{"id":7141,"date":"2020-02-05T02:59:36","date_gmt":"2020-02-05T08:59:36","guid":{"rendered":"https:\/\/www.galmicheandsons.com\/hvac-blog\/?p=7141"},"modified":"2024-08-16T14:08:18","modified_gmt":"2024-08-16T19:08:18","slug":"what-to-do-if-furnace-blowing-cold-air","status":"publish","type":"post","link":"https:\/\/www.galmicheandsons.com\/hvac-blog\/what-to-do-if-furnace-blowing-cold-air\/","title":{"rendered":"Furnace Troubleshooting: What To Do if Your Furnace is Blowing Cold Air"},"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\/what-to-do-if-furnace-blowing-cold-air\/#Check_These_Four_Things_First\" >Check These Four Things First<\/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\/what-to-do-if-furnace-blowing-cold-air\/#What_to_Do_if_Your_Furnace_Keeps_Blowing_Cold_Air\" >What to Do if Your Furnace Keeps Blowing Cold Air<\/a><\/li><\/ul><\/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\/what-to-do-if-furnace-blowing-cold-air\/#Get_More_Information_About_Why_Your_Furnace_is_Blowing_Cold_Air\" >Get More Information About Why Your Furnace is Blowing Cold Air<\/a><\/li><\/ul><\/nav><\/div>\n<p>If your furnace is blowing cold air, there are a few different issues that could be responsible. Furnaces rely on many closely interlinked components. That means that furnace issues, such as a furnace blowing cold air, can be difficult to diagnose. If you are not able to figure out why your furnace is blowing cold air, call you HVAC service team for help. Some furnace issues can be dealt with at home, but an important part of furnace safety is knowing when it is time to call in a HVAC professional.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-content\/uploads\/what-to-do-if-furnace-blowing-cold-air-1.jpg\" alt=\"What to do if Your Furnace is Blowing Cold Air\" width=\"600\" height=\"288\" class=\"aligncenter size-full wp-image-7167\" srcset=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-content\/uploads\/what-to-do-if-furnace-blowing-cold-air-1.jpg 600w, https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-content\/uploads\/what-to-do-if-furnace-blowing-cold-air-1-300x144.jpg 300w\" sizes=\"auto, (max-width: 600px) 100vw, 600px\" \/><\/p>\n<p>In the greater St. Louis area, if you are having issues with your furnace blowing cold air, and would like a seasoned <a href=\"https:\/\/www.galmicheandsons.com\/contact-galmiche.php\">heating &amp; air conditioning<\/a> professional to take a look, call Galmiche &amp; Sons today.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Check_These_Four_Things_First\"><\/span>Check These Four Things First<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>To start with the things you can do yourself, here are four ways to investigate a furnace that is blowing cold air. In the next section, we will cover how to determine when to call in a professional.<\/p>\n<ol>\n<li><strong>Check your thermostat&rsquo;s settings:<\/strong> One thing to look out for in particular is your thermostat&rsquo;s FAN setting. The FAN setting should be set to AUTO rather than ON. If you have it set to ON, the fan will blow air through your home even when your furnace is not heating that air.<\/li>\n<li><strong>Replace your furnace air filter<\/strong>: A dirty air filter can create problems for your home&rsquo;s HVAC system. Clogged air filters make it difficult for air to flow out of your furnace and can trip sensors in your HVAC system to turn off the furnace. <a href=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/changing-your-air-filter-a-step-by-step-guide\/\">Changing your air filter<\/a> is pretty easy and can help prevent wear and tear on your HVAC system even when you are not experiencing furnace problems.<\/li>\n<li><strong>Relight the pilot light<\/strong>: Sometimes, especially in older furnaces, the pilot light can go out and need to be re-lit. This is something you can do on your own as well. You can consult your furnace&rsquo;s manual for instructions on <a href=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/how-to-light-a-pilot-light-on-a-furnace\/\">how to light a pilot light<\/a> specific to your model. Even if the pilot light is on, turning it off and then relighting it again can help you fix a furnace that is blowing cold air.<\/li>\n<li><strong>Check your condensate line<\/strong>: Your furnace might be blowing cold air because of a blockage in your condensate line. When water produced by your HVAC system cannot drain correctly the system sometimes turns off automatically. Check for built up dust and mold in your condensate drain pan. Another potential issue is ice build-up, especially during cold weather. There are tutorials for unclogging condensate drain lines and, if the problem is ice, you can insulate the line with pipe insulation and tape.<\/li>\n<\/ol>\n<h3><span class=\"ez-toc-section\" id=\"What_to_Do_if_Your_Furnace_Keeps_Blowing_Cold_Air\"><\/span>What to Do if Your Furnace Keeps Blowing Cold Air<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-content\/uploads\/what-to-do-if-furnace-blowing-cold-air-2-300x215.jpg\" alt=\"Tips for a Furnace Blowing Cold Air\" width=\"300\" height=\"215\" class=\"alignright size-medium wp-image-7168\" srcset=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-content\/uploads\/what-to-do-if-furnace-blowing-cold-air-2-300x215.jpg 300w, https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-content\/uploads\/what-to-do-if-furnace-blowing-cold-air-2.jpg 600w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/p>\n<p>If you have checked each of these components and your furnace is still blowing cold air, it is time to get help finding out why. For pilot light issues, you should call a professional if your pilot light keeps going out repeatedly rather than once in a while. Similarly, if your condensate line appears not to be draining, but is not clogged or icy, it could be a problem with the condensate pump. In this case, too, you should get help from your HVAC service team in order to stop your furnace from blowing cold air.<\/p>\n<h2><span class=\"ez-toc-section\" id=\"Get_More_Information_About_Why_Your_Furnace_is_Blowing_Cold_Air\"><\/span>Get More Information About Why Your Furnace is Blowing Cold Air<span class=\"ez-toc-section-end\"><\/span><\/h2>\n<p>If you are still having issues with your furnace blowing cold air after reviewing these common signs and problems, connect with our <a href=\"https:\/\/www.galmicheandsons.com\/contact-galmiche.php\">heating &amp; air conditioning<\/a> professionals at Galmiche &amp; Sons today!<\/p>\n","protected":false},"excerpt":{"rendered":"<p>If your furnace is blowing cold air, there are a few different issues that could be responsible. Furnaces rely on many closely interlinked components. That means that furnace issues, such as a furnace blowing cold air, can be difficult to diagnose. If you are not able to figure out why your furnace is blowing cold air, call you HVAC service team for help. Some furnace issues can be dealt with at home, but an important part of furnace safety is &hellip; <a href=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/what-to-do-if-furnace-blowing-cold-air\/\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">Furnace Troubleshooting: What To Do if Your Furnace is Blowing Cold Air<\/span><\/a><\/p>\n","protected":false},"author":6,"featured_media":7167,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_mbp_gutenberg_autopost":false,"footnotes":""},"categories":[32,29,27,37,11],"tags":[],"class_list":["post-7141","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-diy-hvac-tips","category-furnace-repair","category-furnace-tips","category-furnace-troubleshooting","category-furnaces"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>What To Do 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