{"id":3595,"date":"2018-07-02T02:02:34","date_gmt":"2018-07-02T07:02:34","guid":{"rendered":"https:\/\/www.galmicheandsons.com\/hvac-blog\/?p=3595"},"modified":"2024-08-16T13:36:20","modified_gmt":"2024-08-16T18:36:20","slug":"reasons-for-dirty-hvac-filter","status":"publish","type":"post","link":"https:\/\/www.galmicheandsons.com\/hvac-blog\/reasons-for-dirty-hvac-filter\/","title":{"rendered":"Common Reasons for a Dirty HVAC Filter"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_84 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\/reasons-for-dirty-hvac-filter\/#Reasons_for_a_Dirty_HVAC_Filter\" >Reasons for a Dirty HVAC Filter<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/reasons-for-dirty-hvac-filter\/#Thermostat_fan_is_set_to_%E2%80%98ON\" >Thermostat fan is set to &#8216;ON&#8217;<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/reasons-for-dirty-hvac-filter\/#Leaky_Air_Ducts\" >Leaky Air Ducts<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/reasons-for-dirty-hvac-filter\/#Pet_Hair\" >Pet Hair<\/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\/reasons-for-dirty-hvac-filter\/#Dusty_Home\" >Dusty Home<\/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\/reasons-for-dirty-hvac-filter\/#Your_Filter_MERV_Rating\" >Your Filter MERV Rating<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/reasons-for-dirty-hvac-filter\/#Contact_Galmiche_Sons_for_Help_with_Your_Dirty_HVAC_Filter\" >Contact Galmiche &amp; Sons for Help with Your Dirty HVAC Filter<\/a><\/li><\/ul><\/nav><\/div>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-content\/uploads\/reasons-for-dirty-hvac-filter-1.jpg\" alt=\"Dirty HVAC Filter\" width=\"300\" height=\"200\" class=\"alignright size-full wp-image-3626\" \/><\/p>\n<p>A dirty HVAC filter can hinder the performance of your air conditioner. As most know, all homeowners should replace their dirty HVAC system filters on a regular schedule. However, if you notice when it is time for your scheduled replacement that the filter is completely covered with hair, dust, and other particles, you may wonder why it gets so dirty before the scheduled replacement and what can be done to solve the problem.<\/p>\n<p>Filters in your HVAC System are there for two purposes: <\/p>\n<ul>\n<li>they collect dirt and debris and prevent them from entering and harming the system<\/li>\n<li>they help eliminate harmful substances like dirt and dust from the air<\/li>\n<\/ul>\n<p>Without these filters, the particles will find their way through the components of your air conditioner and be blown back into your homes through the duct system. Additionally, dirt and debris can cause harm to your HVAC system and even shorten its lifespan.<\/p>\n<p>If you are experiencing an unusual accumulation of dirt on your HVAC filter, the experts at Galmiche &amp; Sons can handle it. Contact us in St. Louis at <span class=\"mobile_tel\"><span class=\"mobile_tel\">314-993-1110<\/span><\/span>. We specialize in serving the <a href=\"https:\/\/www.galmicheandsons.com\/contact-galmiche.php\">heating and air conditioning<\/a> needs of St. Louis businesses and homeowners and can get your dirty HVAC filter troubles sorted out.<\/p>\n<div class=\"clear\"><\/div>\n<h2><span class=\"ez-toc-section\" id=\"Reasons_for_a_Dirty_HVAC_Filter\"><\/span>Reasons for a Dirty HVAC Filter<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-content\/uploads\/reasons-for-dirty-hvac-filter-2.jpg\" alt=\"Causes for a Dirty HVAC Filter\" width=\"300\" height=\"361\" class=\"alignleft size-full wp-image-3627\" style=\"border:none\" srcset=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-content\/uploads\/reasons-for-dirty-hvac-filter-2.jpg 300w, https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-content\/uploads\/reasons-for-dirty-hvac-filter-2-249x300.jpg 249w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/p>\n<p>Every filter has a MERV (Minimum Efficiency Reporting Value) Rating. This refers to the size of air contaminants a filter can catch. The higher the MERV Rating of an air filter, the more frequently it will need replacement. So, always consider the filter&#8217;s rating whenever you replace the dirty HVAC filter. In general, most residential HVAC filters should be replaced once a month during summer and once every two months during winter. However, it is always best to check the manufacturers recommendations for your particular system or check with a local HVAC professional for the optimal replacement schedule. <\/p>\n<div class=\"clear\"><\/div>\n<p>If replacement is necessary before this, it may signal certain issues.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Thermostat_fan_is_set_to_%E2%80%98ON\"><\/span>Thermostat fan is set to &#8216;ON&#8217;<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>The AC fan has two options &#8211; &#8216;Auto&#8217; and &#8216;ON&#8217;. If the fan is set to ON, it runs 24\/7. As the air in your home circulates continuously through the HVAC filter and system, dirt and other contaminants are continuously attached to the filter at a fast rate. The AUTO setting uses less energy as the fan runs only when the system is actively heating or cooling your home.<\/p>\n<p><strong>What to do<\/strong>: It is typically recommended to use the AUTO setting, as it is more energy efficient and prevents extra wear on your system. However, if your home needs more filtration or you prefer the feeling of continuously moving air, use the ON setting, but keep in mind this will usually mean you need to replace the filter more frequently.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Leaky_Air_Ducts\"><\/span>Leaky Air Ducts<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Dust and dirt can be introduced into your home by leaks in the air ducts from areas like the attic or basement. The amount of dirt brought into your home determines the amount of dirt the filter accumulates.<\/p>\n<p><strong>What to do<\/strong>: Contact a professional to inspect your ductwork. The duct system should be repaired or replaced to ensure leak-free ducts. This will also prevent you from having a dirty HVAC filter, which may lead to frequent replacement.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Pet_Hair\"><\/span>Pet Hair<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Pets shed hair and this may float in the air or stick to your upholstery and carpets. When this hair is sucked into the <a href=\"https:\/\/www.galmicheandsons.com\/services.html\">HVAC<\/a> ducts, it contributes to your fuzzy filter. As a result, dust and dirt may accumulate faster on the dirty HVAC filter because of the pet hair.<\/p>\n<p><strong>What to do<\/strong>: Vacuuming your home daily and brushing your pets weekly can go a long way to reduce this problem.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Dusty_Home\"><\/span>Dusty Home<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>An unusually dusty home may contribute to your dirty HVAC filter. This may come from accumulated dust in rooms not frequently used or from a recent home construction project.<\/p>\n<p><strong>What to do<\/strong>: Always ensure the regular cleaning and vacuuming of your home to avoid dust and dirt in the HVAC filter. Also, make sure to close off vents and rooms during major construction and renovation projects.<\/p>\n<h3><span class=\"ez-toc-section\" id=\"Your_Filter_MERV_Rating\"><\/span>Your Filter MERV Rating<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p>Filters with high MERV rating are capable of trapping smaller particles and may accumulate excessive dirt and dust faster. This can cause clogging and excessive dirt on the HVAC filter, which restricts system airflow. Filters with low MERV ratings provide a good balance between system airflow and filtration efficiency.<\/p>\n<p><strong>What to do<\/strong>: Thicker filters may not be better &#8211; although they will give cleaner, fresher air to your home, it accelerates wear on the HVAC fan and lowers the energy efficiency of your system. Contact a HVAC expert that can help you weigh your options and choose the best filter for your system.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Contact_Galmiche_Sons_for_Help_with_Your_Dirty_HVAC_Filter\"><\/span>Contact Galmiche &amp; Sons for Help with Your Dirty HVAC Filter<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>Do you have concerns about your dirty HVAC filter? Our professionals can help you to either replace or fix it, while also finding the cause of your dirty HVAC filter. In the greater St. Louis area, contact us for help with any of your <a href=\"https:\/\/www.galmicheandsons.com\/contact-galmiche.php\">heating &amp; air conditioning<\/a> questions today!<\/p>\n","protected":false},"excerpt":{"rendered":"<p>A dirty HVAC filter can hinder the performance of your air conditioner. As most know, all homeowners should replace their dirty HVAC system filters on a regular schedule. However, if you notice when it is time for your scheduled replacement that the filter is completely covered with hair, dust, and other particles, you may wonder why it gets so dirty before the scheduled replacement and what can be done to solve the problem. Filters in your HVAC System are there &hellip; <a href=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/reasons-for-dirty-hvac-filter\/\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">Common Reasons for a Dirty HVAC Filter<\/span><\/a><\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_mbp_gutenberg_autopost":false,"footnotes":""},"categories":[21,22,32,17,2,10,48],"tags":[],"class_list":["post-3595","post","type-post","status-publish","format-standard","hentry","category-air-filter","category-diy-hvac-repair","category-diy-hvac-tips","category-hvac-system","category-hvac-tips","category-indoor-air-quality","category-pets-hvac"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Reasons for a Dirty HVAC Filter | St. Louis HVAC Tips<\/title>\n<meta name=\"description\" content=\"Common reasons for a dirty HVAC filter include pets, HVAC system use, construction, dirt, and more. Learn how to solve your dirty air filter problems\" \/>\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\/reasons-for-dirty-hvac-filter\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Reasons for a Dirty HVAC Filter | St. Louis HVAC Tips\" \/>\n<meta property=\"og:description\" content=\"Common reasons for a dirty HVAC filter include pets, HVAC system use, construction, dirt, and more. 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