{"id":93364,"date":"2026-08-13T13:00:09","date_gmt":"2026-08-13T11:00:09","guid":{"rendered":"https:\/\/beteccontrols.nl\/hvac-componenten-vervangen\/"},"modified":"2026-08-13T13:00:09","modified_gmt":"2026-08-13T11:00:09","slug":"hvac-componenten-vervangen","status":"publish","type":"post","link":"https:\/\/beteccontrols.nl\/en\/hvac-componenten-vervangen\/","title":{"rendered":"Replacing HVAC components: what to consider during retrofit?"},"content":{"rendered":"<div class=\"product\"><div class=\"product\"><p class=\"p1\">Replacing an existing HVAC component with a new type requires more than just the brand and type number. The technical properties of the existing component determine which replacement is suitable. At Betec Controls, when replacing existing field equipment, we also refer to this as <span class=\"s1\"><b>retrofit<\/b><\/span> or <span class=\"s1\"><b>modernisation<\/b><\/span>. This involves replacing, for example, an actuator, Sensor, or combination of control valve and actuator within an existing climate installation.<\/p>\n<p class=\"p1\">To select a suitable replacement, it is important to collect the correct technical data in advance. The data required differs per application.<\/p>\n<h2><span class=\"s1\"><b><img decoding=\"async\" class=\"wp-image-91502 size-thumbnail alignnone\" src=\"https:\/\/beteccontrols.nl\/wp-content\/uploads\/2026\/08\/luchtklepmotor-retro-150x150.png\" alt=\"luchtklepmotor-retro\" width=\"150\" height=\"150\" srcset=\"https:\/\/beteccontrols.nl\/wp-content\/uploads\/2026\/08\/luchtklepmotor-retro-150x150.png 150w, https:\/\/beteccontrols.nl\/wp-content\/uploads\/2026\/08\/luchtklepmotor-retro-300x300.png 300w, https:\/\/beteccontrols.nl\/wp-content\/uploads\/2026\/08\/luchtklepmotor-retro-1024x1024.png 1024w, https:\/\/beteccontrols.nl\/wp-content\/uploads\/2026\/08\/luchtklepmotor-retro-768x768.png 768w, https:\/\/beteccontrols.nl\/wp-content\/uploads\/2026\/08\/luchtklepmotor-retro-600x600.png 600w, https:\/\/beteccontrols.nl\/wp-content\/uploads\/2026\/08\/luchtklepmotor-retro-100x100.png 100w, https:\/\/beteccontrols.nl\/wp-content\/uploads\/2026\/08\/luchtklepmotor-retro.png 1254w\" sizes=\"(max-width: 150px) 100vw, 150px\" \/> Replacing HVAC components in air-side control technology<\/b><\/span><\/h2>\n<p class=\"p1\">In an air-side application, this may involve, for example, an actuator on an air damper. Several properties of the current actuator are important when selecting a replacement type.<\/p>\n<p class=\"p3\">Therefore, note at least:<\/p>\n<ul>\n<li>the current brand, for example <a href=\"https:\/\/beteccontrols.nl\/en\/fabrikant\/belimo\/\" target=\"_blank\" rel=\"noopener\">Belimo<\/a>, Siemens, or any other brand;<\/li>\n<li>the current type number;<\/li>\n<li>the current voltage;<\/li>\n<li>the current torque;<\/li>\n<li>the current stroke length, if applicable;<\/li>\n<li>the presence of a Safety function or fail-safe function;<\/li>\n<li>the running time;<\/li>\n<li>the Management used.<\/li>\n<\/ul>\n<p class=\"p1\">The Management may, for example, be <span class=\"s1\"><b>open\/closed<\/b><\/span>, <span class=\"s1\"><b>0-10 V<\/b><\/span>, <span class=\"s1\"><b>2-10 V<\/b><\/span>, or communicative Management.<\/p>\n<p class=\"p1\">These data help make differences between the existing and potential new actuator clear. Therefore, do not only check the physical Connection or the available torque.<\/p>\n<h2><span class=\"s1\"><b><img decoding=\"async\" class=\"alignnone wp-image-91505 size-thumbnail\" src=\"https:\/\/beteccontrols.nl\/wp-content\/uploads\/2026\/08\/hvac_sensor-150x150.png\" alt=\"HVAC sensor vervangen \" width=\"150\" height=\"150\" srcset=\"https:\/\/beteccontrols.nl\/wp-content\/uploads\/2026\/08\/hvac_sensor-150x150.png 150w, https:\/\/beteccontrols.nl\/wp-content\/uploads\/2026\/08\/hvac_sensor-300x300.png 300w, https:\/\/beteccontrols.nl\/wp-content\/uploads\/2026\/08\/hvac_sensor-600x600.png 600w, https:\/\/beteccontrols.nl\/wp-content\/uploads\/2026\/08\/hvac_sensor-100x100.png 100w, https:\/\/beteccontrols.nl\/wp-content\/uploads\/2026\/08\/hvac_sensor.png 609w\" sizes=\"(max-width: 150px) 100vw, 150px\" \/> Replacing an HVAC Sensor<\/b><\/span><\/h2>\n<p class=\"p1\">When replacing a Sensor as well, the existing type number is an important starting point. In addition, the Execution and technical properties of the Sensor play a role.<\/p>\n<p class=\"p3\">Check, among other things:<\/p>\n<ul>\n<li>the current brand, for example <a href=\"https:\/\/beteccontrols.nl\/en\/fabrikant\/produal\/\" target=\"_blank\" rel=\"noopener\">HK Instruments<\/a>, Honeywell, <a href=\"https:\/\/beteccontrols.nl\/en\/fabrikant\/produal\/\" target=\"_blank\" rel=\"noopener\">Produal<\/a>, <a href=\"https:\/\/beteccontrols.nl\/en\/fabrikant\/thermokon-sensor-technology\/\" target=\"_blank\" rel=\"noopener\">Thermokon<\/a> ,<a href=\"https:\/\/beteccontrols.nl\/en\/fabrikant\/belimo\/\" target=\"_blank\" rel=\"noopener\">Belimo<\/a>, etc.;<\/li>\n<li>the current type number;<\/li>\n<li>the presence of a display;<\/li>\n<li>the length of the probe;<\/li>\n<li>the DN size, when relevant;<\/li>\n<li>additional properties.<\/li>\n<\/ul>\n<p class=\"p1\">Additional properties may include, for example, an <span class=\"s1\"><b>autozero function<\/b><\/span> or automatic zeroing.<\/p>\n<p class=\"p1\">By recording these data in advance, the search for a replacement Sensor can be more targeted. This is especially important when the existing Execution is part of an HVAC or building management system.<\/p>\n<h2><span class=\"s1\"><b><img decoding=\"async\" class=\"alignnone wp-image-91503 size-thumbnail\" src=\"https:\/\/beteccontrols.nl\/wp-content\/uploads\/2026\/08\/waterzijdige_aandrijving-150x150.png\" alt=\"Een waterzijdige aandrijving vervangen\" width=\"150\" height=\"150\" srcset=\"https:\/\/beteccontrols.nl\/wp-content\/uploads\/2026\/08\/waterzijdige_aandrijving-150x150.png 150w, https:\/\/beteccontrols.nl\/wp-content\/uploads\/2026\/08\/waterzijdige_aandrijving-300x300.png 300w, https:\/\/beteccontrols.nl\/wp-content\/uploads\/2026\/08\/waterzijdige_aandrijving-600x600.png 600w, https:\/\/beteccontrols.nl\/wp-content\/uploads\/2026\/08\/waterzijdige_aandrijving-100x100.png 100w, https:\/\/beteccontrols.nl\/wp-content\/uploads\/2026\/08\/waterzijdige_aandrijving.png 609w\" sizes=\"(max-width: 150px) 100vw, 150px\" \/> Replacing actuators for water-side applications<\/b><\/span><\/h2>\n<p class=\"p1\">Within water-side control technology, partly different selection criteria play a role. A replacement actuator must match both the application and the existing control technology.<\/p>\n<p class=\"p3\">Therefore, collect the following data:<\/p>\n<ul>\n<li>current brand;<\/li>\n<li>current type;<\/li>\n<li>current voltage;<\/li>\n<li>current torque;<\/li>\n<li>current actuating force;<\/li>\n<li>current stroke length;<\/li>\n<li>Safety function or fail-safe function;<\/li>\n<li>running time;<\/li>\n<li>Management used.<\/li>\n<\/ul>\n<p class=\"p1\">The Management may, for example, be open\/closed, 0-10 V, 2-10 V, or communicative.<\/p>\n<p class=\"p1\">Depending on the actuator, not all properties apply. That is precisely why it is important to record as much information as possible about the existing component.<\/p>\n<h2><span class=\"s1\"><b>Replacing Control valve and actuator together<\/b><\/span><\/h2>\n<p class=\"p1\">Sometimes replacing only the actuator is not sufficient. In a retrofit, it may be necessary to replace both the <span class=\"s1\"><b>control valve and the actuator<\/b><\/span>.<\/p>\n<p class=\"p1\">In that case, additional data are required.<\/p>\n<h3><span class=\"s1\"><b>Data of the existing valve and actuator<\/b><\/span><\/h3>\n<p class=\"p3\">Check:<\/p>\n<ul>\n<li>the current brand, for example Danfoss, ESBE, Honeywell, <a href=\"https:\/\/beteccontrols.nl\/en\/fabrikant\/belimo\/\" target=\"_blank\" rel=\"noopener\">Belimo<\/a>, or any other brand;<\/li>\n<li>the current valve type;<\/li>\n<li>the current torque;<\/li>\n<li>the Kvs value;<\/li>\n<li>the DN size;<\/li>\n<li>the shaft size;<\/li>\n<li>the ISO top flange.<\/li>\n<\/ul>\n<p class=\"p4\">The type may be, for example, a <span class=\"s1\"><b>butterfly valve<\/b><\/span><span class=\"s2\">, <\/span><span class=\"s1\"><b>control valve<\/b><\/span><span class=\"s2\">, <\/span><span class=\"s1\"><b>2-way valve<\/b><\/span><span class=\"s2\">, or <\/span><span class=\"s1\"><b>3-way valve<\/b><\/span><span class=\"s2\">.<\/span><\/p>\n<p class=\"p1\">For the shaft size, it is important to check which mechanical Connection is present. Think of square, double-D, or keyway.<\/p>\n<p class=\"p1\">Also check the ISO top flange. Examples from existing installations are F03, F04, F05, F07, and F10.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone wp-image-91500 size-large\" src=\"https:\/\/beteccontrols.nl\/wp-content\/uploads\/2026\/08\/Scherm\u00adafbeelding-2026-08-11-om-11.44.54-1024x207.png\" alt=\"Asmaat vlinderklep\" width=\"800\" height=\"162\" srcset=\"https:\/\/beteccontrols.nl\/wp-content\/uploads\/2026\/08\/Scherm\u00adafbeelding-2026-08-11-om-11.44.54-1024x207.png 1024w, https:\/\/beteccontrols.nl\/wp-content\/uploads\/2026\/08\/Scherm\u00adafbeelding-2026-08-11-om-11.44.54-300x61.png 300w, https:\/\/beteccontrols.nl\/wp-content\/uploads\/2026\/08\/Scherm\u00adafbeelding-2026-08-11-om-11.44.54-768x156.png 768w, https:\/\/beteccontrols.nl\/wp-content\/uploads\/2026\/08\/Scherm\u00adafbeelding-2026-08-11-om-11.44.54-600x122.png 600w, https:\/\/beteccontrols.nl\/wp-content\/uploads\/2026\/08\/Scherm\u00adafbeelding-2026-08-11-om-11.44.54.png 1432w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/p>\n<h2><span class=\"s1\"><b>Why the existing data are important for retrofit<\/b><\/span><\/h2>\n<p class=\"p1\">In HVAC retrofit, the existing situation is the starting point. After all, a new component must match the application, mechanical Execution, and control technology properties of the installation.<\/p>\n<p class=\"p1\">A type number alone therefore does not always provide sufficient information. Where possible, also note data from the nameplate and the existing application.<\/p>\n<p class=\"p1\">If necessary, take clear photos of the component, the Connection, and the nameplate. This makes it easier to assess the available technical data.<\/p>\n<p class=\"p1\">For selecting a suitable replacement, you can also contact us for technical advice. For <a href=\"https:\/\/beteccontrols.nl\/en\/contact\/\" target=\"_blank\" rel=\"noopener\">contact click here<\/a> or use the chat function!<\/p>\n<h2><span class=\"s1\"><b>Need help replacing an existing HVAC component?<\/b><\/span><\/h2>\n<p class=\"p1\">Do you want to replace an existing actuator, Sensor, control valve, or combination? Then collect as much of the above data as possible. Betec Controls can use this information as a starting point when searching for a suitable solution for retrofit or modernisation. This allows a targeted assessment of the technical properties that are relevant to the existing HVAC installation.<\/p>\n<p>Do you have any questions? Please <a href=\"https:\/\/beteccontrols.nl\/en\/contact\/\" target=\"_blank\" rel=\"noopener\">contact<\/a> us or, also nice, use the chat function! We are happy to help.<\/p>\n<h2><span class=\"s1\"><b>FAQ<\/b><\/span><\/h2>\n<h3><span class=\"s1\"><b>What does retrofit mean in an HVAC installation?<\/b><\/span><\/h3>\n<p class=\"p1\">With retrofit, you replace existing components within an installation with new components. In this context, this may involve, for example, actuators, sensors, or control valves.<\/p>\n<h3><span class=\"s1\"><b>What data do I need to replace an actuator?<\/b><\/span><\/h3>\n<p class=\"p1\">Note, among other things, brand, type, voltage, torque, stroke length, running time, Safety function, and Management. For water-side applications, the actuating force may also be relevant.<\/p>\n<h3><span class=\"s1\"><b>Can I replace an old HVAC actuator based only on the type number?<\/b><\/span><\/h3>\n<p class=\"p1\">The type number is an important starting point, but the source text also mentions several technical properties. Think of voltage, torque, running time, and Management.<\/p>\n<h3><span class=\"s1\"><b>What should I pay attention to when replacing a control valve and actuator?<\/b><\/span><\/h3>\n<p class=\"p1\">Check, among other things, the valve type, torque, Kvs value, DN size, shaft size, and the ISO top flange. These data help when assessing a possible replacement.<\/p>\n<h3><span class=\"s1\"><b>What data are important when replacing an HVAC Sensor?<\/b><\/span><\/h3>\n<p class=\"p5\">Check brand, type, display, probe length, and any DN size. Also note additional properties, such as autozero or automatic zeroing.<\/p>\n<\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>Replacing an existing HVAC component with a new type requires more than just the brand and type number. The technical properties of the existing component determine which replacement is suitable. At Betec Controls, when replacing existing field equipment, we also refer to this as retrofit or modernisation. This involves replacing, for example, an actuator, Sensor, [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":93365,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4949,4948,4947],"tags":[26544,26543,26546,26545,26548,26547],"class_list":["post-93364","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-general","category-news","category-technology","tag-hvac-modernization","tag-hvac-retrofit","tag-replacing-a-control-valve","tag-replacing-an-actuator","tag-replacing-an-air-damper-actuator","tag-replacing-an-hvac-sensor"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.6 (Yoast SEO v28.6) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Replacing HVAC components: what to consider during retrofit?<\/title>\n<meta name=\"description\" content=\"Replacing HVAC components? 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