{"id":18057,"date":"2025-09-24T01:13:36","date_gmt":"2025-09-24T06:13:36","guid":{"rendered":"https:\/\/www.galmicheandsons.com\/hvac-blog\/?p=18057"},"modified":"2025-10-08T03:48:07","modified_gmt":"2025-10-08T08:48:07","slug":"how-to-change-your-air-conditioner-filter","status":"publish","type":"post","link":"https:\/\/www.galmicheandsons.com\/hvac-blog\/how-to-change-your-air-conditioner-filter\/","title":{"rendered":"How to Change Your Air Conditioner Filter Like a Pro"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title ez-toc-toggle\" style=\"cursor:pointer\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 eztoc-toggle-hide-by-default' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/how-to-change-your-air-conditioner-filter\/#Why_Changing_Your_Air_Conditioner_Filter_Matters\" >Why Changing Your Air Conditioner Filter Matters<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/how-to-change-your-air-conditioner-filter\/#How_Often_Should_You_Change_Your_Air_Conditioner_Filter\" >How Often Should You Change Your Air Conditioner Filter?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/how-to-change-your-air-conditioner-filter\/#Step-by-Step_Guide_How_to_Change_Your_Air_Conditioner_Filter\" >Step-by-Step Guide: How to Change Your Air Conditioner Filter<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/how-to-change-your-air-conditioner-filter\/#Step_1_Turn_Off_Your_HVAC_System\" >Step 1: Turn Off Your HVAC System<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/how-to-change-your-air-conditioner-filter\/#Step_2_Locate_the_Air_Filter\" >Step 2: Locate the Air Filter<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/how-to-change-your-air-conditioner-filter\/#Step_3_Check_the_Filter_Size\" >Step 3: Check the Filter Size<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/how-to-change-your-air-conditioner-filter\/#Step_4_Remove_the_Old_Filter\" >Step 4: Remove the Old Filter<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/how-to-change-your-air-conditioner-filter\/#Step_5_Insert_the_New_Filter\" >Step 5: Insert the New Filter<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/how-to-change-your-air-conditioner-filter\/#Step_6_Turn_the_System_Back_On\" >Step 6: Turn the System Back On<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/how-to-change-your-air-conditioner-filter\/#Common_Mistakes_to_Avoid\" >Common Mistakes to Avoid<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/how-to-change-your-air-conditioner-filter\/#FAQs_About_Changing_Your_AC_Filter\" >FAQs About Changing Your AC Filter<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/how-to-change-your-air-conditioner-filter\/#Schedule_Professional_AC_Maintenance_in_St_Louis\" >Schedule Professional AC Maintenance in St. Louis<\/a><\/li><\/ul><\/nav><\/div>\n<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-content\/uploads\/2025\/09\/how-to-change-your-air-conditioner-filter-1-300x200.jpg\" alt=\"How to Change Your Air Conditioner Filter Like a Pro\" width=\"300\" height=\"200\" class=\"alignright size-medium wp-image-18158\" srcset=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-content\/uploads\/2025\/09\/how-to-change-your-air-conditioner-filter-1-300x200.jpg 300w, https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-content\/uploads\/2025\/09\/how-to-change-your-air-conditioner-filter-1.jpg 600w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><p>Keeping your air conditioner running at peak performance is essential, especially during the hot and humid St. Louis summers. One of the simplest yet most important maintenance tasks you can perform is to change your air conditioner filter regularly. A clean filter not only improves your home&#8217;s indoor air quality but also helps your system run more efficiently, saving you money on energy bills and extending the life of your unit.<\/p>\r\n<p>At Galmiche &#038; Sons, we have been helping St. Louis homeowners with their heating and cooling needs for decades, and we know that filter replacement is one area where many people either forget or make common mistakes. This guide will walk you through the process so you can change your air conditioner filter like a pro.<\/p>\r\n<p>To learn more or schedule professional <a href=\"https:\/\/www.galmicheandsons.com\/air-conditioner-servicing.html\">air conditioner servicing<\/a> in St. Louis, contact our team today.<\/p>\r\n<h2><span class=\"ez-toc-section\" id=\"Why_Changing_Your_Air_Conditioner_Filter_Matters\"><\/span>Why Changing Your Air Conditioner Filter Matters<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n<p>Over time, your AC filter traps dust, dirt, pollen, pet dander, and other airborne particles. When the filter becomes clogged, your system must work harder to push air through, leading to higher energy usage and potential breakdowns. Additionally, dirty filters can circulate contaminants throughout your home, worsening allergies or respiratory problems. Changing your air conditioner filter is a key part of <a href=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/air-conditioner-maintenance-for-old-units\/\">air conditioner maintenance for old units<\/a> and new systems alike.<\/p>\r\n<p>By replacing your filter regularly, you will:<\/p>\r\n<ul>\r\n<li>Maintain efficient airflow<\/li>\r\n<li>Reduce strain on your AC system<\/li>\r\n<li>Improve indoor air quality<\/li>\r\n<li>Lower monthly utility bills<\/li>\r\n<li>Prevent costly repairs<\/li>\r\n<\/ul>\r\n<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-content\/uploads\/2025\/09\/how-to-change-your-air-conditioner-filter-2-300x153.jpg\" alt=\"How Often Should You Change Your Air Conditioner Filter?\" width=\"300\" height=\"153\" class=\"alignright size-medium wp-image-18159\" srcset=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-content\/uploads\/2025\/09\/how-to-change-your-air-conditioner-filter-2-300x153.jpg 300w, https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-content\/uploads\/2025\/09\/how-to-change-your-air-conditioner-filter-2.jpg 600w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><h2><span class=\"ez-toc-section\" id=\"How_Often_Should_You_Change_Your_Air_Conditioner_Filter\"><\/span>How Often Should You Change Your Air Conditioner Filter?<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n<p>While the frequency depends on factors like filter type, household size, pets, and indoor air quality, most experts recommend replacing filters every 1 to 3 months. Changing your air filter is a key part of <a href=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/seasonal-ac-maintenance-guide\/\">seasonal air conditioner maintenance<\/a>. In St. Louis, where seasonal changes can be extreme, you may need to change them more frequently during heavy use periods.<\/p>\r\n<h2><span class=\"ez-toc-section\" id=\"Step-by-Step_Guide_How_to_Change_Your_Air_Conditioner_Filter\"><\/span>Step-by-Step Guide: How to Change Your Air Conditioner Filter<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n<h3><span class=\"ez-toc-section\" id=\"Step_1_Turn_Off_Your_HVAC_System\"><\/span>Step 1: Turn Off Your HVAC System<span class=\"ez-toc-section-end\"><\/span><\/h3>\r\n<p>Before you begin, always turn off your air conditioner at the thermostat or circuit breaker to ensure safety.<\/p>\r\n<h3><span class=\"ez-toc-section\" id=\"Step_2_Locate_the_Air_Filter\"><\/span>Step 2: Locate the Air Filter<span class=\"ez-toc-section-end\"><\/span><\/h3>\r\n<p>Filters are usually located in the return air duct or inside the air handler unit. Common locations include:<\/p>\r\n<ul>\r\n<li>Behind a vent grille on a wall or ceiling<\/li>\r\n<li>Inside the indoor unit&#8217;s filter slot<\/li>\r\n<li>Near the blower compartment<\/li>\r\n<\/ul>\r\n<h3><span class=\"ez-toc-section\" id=\"Step_3_Check_the_Filter_Size\"><\/span>Step 3: Check the Filter Size<span class=\"ez-toc-section-end\"><\/span><\/h3>\r\n<p>Look for the filter size printed on the frame (e.g., 16x25x1). Make sure you purchase the correct size and type recommended by your manufacturer.<\/p>\r\n<h3><span class=\"ez-toc-section\" id=\"Step_4_Remove_the_Old_Filter\"><\/span>Step 4: Remove the Old Filter<span class=\"ez-toc-section-end\"><\/span><\/h3>\r\n<p>Carefully slide the old filter out, noting the direction of the airflow arrows on the frame.<\/p>\r\n<h3><span class=\"ez-toc-section\" id=\"Step_5_Insert_the_New_Filter\"><\/span>Step 5: Insert the New Filter<span class=\"ez-toc-section-end\"><\/span><\/h3>\r\n<p>Place the new filter into the slot with the arrows pointing in the correct airflow direction. Ensure it fits snugly without bending.<\/p>\r\n<h3><span class=\"ez-toc-section\" id=\"Step_6_Turn_the_System_Back_On\"><\/span>Step 6: Turn the System Back On<span class=\"ez-toc-section-end\"><\/span><\/h3>\r\n<p>Once the filter is secure, turn your system back on and enjoy cleaner, healthier air.<\/p>\r\n<h2><span class=\"ez-toc-section\" id=\"Common_Mistakes_to_Avoid\"><\/span>Common Mistakes to Avoid<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n<ul>\r\n<li>Forgetting to replace the filter for months at a time<\/li>\r\n<li>Using the wrong filter size or type<\/li>\r\n<li>Installing the filter with the airflow arrows pointing the wrong way<\/li>\r\n<li>Choosing the cheapest filter without considering quality<\/li>\r\n<\/ul>\r\n<hr>\r\n<h2><span class=\"ez-toc-section\" id=\"FAQs_About_Changing_Your_AC_Filter\"><\/span>FAQs About Changing Your AC Filter<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\n<div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-68e625479f83b\"><strong class=\"schema-faq-question\">How do I know when my air conditioner filter needs changing?<\/strong> <p class=\"schema-faq-answer\">If you notice reduced airflow, more dust around your home, or increased allergy symptoms, it may be time to replace your filter.<\/p><\/div> <div class=\"schema-faq-section\" id=\"faq-question-68e625479f866\"><strong class=\"schema-faq-question\">Can I clean and reuse my AC filter?<\/strong> <p class=\"schema-faq-answer\">Most disposable filters should be replaced, not cleaned. Some high-quality filters are reusable and can be washed, but always check your manufacturer&#8217;s instructions.<\/p><\/div> <div class=\"schema-faq-section\" id=\"faq-question-68e625479f88a\"><strong class=\"schema-faq-question\">Does changing my AC filter really lower energy bills?<\/strong> <p class=\"schema-faq-answer\">Yes. A clean filter allows your system to work more efficiently, which can reduce your monthly utility costs. Learn more about <a href=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/air-conditioner-maintenance-energy-savings\/\">how air conditioner maintenance can affect energy savings<\/a>.<\/p><\/div> <\/div>\n\r\n<hr>\r\n<h2><span class=\"ez-toc-section\" id=\"Schedule_Professional_AC_Maintenance_in_St_Louis\"><\/span>Schedule Professional AC Maintenance in St. Louis<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n<p>While changing your air conditioner filter is a simple task, it is only one part of keeping your HVAC system running smoothly. Professional maintenance from Galmiche &#038; Sons can help prevent costly repairs, extend the life of your system, and keep your home comfortable year-round.<\/p>\r\n<p>If you are unsure how to change your air conditioner filter, or if you want a thorough tune-up from trusted local experts, contact Galmiche &#038; Sons today. We proudly serve St. Louis and the surrounding areas with expert HVAC installation, maintenance, and repair services.<\/p>\r\n<p>Call our <a href=\"https:\/\/www.galmicheandsons.com\/contact-galmiche.php\">heating and air conditioning<\/a> experts now or schedule your service online to keep your system running efficiently and your air clean all year long.<\/p>","protected":false},"excerpt":{"rendered":"<p>Keeping your air conditioner running at peak performance is essential, especially during the hot and humid St. Louis summers. One of the simplest yet most important maintenance tasks you can perform is to change your air conditioner filter regularly. A clean filter not only improves your home&#8217;s indoor air quality but also helps your system run more efficiently, saving you money on energy bills and extending the life of your unit. At Galmiche &#038; Sons, we have been helping St. &hellip; <a href=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/how-to-change-your-air-conditioner-filter\/\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">How to Change Your Air Conditioner Filter Like a Pro<\/span><\/a><\/p>\n","protected":false},"author":6,"featured_media":18158,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_mbp_gutenberg_autopost":false,"footnotes":""},"categories":[4,13,5,21],"tags":[],"class_list":["post-18057","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-air-conditioner-maintenance","category-air-conditioner-tips","category-air-conditioners","category-air-filter"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>How to Change Your Air Conditioner Filter Like a Pro | St. Louis HVAC Tips<\/title>\n<meta name=\"description\" content=\"Discover how to change your air conditioner filter like a pro! Improve air quality, boost efficiency, and save on energy bills with our expert guide.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/how-to-change-your-air-conditioner-filter\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"How to Change Your Air Conditioner Filter Like a Pro | St. Louis HVAC Tips\" \/>\n<meta property=\"og:description\" content=\"Discover how to change your air conditioner filter like a pro! 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