{"id":1090,"date":"2020-04-20T11:00:32","date_gmt":"2020-04-20T15:00:32","guid":{"rendered":"https:\/\/www.fulmerheatcool.com\/blog\/?p=1090"},"modified":"2025-11-26T05:34:20","modified_gmt":"2025-11-26T10:34:20","slug":"how-does-your-central-ac-unit-work","status":"publish","type":"post","link":"https:\/\/www.fulmerheatcool.com\/blog\/air-conditioning-service\/how-does-your-central-ac-unit-work\/","title":{"rendered":"How Does Your Central AC Unit Work?"},"content":{"rendered":"<div class=\"wp-block-image\">\n<figure class=\"alignright\"><img loading=\"lazy\" decoding=\"async\" width=\"200\" height=\"300\" src=\"https:\/\/www.fulmerheatcool.com\/blog\/wp-content\/uploads\/2020\/04\/Air_Conditioning_dreamstime_xl_5489881_400x600-200x300.jpg\" alt=\"AC-outdoor-condesnor-unit\" class=\"wp-image-1094\" srcset=\"https:\/\/www.fulmerheatcool.com\/blog\/wp-content\/uploads\/2020\/04\/Air_Conditioning_dreamstime_xl_5489881_400x600-200x300.jpg 200w, https:\/\/www.fulmerheatcool.com\/blog\/wp-content\/uploads\/2020\/04\/Air_Conditioning_dreamstime_xl_5489881_400x600.jpg 400w\" sizes=\"auto, (max-width: 200px) 100vw, 200px\" \/><\/figure><\/div>\n\n\n<p>Have you ever had the experience of having a technician explain a problem they are addressing in your air conditioner only to realize that half of what they are saying isn&#8217;t understandable? This isn&#8217;t meant to confuse you! Professionals know the technical terms for all of the different parts in your  <a href=\"\/\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"HVAC in Columbia, SC (opens in a new tab)\">HVAC in Columbia, SC<\/a> and it isn&#8217;t often that the average customer is going to know all that terminology.<\/p>\n\n\n\n<p>With that said, we want to help. Rather than leaving you to perform a long Google search to understand what in your AC is malfunctioning, we are going to give you a brief overview of how your AC works so that the next time one of our techs visit you feel a little less out of your depth! <a href=\"https:\/\/www.fulmerheatcool.com\/blog\/air-conditioning-service\/its-not-too-early-to-consider-ac-maintenance\/\">Understanding your AC system early<\/a> can also help you avoid bigger problems later.<\/p>\n\n\n\n<!--more-->\n\n\n\n<h2 class=\"wp-block-heading\">Key Components of a Central AC System Explained <\/h2>\n\n\n\n<p>We want to give you a brief crash course on how your air conditioner works so you can better understand what is up with it the next time it is struggling. To do that we have a small step-by-step guide:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Step 1: Turning your system on<\/h3>\n\n\n\n<p>When you need to cool your home off, you are going to start with your thermostat. Whether the thermostat is set to turn on by itself when a certain temperature is reached, or you turn it on manually, the thermostat is vital to the cooling process. Once your thermostat gets the signal to &#8220;start,&#8221; it tells your AC system to begin the cooling process.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Step 2: The cooling process<\/h3>\n\n\n\n<p>Once your air conditioner receives the signal to start the cooling process, it begins to pressurize and cycle the refrigerant in its system. When refrigerant cycles through your evaporator coil, a large coil within your indoor AC unit, it absorbs the heat from the air being blown over the coil. This causes the refrigerant to evaporate into a gas and cools the air around the coil. <\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Step 3: Receiving the cool air<\/h3>\n\n\n\n<p>Once your AC is able to create cool air, the blower fan in your system is going to blow that temperature-controlled air out of the system, through your ductwork and into the different areas of your home. This will happen consistently until your home reaches the desired temperature.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Step 4: The cycle continues<\/h3>\n\n\n\n<p>After the refrigerant in the evaporator coil absorbs the heat from the air in your home, it is cycled out to your outdoor unit through a condenser coil that condenses the refrigerant. This increases the temperature of the refrigerant so that when a fan in your outdoor unit blows air across the coil, the refrigerant is able to release the excess heat and return to a liquid state. Once this is done, the hot air escapes outside and the refrigerant continues to repeat the cooling process until your home is comfortable. If any part of this cycle seems off, especially near the end of summer, it may be due to <a href=\"https:\/\/www.fulmerheatcool.com\/blog\/air-conditioning-service\/common-end-of-season-ac-problems-and-what-you-can-do-about-them\/\">common late-season AC problems<\/a>.<\/p>\n\n\n\n<p>Hopefully, this little step-by-step guide has helped to clarify a bit about how your AC works so the next time your technician mentions a term like &#8220;evaporator coil&#8221; or &#8220;condenser&#8221; you have a better grasp on what is up with your system.<\/p>\n\n\n\n<p>At the end of the day though, you should be able to trust that your technician knows what they are doing when they provide service for your HVAC system. But if you start hearing <a href=\"https:\/\/www.fulmerheatcool.com\/blog\/air-conditioning-service\/5-noises-an-ac-should-never-ever-make\/\">strange and disruptive AC noises<\/a>, don\u2019t ignore them\u2014they\u2019re often your system\u2019s way of signaling trouble.<\/p>\n\n\n\n<p class=\"has-text-align-center\"><strong><a rel=\"noreferrer noopener\" aria-label=\"Contact Fulmer Heating &amp; Cooling (opens in a new tab)\" href=\"\/contact\/send-message\" target=\"_blank\">Contact Fulmer Heating &amp; Cooling<\/a> for reliable HVAC services throughout Newberry and the surrounding communities.<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>We want to give you a course on how your air conditioner works so you can better understand what is up with your system the next time it is struggling.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[70],"tags":[13,87,48],"class_list":["post-1090","post","type-post","status-publish","format-standard","hentry","category-air-conditioning-service","tag-air-conditioning","tag-columbia","tag-hvac"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.fulmerheatcool.com\/blog\/wp-json\/wp\/v2\/posts\/1090","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.fulmerheatcool.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.fulmerheatcool.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.fulmerheatcool.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.fulmerheatcool.com\/blog\/wp-json\/wp\/v2\/comments?post=1090"}],"version-history":[{"count":6,"href":"https:\/\/www.fulmerheatcool.com\/blog\/wp-json\/wp\/v2\/posts\/1090\/revisions"}],"predecessor-version":[{"id":2302,"href":"https:\/\/www.fulmerheatcool.com\/blog\/wp-json\/wp\/v2\/posts\/1090\/revisions\/2302"}],"wp:attachment":[{"href":"https:\/\/www.fulmerheatcool.com\/blog\/wp-json\/wp\/v2\/media?parent=1090"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.fulmerheatcool.com\/blog\/wp-json\/wp\/v2\/categories?post=1090"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.fulmerheatcool.com\/blog\/wp-json\/wp\/v2\/tags?post=1090"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}