{"id":5353,"date":"2026-02-25T14:11:48","date_gmt":"2026-02-25T13:11:48","guid":{"rendered":"https:\/\/www.hrinstallatietechniek.com\/?post_type=nieuws&#038;p=5353"},"modified":"2026-02-25T14:23:50","modified_gmt":"2026-02-25T13:23:50","slug":"how-can-i-bleed-my-heating-system-myself","status":"publish","type":"nieuws","link":"https:\/\/www.hrinstallatietechniek.com\/en\/news\/how-can-i-bleed-my-heating-system-myself\/","title":{"rendered":"How can I bleed my heating system myself?"},"content":{"rendered":"\n<p>Do you hear a bubbling sound in the radiator? Is one side of the heater not getting warm? Or does it take a long time for your home to reach the desired temperature? If so, there is a high probability that there is air in your heating system and it is time to bleed the heating.   <br\/><br\/>Air in the pipes prevents hot water from circulating properly. As a result, the central heating system loses efficiency, energy consumption rises, and comfort in the home decreases. Fortunately, bleeding radiators is a simple task that you can perform yourself with a clear step-by-step plan. But where exactly do you start when bleeding your radiators? And when is it better to call in a specialist like HR Installatietechniek? In this blog, we explain it step by step.     <br\/><br\/><\/p>\n\t\t\t\t<div class=\"wp-block-uagb-table-of-contents uagb-toc__align-left uagb-toc__columns-1 uagb-toc__collapse uagb-block-df62d8f7      \"\n\t\t\t\t\tdata-scroll= \"1\"\n\t\t\t\t\tdata-offset= \"30\"\n\t\t\t\t\tstyle=\"\"\n\t\t\t\t>\n\t\t\t\t<div class=\"uagb-toc__wrap\">\n\t\t\t\t\t\t<div class=\"uagb-toc__title\">\n\t\t\t\t\t\t\tTable Of Contents\t\t\t\t\t\t\t\t\t\t\t\t\t<svg xmlns=\"https:\/\/www.w3.org\/2000\/svg\" viewBox= \"0 0 384 512\"><path d=\"M192 384c-8.188 0-16.38-3.125-22.62-9.375l-160-160c-12.5-12.5-12.5-32.75 0-45.25s32.75-12.5 45.25 0L192 306.8l137.4-137.4c12.5-12.5 32.75-12.5 45.25 0s12.5 32.75 0 45.25l-160 160C208.4 380.9 200.2 384 192 384z\"><\/path><\/svg>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"uagb-toc__list-wrap \">\n\t\t\t\t\t\t<ol class=\"uagb-toc__list\"><li class=\"uagb-toc__list\"><a href=\"#requirements-for-bleeding\" class=\"uagb-toc-link__trigger\">Requirements for bleeding<\/a><li class=\"uagb-toc__list\"><a href=\"#step-by-step-plan-for-bleeding-the-heating\" class=\"uagb-toc-link__trigger\">Step-by-step plan for bleeding the heating<\/a><ul class=\"uagb-toc__list\"><li class=\"uagb-toc__list\"><a href=\"#tips-from-the-technician\" class=\"uagb-toc-link__trigger\">Tips from the technician<\/a><\/li><\/ul><\/li><li class=\"uagb-toc__list\"><a href=\"#frequently-asked-questions\" class=\"uagb-toc-link__trigger\">Frequently Asked Questions<\/a><li class=\"uagb-toc__list\"><a href=\"#conclusion\" class=\"uagb-toc-link__trigger\">Conclusion<\/a><\/ul><\/ol>\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\n<h2 class=\"wp-block-heading\"><br\/>Requirements for bleeding<\/h2>\n\n<p>Before you start bleeding your heating, it is important to have the right tools at hand. This ensures you work safely and prevents unnecessary mess or pressure loss. <br\/><br\/>What you need:<\/p>\n\n<ul class=\"wp-block-list\">\n<li>A radiator bleed key (also called a central heating bleed key)<\/li>\n\n\n\n<li>A cloth or towel<\/li>\n\n\n\n<li>A bowl or cup to catch water<\/li>\n\n\n\n<li>Optional: gloves<\/li>\n<\/ul>\n\n<p>A bleed key is specifically designed for the small valve located at the top of the side of the radiator. Don&#8217;t have a key? In some cases, you can use a flat-head screwdriver to bleed a radiator without a key, but this depends on the type of radiator.  <br\/><br\/>Keep in mind that some water will be released during the bleeding process. This is normal. Therefore, always make sure to hold a cloth under the valve. Additionally, check the water pressure of your boiler beforehand. It should usually be between 1.5 and 2 bar (consult your boiler\u2019s manual). After bleeding, it may be necessary to top up the water.     <\/p>\n\n<h2 class=\"wp-block-heading\"><br\/>Step-by-step plan for bleeding the heating<\/h2>\n\n<p><strong>1. Preparation of the central heating system<br\/><\/strong>First, turn the thermostat down and switch off the boiler. Then wait at least 10 to 15 minutes to allow the system to cool down. Bleeding a hot installation can be dangerous due to hot water and steam. Furthermore, bleeding while the pump is running is ineffective, as the pump moves the air bubbles through the pipes. Only when the system is stationary does the air rise to the top, allowing you to let it escape.     <\/p>\n\n<p><strong>2. Determine the correct order of the radiators<br\/><\/strong>A common question is: where should you start bleeding the central heating? Start with the radiators on the ground floor and work your way up step by step. The starting point is not a random choice; the correct order ensures optimal results.   <\/p>\n\n<p><strong>3. Let the air escape from the radiator<br\/><\/strong>Insert the bleed key into the valve at the top of the radiator and slowly turn it a quarter turn open. You will likely hear a hissing sound; that is the air escaping. Hold a cloth or bowl under the valve to catch any water. As soon as a steady stream of water comes out without air, close the valve again. Do not overtighten; finger-tight is sufficient.    <\/p>\n\n<p><strong>4. Check if the radiator warms up properly<br\/><\/strong>After bleeding, turn the thermostat back up and switch on the boiler. Check if the radiator now heats up evenly. If the top remains cold, there may still be air present.  <\/p>\n\n<p>5. Repeat for the remaining radiators <br\/>Follow the same steps for all radiators in the house in the correct order, from bottom to top.<\/p>\n\n<p><strong>6. Check and restore water pressure<br\/><\/strong>After bleeding, the water pressure in the boiler may have dropped. Check the pressure gauge and, if necessary, top up the water to the correct level (usually between 1.5 and 2 bar). Don\u2019t know how this works? Read our guide on <a href=\"https:\/\/www.hrinstallatietechniek.com\/en\/news\/how-to-refill-your-central-heating-boiler-in-a-few-steps\/\" data-type=\"nieuws\" data-id=\"4932\">how to refill your central heating boiler in a few steps<\/a>.   <\/p>\n\n<p><strong>7. Completion and final check<br\/><\/strong>Finally, check all radiators one last time. Listen for any remaining bubbling sounds and verify that all rooms are heating up evenly again. <\/p>\n\n<h3 class=\"wp-block-heading\"><br\/>Tips from the technician<\/h3>\n\n<p>In practice, as installers, we see a number of recurring problems when bleeding heating systems. A common complaint is: &#8220;My radiator is bubbling again after a few days.&#8221; Or: &#8220;The heating bubbles repeatedly.&#8221; This could indicate:  <br\/><\/p>\n\n<ul class=\"wp-block-list\">\n<li>Low water pressure<\/li>\n\n\n\n<li>A small leak in the system<\/li>\n\n\n\n<li>Problems with the expansion vessel<\/li>\n\n\n\n<li>Air being drawn in through automatic air vents<\/li>\n<\/ul>\n\n<p>Pay extra attention to the water pressure in the days following the bleeding. Does it drop quickly? Then there may be more going on than just air in the pipes.   If the problem persists, it is wise to call in a specialist. HR Installatietechniek can check the entire installation and address the cause directly. <\/p>\n\n<h2 class=\"wp-block-heading\"><br\/>Frequently Asked Questions<\/h2>\n<div class=\"wp-block-uagb-faq uagb-faq__outer-wrap uagb-block-db83b29f uagb-faq-icon-row uagb-faq-layout-accordion uagb-faq-expand-first-true uagb-faq-inactive-other-true uagb-faq__wrap uagb-buttons-layout-wrap uagb-faq-equal-height     \" data-faqtoggle=\"true\" role=\"tablist\"><div class=\"wp-block-uagb-faq-child uagb-faq-child__outer-wrap uagb-faq-item uagb-block-7f2a9055 \" role=\"tab\" tabindex=\"0\"><div class=\"uagb-faq-questions-button uagb-faq-questions\">\t\t\t<span class=\"uagb-icon uagb-faq-icon-wrap\">\n\t\t\t\t\t\t\t\t<svg xmlns=\"https:\/\/www.w3.org\/2000\/svg\" viewBox= \"0 0 448 512\"><path d=\"M432 256c0 17.69-14.33 32.01-32 32.01H256v144c0 17.69-14.33 31.99-32 31.99s-32-14.3-32-31.99v-144H48c-17.67 0-32-14.32-32-32.01s14.33-31.99 32-31.99H192v-144c0-17.69 14.33-32.01 32-32.01s32 14.32 32 32.01v144h144C417.7 224 432 238.3 432 256z\"><\/path><\/svg>\n\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t<span class=\"uagb-icon-active uagb-faq-icon-wrap\">\n\t\t\t\t\t\t\t\t<svg xmlns=\"https:\/\/www.w3.org\/2000\/svg\" viewBox= \"0 0 448 512\"><path d=\"M400 288h-352c-17.69 0-32-14.32-32-32.01s14.31-31.99 32-31.99h352c17.69 0 32 14.3 32 31.99S417.7 288 400 288z\"><\/path><\/svg>\n\t\t\t\t\t\t\t<\/span>\n\t\t\t<span class=\"uagb-question\"><strong>Should the heating be on or off during bleeding?<\/strong><\/span><\/div><div class=\"uagb-faq-content\"><p>The heating must always be off during bleeding. Let the installation cool down first to prevent burns. <\/p><\/div><\/div><div class=\"wp-block-uagb-faq-child uagb-faq-child__outer-wrap uagb-faq-item uagb-block-d8b8d0cd \" role=\"tab\" tabindex=\"0\"><div class=\"uagb-faq-questions-button uagb-faq-questions\">\t\t\t<span class=\"uagb-icon uagb-faq-icon-wrap\">\n\t\t\t\t\t\t\t\t<svg xmlns=\"https:\/\/www.w3.org\/2000\/svg\" viewBox= \"0 0 448 512\"><path d=\"M432 256c0 17.69-14.33 32.01-32 32.01H256v144c0 17.69-14.33 31.99-32 31.99s-32-14.3-32-31.99v-144H48c-17.67 0-32-14.32-32-32.01s14.33-31.99 32-31.99H192v-144c0-17.69 14.33-32.01 32-32.01s32 14.32 32 32.01v144h144C417.7 224 432 238.3 432 256z\"><\/path><\/svg>\n\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t<span class=\"uagb-icon-active uagb-faq-icon-wrap\">\n\t\t\t\t\t\t\t\t<svg xmlns=\"https:\/\/www.w3.org\/2000\/svg\" viewBox= \"0 0 448 512\"><path d=\"M400 288h-352c-17.69 0-32-14.32-32-32.01s14.31-31.99 32-31.99h352c17.69 0 32 14.3 32 31.99S417.7 288 400 288z\"><\/path><\/svg>\n\t\t\t\t\t\t\t<\/span>\n\t\t\t<span class=\"uagb-question\"><strong>What is the correct order for bleeding radiators?<\/strong><\/span><\/div><div class=\"uagb-faq-content\"><p>Start on the ground floor and work your way up step by step. This order is essential for optimal results when bleeding radiators. <\/p><\/div><\/div><div class=\"wp-block-uagb-faq-child uagb-faq-child__outer-wrap uagb-faq-item uagb-block-247a4504 \" role=\"tab\" tabindex=\"0\"><div class=\"uagb-faq-questions-button uagb-faq-questions\">\t\t\t<span class=\"uagb-icon uagb-faq-icon-wrap\">\n\t\t\t\t\t\t\t\t<svg xmlns=\"https:\/\/www.w3.org\/2000\/svg\" viewBox= \"0 0 448 512\"><path d=\"M432 256c0 17.69-14.33 32.01-32 32.01H256v144c0 17.69-14.33 31.99-32 31.99s-32-14.3-32-31.99v-144H48c-17.67 0-32-14.32-32-32.01s14.33-31.99 32-31.99H192v-144c0-17.69 14.33-32.01 32-32.01s32 14.32 32 32.01v144h144C417.7 224 432 238.3 432 256z\"><\/path><\/svg>\n\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t<span class=\"uagb-icon-active uagb-faq-icon-wrap\">\n\t\t\t\t\t\t\t\t<svg xmlns=\"https:\/\/www.w3.org\/2000\/svg\" viewBox= \"0 0 448 512\"><path d=\"M400 288h-352c-17.69 0-32-14.32-32-32.01s14.31-31.99 32-31.99h352c17.69 0 32 14.3 32 31.99S417.7 288 400 288z\"><\/path><\/svg>\n\t\t\t\t\t\t\t<\/span>\n\t\t\t<span class=\"uagb-question\"><strong>How often should I bleed my heating?<\/strong><\/span><\/div><div class=\"uagb-faq-content\"><p>In most homes, once a year is sufficient, for example, at the start of the heating season. If you hear noises or notice reduced heat output sooner, you can bleed the heating in the meantime.  <\/p><\/div><\/div><div class=\"wp-block-uagb-faq-child uagb-faq-child__outer-wrap uagb-faq-item uagb-block-9c4b863e \" role=\"tab\" tabindex=\"0\"><div class=\"uagb-faq-questions-button uagb-faq-questions\">\t\t\t<span class=\"uagb-icon uagb-faq-icon-wrap\">\n\t\t\t\t\t\t\t\t<svg xmlns=\"https:\/\/www.w3.org\/2000\/svg\" viewBox= \"0 0 448 512\"><path d=\"M432 256c0 17.69-14.33 32.01-32 32.01H256v144c0 17.69-14.33 31.99-32 31.99s-32-14.3-32-31.99v-144H48c-17.67 0-32-14.32-32-32.01s14.33-31.99 32-31.99H192v-144c0-17.69 14.33-32.01 32-32.01s32 14.32 32 32.01v144h144C417.7 224 432 238.3 432 256z\"><\/path><\/svg>\n\t\t\t\t\t\t\t<\/span>\n\t\t\t\t\t\t<span class=\"uagb-icon-active uagb-faq-icon-wrap\">\n\t\t\t\t\t\t\t\t<svg xmlns=\"https:\/\/www.w3.org\/2000\/svg\" viewBox= \"0 0 448 512\"><path d=\"M400 288h-352c-17.69 0-32-14.32-32-32.01s14.31-31.99 32-31.99h352c17.69 0 32 14.3 32 31.99S417.7 288 400 288z\"><\/path><\/svg>\n\t\t\t\t\t\t\t<\/span>\n\t\t\t<span class=\"uagb-question\"><strong>When is bleeding not enough?<\/strong><\/span><\/div><div class=\"uagb-faq-content\"><p>If radiators remain cold, you hear continuous flow noises, or you have to top up the water frequently, bleeding alone is not the solution. There may be a defective expansion vessel, contamination in the system, or a fault in the boiler.  <\/p><\/div><\/div><\/div>\n<h2 class=\"wp-block-heading\"><br\/>Conclusion<\/h2>\n\n<p>Bleeding your heating is a simple but effective way to improve the efficiency of your installation. You prevent bubbling noises, cold spots in radiators, and unnecessary energy loss. <\/p>\n\n<p>By regularly bleeding your heating, you ensure even heat distribution and more comfort in your home. However, if problems persist or you have doubts about the state of your installation, a professional check-up is advisable.   HR Installatietechniek is happy to help you with <a href=\"https:\/\/www.hrinstallatietechniek.com\/en\/services\/boiler-maintenance\/\" data-type=\"page\" data-id=\"2282\">boiler maintenance<\/a>, inspections, and the optimal adjustment of your central heating system. This way, you are assured of a warm and worry-free home. <\/p>\n","protected":false},"author":11,"featured_media":5352,"parent":0,"template":"","categorie":[31],"class_list":["post-5353","nieuws","type-nieuws","status-publish","has-post-thumbnail","hentry","categorie-boiler"],"uagb_featured_image_src":{"full":["https:\/\/www.hrinstallatietechniek.com\/wp-content\/uploads\/2026\/02\/HR-Installatietechniek-Blog_Verwarming-ontluchten-01.jpg",1280,850,false],"thumbnail":["https:\/\/www.hrinstallatietechniek.com\/wp-content\/uploads\/2026\/02\/HR-Installatietechniek-Blog_Verwarming-ontluchten-01-150x150.jpg",150,150,true],"medium":["https:\/\/www.hrinstallatietechniek.com\/wp-content\/uploads\/2026\/02\/HR-Installatietechniek-Blog_Verwarming-ontluchten-01-300x199.jpg",300,199,true],"medium_large":["https:\/\/www.hrinstallatietechniek.com\/wp-content\/uploads\/2026\/02\/HR-Installatietechniek-Blog_Verwarming-ontluchten-01-768x510.jpg",768,510,true],"large":["https:\/\/www.hrinstallatietechniek.com\/wp-content\/uploads\/2026\/02\/HR-Installatietechniek-Blog_Verwarming-ontluchten-01-1024x680.jpg",800,531,true],"1536x1536":["https:\/\/www.hrinstallatietechniek.com\/wp-content\/uploads\/2026\/02\/HR-Installatietechniek-Blog_Verwarming-ontluchten-01.jpg",1280,850,false],"2048x2048":["https:\/\/www.hrinstallatietechniek.com\/wp-content\/uploads\/2026\/02\/HR-Installatietechniek-Blog_Verwarming-ontluchten-01.jpg",1280,850,false]},"uagb_author_info":{"display_name":"Maaike","author_link":"#"},"uagb_comment_info":0,"uagb_excerpt":"Do you hear a bubbling sound in the radiator? Is one side of the heater not getting warm? Or does it take a long time for your home to reach the desired temperature? If so, there is a high probability that there is air in your heating system and it is time to bleed the&hellip;","_links":{"self":[{"href":"https:\/\/www.hrinstallatietechniek.com\/en\/wp-json\/wp\/v2\/nieuws\/5353","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.hrinstallatietechniek.com\/en\/wp-json\/wp\/v2\/nieuws"}],"about":[{"href":"https:\/\/www.hrinstallatietechniek.com\/en\/wp-json\/wp\/v2\/types\/nieuws"}],"author":[{"embeddable":true,"href":"https:\/\/www.hrinstallatietechniek.com\/en\/wp-json\/wp\/v2\/users\/11"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.hrinstallatietechniek.com\/en\/wp-json\/wp\/v2\/media\/5352"}],"wp:attachment":[{"href":"https:\/\/www.hrinstallatietechniek.com\/en\/wp-json\/wp\/v2\/media?parent=5353"}],"wp:term":[{"taxonomy":"categorie","embeddable":true,"href":"https:\/\/www.hrinstallatietechniek.com\/en\/wp-json\/wp\/v2\/categorie?post=5353"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}