{"id":1168,"date":"2022-03-23T16:55:00","date_gmt":"2022-03-23T23:55:00","guid":{"rendered":"https:\/\/www.appliancepartspros.com\/b\/?p=1168"},"modified":"2025-07-18T09:53:20","modified_gmt":"2025-07-18T16:53:20","slug":"how-to-install-a-mr-cool-ductless-mini-split-ac-unit-with-video","status":"publish","type":"post","link":"https:\/\/www.appliancepartspros.com\/c\/how-to-install-a-mr-cool-ductless-mini-split-ac-unit-with-video\/","title":{"rendered":"How to install a 3rd generation MRCOOL ductless mini split AC"},"content":{"rendered":"<section class=\"av_textblock_section \"  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock  '   itemprop=\"text\" ><p><span data-sheets-root=\"1\">Tired of sweating through summer and freezing in winter? The MRCOOL DIY ductless mini-split AC unit is your ultimate solution to achieve year-round comfort without the hassle of complicated installations. Dive into our step-by-step guide below, complete with an easy-to-follow video, and transform your living space into a perfectly climate-controlled haven.<\/span><\/p>\n<\/div><\/section>\n<div   class='hr hr-default   avia-builder-el-1  el_after_av_textblock  el_before_av_video '><span class='hr-inner ' ><span class='hr-inner-style'><\/span><\/span><\/div>\n<div  class='avia-video avia-video-16-9   av-lazyload-immediate  av-lazyload-video-embed  '   itemprop=\"video\" itemtype=\"https:\/\/schema.org\/VideoObject\"  data-original_url='https:\/\/www.youtube.com\/watch?v=C1Y3_ZMjl7k' ><script type='text\/html' class='av-video-tmpl'><div class='avia-iframe-wrap'><iframe title=\"Mr  Cool Instructions\" width=\"1500\" height=\"844\" src=\"https:\/\/www.youtube.com\/embed\/C1Y3_ZMjl7k?feature=oembed&autoplay=1&loop=0&controls=1&mute=1\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen><\/iframe><\/div><\/script><div class='av-click-to-play-overlay'><div class=\"avia_playpause_icon\"><\/div><\/div><\/div>\n<div   class='hr hr-default   avia-builder-el-3  el_after_av_video  el_before_av_textblock '><span class='hr-inner ' ><span class='hr-inner-style'><\/span><\/span><\/div>\n<section class=\"av_textblock_section \"  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock  '   itemprop=\"text\" ><p><span style=\"font-weight: 400;\">If you need <\/span><a href=\"https:\/\/www.appliancepartspros.com\/air-conditioner-parts.html\"><b>replacement parts for your MRCOOL mini split or other air conditioner<\/b><\/a><span style=\"font-weight: 400;\">, you can use your model number to find what you\u2019re looking for at <\/span><a href=\"https:\/\/www.appliancepartspros.com\/\"><b>AppliancePartsPros.com<\/b><\/a><b>.<\/b><span style=\"font-weight: 400;\"> We also have thousands of free DIY troubleshooting and repair guides to help you fix your AC yourself.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">[search]<\/span><\/p>\n<h2><\/h2>\n<\/div><\/section>\n<div   class='hr hr-default   avia-builder-el-5  el_after_av_textblock  el_before_av_textblock '><span class='hr-inner ' ><span class='hr-inner-style'><\/span><\/span><\/div>\n<section class=\"av_textblock_section \"  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock  '   itemprop=\"text\" ><p>Looking for an easy way to heat and cool your home? A MRCOOL DIY ductless mini-split AC unit can keep you and your family extra cool this summer with climate control you\u2019ve installed yourself, and you can use it to warm up again once winter rolls around.<\/p>\n<p><span style=\"font-weight: 400;\">Mini split systems have an outdoor compressor unit connected to a slim, wall-mounted indoor unit that you can place high on your wall or ceiling, even if you don\u2019t have any HVAC experience.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The MRCOOL DIY system comes with everything you need to set up, including 25 feet of pre-charged R-410A quick-connect lines so you don\u2019t have to worry about handling refrigerant. You also won\u2019t have to tear down walls or ceilings to install it!<\/span><\/p>\n\n<h2><\/h2>\n<\/div><\/section>\n<div  class='avia-image-container  av-styling-    avia-builder-el-7  el_after_av_textblock  el_before_av_hr  avia-align-center '  itemprop=\"image\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/ImageObject\"  ><div class='avia-image-container-inner'><div class='avia-image-overlay-wrap'><img fetchpriority=\"high\" fetchpriority=\"high\" decoding=\"async\" class='wp-image-1171 avia-img-lazy-loading-not-1171 avia_image' src=\"https:\/\/www.appliancepartspros.com\/c\/wp-content\/uploads\/2022\/03\/Untitled-design5-1-1030x687.png\" alt='' title='Untitled design(5)' height=\"687\" width=\"1030\"  itemprop=\"thumbnailUrl\" srcset=\"https:\/\/www.appliancepartspros.com\/c\/wp-content\/uploads\/2022\/03\/Untitled-design5-1-1030x687.png 1030w, https:\/\/www.appliancepartspros.com\/c\/wp-content\/uploads\/2022\/03\/Untitled-design5-1-300x200.png 300w, https:\/\/www.appliancepartspros.com\/c\/wp-content\/uploads\/2022\/03\/Untitled-design5-1-768x512.png 768w, https:\/\/www.appliancepartspros.com\/c\/wp-content\/uploads\/2022\/03\/Untitled-design5-1-705x470.png 705w, https:\/\/www.appliancepartspros.com\/c\/wp-content\/uploads\/2022\/03\/Untitled-design5-1.png 1500w\" sizes=\"(max-width: 1030px) 100vw, 1030px\" \/><\/div><\/div><\/div>\n<div   class='hr hr-default   avia-builder-el-8  el_after_av_image  el_before_av_textblock '><span class='hr-inner ' ><span class='hr-inner-style'><\/span><\/span><\/div>\n<section class=\"av_textblock_section \"  itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/BlogPosting\" itemprop=\"blogPost\" ><div class='avia_textblock  '   itemprop=\"text\" ><h2><b>Make sure you have the correct 3rd generation MRCOOL unit<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">There are four combination units to choose from when selecting a MRCOOL DIY mini split: 12 BTU, 18 BTU, 24 BTU and 36 BTU. BTU stands for British Thermal Units, which measures the amount of energy the unit uses to provide air conditioning.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">The higher the BTU, the greater the space that can be conditioned. If you need more square feet to be covered by this DIY unit, choose one of the larger options.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">It\u2019s important to choose the right-sized unit for your space so it works correctly and remains energy efficient. If you select a unit that\u2019s too small, the unit may overwork itself and break down faster. If you select a unit that\u2019s too large, the temperature may be uncomfortable and it may waste energy, which could cost you in the long run.<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><a href=\"https:\/\/www.appliancepartspros.com\/mrcool-energy-star-diy-12-hp-115b25-ap7192776.html\"><b>The 12 BTU unit<\/b><\/a> <span style=\"font-weight: 400;\">cools and heats 500 square feet<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><a href=\"https:\/\/www.appliancepartspros.com\/mrcool-energy-star-diy-18-hp-230b25-ap7192779.html\"><b>The 18 BTU unit<\/b><\/a> <span style=\"font-weight: 400;\">can cool and heat 750 square feet<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><a href=\"https:\/\/www.appliancepartspros.com\/mrcool-energy-star-diy-24-hp-230b25-ap7192782.html\"><b>The 24 BTU unit<\/b><\/a><span style=\"font-weight: 400;\"> can cool and heat 1000 square feet<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><a href=\"https:\/\/www.appliancepartspros.com\/mrcool-energy-star-diy-36-hp-230b25-ap7192785.html\"><b>The 36 BTU unit<\/b><\/a> <span style=\"font-weight: 400;\">can cool and heat 1500 square feet<\/span><a href=\"https:\/\/www.appliancepartspros.com\/mrcool-energy-star-diy-36-hp-230b25-ap7192785.html\"><span style=\"font-weight: 400;\">\u00a0<\/span><\/a><\/li>\n<\/ul>\n<p><a href=\"https:\/\/www.appliancepartspros.com\/b\/what-size-mrcool-mini-split-ac-do-you-need\/\"><b>READ MORE: What size MRCOOL mini split AC do you need?<\/b><\/a><\/p>\n<h2><b>Before you install<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">Remember that mini split AC units must be installed in accordance with any local and national requirements and standards. Depending on the electrical work in your space, you may need to hire a certified and trained electrical technician to install your unit.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">While you don\u2019t usually don\u2019t need any specialized tools to install a MRCOOL DIY mini split system, you will need to have some basic technical and electrical skills. If at any point you don\u2019t feel comfortable completing this installation yourself, stop and contact a qualified HVAC professional or an electrician for assistance.<\/span><\/p>\n<p><a href=\"https:\/\/www.appliancepartspros.com\/b\/how-much-power-does-a-mrcool-mini-split-unit-use\/\"><b>READ MORE: How much power does a MRCOOL mini split unit use?<\/b><\/a><\/p>\n<h2><b>What you need<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">Your MRCOOL unit should include almost everything you\u2019ll need to complete the installation. When you unpack everything, double-check what you have against the manual to verify that all the necessary parts are there.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Once you\u2019ve checked the packaged parts, gather up these items:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Stud finder<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Level<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Drill or Phillips head screwdriver<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Utility knife\/knife\/saw<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">3 1\/2-inch hole saw<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">2 adjustable wrenches<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Electrical tape<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Soapy water (either in a spray bottle or with a bowl and brush)<\/span><\/li>\n<\/ul>\n<p><a href=\"https:\/\/www.appliancepartspros.com\/b\/how-long-do-mrcool-mini-splits-last\/\"><b>READ MORE: How long do MRCOOL mini splits last?<\/b><\/a><\/p>\n<h2><b>How to install a 3rd generation MRCOOL DIY ductless mini-split<\/b><\/h2>\n<h3><strong>Step 1: Measure &amp; mark the installation area for the air handler<\/strong><\/h3>\n<p><span style=\"font-weight: 400;\">The MRCOOL unit should include a cardboard wall template to make measuring and marking easy. The drill points for the mounting screws should be located on wall studs. Don\u2019t forget to use a level while you\u2019re marking so that your bracket is installed evenly!<\/span><\/p>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Use a stud finder to find the best spot for the mounting bracket.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Use the wall template to measure and mark both drill points for the mounting hardware.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Use the wall template to mark the spot where the wall hole will be drilled.\u00a0<\/span><\/li>\n<\/ol>\n<h3><strong>Step 2: Install the mounting bracket<\/strong><\/h3>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Find the mounting bracket on the back of the indoor air handler and remove it from the so you can install it on the wall.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Detach the mounting plate with a drill or screwdriver.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Line the plate up with the markings you\u2019ve made on the wall.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">As you secure the mounting plate, use a level set on top of it so the bracket doesn\u2019t slope.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Once the mounting plate is secure, drill a hole through your wall<\/b><span style=\"font-weight: 400;\"> using your 3 1\/2-inch hole saw. You want the mark you made for the hole to be the center point for the saw.<\/span><\/li>\n<\/ol>\n<h3><strong>Step 3: Install the wall sleeve (included with your purchase)<\/strong><\/h3>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Push the wall sleeve through by hand.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Make a note of how far the sleeve sticks out on the outside. It needs to be as close to flush with the exterior wall of your home as possible.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">If needed, use a saw or knife to cut the wall sleeve to size.<\/span><\/li>\n<\/ol>\n<h3><strong>Step 4: Prep and install the air handler<\/strong><\/h3>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Slowly unfold the air handler\u2019s piping until it\u2019s sticking straight out from the back.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Bind the drain hose and refrigerant lines together loosely with electrical tape. <\/span><b>The drain pipe MUST be on the bottom of the bundle. DO NOT bind the ends of the piping since you\u2019ll need to access them later.\u00a0<\/b><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Feed the air handler\u2019s communication wire through the wall sleeve to the outside.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Feed the refrigerant lines and drain hose through the wall sleeve and push all three and the remaining communication wire through all the way.<\/span><\/li>\n<\/ol>\n<h3><strong>Step 5: Connect the air handler to the wall bracket\u00a0<\/strong><\/h3>\n<p><span style=\"font-weight: 400;\">The top of the air handler should hook onto the top of the wall bracket. It will then snap into place at the bottom.<\/span><\/p>\n<h3><strong>Step 6: Set the condenser unit<\/strong><\/h3>\n<p><span style=\"font-weight: 400;\">Outside, place the condenser unit firmly on the ground or attach it to a secure metal bracket or pad.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">It should have a minimum of:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">24 inches (60 cm) of clearance above the unit<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">12 inches (30 cm) of clearance between the back of the unit and the wall if installed on the ground, or 6 inches (15 cm) if mounted on a bracket<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">12 inches (30 cm) of clearance on the left side<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">24 inches (60 cm) of clearance on the right side of the unit, where the valves are<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">79 in (200 cm) of clearance on the vent side (front) of the unit<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">You don\u2019t need a drain pipe under the unit unless it\u2019s elevated. Consult your product manual for more information.<\/span><\/p>\n<h3><strong>Step 7: Install the wall sleeve cover\u00a0<\/strong><\/h3>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Set the wall sleeve cover in place on the outside.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Feed the wire, refrigerant lines and drain hose through the cover.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Pressing the cover into place.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Slowly bend the refrigerant lines so they point downward along the wall.<\/span><\/li>\n<\/ol>\n<h3><strong>Step 8: Add protective neoprene<\/strong><\/h3>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Add the protective neoprene to the inside of the wall sleeve and around the line set. You can use foam spray instead of the wall sleeve to fill any space not taken up by the piping and lines.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Double-check that the air handler is secure.<\/span><\/li>\n<\/ol>\n<h3><strong>Step 9: Prep and connect the line set (included with condenser)<\/strong><\/h3>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Uncoil the lines.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Pull the insulation up on the refrigerant lines that are connected to the air handler to expose the line ends.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Unscrew the color-coded caps on each end.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Thread the line set and the refrigerant line ends together by hand.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Use two wrenches to tighten the lines down completely.\u00a0<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Carefully roll up any excess tubing and place it flat on the ground behind the condenser. Leave yourself with enough slack so the line isn\u2019t stressed later on.<\/span><\/li>\n<\/ol>\n<p><span style=\"font-weight: 400;\">Repeat these steps on the refrigerant line at the condenser to unscrew the caps, thread them together by hand, and tighten it all down with two wrenches.<\/span><\/p>\n<h3><strong>Step 10: Open the valves<\/strong><\/h3>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Remove the top valve cover on the condenser.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Open and shut the valves with the included Allen wrench. <\/span><b>Turn the wrench counterclockwise until it stops and don\u2019t force it past that point.<\/b><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Reinstall the cap and then tighten it securely.<\/span><\/li>\n<\/ol>\n<p><span style=\"font-weight: 400;\">Repeat this step with the bottom valve.<\/span><\/p>\n<h3><strong>Step 11: Check the refrigerant lines for leaks<\/strong><\/h3>\n<p><span style=\"font-weight: 400;\">Use a spray bottle with soapy water to spritz water on the condenser connection points and the air handler\u2019s connection points. If there are leaks, you\u2019ll see the water bubble.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">If you find leaks, tighten the connectors down and check again. Your product manual will also have additional information about checking for and dealing with leaks.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">If the connections near the air handler are leak-free, dry them off and wrap them with the sound-deadening pads. This will protect the connections and reduce vibration.\u00a0<\/span><\/p>\n<h3><strong>Final steps<\/strong><\/h3>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Replace the white insulation around the lines and wrap it up with electrical tape.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Connect the condensate drain hose by twisting it into place.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Turn off all power to the system before performing any electrical work.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">If needed, contact a certified electrician to supply power from a disconnect switch of an appropriate rating. For a detailed explanation of how the electrical work is done for your specific unit, consult the product manual.<\/span><\/li>\n<\/ol>\n<p><span style=\"font-weight: 400;\">Once the electrical work is done and tested, put batteries in your remote control and press power, and your new AC should start working. You can further improve the look of things outside and better protect the cables and piping by installing the optional MRCOOL LineGuard assembly.<\/span><\/p>\n<p><a href=\"https:\/\/www.appliancepartspros.com\/b\/how-to-clean-maintain-a-mrcool-mini-split-ac\/\"><b>READ MORE: How to clean &amp; maintain a MRCOOL mini split AC<\/b><\/a><\/p>\n<h2><b>More information<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">Thank you for reading! We hope this guide helped you install your MRCOOL mini split.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">If you have any other appliance repair needs or projects, don\u2019t hesitate to explore our other troubleshooting guides and videos.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">If you need replacement parts or some extra help with ordering them, grab your model number and head over to <\/span><a href=\"https:\/\/www.appliancepartspros.com\/\"><b>AppliancePartsPros.com<\/b><\/a><span style=\"font-weight: 400;\">, where you can chat with a pro, read our DIY blog and more.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Don\u2019t forget to <\/span><a href=\"https:\/\/www.youtube.com\/@appliancepartspros\/videos\"><b>subscribe to us on YouTube<\/b><\/a><span style=\"font-weight: 400;\"> and follow us on <\/span><a href=\"http:\/\/facebook.com\/appliancepartspros\"><b>Facebook<\/b><\/a><span style=\"font-weight: 400;\">, <\/span><a 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E<\/span>\n\t\t\t\t\t\t<span itemprop='logo' itemscope itemtype='https:\/\/schema.org\/ImageObject'>\n\t\t\t\t\t\t\t<span itemprop='url'><\/span>\n\t\t\t\t\t\t <\/span>\n\t\t\t\t<\/span><span class='av-structured-data'  itemprop=\"author\" itemscope=\"itemscope\" itemtype=\"https:\/\/schema.org\/Person\" ><span itemprop='name'>Steven E<\/span><\/span><span class='av-structured-data'  itemprop=\"datePublished\" datetime=\"2022-03-23T16:55:00-07:00\" >2025-07-02 13:15:20<\/span><span class='av-structured-data'  itemprop=\"dateModified\" itemtype=\"https:\/\/schema.org\/dateModified\" >2025-07-02 13:15:30<\/span><span class='av-structured-data'  itemprop=\"mainEntityOfPage\" itemtype=\"https:\/\/schema.org\/mainEntityOfPage\" ><span itemprop='name'>How to Test and Replace a Central AC Capacitor<\/span><\/span><\/span><\/article><article class='slide-entry flex_column  post-entry post-entry-19651 slide-entry-overview slide-loop-3 slide-parity-odd  post-entry-last  av_one_third  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https:\/\/www.appliancepartspros.com\/c\/wp-content\/uploads\/2025\/07\/20250702_1609_Modern-Home-Thermostat_simple_compose_01jz6c2cj6edkr4a4tgnsbppdy-845x684.png 845w\" sizes=\"(max-width: 495px) 100vw, 495px\" \/><\/a><div class='slide-content'><header class=\"entry-content-header\"><h3 class='slide-entry-title entry-title '  itemprop=\"headline\" ><a href='https:\/\/www.appliancepartspros.com\/c\/how-to-test-and-replace-a-faulty-central-ac-thermostat\/' title='How to Test and Replace a Faulty Central AC Thermostat'>How to Test and Replace a Faulty Central AC Thermostat<\/a><\/h3><span class=\"av-vertical-delimiter\"><\/span><\/header><div class='slide-meta'><div class='slide-meta-comments'><a href='https:\/\/www.appliancepartspros.com\/c\/how-to-test-and-replace-a-faulty-central-ac-thermostat\/#respond'>0 Comments<\/a><\/div><div class='slide-meta-del'>\/<\/div><time class='slide-meta-time updated'  itemprop=\"datePublished\" datetime=\"2025-07-02T13:11:00-07:00\" >July 2, 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Find out how to install your MRCOOL DIY ductless mini-split AC with this guide.<\/p>\n","protected":false},"author":3,"featured_media":1179,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[16,495,2],"tags":[800,1527,1561,1552,259,1553,1570,1571,1559,1558],"class_list":["post-1168","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-air-conditioner","category-guides","category-home-maintenance","tag-air-conditioner","tag-air-conditioning","tag-ductless-air-conditioner","tag-mini-split-air-conditioner","tag-mrcool","tag-mrcool-air-conditioner","tag-mrcool-install","tag-mrcool-installation","tag-mrcool-mini-split","tag-mrcool-mini-split-ac"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>How to install a 3rd generation MRCOOL ductless mini split AC<\/title>\n<meta name=\"description\" content=\"Looking for an easy way to heat and cool your home? 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