{"id":17300,"date":"2025-04-24T02:40:23","date_gmt":"2025-04-24T07:40:23","guid":{"rendered":"https:\/\/www.galmicheandsons.com\/hvac-blog\/?p=17300"},"modified":"2025-10-08T03:48:27","modified_gmt":"2025-10-08T08:48:27","slug":"how-long-does-it-take-to-install-an-ac-unit","status":"publish","type":"post","link":"https:\/\/www.galmicheandsons.com\/hvac-blog\/how-long-does-it-take-to-install-an-ac-unit\/","title":{"rendered":"How Long Does It Take to Install an AC Unit?"},"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-long-does-it-take-to-install-an-ac-unit\/#What_Factors_Affect_the_AC_Installation_Timeline\" >What Factors Affect the AC Installation Timeline?<\/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\/how-long-does-it-take-to-install-an-ac-unit\/#Type_of_Air_Conditioning_System\" >Type of Air Conditioning System<\/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\/how-long-does-it-take-to-install-an-ac-unit\/#Home_Layout_and_Accessibility\" >Home Layout and Accessibility<\/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\/how-long-does-it-take-to-install-an-ac-unit\/#New_Install_vs_Replacement\" >New Install vs. Replacement<\/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-long-does-it-take-to-install-an-ac-unit\/#Permits_and_Inspections\" >Permits and Inspections<\/a><\/li><\/ul><\/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\/how-long-does-it-take-to-install-an-ac-unit\/#Step-by-Step_Breakdown_of_a_Typical_AC_Installation_Process\" >Step-by-Step Breakdown of a Typical AC Installation Process<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/how-long-does-it-take-to-install-an-ac-unit\/#Step_1_Pre-Installation_Evaluation_1%E2%80%932_hours\" >Step 1: Pre-Installation Evaluation (1\u20132 hours)<\/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-long-does-it-take-to-install-an-ac-unit\/#Step_2_Equipment_Removal_1%E2%80%932_hours\" >Step 2: Equipment Removal (1\u20132 hours)<\/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-long-does-it-take-to-install-an-ac-unit\/#Step_3_Site_Preparation_1%E2%80%932_hours\" >Step 3: Site Preparation (1\u20132 hours)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/how-long-does-it-take-to-install-an-ac-unit\/#Step_4_New_Unit_Installation_3%E2%80%936_hours\" >Step 4: New Unit Installation (3\u20136 hours)<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/how-long-does-it-take-to-install-an-ac-unit\/#Step_5_Testing_and_Final_Inspection_1%E2%80%932_hours\" >Step 5: Testing and Final Inspection (1\u20132 hours)<\/a><\/li><\/ul><\/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-long-does-it-take-to-install-an-ac-unit\/#Common_Delays_to_Be_Aware_Of\" >Common Delays to Be Aware Of<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-13\" href=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/how-long-does-it-take-to-install-an-ac-unit\/#FAQs_About_AC_Installation_Timelines\" >FAQs About AC Installation Timelines<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-14\" href=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/how-long-does-it-take-to-install-an-ac-unit\/#Trust_Galmiche_Sons_for_Expert_AC_Installation_in_St_Louis\" >Trust Galmiche &amp; Sons for Expert AC Installation in St. Louis<\/a><\/li><\/ul><\/nav><\/div>\n<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-content\/uploads\/how-long-does-it-take-to-install-an-ac-unit-1-300x200.jpg\" alt=\"How Long Does It Take to Install an AC Unit?\" width=\"300\" height=\"200\" class=\"alignright size-medium wp-image-17360\" srcset=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-content\/uploads\/how-long-does-it-take-to-install-an-ac-unit-1-300x200.jpg 300w, https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-content\/uploads\/how-long-does-it-take-to-install-an-ac-unit-1.jpg 600w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><p>When you&#8217;re upgrading your air conditioning system or installing one in a new home, one of the most common questions homeowners ask is: <strong>how long does it take to install an AC unit?<\/strong> Whether you&#8217;re replacing an old unit or outfitting a new property in the St. Louis area, understanding the time commitment can help you plan ahead and avoid discomfort during the process.<\/p>\r\n<p>So just how long does it take to install an AC unit? Read on to learn more or contact the experts at Galmiche &amp; Sons in St. Louis to request a quote and plan for your <a href=\"https:\/\/www.galmicheandsons.com\/air-conditioner-units.html\">air conditioner unit<\/a> installation services.<\/p>\r\n<h2><span class=\"ez-toc-section\" id=\"What_Factors_Affect_the_AC_Installation_Timeline\"><\/span>What Factors Affect the AC Installation Timeline?<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n<p>There are several variables that influence how long your AC installation will take. On average, a standard central AC installation can take between <strong>4 to 8 hours<\/strong>, but more complex situations may require additional time. Here are the key factors that impact installation time:<\/p>\r\n<h3><span class=\"ez-toc-section\" id=\"Type_of_Air_Conditioning_System\"><\/span>Type of Air Conditioning System<span class=\"ez-toc-section-end\"><\/span><\/h3>\r\n<ul>\r\n<li><strong>Central AC Systems:<\/strong> These typically take one day to install if no major modifications are needed.<\/li>\r\n<li><strong>Ductless Mini-Splits:<\/strong> These can be faster if there are only one or two indoor units, but multi-zone systems may take longer.<\/li>\r\n<li><strong>Heat Pump Systems:<\/strong> May require a longer setup due to dual-function heating and cooling capabilities.<\/li>\r\n<\/ul>\r\n<h3><span class=\"ez-toc-section\" id=\"Home_Layout_and_Accessibility\"><\/span>Home Layout and Accessibility<span class=\"ez-toc-section-end\"><\/span><\/h3>\r\n<p>Tight attic spaces, crawlspaces, or multi-story homes in the St. Louis area can increase installation time. Easy access to installation areas helps speed up the process.<\/p>\r\n<h3><span class=\"ez-toc-section\" id=\"New_Install_vs_Replacement\"><\/span>New Install vs. Replacement<span class=\"ez-toc-section-end\"><\/span><\/h3>\r\n<ul>\r\n<li><strong>New Installations:<\/strong> If ductwork, electrical work, or drainage needs to be added, the process could take 1 to 3 days.<\/li>\r\n<li><strong>Replacements:<\/strong> If the existing infrastructure is in good shape, the work is often completed in a single day.<\/li>\r\n<\/ul>\r\n<h3><span class=\"ez-toc-section\" id=\"Permits_and_Inspections\"><\/span>Permits and Inspections<span class=\"ez-toc-section-end\"><\/span><\/h3>\r\n<p>Depending on local codes in St. Louis, permits and inspections might be required. If so, it may add a day or more to the overall timeline depending on availability.<\/p>\r\n<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-content\/uploads\/how-long-does-it-take-to-install-an-ac-unit-2-300x200.jpg\" alt=\"Step-by-Step Breakdown of a Typical AC Install Process\" width=\"300\" height=\"200\" class=\"alignright size-medium wp-image-17359\" srcset=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-content\/uploads\/how-long-does-it-take-to-install-an-ac-unit-2-300x200.jpg 300w, https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-content\/uploads\/how-long-does-it-take-to-install-an-ac-unit-2.jpg 600w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><h2><span class=\"ez-toc-section\" id=\"Step-by-Step_Breakdown_of_a_Typical_AC_Installation_Process\"><\/span>Step-by-Step Breakdown of a Typical AC Installation Process<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n<h3><span class=\"ez-toc-section\" id=\"Step_1_Pre-Installation_Evaluation_1%E2%80%932_hours\"><\/span>Step 1: Pre-Installation Evaluation (1\u20132 hours)<span class=\"ez-toc-section-end\"><\/span><\/h3>\r\n<p>A technician assesses your existing HVAC system, discusses your cooling needs, and selects the right <a href=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/air-conditioner-size-guide\/\">air conditioner size<\/a> for optimal performance.<\/p>\r\n<h3><span class=\"ez-toc-section\" id=\"Step_2_Equipment_Removal_1%E2%80%932_hours\"><\/span>Step 2: Equipment Removal (1\u20132 hours)<span class=\"ez-toc-section-end\"><\/span><\/h3>\r\n<p>If you&#8217;re replacing an existing system, the old unit and any necessary components will be removed safely.<\/p>\r\n<h3><span class=\"ez-toc-section\" id=\"Step_3_Site_Preparation_1%E2%80%932_hours\"><\/span>Step 3: Site Preparation (1\u20132 hours)<span class=\"ez-toc-section-end\"><\/span><\/h3>\r\n<p>This step includes preparing the ground or platform for outdoor condenser placement, updating electrical or duct connections if needed.<\/p>\r\n<h3><span class=\"ez-toc-section\" id=\"Step_4_New_Unit_Installation_3%E2%80%936_hours\"><\/span>Step 4: New Unit Installation (3\u20136 hours)<span class=\"ez-toc-section-end\"><\/span><\/h3>\r\n<p>The indoor evaporator coil and outdoor condenser unit are installed. Refrigerant lines, electrical connections, and condensate drains are hooked up.<\/p>\r\n<h3><span class=\"ez-toc-section\" id=\"Step_5_Testing_and_Final_Inspection_1%E2%80%932_hours\"><\/span>Step 5: Testing and Final Inspection (1\u20132 hours)<span class=\"ez-toc-section-end\"><\/span><\/h3>\r\n<p>The system is powered up, tested for performance, and adjusted to ensure everything is running efficiently.<\/p>\r\n<h2><span class=\"ez-toc-section\" id=\"Common_Delays_to_Be_Aware_Of\"><\/span>Common Delays to Be Aware Of<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n<ul>\r\n<li><strong>Weather conditions:<\/strong> Heavy rain or extreme heat can slow down outdoor installation tasks.<\/li>\r\n<li><strong>Inadequate ductwork:<\/strong> Duct repairs or modifications may add several hours or days.<\/li>\r\n<li><strong>Electrical upgrades:<\/strong> If your electrical panel needs work, this can delay the process.<\/li>\r\n<li><strong>Unavailable equipment:<\/strong> If a particular AC model or part is out of stock, scheduling may be pushed back.<\/li>\r\n<\/ul>\r\n<hr>\r\n<h2><span class=\"ez-toc-section\" id=\"FAQs_About_AC_Installation_Timelines\"><\/span>FAQs About AC Installation Timelines<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-68e6255bc9fd4\"><strong class=\"schema-faq-question\">Can I stay in my home during installation?<\/strong> <p class=\"schema-faq-answer\">Yes, most installations are not disruptive enough to require leaving your home. However, there may be brief periods when your power is turned off.<\/p><\/div> <div class=\"schema-faq-section\" id=\"faq-question-68e6255bc9fff\"><strong class=\"schema-faq-question\">How can I prepare my home for installation day?<\/strong> <p class=\"schema-faq-answer\">Clear access to work areas, secure pets, and make sure someone is home to grant access and answer questions.<\/p><\/div> <div class=\"schema-faq-section\" id=\"faq-question-68e6255bca013\"><strong class=\"schema-faq-question\">Will installation be faster if I choose a ductless AC?<\/strong> <p class=\"schema-faq-answer\">It can be, especially for single-room installations. Multi-zone ductless systems may still take a full day or more.<\/p><\/div> <\/div>\n\r\n<hr>\r\n<h2><span class=\"ez-toc-section\" id=\"Trust_Galmiche_Sons_for_Expert_AC_Installation_in_St_Louis\"><\/span>Trust Galmiche &amp; Sons for Expert AC Installation in St. Louis<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n<p>With over 70 years of HVAC experience in the St. Louis area, <strong>Galmiche &amp; Sons<\/strong> is your trusted local source for professional AC installation. Our licensed technicians ensure a smooth, timely, and code-compliant installation process, whether you&#8217;re upgrading your system or outfitting a new property.<\/p>\r\n<p>We understand that your time is valuable, and we work hard to meet your schedule while delivering high-quality workmanship you can rely on.<\/p>\r\n<p><strong>Ready to schedule your AC installation or need a quote? <\/strong>Contact Galmiche &amp; Sons today to learn more or request a <a href=\"https:\/\/www.galmicheandsons.com\/quote-request.php\">quote for your new HVAC system<\/a>. We&rsquo;re here to help keep your St. Louis home cool and comfortable all summer long.<\/p>","protected":false},"excerpt":{"rendered":"<p>When you&#8217;re upgrading your air conditioning system or installing one in a new home, one of the most common questions homeowners ask is: how long does it take to install an AC unit? Whether you&#8217;re replacing an old unit or outfitting a new property in the St. Louis area, understanding the time commitment can help you plan ahead and avoid discomfort during the process. So just how long does it take to install an AC unit? Read on to learn &hellip; <a href=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/how-long-does-it-take-to-install-an-ac-unit\/\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">How Long Does It Take to Install an AC Unit?<\/span><\/a><\/p>\n","protected":false},"author":6,"featured_media":17360,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_mbp_gutenberg_autopost":false,"footnotes":""},"categories":[8,13,5,38,17,57],"tags":[],"class_list":["post-17300","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-air-conditioner-replacement","category-air-conditioner-tips","category-air-conditioners","category-heating-cooling-faqs","category-hvac-system","category-hvac-technology"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>How Long Does It Take to Install an AC Unit? | St. Louis HVAC Tips<\/title>\n<meta name=\"description\" content=\"Discover how long it takes to install an AC unit in your home. 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