{"id":20253,"date":"2026-07-16T13:44:14","date_gmt":"2026-07-16T18:44:14","guid":{"rendered":"https:\/\/www.galmicheandsons.com\/hvac-blog\/?p=20253"},"modified":"2026-07-16T13:44:14","modified_gmt":"2026-07-16T18:44:14","slug":"frozen-heat-pump","status":"publish","type":"post","link":"https:\/\/www.galmicheandsons.com\/hvac-blog\/frozen-heat-pump\/","title":{"rendered":"Frozen Heat Pump Troubleshooting Guide: Why Your Heat Pump Is Freezing Up"},"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\/frozen-heat-pump\/#Is_a_Frozen_Heat_Pump_Ever_Normal\" >Is a Frozen Heat Pump Ever Normal?<\/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\/frozen-heat-pump\/#Common_Causes_of_a_Frozen_Heat_Pump\" >Common Causes of a Frozen Heat Pump<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/frozen-heat-pump\/#Restricted_Airflow\" >Restricted Airflow<\/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\/frozen-heat-pump\/#Refrigerant_Leaks\" >Refrigerant Leaks<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/frozen-heat-pump\/#Defrost_Cycle_Malfunctions\" >Defrost Cycle Malfunctions<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/frozen-heat-pump\/#Dirty_Outdoor_Coil\" >Dirty Outdoor Coil<\/a><\/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\/frozen-heat-pump\/#Extremely_Cold_Weather\" >Extremely Cold Weather<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/frozen-heat-pump\/#What_Should_You_Do_If_Your_Heat_Pump_Is_Frozen\" >What Should You Do If Your Heat Pump Is Frozen?<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/frozen-heat-pump\/#How_to_Prevent_a_Frozen_Heat_Pump\" >How to Prevent a Frozen Heat Pump<\/a><\/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\/frozen-heat-pump\/#Frequently_Asked_Questions\" >Frequently Asked Questions<\/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\/frozen-heat-pump\/#Schedule_Frozen_Heat_Pump_Repair_in_St_Louis_Today\" >Schedule Frozen Heat Pump Repair in St. Louis Today<\/a><\/li><\/ul><\/nav><\/div>\n<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-content\/uploads\/2026\/07\/frozen-heat-pump-1-300x185.jpg\" alt=\"Frozen Heat Pump Troubleshooting Guide: Why Your Heat Pump Is Freezing Up\" width=\"300\" height=\"185\" class=\"alignright size-medium wp-image-20293\" srcset=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-content\/uploads\/2026\/07\/frozen-heat-pump-1-300x185.jpg 300w, https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-content\/uploads\/2026\/07\/frozen-heat-pump-1.jpg 600w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><p>Seeing ice on your heat pump can be alarming, especially if it is affecting your home&#8217;s comfort. While a small amount of frost on the outdoor unit during cold weather is normal, a frozen heat pump that remains covered in ice or stops heating and cooling properly is a sign that something needs attention.<\/p>\r\n<p>A heat pump that is freezing up can lose efficiency, struggle to maintain comfortable indoor temperatures, and suffer damage if the underlying issue is not corrected. Fortunately, many frozen heat pump problems can be identified early with the right troubleshooting steps.<\/p>\r\n<p>At Galmiche &#038; Sons, we help homeowners throughout the St. Louis area diagnose and repair frozen heat pumps quickly to restore dependable, energy-efficient performance. Read on to learn more or contact our team for <a href=\"https:\/\/www.galmicheandsons.com\/heat-pump-repair.html\">heat pump repair<\/a> services in St. Louis.<\/p>\r\n<h2><span class=\"ez-toc-section\" id=\"Is_a_Frozen_Heat_Pump_Ever_Normal\"><\/span>Is a Frozen Heat Pump Ever Normal?<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n<p>Yes, under certain conditions.<\/p>\r\n<p>During cold, humid weather, frost can naturally form on the outdoor coil as your heat pump extracts heat from the outside air. To remove this frost, your system periodically enters a defrost cycle that melts the ice before it can build up.<\/p>\r\n<p>If the frost disappears after a few minutes, your system is operating normally.<\/p>\r\n<p>However, if your heat pump is freezing up, <a href=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/why-is-my-heat-pump-blowing-cold-air\/\">blowing cold air<\/a>, and remains covered in thick ice or snow, professional service may be needed.<\/p>\r\n<h2><span class=\"ez-toc-section\" id=\"Common_Causes_of_a_Frozen_Heat_Pump\"><\/span>Common Causes of a Frozen Heat Pump<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n<p>Several issues can cause excessive ice buildup on either the indoor or outdoor unit.<\/p>\r\n<h3><span class=\"ez-toc-section\" id=\"Restricted_Airflow\"><\/span>Restricted Airflow<span class=\"ez-toc-section-end\"><\/span><\/h3>\r\n<p>Poor airflow is one of the leading causes of a frozen heat pump.<\/p>\r\n<p>When airflow is restricted, the system cannot transfer heat efficiently, allowing moisture on the coils to freeze.<\/p>\r\n<p>Common airflow problems include:<\/p>\r\n<ul>\r\n<li>Dirty air filters<\/li>\r\n<li>Blocked supply or return vents<\/li>\r\n<li>Dirty indoor coils<\/li>\r\n<li>Obstructed outdoor unit<\/li>\r\n<li>Blower motor issues<\/li>\r\n<\/ul>\r\n<p>Replacing your air filter regularly and keeping vents open can help prevent many airflow-related problems.<\/p>\r\n<p>Routine <a href=\"https:\/\/www.galmicheandsons.com\/heat-pump-maintenance.html\">Heat Pump Maintenance<\/a> also helps identify airflow issues before they lead to frozen coils.<\/p>\r\n<h3><span class=\"ez-toc-section\" id=\"Refrigerant_Leaks\"><\/span>Refrigerant Leaks<span class=\"ez-toc-section-end\"><\/span><\/h3>\r\n<p>Low refrigerant levels reduce the pressure inside the system, causing coil temperatures to drop below freezing.<\/p>\r\n<p>As moisture freezes on the coils, ice continues to build until the system can no longer operate efficiently.<\/p>\r\n<p>Signs of low refrigerant may include:<\/p>\r\n<ul>\r\n<li>Weak airflow<\/li>\r\n<li>Reduced heating or cooling<\/li>\r\n<li>Ice buildup<\/li>\r\n<li>Longer operating cycles<\/li>\r\n<li>Higher energy bills<\/li>\r\n<\/ul>\r\n<p>Because refrigerant leaks require specialized equipment and EPA-certified handling, they should always be repaired by a qualified HVAC technician.<\/p>\r\n<p>Learn more about <a href=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/heat-pump-not-heating-or-cooling\/\">why your heat pump is not heating or cooling properly<\/a>.<\/p>\r\n<h2><span class=\"ez-toc-section\" id=\"Defrost_Cycle_Malfunctions\"><\/span>Defrost Cycle Malfunctions<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n<p>Modern heat pumps automatically remove frost during winter operation through a built-in defrost cycle.<\/p>\r\n<p>If components involved in this process fail, the ice continues to accumulate instead of melting away.<\/p>\r\n<p>Possible causes include:<\/p>\r\n<ul>\r\n<li>Faulty defrost control board<\/li>\r\n<li>Defective sensors<\/li>\r\n<li>Bad reversing valve<\/li>\r\n<li>Electrical problems<\/li>\r\n<\/ul>\r\n<p>A malfunctioning defrost system often requires professional <a href=\"https:\/\/www.galmicheandsons.com\/heat-pump-repair.html\">Heat Pump Repair<\/a> to restore normal operation.<\/p>\r\n<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-content\/uploads\/2026\/07\/frozen-heat-pump-2-300x200.jpg\" alt=\"Troubleshooting Your Frozen Heat Pump\" width=\"300\" height=\"200\" class=\"alignright size-medium wp-image-20294\" srcset=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-content\/uploads\/2026\/07\/frozen-heat-pump-2-300x200.jpg 300w, https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-content\/uploads\/2026\/07\/frozen-heat-pump-2.jpg 600w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><h2><span class=\"ez-toc-section\" id=\"Dirty_Outdoor_Coil\"><\/span>Dirty Outdoor Coil<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n<p>Leaves, dirt, grass clippings, and other debris can reduce airflow through the outdoor unit.<\/p>\r\n<p>When airflow is restricted, heat transfer becomes less effective, increasing the likelihood of ice formation.<\/p>\r\n<p>Homeowners should regularly inspect the outdoor unit and gently remove leaves, branches, or other debris from around the equipment.<\/p>\r\n<h2><span class=\"ez-toc-section\" id=\"Extremely_Cold_Weather\"><\/span>Extremely Cold Weather<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n<p>Although today&#8217;s heat pumps are designed to perform efficiently in cold climates, prolonged freezing temperatures can sometimes result in temporary frost accumulation.<\/p>\r\n<p>Normal frost should disappear during the defrost cycle.<\/p>\r\n<p>If heavy ice remains after multiple defrost cycles, there is likely another issue affecting your system.<\/p>\r\n<h2><span class=\"ez-toc-section\" id=\"What_Should_You_Do_If_Your_Heat_Pump_Is_Frozen\"><\/span>What Should You Do If Your Heat Pump Is Frozen?<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n<p>If you notice excessive ice buildup, follow these basic troubleshooting steps.<\/p>\r\n<ul>\r\n<li><strong>Check your air filter<\/strong>: Replace a dirty filter if necessary.<\/li>\r\n<li><strong>Inspect the outdoor<\/strong> <strong>unit<\/strong>: Remove leaves, branches, or snow that may be restricting airflow around the unit.<\/li>\r\n<li><strong>Verify your thermostat settings<\/strong>: Confirm the system is operating in the correct heating mode.<\/li>\r\n<li><strong>Do not chip away ice<\/strong>: Using sharp tools to remove ice can damage delicate coils and refrigerant lines.<\/li>\r\n<li><strong>Schedule professional service<\/strong>: If the ice does not melt naturally or continues returning, it is time for professional diagnosis.<\/li>\r\n<\/ul>\r\n<p>Experiencing other heat pump problems? Learn more about <a href=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/common-heat-pump-problems-and-solutions\/\">common heat pump problems and how to fix them<\/a>.<\/p>\r\n<h2><span class=\"ez-toc-section\" id=\"How_to_Prevent_a_Frozen_Heat_Pump\"><\/span>How to Prevent a Frozen Heat Pump<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n<p>Preventive maintenance is the best defense against frozen heat pump problems.<\/p>\r\n<p>Professional inspections allow technicians to:<\/p>\r\n<ul>\r\n<li>Clean indoor and outdoor coils<\/li>\r\n<li>Check refrigerant levels<\/li>\r\n<li>Inspect electrical components<\/li>\r\n<li>Test the defrost cycle<\/li>\r\n<li>Verify proper airflow<\/li>\r\n<li>Identify worn parts before they fail<\/li>\r\n<\/ul>\r\n<p>Regular maintenance helps improve efficiency while reducing the risk of unexpected breakdowns.<\/p>\r\n<p>If repeated freezing problems occur because of aging equipment, our <a href=\"https:\/\/www.galmicheandsons.com\/heat-pump-replacement.html\">Heat Pump Replacement<\/a> services may provide a more reliable long-term solution.<\/p>\r\n<hr>\r\n<h2><span class=\"ez-toc-section\" id=\"Frequently_Asked_Questions\"><\/span>Frequently Asked Questions<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n<div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-1784186052936\"><strong class=\"schema-faq-question\">Is it normal for a heat pump to have ice on it?<\/strong> <p class=\"schema-faq-answer\">A light layer of frost during winter is normal and should disappear during the defrost cycle. Thick ice that remains on the unit is not normal and should be inspected.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1784186061119\"><strong class=\"schema-faq-question\">Can I pour hot water on a frozen heat pump?<\/strong> <p class=\"schema-faq-answer\">No. Rapid temperature changes may damage components. It is safer to allow the defrost cycle to operate or have the system professionally inspected if the ice does not clear.<\/p> <\/div> <\/div>\r\n\r\n<hr>\r\n<h2><span class=\"ez-toc-section\" id=\"Schedule_Frozen_Heat_Pump_Repair_in_St_Louis_Today\"><\/span>Schedule Frozen Heat Pump Repair in St. Louis Today<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n<p>If your frozen heat pump is covered in ice or no longer keeping your home comfortable, do not ignore the problem. Addressing ice buildup early can prevent more extensive damage, improve efficiency, and restore reliable heating and cooling.<\/p>\r\n<p>At Galmiche &#038; Sons, our experienced technicians provide fast, dependable heat pump repair throughout the St. Louis area. Whether your system needs refrigerant repairs, defrost system service, maintenance, or replacement, we have the expertise to get your heat pump operating properly again.<\/p>\r\n<p><strong>Contact Galmiche &#038; Sons today to schedule professional heat pump repair in St. Louis and let our team restore your home&#8217;s comfort with expert service you can trust.<\/strong><\/p>","protected":false},"excerpt":{"rendered":"<p>Seeing ice on your heat pump can be alarming, especially if it is affecting your home&#8217;s comfort. While a small amount of frost on the outdoor unit during cold weather is normal, a frozen heat pump that remains covered in ice or stops heating and cooling properly is a sign that something needs attention. A heat pump that is freezing up can lose efficiency, struggle to maintain comfortable indoor temperatures, and suffer damage if the underlying issue is not corrected. &hellip; <a href=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/frozen-heat-pump\/\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">Frozen Heat Pump Troubleshooting Guide: Why Your Heat Pump Is Freezing Up<\/span><\/a><\/p>\n","protected":false},"author":6,"featured_media":20293,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_mbp_gutenberg_autopost":false,"footnotes":""},"categories":[31,59,30,26,38],"tags":[],"class_list":["post-20253","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-heat-pump-repair","category-heat-pump-tips","category-heat-pump-troubleshooting","category-heat-pumps","category-heating-cooling-faqs"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Frozen Heat Pump Troubleshooting Guide | St. Louis HVAC Tips<\/title>\n<meta name=\"description\" content=\"Don&#039;t let a frozen heat pump disrupt your comfort! Explore our troubleshooting guide to identify issues and learn how Galmiche &amp; Sons can help you today.\" \/>\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\/frozen-heat-pump\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Frozen Heat Pump Troubleshooting Guide | St. Louis HVAC Tips\" \/>\n<meta property=\"og:description\" content=\"Don&#039;t let a frozen heat pump disrupt your comfort! Explore our troubleshooting guide to identify issues and learn how Galmiche &amp; Sons can help you today.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/frozen-heat-pump\/\" \/>\n<meta property=\"og:site_name\" content=\"St. Louis HVAC Tips - Galmiche &amp; Sons\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/GalmicheAndSons\/\" \/>\n<meta property=\"article:published_time\" content=\"2026-07-16T18:44:14+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-content\/uploads\/2026\/07\/frozen-heat-pump-1.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"600\" \/>\n\t<meta property=\"og:image:height\" content=\"370\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Steve Dulle\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@GalmicheAndSon\" \/>\n<meta name=\"twitter:site\" content=\"@GalmicheAndSon\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Steve Dulle\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"5 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/frozen-heat-pump\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/frozen-heat-pump\\\/\"},\"author\":{\"name\":\"Steve Dulle\",\"@id\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/#\\\/schema\\\/person\\\/b90d5d47a6f393d93d6459a9aa8b2fe1\"},\"headline\":\"Frozen Heat Pump Troubleshooting Guide: Why Your Heat Pump Is Freezing Up\",\"datePublished\":\"2026-07-16T18:44:14+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/frozen-heat-pump\\\/\"},\"wordCount\":988,\"publisher\":{\"@id\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/frozen-heat-pump\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/wp-content\\\/uploads\\\/2026\\\/07\\\/frozen-heat-pump-1.jpg\",\"articleSection\":[\"Heat Pump Repair\",\"Heat Pump Tips\",\"Heat Pump Troubleshooting\",\"Heat Pumps\",\"Heating &amp; Cooling FAQs\"],\"inLanguage\":\"en-US\"},{\"@type\":[\"WebPage\",\"FAQPage\"],\"@id\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/frozen-heat-pump\\\/\",\"url\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/frozen-heat-pump\\\/\",\"name\":\"Frozen Heat Pump Troubleshooting Guide | St. Louis HVAC Tips\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/frozen-heat-pump\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/frozen-heat-pump\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/wp-content\\\/uploads\\\/2026\\\/07\\\/frozen-heat-pump-1.jpg\",\"datePublished\":\"2026-07-16T18:44:14+00:00\",\"description\":\"Don't let a frozen heat pump disrupt your comfort! Explore our troubleshooting guide to identify issues and learn how Galmiche & Sons can help you today.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/frozen-heat-pump\\\/#breadcrumb\"},\"mainEntity\":[{\"@id\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/frozen-heat-pump\\\/#faq-question-1784186052936\"},{\"@id\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/frozen-heat-pump\\\/#faq-question-1784186061119\"}],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/frozen-heat-pump\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/frozen-heat-pump\\\/#primaryimage\",\"url\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/wp-content\\\/uploads\\\/2026\\\/07\\\/frozen-heat-pump-1.jpg\",\"contentUrl\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/wp-content\\\/uploads\\\/2026\\\/07\\\/frozen-heat-pump-1.jpg\",\"width\":600,\"height\":370,\"caption\":\"Frozen Heat Pump Troubleshooting Guide: Why Your Heat Pump Is Freezing Up\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/frozen-heat-pump\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"HVAC Tips\",\"item\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Heat Pumps\",\"item\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/category\\\/heat-pumps\\\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Heat Pump Troubleshooting\",\"item\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/category\\\/heat-pumps\\\/heat-pump-troubleshooting\\\/\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"Frozen Heat Pump Troubleshooting Guide: Why Your Heat Pump Is Freezing Up\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/#website\",\"url\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/\",\"name\":\"St. Louis HVAC Tips - Galmiche & Sons\",\"description\":\"For Heating and Cooling services in St. Louis, contact Galmiche &amp; Sons, your St. Louis commercial and residential HVAC installation, maintenance, and repair experts.\",\"publisher\":{\"@id\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/#organization\",\"name\":\"Galmiche & Sons Heating & Cooling\",\"url\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/wp-content\\\/uploads\\\/organization-logo.png\",\"contentUrl\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/wp-content\\\/uploads\\\/organization-logo.png\",\"width\":\"696\",\"height\":\"696\",\"caption\":\"Galmiche & Sons Heating & Cooling\"},\"image\":{\"@id\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/#\\\/schema\\\/logo\\\/image\\\/\"},\"sameAs\":[\"https:\\\/\\\/www.facebook.com\\\/GalmicheAndSons\\\/\",\"https:\\\/\\\/x.com\\\/GalmicheAndSon\"]},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/#\\\/schema\\\/person\\\/b90d5d47a6f393d93d6459a9aa8b2fe1\",\"name\":\"Steve Dulle\",\"sameAs\":[\"https:\\\/\\\/www.silverscopedesign.com\\\/\",\"https:\\\/\\\/www.linkedin.com\\\/in\\\/stevedulle\\\/\"]},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/frozen-heat-pump\\\/#faq-question-1784186052936\",\"position\":1,\"url\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/frozen-heat-pump\\\/#faq-question-1784186052936\",\"name\":\"Is it normal for a heat pump to have ice on it?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"A light layer of frost during winter is normal and should disappear during the defrost cycle. Thick ice that remains on the unit is not normal and should be inspected.\",\"inLanguage\":\"en-US\"},\"inLanguage\":\"en-US\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/frozen-heat-pump\\\/#faq-question-1784186061119\",\"position\":2,\"url\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/frozen-heat-pump\\\/#faq-question-1784186061119\",\"name\":\"Can I pour hot water on a frozen heat pump?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"No. Rapid temperature changes may damage components. It is safer to allow the defrost cycle to operate or have the system professionally inspected if the ice does not clear.\",\"inLanguage\":\"en-US\"},\"inLanguage\":\"en-US\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Frozen Heat Pump Troubleshooting Guide | St. Louis HVAC Tips","description":"Don't let a frozen heat pump disrupt your comfort! Explore our troubleshooting guide to identify issues and learn how Galmiche & Sons can help you today.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.galmicheandsons.com\/hvac-blog\/frozen-heat-pump\/","og_locale":"en_US","og_type":"article","og_title":"Frozen Heat Pump Troubleshooting Guide | St. Louis HVAC Tips","og_description":"Don't let a frozen heat pump disrupt your comfort! Explore our troubleshooting guide to identify issues and learn how Galmiche & Sons can help you today.","og_url":"https:\/\/www.galmicheandsons.com\/hvac-blog\/frozen-heat-pump\/","og_site_name":"St. Louis HVAC Tips - Galmiche &amp; Sons","article_publisher":"https:\/\/www.facebook.com\/GalmicheAndSons\/","article_published_time":"2026-07-16T18:44:14+00:00","og_image":[{"width":600,"height":370,"url":"https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-content\/uploads\/2026\/07\/frozen-heat-pump-1.jpg","type":"image\/jpeg"}],"author":"Steve Dulle","twitter_card":"summary_large_image","twitter_creator":"@GalmicheAndSon","twitter_site":"@GalmicheAndSon","twitter_misc":{"Written by":"Steve Dulle","Est. reading time":"5 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.galmicheandsons.com\/hvac-blog\/frozen-heat-pump\/#article","isPartOf":{"@id":"https:\/\/www.galmicheandsons.com\/hvac-blog\/frozen-heat-pump\/"},"author":{"name":"Steve Dulle","@id":"https:\/\/www.galmicheandsons.com\/hvac-blog\/#\/schema\/person\/b90d5d47a6f393d93d6459a9aa8b2fe1"},"headline":"Frozen Heat Pump Troubleshooting Guide: Why Your Heat Pump Is Freezing Up","datePublished":"2026-07-16T18:44:14+00:00","mainEntityOfPage":{"@id":"https:\/\/www.galmicheandsons.com\/hvac-blog\/frozen-heat-pump\/"},"wordCount":988,"publisher":{"@id":"https:\/\/www.galmicheandsons.com\/hvac-blog\/#organization"},"image":{"@id":"https:\/\/www.galmicheandsons.com\/hvac-blog\/frozen-heat-pump\/#primaryimage"},"thumbnailUrl":"https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-content\/uploads\/2026\/07\/frozen-heat-pump-1.jpg","articleSection":["Heat Pump Repair","Heat Pump Tips","Heat Pump Troubleshooting","Heat Pumps","Heating &amp; Cooling FAQs"],"inLanguage":"en-US"},{"@type":["WebPage","FAQPage"],"@id":"https:\/\/www.galmicheandsons.com\/hvac-blog\/frozen-heat-pump\/","url":"https:\/\/www.galmicheandsons.com\/hvac-blog\/frozen-heat-pump\/","name":"Frozen Heat Pump Troubleshooting Guide | St. Louis HVAC Tips","isPartOf":{"@id":"https:\/\/www.galmicheandsons.com\/hvac-blog\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.galmicheandsons.com\/hvac-blog\/frozen-heat-pump\/#primaryimage"},"image":{"@id":"https:\/\/www.galmicheandsons.com\/hvac-blog\/frozen-heat-pump\/#primaryimage"},"thumbnailUrl":"https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-content\/uploads\/2026\/07\/frozen-heat-pump-1.jpg","datePublished":"2026-07-16T18:44:14+00:00","description":"Don't let a frozen heat pump disrupt your comfort! Explore our troubleshooting guide to identify issues and learn how Galmiche & Sons can help you today.","breadcrumb":{"@id":"https:\/\/www.galmicheandsons.com\/hvac-blog\/frozen-heat-pump\/#breadcrumb"},"mainEntity":[{"@id":"https:\/\/www.galmicheandsons.com\/hvac-blog\/frozen-heat-pump\/#faq-question-1784186052936"},{"@id":"https:\/\/www.galmicheandsons.com\/hvac-blog\/frozen-heat-pump\/#faq-question-1784186061119"}],"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.galmicheandsons.com\/hvac-blog\/frozen-heat-pump\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.galmicheandsons.com\/hvac-blog\/frozen-heat-pump\/#primaryimage","url":"https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-content\/uploads\/2026\/07\/frozen-heat-pump-1.jpg","contentUrl":"https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-content\/uploads\/2026\/07\/frozen-heat-pump-1.jpg","width":600,"height":370,"caption":"Frozen Heat Pump Troubleshooting Guide: Why Your Heat Pump Is Freezing Up"},{"@type":"BreadcrumbList","@id":"https:\/\/www.galmicheandsons.com\/hvac-blog\/frozen-heat-pump\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"HVAC Tips","item":"https:\/\/www.galmicheandsons.com\/hvac-blog\/"},{"@type":"ListItem","position":2,"name":"Heat Pumps","item":"https:\/\/www.galmicheandsons.com\/hvac-blog\/category\/heat-pumps\/"},{"@type":"ListItem","position":3,"name":"Heat Pump Troubleshooting","item":"https:\/\/www.galmicheandsons.com\/hvac-blog\/category\/heat-pumps\/heat-pump-troubleshooting\/"},{"@type":"ListItem","position":4,"name":"Frozen Heat Pump Troubleshooting Guide: Why Your Heat Pump Is Freezing Up"}]},{"@type":"WebSite","@id":"https:\/\/www.galmicheandsons.com\/hvac-blog\/#website","url":"https:\/\/www.galmicheandsons.com\/hvac-blog\/","name":"St. Louis HVAC Tips - Galmiche & Sons","description":"For Heating and Cooling services in St. Louis, contact Galmiche &amp; Sons, your St. Louis commercial and residential HVAC installation, maintenance, and repair experts.","publisher":{"@id":"https:\/\/www.galmicheandsons.com\/hvac-blog\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.galmicheandsons.com\/hvac-blog\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/www.galmicheandsons.com\/hvac-blog\/#organization","name":"Galmiche & Sons Heating & Cooling","url":"https:\/\/www.galmicheandsons.com\/hvac-blog\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.galmicheandsons.com\/hvac-blog\/#\/schema\/logo\/image\/","url":"https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-content\/uploads\/organization-logo.png","contentUrl":"https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-content\/uploads\/organization-logo.png","width":"696","height":"696","caption":"Galmiche & Sons Heating & Cooling"},"image":{"@id":"https:\/\/www.galmicheandsons.com\/hvac-blog\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/GalmicheAndSons\/","https:\/\/x.com\/GalmicheAndSon"]},{"@type":"Person","@id":"https:\/\/www.galmicheandsons.com\/hvac-blog\/#\/schema\/person\/b90d5d47a6f393d93d6459a9aa8b2fe1","name":"Steve Dulle","sameAs":["https:\/\/www.silverscopedesign.com\/","https:\/\/www.linkedin.com\/in\/stevedulle\/"]},{"@type":"Question","@id":"https:\/\/www.galmicheandsons.com\/hvac-blog\/frozen-heat-pump\/#faq-question-1784186052936","position":1,"url":"https:\/\/www.galmicheandsons.com\/hvac-blog\/frozen-heat-pump\/#faq-question-1784186052936","name":"Is it normal for a heat pump to have ice on it?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"A light layer of frost during winter is normal and should disappear during the defrost cycle. Thick ice that remains on the unit is not normal and should be inspected.","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/www.galmicheandsons.com\/hvac-blog\/frozen-heat-pump\/#faq-question-1784186061119","position":2,"url":"https:\/\/www.galmicheandsons.com\/hvac-blog\/frozen-heat-pump\/#faq-question-1784186061119","name":"Can I pour hot water on a frozen heat pump?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"No. Rapid temperature changes may damage components. It is safer to allow the defrost cycle to operate or have the system professionally inspected if the ice does not clear.","inLanguage":"en-US"},"inLanguage":"en-US"}]}},"_links":{"self":[{"href":"https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-json\/wp\/v2\/posts\/20253","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-json\/wp\/v2\/comments?post=20253"}],"version-history":[{"count":1,"href":"https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-json\/wp\/v2\/posts\/20253\/revisions"}],"predecessor-version":[{"id":20320,"href":"https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-json\/wp\/v2\/posts\/20253\/revisions\/20320"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-json\/wp\/v2\/media\/20293"}],"wp:attachment":[{"href":"https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-json\/wp\/v2\/media?parent=20253"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-json\/wp\/v2\/categories?post=20253"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-json\/wp\/v2\/tags?post=20253"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}