{"id":334,"date":"2026-02-27T12:51:47","date_gmt":"2026-02-27T11:51:47","guid":{"rendered":"https:\/\/rlt-retrofit.de\/retrofit-of-ventilation-systems\/"},"modified":"2026-05-28T12:43:05","modified_gmt":"2026-05-28T10:43:05","slug":"retrofit-of-ventilation-systems","status":"publish","type":"page","link":"https:\/\/rlt-retrofit.de\/en\/retrofit-of-ventilation-systems\/","title":{"rendered":"Retrofit for ventilation systems"},"content":{"rendered":"\t\t<div data-elementor-type=\"wp-page\" data-elementor-id=\"334\" class=\"elementor elementor-334 elementor-283\" data-elementor-post-type=\"page\">\n\t\t\t\t<div class=\"elementor-element elementor-element-f0090a3 e-flex e-con-boxed e-con e-parent\" data-id=\"f0090a3\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;gradient&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-402d1a1 e-con-full e-flex e-con e-child\" data-id=\"402d1a1\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-9b345a6 e-con-full e-flex e-con e-child\" data-id=\"9b345a6\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-6e09ddd elementor-widget elementor-widget-heading\" data-id=\"6e09ddd\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h1 class=\"elementor-heading-title elementor-size-default\">Retrofit for Ventilation Systems<br \/>\u2013 Modernize Efficiently<\/h1>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-04cf798 elementor-widget elementor-widget-text-editor\" data-id=\"04cf798\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\tFrom simple fan replacement to intelligent system control: We optimize your existing ventilation technology\u2014brand-independent and highly efficient.\t\t\t\t\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-d9fd1b8 e-con-full e-flex e-con e-child\" data-id=\"d9fd1b8\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-f43f964 e-con-full e-flex e-con e-child\" data-id=\"f43f964\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-bd0910d e-con-full e-flex e-con e-child\" data-id=\"bd0910d\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-8d08e16 elementor-align-left elementor-widget elementor-widget-button\" data-id=\"8d08e16\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/breuell-hilgenfeldt.de\/en\/contact\/\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-icon\">\n\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-paper-plane\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M476 3.2L12.5 270.6c-18.1 10.4-15.8 35.6 2.2 43.2L121 358.4l287.3-253.2c5.5-4.9 13.3 2.6 8.6 8.3L176 407v80.5c0 23.6 28.5 32.9 42.5 15.8L282 426l124.6 52.2c14.2 6 30.4-2.9 33-18.2l72-432C515 7.8 493.3-6.8 476 3.2z\"><\/path><\/svg>\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Have your retrofit checked now<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-292ece9 e-flex e-con-boxed e-con e-parent\" data-id=\"292ece9\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-227bea7 e-con-full e-flex e-con e-child\" data-id=\"227bea7\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-37a9d5d e-con-full e-flex e-con e-child\" data-id=\"37a9d5d\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-fd745ab elementor-widget elementor-widget-heading\" data-id=\"fd745ab\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Why modernize ventilation systems?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-b128c47 elementor-widget elementor-widget-text-editor\" data-id=\"b128c47\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p>Many ventilation systems in industry and commerce are mechanically in good condition but operate with outdated, unregulated fans. A <strong>retrofit of your ventilation system<\/strong> is the most economical method to massively reduce operating costs without having to replace the entire duct system or peripherals. <\/p><p>As an <strong>ebm-papst Service Center<\/strong>, we integrate state-of-the-art EC fans that not only consume less power but can also be continuously adjusted to actual demand.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-f9a8487 e-con-full e-flex e-con e-child\" data-id=\"f9a8487\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-f480e3b e-con-full e-flex e-con e-child\" data-id=\"f480e3b\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2ea8ac5 elementor-widget elementor-widget-heading\" data-id=\"2ea8ac5\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">up to 50%<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-fc7ce32 elementor-widget elementor-widget-text-editor\" data-id=\"fc7ce32\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\tlower electricity costs\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-73d40ba e-con-full e-flex e-con e-child\" data-id=\"73d40ba\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t<div class=\"elementor-element elementor-element-0c015b8 elementor-widget elementor-widget-heading\" data-id=\"0c015b8\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">BAFA-eligible<\/h3>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-c32eed9 elementor-widget elementor-widget-text-editor\" data-id=\"c32eed9\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\tGovernment funding available\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-bd19cf7 e-con-full e-flex e-con e-child\" data-id=\"bd19cf7\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-fe58674 e-con-full elementor-hidden-tablet elementor-hidden-mobile e-flex e-con e-child\" data-id=\"fe58674\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-48b237b elementor-widget elementor-widget-image\" data-id=\"48b237b\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"image.default\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<img fetchpriority=\"high\" decoding=\"async\" width=\"800\" height=\"566\" src=\"https:\/\/rlt-retrofit.de\/wp-content\/uploads\/2026\/02\/Retrofit-Titelbild-1024x724.jpeg\" class=\"attachment-large size-large wp-image-187\" alt=\"HVAC Retrofit System with EC Fans in an Industrial Environment\" srcset=\"https:\/\/rlt-retrofit.de\/wp-content\/uploads\/2026\/02\/Retrofit-Titelbild-1024x724.jpeg 1024w, https:\/\/rlt-retrofit.de\/wp-content\/uploads\/2026\/02\/Retrofit-Titelbild-300x212.jpeg 300w, https:\/\/rlt-retrofit.de\/wp-content\/uploads\/2026\/02\/Retrofit-Titelbild-768x543.jpeg 768w, https:\/\/rlt-retrofit.de\/wp-content\/uploads\/2026\/02\/Retrofit-Titelbild.jpeg 1280w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/>\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-a6c00e6 e-flex e-con-boxed e-con e-parent\" data-id=\"a6c00e6\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-eb9da43 e-con-full e-flex e-con e-child\" data-id=\"eb9da43\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-b66efbf elementor-widget elementor-widget-heading\" data-id=\"b66efbf\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Benefits of Retrofitting Ventilation Systems<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3f51556 elementor-widget elementor-widget-text-editor\" data-id=\"3f51556\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\tA retrofit is more than just a replacement. It&#8217;s an intelligent system upgrade. \t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-28acc3b e-con-full e-flex e-con e-child\" data-id=\"28acc3b\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-ea51597 e-con-full e-flex e-con e-child\" data-id=\"ea51597\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-33e9c7a elementor-view-default elementor-position-block-start elementor-mobile-position-block-start elementor-widget elementor-widget-icon-box\" data-id=\"33e9c7a\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon-box.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-icon-box-wrapper\">\n\n\t\t\t\t\t\t<div class=\"elementor-icon-box-icon\">\n\t\t\t\t<span  class=\"elementor-icon\">\n\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-cog\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M487.4 315.7l-42.6-24.6c4.3-23.2 4.3-47 0-70.2l42.6-24.6c4.9-2.8 7.1-8.6 5.5-14-11.1-35.6-30-67.8-54.7-94.6-3.8-4.1-10-5.1-14.8-2.3L380.8 110c-17.9-15.4-38.5-27.3-60.8-35.1V25.8c0-5.6-3.9-10.5-9.4-11.7-36.7-8.2-74.3-7.8-109.2 0-5.5 1.2-9.4 6.1-9.4 11.7V75c-22.2 7.9-42.8 19.8-60.8 35.1L88.7 85.5c-4.9-2.8-11-1.9-14.8 2.3-24.7 26.7-43.6 58.9-54.7 94.6-1.7 5.4.6 11.2 5.5 14L67.3 221c-4.3 23.2-4.3 47 0 70.2l-42.6 24.6c-4.9 2.8-7.1 8.6-5.5 14 11.1 35.6 30 67.8 54.7 94.6 3.8 4.1 10 5.1 14.8 2.3l42.6-24.6c17.9 15.4 38.5 27.3 60.8 35.1v49.2c0 5.6 3.9 10.5 9.4 11.7 36.7 8.2 74.3 7.8 109.2 0 5.5-1.2 9.4-6.1 9.4-11.7v-49.2c22.2-7.9 42.8-19.8 60.8-35.1l42.6 24.6c4.9 2.8 11 1.9 14.8-2.3 24.7-26.7 43.6-58.9 54.7-94.6 1.5-5.5-.7-11.3-5.6-14.1zM256 336c-44.1 0-80-35.9-80-80s35.9-80 80-80 80 35.9 80 80-35.9 80-80 80z\"><\/path><\/svg>\t\t\t\t<\/span>\n\t\t\t<\/div>\n\t\t\t\n\t\t\t\t\t\t<div class=\"elementor-icon-box-content\">\n\n\t\t\t\t\t\t\t\t\t<h3 class=\"elementor-icon-box-title\">\n\t\t\t\t\t\t<span  >\n\t\t\t\t\t\t\tManufacturer-independent\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/h3>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t<p class=\"elementor-icon-box-description\">\n\t\t\t\t\t\tWhether Wolf, GEA, Robatherm, or other brands\u2014we modernize any ventilation unit with precision-fit EC technology.\t\t\t\t\t<\/p>\n\t\t\t\t\n\t\t\t<\/div>\n\t\t\t\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-f1f4cf4 e-con-full e-flex e-con e-child\" data-id=\"f1f4cf4\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-e64ecc6 elementor-view-default elementor-position-block-start elementor-mobile-position-block-start elementor-widget elementor-widget-icon-box\" data-id=\"e64ecc6\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon-box.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-icon-box-wrapper\">\n\n\t\t\t\t\t\t<div class=\"elementor-icon-box-icon\">\n\t\t\t\t<span  class=\"elementor-icon\">\n\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-microchip\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M416 48v416c0 26.51-21.49 48-48 48H144c-26.51 0-48-21.49-48-48V48c0-26.51 21.49-48 48-48h224c26.51 0 48 21.49 48 48zm96 58v12a6 6 0 0 1-6 6h-18v6a6 6 0 0 1-6 6h-42V88h42a6 6 0 0 1 6 6v6h18a6 6 0 0 1 6 6zm0 96v12a6 6 0 0 1-6 6h-18v6a6 6 0 0 1-6 6h-42v-48h42a6 6 0 0 1 6 6v6h18a6 6 0 0 1 6 6zm0 96v12a6 6 0 0 1-6 6h-18v6a6 6 0 0 1-6 6h-42v-48h42a6 6 0 0 1 6 6v6h18a6 6 0 0 1 6 6zm0 96v12a6 6 0 0 1-6 6h-18v6a6 6 0 0 1-6 6h-42v-48h42a6 6 0 0 1 6 6v6h18a6 6 0 0 1 6 6zM30 376h42v48H30a6 6 0 0 1-6-6v-6H6a6 6 0 0 1-6-6v-12a6 6 0 0 1 6-6h18v-6a6 6 0 0 1 6-6zm0-96h42v48H30a6 6 0 0 1-6-6v-6H6a6 6 0 0 1-6-6v-12a6 6 0 0 1 6-6h18v-6a6 6 0 0 1 6-6zm0-96h42v48H30a6 6 0 0 1-6-6v-6H6a6 6 0 0 1-6-6v-12a6 6 0 0 1 6-6h18v-6a6 6 0 0 1 6-6zm0-96h42v48H30a6 6 0 0 1-6-6v-6H6a6 6 0 0 1-6-6v-12a6 6 0 0 1 6-6h18v-6a6 6 0 0 1 6-6z\"><\/path><\/svg>\t\t\t\t<\/span>\n\t\t\t<\/div>\n\t\t\t\n\t\t\t\t\t\t<div class=\"elementor-icon-box-content\">\n\n\t\t\t\t\t\t\t\t\t<h3 class=\"elementor-icon-box-title\">\n\t\t\t\t\t\t<span  >\n\t\t\t\t\t\t\tBMS integration\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/h3>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t<p class=\"elementor-icon-box-description\">\n\t\t\t\t\t\tIntegration into existing building management systems via 0-10V, MODBUS, or BACnet for full transparency and control.\t\t\t\t\t<\/p>\n\t\t\t\t\n\t\t\t<\/div>\n\t\t\t\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-433455a e-con-full e-flex e-con e-child\" data-id=\"433455a\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-f86fcf2 elementor-view-default elementor-position-block-start elementor-mobile-position-block-start elementor-widget elementor-widget-icon-box\" data-id=\"f86fcf2\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"icon-box.default\">\n\t\t\t\t\t\t\t<div class=\"elementor-icon-box-wrapper\">\n\n\t\t\t\t\t\t<div class=\"elementor-icon-box-icon\">\n\t\t\t\t<span  class=\"elementor-icon\">\n\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-wave-square\" viewBox=\"0 0 640 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M476 480H324a36 36 0 0 1-36-36V96h-96v156a36 36 0 0 1-36 36H16a16 16 0 0 1-16-16v-32a16 16 0 0 1 16-16h112V68a36 36 0 0 1 36-36h152a36 36 0 0 1 36 36v348h96V260a36 36 0 0 1 36-36h140a16 16 0 0 1 16 16v32a16 16 0 0 1-16 16H512v156a36 36 0 0 1-36 36z\"><\/path><\/svg>\t\t\t\t<\/span>\n\t\t\t<\/div>\n\t\t\t\n\t\t\t\t\t\t<div class=\"elementor-icon-box-content\">\n\n\t\t\t\t\t\t\t\t\t<h3 class=\"elementor-icon-box-title\">\n\t\t\t\t\t\t<span  >\n\t\t\t\t\t\t\tDemand-based control\t\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/h3>\n\t\t\t\t\n\t\t\t\t\t\t\t\t\t<p class=\"elementor-icon-box-description\">\n\t\t\t\t\t\tOptimization through CO2 sensors or schedules. The system only runs at full capacity when truly necessary. \t\t\t\t\t<\/p>\n\t\t\t\t\n\t\t\t<\/div>\n\t\t\t\n\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-8f93a98 e-flex e-con-boxed e-con e-parent\" data-id=\"8f93a98\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t<div class=\"elementor-element elementor-element-1a6f523 e-con-full e-flex e-con e-child\" data-id=\"1a6f523\" data-element_type=\"container\" data-e-type=\"container\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t<div class=\"elementor-element elementor-element-5c980d7 e-con-full e-flex e-con e-child\" data-id=\"5c980d7\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-43feb3c elementor-widget elementor-widget-heading\" data-id=\"43feb3c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t\t<h2 class=\"elementor-heading-title elementor-size-default\">Ready for the Upgrade?<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6d8414c elementor-widget elementor-widget-text-editor\" data-id=\"6d8414c\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t\t\t\t\t\t<p class=\"text-xl text-blue-100 mb-12 max-w-2xl mx-auto\">Let&#8217;s jointly assess how much energy you can save. Start now with a non-binding initial assessment.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-8d1487a e-con-full e-flex e-con e-child\" data-id=\"8d1487a\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t<div class=\"elementor-element elementor-element-ff373c4 e-con-full e-flex e-con e-child\" data-id=\"ff373c4\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-50704c4 elementor-align-justify elementor-widget elementor-widget-button\" data-id=\"50704c4\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/breuell-hilgenfeldt.de\/kontakt\/\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-icon\">\n\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-paper-plane\" viewBox=\"0 0 512 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M476 3.2L12.5 270.6c-18.1 10.4-15.8 35.6 2.2 43.2L121 358.4l287.3-253.2c5.5-4.9 13.3 2.6 8.6 8.3L176 407v80.5c0 23.6 28.5 32.9 42.5 15.8L282 426l124.6 52.2c14.2 6 30.4-2.9 33-18.2l72-432C515 7.8 493.3-6.8 476 3.2z\"><\/path><\/svg>\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Contact Us<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"elementor-element elementor-element-5af06de e-con-full e-flex e-con e-child\" data-id=\"5af06de\" data-element_type=\"container\" data-e-type=\"container\">\n\t\t\t\t<div class=\"elementor-element elementor-element-0abde60 elementor-align-justify elementor-widget elementor-widget-button\" data-id=\"0abde60\" data-element_type=\"widget\" data-e-type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t\t\t\t\t\t\t<a class=\"elementor-button elementor-button-link elementor-size-sm\" href=\"https:\/\/breuell-hilgenfeldt.de\/ansprechpartner\/\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-icon\">\n\t\t\t\t<svg aria-hidden=\"true\" class=\"e-font-icon-svg e-fas-address-book\" viewBox=\"0 0 448 512\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\"><path d=\"M436 160c6.6 0 12-5.4 12-12v-40c0-6.6-5.4-12-12-12h-20V48c0-26.5-21.5-48-48-48H48C21.5 0 0 21.5 0 48v416c0 26.5 21.5 48 48 48h320c26.5 0 48-21.5 48-48v-48h20c6.6 0 12-5.4 12-12v-40c0-6.6-5.4-12-12-12h-20v-64h20c6.6 0 12-5.4 12-12v-40c0-6.6-5.4-12-12-12h-20v-64h20zm-228-32c35.3 0 64 28.7 64 64s-28.7 64-64 64-64-28.7-64-64 28.7-64 64-64zm112 236.8c0 10.6-10 19.2-22.4 19.2H118.4C106 384 96 375.4 96 364.8v-19.2c0-31.8 30.1-57.6 67.2-57.6h5c12.3 5.1 25.7 8 39.8 8s27.6-2.9 39.8-8h5c37.1 0 67.2 25.8 67.2 57.6v19.2z\"><\/path><\/svg>\t\t\t<\/span>\n\t\t\t\t\t\t\t\t\t<span class=\"elementor-button-text\">Find contact person<\/span>\n\t\t\t\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t","protected":false},"excerpt":{"rendered":"<p>Retrofit for Ventilation Systems\u2013 Modernize Efficiently From simple fan replacement to intelligent system control: We optimize your existing ventilation technology\u2014brand-independent and highly efficient. Have your retrofit checked now Why modernize ventilation systems? Many ventilation systems in industry and commerce are mechanically in good condition but operate with outdated, unregulated fans. A retrofit of your ventilation [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-334","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Retrofit for ventilation systems | Breuell + Hilgenfeldt Retrofit<\/title>\n<meta name=\"description\" content=\"Upgrade your ventilation system with an EC retrofit. Reduce energy consumption and costs by up to 50%\u2014without any downtime. 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