion and robust design makes RadiPac fans the first choice for retrofit projects where reli\u00adable perfor\u00admance and fast imple\u00admen\u00adta\u00adtion are essen\u00adtial.<\/p>\n\n\n\n<figure class=\"wp-block-image alignwide size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"960\" height=\"540\" src=\"https:\/\/ebmpapst-7237.kxcdn.com\/en\/files\/2025\/08\/Image3_DigitalRetrofit_ebm-papst_Mulfingen-960x540.webp\" alt class=\"wp-image-21824\" srcset=\"https:\/\/ebmpapst-7237.kxcdn.com\/en\/files\/2025\/08\/Image3_DigitalRetrofit_ebm-papst_Mulfingen-960x540.webp 960w, https:\/\/ebmpapst-7237.kxcdn.com\/en\/files\/2025\/08\/Image3_DigitalRetrofit_ebm-papst_Mulfingen-660x371.webp 660w, https:\/\/ebmpapst-7237.kxcdn.com\/en\/files\/2025\/08\/Image3_DigitalRetrofit_ebm-papst_Mulfingen-260x146.webp 260w, https:\/\/ebmpapst-7237.kxcdn.com\/en\/files\/2025\/08\/Image3_DigitalRetrofit_ebm-papst_Mulfingen-1536x864.webp 1536w, https:\/\/ebmpapst-7237.kxcdn.com\/en\/files\/2025\/08\/Image3_DigitalRetrofit_ebm-papst_Mulfingen-450x253.webp 450w, https:\/\/ebmpapst-7237.kxcdn.com\/en\/files\/2025\/08\/Image3_DigitalRetrofit_ebm-papst_Mulfingen-300x169.webp 300w, https:\/\/ebmpapst-7237.kxcdn.com\/en\/files\/2025\/08\/Image3_DigitalRetrofit_ebm-papst_Mulfingen.webp 1920w\" sizes=\"auto, (max-width: 960px) 100vw, 960px\"><figcaption class=\"wp-element-caption\">The RadiPac C is ideal for retro\u00adfits, such as here in the ebm-papst venti\u00adlation system. The Flow\u00adGrid air-inlet guard mini\u00admizes noise. (Image | ebm-papst)<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Centrifugal and axial retrofit projects from prac\u00adtice<\/strong><\/h2>\n\n\n\n<p>Even if retrofit projects in Air Tech\u00adnology are predom\u00adi\u00adnantly imple\u00admented with centrifugal fans such as the RadiPac series, axial panel fans<strong> <\/strong>are also used \u2013 partic\u00adu\u00adlarly in refrig\u00ader\u00ada\u00adtion tech\u00adnology, for example in hori\u00adzontal condensers or condensing units, where compact designs and high air perfor\u00admance are required. Signif\u00adi\u00adcant effi\u00adciency gains can also be achieved here by replacing outdated AC fans with modern EC axial panel fans.<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Our retrofit at <strong>our own site in Mulfingen<\/strong> achieves <a href=\"https:\/\/mag.ebmpapst.com\/en\/industries\/refrigeration-ventilation\/ebm-papst-is-saving-energy-with-a-retrofit-at-its-locations_18301\/\">energy savings of up to 50%<\/a> \u2013 supple\u00admented by digital added value.<\/li>\n\n\n\n<li>The <strong>St. Franziskus Foun\u00adda\u00adtion in M\u00fcnster<\/strong> is replacing the venti\u00adlation systems in 14 hospi\u00adtals with new radial fans, saving <a href=\"https:\/\/mag.ebmpapst.com\/en\/industries\/refrigeration-ventilation\/retrofit-hospitals-franziskus-stiftung-muenster-fact-gmbh_20755\/\">920,000 kilo\u00adwatt hours<\/a> of energy.<\/li>\n\n\n\n<li>Chinese <strong>central air condi\u00adtioning manu\u00adfac\u00adturer KINFIT<\/strong> is modern\u00adizing its cooling towers with axial fans, thereby <a href=\"https:\/\/mag.ebmpapst.com\/en\/industries\/refrigeration-ventilation\/kinfit-achieving-green-cooling-towers-with-axiblade-ec-fans_18250\/\" data-type=\"link\" data-id=\"https:\/\/mag.ebmpapst.com\/en\/industries\/refrigeration-ventilation\/kinfit-achieving-green-cooling-towers-with-axiblade-ec-fans_18250\/\">halving energy consump\u00adtion<\/a>.<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"960\" height=\"540\" src=\"https:\/\/ebmpapst-7237.kxcdn.com\/en\/files\/2025\/08\/Image4_Retrofit_ebmpapst-960x540.webp\" alt class=\"wp-image-21825\" srcset=\"https:\/\/ebmpapst-7237.kxcdn.com\/en\/files\/2025\/08\/Image4_Retrofit_ebmpapst-960x540.webp 960w, https:\/\/ebmpapst-7237.kxcdn.com\/en\/files\/2025\/08\/Image4_Retrofit_ebmpapst-660x371.webp 660w, https:\/\/ebmpapst-7237.kxcdn.com\/en\/files\/2025\/08\/Image4_Retrofit_ebmpapst-260x146.webp 260w, https:\/\/ebmpapst-7237.kxcdn.com\/en\/files\/2025\/08\/Image4_Retrofit_ebmpapst-1536x864.webp 1536w, https:\/\/ebmpapst-7237.kxcdn.com\/en\/files\/2025\/08\/Image4_Retrofit_ebmpapst-450x253.webp 450w, https:\/\/ebmpapst-7237.kxcdn.com\/en\/files\/2025\/08\/Image4_Retrofit_ebmpapst-300x169.webp 300w, https:\/\/ebmpapst-7237.kxcdn.com\/en\/files\/2025\/08\/Image4_Retrofit_ebmpapst.webp 1920w\" sizes=\"auto, (max-width: 960px) 100vw, 960px\"><figcaption class=\"wp-element-caption\">A retrofit is also worth\u00adwhile for axial panel fans due to the maxi\u00admized effi\u00adciency. (Image | ebm-papst)<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Do\u00b4s and Don\u00b4ts for a successful retrofit<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>The five most impor\u00adtant Do\u00b4s<\/strong>:<\/h3>\n\n\n\n<div class=\"wp-block-group mgznkr-elements mgznkr-accordion\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<div class=\"wp-block-group accordion-item\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<h3 class=\"wp-block-heading\">1. VISIT THE SITE IN PERSON<\/h3>\n\n\n\n<div class=\"wp-block-group accordion-content\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<p>To be able to plan a retrofit, the company imple\u00admenting it must visit the site to get an idea of what needs to be done. This is the only way to deter\u00admine how the old fan can be removed from the building, and how the new ones can be installed. On site, it is also easier to deter\u00admine which trans\u00adport equip\u00adment can be used and is required.<\/p>\n<\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-group accordion-item\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<h3 class=\"wp-block-heading\">2. MAKE A PRECISE SCHEDULE<\/h3>\n\n\n\n<div class=\"wp-block-group accordion-content\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<p>Shop\u00adping centers or factory build\u00adings can often only pause their activity for a short time. There\u00adfore, it is neces\u00adsary to iden\u00adtify these poten\u00adtial time windows early on, and then plan the retrofit accord\u00adingly. A precise schedule should also be created for the conver\u00adsion itself<\/p>\n<\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-group accordion-item\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<h3 class=\"wp-block-heading\">3. DOCUMENT THE CURRENT SITUATION OF THE SYSTEM<\/h3>\n\n\n\n<div class=\"wp-block-group accordion-content\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<p>It is essen\u00adtial to docu\u00adment the desired target set-up of the system together with the customer before retro\u00adfitting. As the systems can some\u00adtimes be 20 to 30 years old, it is impor\u00adtant to discuss, for example, whether parts of the building have been added at a later stage or removed, as these may also need taking into consid\u00ader\u00ada\u00adtion, or not.<\/p>\n<\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-group accordion-item\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<h3 class=\"wp-block-heading\">4. ORDER MATERIALS IN ADVANCE<\/h3>\n\n\n\n<div class=\"wp-block-group accordion-content\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<p>If the retrofit is to be a success, there is no time to procure mate\u00adrials once the process has started. This applies in partic\u00adular if work is carried out on Sundays or public holi\u00addays. There\u00adfore, all mate\u00adrials should be procured early on.<\/p>\n<\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-group accordion-item\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<h3 class=\"wp-block-heading\">5. CHECK FOR CONTROL SYSTEM COMPATIBILITY<\/h3>\n\n\n\n<div class=\"wp-block-group accordion-content\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<p>Today, modern fans often have either an analog-based control system, using a 0-10 V signal, or are controlled via a ModBUS inter\u00adface. In this regard, it is impor\u00adtant to check whether these options are compat\u00adible with the condi\u00adtions on site. If this is not the case, a suit\u00adable inter\u00adface should be planned and imple\u00admented.<\/p>\n<\/div><\/div>\n<\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-group article-sidebox\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<figure class=\"wp-block-image size-full img-border\"><img loading=\"lazy\" decoding=\"async\" width=\"960\" height=\"442\" src=\"https:\/\/ebmpapst-7237.kxcdn.com\/en\/files\/2024\/10\/ebm-papst_PoC_landing-Page_retrofit_Mulfingen_header.jpg\" alt class=\"wp-image-20723\" style=\"aspect-ratio:1;object-fit:cover\" srcset=\"https:\/\/ebmpapst-7237.kxcdn.com\/en\/files\/2024\/10\/ebm-papst_PoC_landing-Page_retrofit_Mulfingen_header.jpg 960w, https:\/\/ebmpapst-7237.kxcdn.com\/en\/files\/2024\/10\/ebm-papst_PoC_landing-Page_retrofit_Mulfingen_header-660x304.jpg 660w, https:\/\/ebmpapst-7237.kxcdn.com\/en\/files\/2024\/10\/ebm-papst_PoC_landing-Page_retrofit_Mulfingen_header-260x120.jpg 260w, https:\/\/ebmpapst-7237.kxcdn.com\/en\/files\/2024\/10\/ebm-papst_PoC_landing-Page_retrofit_Mulfingen_header-450x207.jpg 450w, https:\/\/ebmpapst-7237.kxcdn.com\/en\/files\/2024\/10\/ebm-papst_PoC_landing-Page_retrofit_Mulfingen_header-300x138.jpg 300w\" sizes=\"auto, (max-width: 960px) 100vw, 960px\"><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Retro\u00adfitting fans<\/h3>\n\n\n\n<p>Rising costs, legally required reduc\u00adtion of CO<sub>2<\/sub> emis\u00adsions \u2013 <strong>retro\u00adfits provide a solu\u00adtion.<\/strong><\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button is-style-fill\"><a class=\"wp-block-button__link has-custom-font-size wp-element-button\" href=\"https:\/\/www.ebmpapst.com\/de\/en\/industries\/fanupgrade.html\" style=\"font-size:18px\" target=\"_blank\" rel=\"noreferrer noopener\">Learn more <i class=\"mgznkr-icon fa fa-chevron-right fas\"><\/i><\/a><\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>The five most impor\u00adtant Don\u2019ts<\/strong>:<\/h3>\n\n\n\n<div class=\"wp-block-group mgznkr-elements mgznkr-accordion\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<div class=\"wp-block-group accordion-item\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<h3 class=\"wp-block-heading\">1. FOCUS ONLY ON THE FAN<\/h3>\n\n\n\n<div class=\"wp-block-group accordion-content\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<p>A venti\u00adlation system is more than just the fan. There\u00adfore, both the whole system and the surrounding area should be incor\u00adpo\u00adrated into the plan\u00adning of the retrofit. This enables you to iden\u00adtify the overall func\u00adtion of the system and to take specific aspects, e.g. pollu\u00adtants in the exhaust air, into account.<\/p>\n<\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-group accordion-item\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<h3 class=\"wp-block-heading\">2. RELY TOO MUCH ON THE DOCUMENTATION<\/h3>\n\n\n\n<div class=\"wp-block-group accordion-content\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<p>Even if there is compre\u00adhen\u00adsive docu\u00admen\u00adta\u00adtion of the system, impor\u00adtant key points should be directly veri\u00adfied again. This can help to rule out the possi\u00adbility that para\u00adme\u00adters may have changed over time without being docu\u00admented.<\/p>\n<\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-group accordion-item\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<h3 class=\"wp-block-heading\">3. PLAN WITHOUT FUNDING<\/h3>\n\n\n\n<div class=\"wp-block-group accordion-content\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<p>If your fans are effi\u00adcient, the retrofit will pay for itself quickly. However, you can recoup the costs even faster if you make use of the many funding oppor\u00adtu\u00adni\u00adties avail\u00adable. You should not forget to apply for these and factor them in right from the start of the project.<\/p>\n<\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-group accordion-item\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<h3 class=\"wp-block-heading\">4. IGNORE DOCUMENTATION<\/h3>\n\n\n\n<div class=\"wp-block-group accordion-content\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<p>All of the steps in the project must be precisely docu\u00admented \u2013 from agreeing the target set-up through to energy consump\u00adtion before and after the retrofit. This helps all the parties involved, and often makes funding possible.<\/p>\n<\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-group accordion-item\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<h3 class=\"wp-block-heading\">5. ASSESS THE COSTS AND BENEFITS FOR THE SHORT TERM<\/h3>\n\n\n\n<div class=\"wp-block-group accordion-content\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<p>You should always look at the long term when assessing the cost of a retrofit project. Without a doubt, a retrofit costs money at the begin\u00adning. However, over time, oper\u00ada\u00adtors quickly recoup these costs and also save money on a day-to-day basis.<\/p>\n<\/div><\/div>\n<\/div><\/div>\n<\/div><\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>FAQ \u2013 Frequently asked ques\u00adtions about the retrofit<\/strong><\/h2>\n\n\n\n<div class=\"wp-block-group mgznkr-elements mgznkr-accordion\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<div class=\"wp-block-group accordion-item\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<h3 class=\"wp-block-heading\"><strong>What does a retrofit cost?<\/strong><\/h3>\n\n\n\n<div class=\"wp-block-group accordion-content\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<p>The costs vary depending on the appli\u00adca\u00adtion, but are usually amor\u00adtized within a few years through energy savings. Often even faster with digital solu\u00adtions.<\/p>\n<\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-group accordion-item\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<h3 class=\"wp-block-heading\"><strong><strong>Does the entire system have to be replaced?<\/strong><\/strong><\/h3>\n\n\n\n<div class=\"wp-block-group accordion-content\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<p>No. Retrofit means targeted retro\u00adfitting \u2013 it is usually suffi\u00adcient to replace indi\u00advidual compo\u00adnents such as fans or controls.<\/p>\n<\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-group accordion-item\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<h3 class=\"wp-block-heading\"><strong><strong>How long does the conver\u00adsion take?<\/strong><\/strong><\/h3>\n\n\n\n<div class=\"wp-block-group accordion-content\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<p>Thanks to customized solu\u00adtions, retro\u00adfitting is often possible within a few hours.<\/p>\n<\/div><\/div>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-group accordion-item\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<h3 class=\"wp-block-heading\"><strong><strong>What funding oppor\u00adtu\u00adni\u00adties are avail\u00adable?<\/strong><\/strong><\/h3>\n\n\n\n<div class=\"wp-block-group accordion-content\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<p>In many coun\u00adtries, there are subsidy programs for energy-effi\u00adcient modern\u00adiza\u00adtion. ebm-papst provides support in selecting suit\u00adable programs.<\/p>\n<\/div><\/div>\n<\/div><\/div>\n<\/div><\/div>\n\n\n\n<h2 class=\"wp-block-heading\"><strong>Conclu\u00adsion on retro\u00adfitting in Air Tech\u00adnology<\/strong><\/h2>\n\n\n\n<p>Retro\u00adfitting is a central building block for reli\u00adable Air Tech\u00adnology. With the intel\u00adli\u00adgent system solu\u00adtions from ebm-papst, existing systems can be made more effi\u00adcient, reli\u00adable, noise-opti\u00admized and future-proof \u2013 taking into account tech\u00adnical, economic and prac\u00adtical aspects.<\/p>\n\n\n\n<div class=\"wp-block-group mgznkr-color-box has-background\" style=\"background-color:#00a633\"><div class=\"wp-block-group__inner-container is-layout-flow wp-block-group-is-layout-flow\">\n<h3 class=\"wp-block-heading has-white-color has-text-color has-link-color wp-elements-633d3c4f8d4fbf8d14190e3bdf403c88\">Inter\u00adview with retrofit expert Ralf M\u00fchleck<\/h3>\n\n\n\n<div class=\"wp-block-columns are-vertically-aligned-center is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:26%\"><div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img decoding=\"async\" src=\"https:\/\/ebmpapst-7237.kxcdn.com\/de\/files\/2025\/08\/Retrofit-Ralf-Muehleck-02.webp\" alt class=\"wp-image-38555\" style=\"width:300px\"><\/figure>\n<\/div><\/div>\n\n\n\n<div class=\"wp-block-column is-vertically-aligned-center is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:74%\">\n<p class=\"has-white-color has-text-color has-link-color wp-elements-4010e2ec6d5897a63aba6adec229872b\"><strong>Ralf M\u00fchleck <\/strong>is Team Leader Commer\u00adcial Venti\u00adlation at ebm-papst and knows the right product for every project.<\/p>\n\n\n\n<div class=\"wp-block-buttons is-layout-flex wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button\"><a class=\"wp-block-button__link has-white-color has-text-color has-background has-link-color has-custom-font-size wp-element-button\" href=\"https:\/\/mag.ebmpapst.com\/en\/industries\/refrigeration-ventilation\/our-products-significantly-reduce-energy-costs_14818\/\" style=\"background-color:#0072bb;font-size:16px\">To the Inter\u00adview <i class=\"mgznkr-icon fa fa-chevron-right fas\"><\/i><\/a><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div><\/div>\n","protected":false},"excerpt":{"rendered":"<p>What does retrofit in Air Tech\u00adnology mean? Retrofit refers to the retro\u00adfitting or modern\u00adiza\u00adtion of existing tech\u00adnical systems with the aim of improving their perfor\u00admance, effi\u00adciency or func\u00adtion\u00adality. In Air Tech\u00adnology, this typi\u00adcally means replacing old, some\u00adtimes belt-driven and there\u00adfore main\u00adte\u00ad\u00adnance-inten\u00ad\u00adsive AC fans with highly effi\u00adcient, main\u00adte\u00ad\u00adnance-free EC fans with inte\u00adgrated control elec\u00adtronics, opti\u00admized air [\u2026]<\/p>\n","protected":false},"author":42,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"wp_typography_post_enhancements_disabled":false,"footnotes":""},"categories":[16,9],"tags":[],"class_list":["post-21819","post","type-post","status-publish","format-standard","hentry","category-fans","category-refrigeration-ventilation"],"acf":[],"_links":{"self":[{"href":"https:\/\/mag.ebmpapst.com\/en\/wp-json\/wp\/v2\/posts\/21819","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mag.ebmpapst.com\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mag.ebmpapst.com\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mag.ebmpapst.com\/en\/wp-json\/wp\/v2\/users\/42"}],"replies":[{"embeddable":true,"href":"https:\/\/mag.ebmpapst.com\/en\/wp-json\/wp\/v2\/comments?post=21819"}],"version-history":[{"count":34,"href":"https:\/\/mag.ebmpapst.com\/en\/wp-json\/wp\/v2\/posts\/21819\/revisions"}],"predecessor-version":[{"id":21932,"href":"https:\/\/mag.ebmpapst.com\/en\/wp-json\/wp\/v2\/posts\/21819\/revisions\/21932"}],"wp:attachment":[{"href":"https:\/\/mag.ebmpapst.com\/en\/wp-json\/wp\/v2\/media?parent=21819"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mag.ebmpapst.com\/en\/wp-json\/wp\/v2\/categories?post=21819"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mag.ebmpapst.com\/en\/wp-json\/wp\/v2\/tags?post=21819"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}