{"id":20923,"date":"2022-08-23T13:16:47","date_gmt":"2022-08-23T13:16:47","guid":{"rendered":"https:\/\/thetibble.com\/?p=20923"},"modified":"2023-08-03T21:52:19","modified_gmt":"2023-08-03T21:52:19","slug":"dishwasher-air-gap-what-why","status":"publish","type":"post","link":"https:\/\/thetibble.com\/dishwasher-air-gap-what-why\/","title":{"rendered":"Dishwasher Air Gap | What Is It and Why Is It Used?"},"content":{"rendered":"<style>img#mv-trellis-img-1::before{padding-top:25%; }img#mv-trellis-img-1{display:block;}img#mv-trellis-img-2::before{padding-top:72.9%; }img#mv-trellis-img-2{display:block;}img#mv-trellis-img-3::before{padding-top:72.9%; }img#mv-trellis-img-3{display:block;}img#mv-trellis-img-4::before{padding-top:72.9%; }img#mv-trellis-img-4{display:block;}<\/style>\n<p>Dishwashers need water to function, which means that they feature plumbing connections. Like every other plumbing connection, dishwasher connections are at risk of experiencing plumbing-related problems.&nbsp;<\/p>\n\n\n\n<p>One such problem is backflow, and the only way to avoid this is by putting preventive measures in place. Dishwasher air gaps function as protective devices, and in this article, I explain how they work and why it is important to have one installed. <\/p>\n\n\n<div class=\"lazyblock-nutshell-Z22CT1U wp-block-lazyblock-nutshell\"><p class=\"has-text-align-left has-text-color has-background\" style=\"background-color:#e7d1b1;color:#575f60;font-size:18px\"><noscript><img loading=\"lazy\" decoding=\"async\" width=\"200\" height=\"50\" class=\"wp-image-3497\" style=\"width: 200px;\" src=\"https:\/\/thetibble.com\/wp-content\/uploads\/2021\/08\/nutshell1-11.png\" alt=\"\" srcset=\"https:\/\/thetibble.com\/wp-content\/uploads\/2021\/08\/nutshell1-11.png 600w, https:\/\/thetibble.com\/wp-content\/uploads\/2021\/08\/nutshell1-11-300x75.png 300w\" sizes=\"(max-width: 200px) 100vw, 200px\"><\/noscript><img loading=\"eager\" decoding=\"async\" width=\"200\" height=\"50\" class=\"wp-image-3497 eager-load\" style=\"width: 200px;\" src=\"data:image\/svg+xml,%3Csvg%20xmlns='http:\/\/www.w3.org\/2000\/svg'%20viewBox='0%200%20200%2050'%3E%3Crect%20width='200'%20height='50'%20style='fill:%23e3e3e3'\/%3E%3C\/svg%3E\" alt=\"\" sizes=\"(max-width: 200px) 100vw, 200px\" data-pin-media=\"https:\/\/thetibble.com\/wp-content\/uploads\/2021\/08\/nutshell1-11.png\" id=\"mv-trellis-img-1\" data-src=\"https:\/\/thetibble.com\/wp-content\/uploads\/2021\/08\/nutshell1-11.png.webp\" data-srcset=\"https:\/\/thetibble.com\/wp-content\/uploads\/2021\/08\/nutshell1-11.png.webp 600w, https:\/\/thetibble.com\/wp-content\/uploads\/2021\/08\/nutshell1-11-300x75.png.webp 300w\" data-svg=\"1\" data-trellis-processed=\"1\"><br><strong>Dishwasher air gaps are Y-shaped tubes. The inlet and outlet branches are separated by a break in the piping (the air gap). They are used to stop the backward flow of water, either from the drain into the dishwasher or from the dishwasher into the supply line.<\/strong> <\/p><\/div>\n\n\n<h2 class=\"wp-block-heading\">What Is a Dishwasher Air Gap?<\/h2>\n\n\n\n<p>Dishwashers are sometimes connected directly to the kitchen drain. With such a setup, if the pipe backs up, the dirty water can easily flow back into the dishwasher, leaving you at risk of unwittingly washing your dishes with unsanitary water.&nbsp;<\/p>\n\n\n\n<p>A dishwasher air gap is a cylinder-shaped fitting that is mounted about two inches above the kitchen sink, near the faucet. The actual connection takes place underneath the sink.&nbsp;<\/p>\n\n\n\n<p class=\"has-text-align-center\">\n    <a data-amazonimages=\"\" target=\"_blank\" title=\"Kraus KAG-1SFS Dishwasher Air Gap, Spot Free Stainless Steel\" href=\"https:\/\/www.amazon.com\/dp\/B08DG6YS42?tag=hvacbuzz-20\" rel=\"nofollow noopener\"><noscript><img decoding=\"async\" class=\"size-large aligncenter\" src=\"https:\/\/m.media-amazon.com\/images\/I\/41EEAF08TsL._SL500_.jpg\" alt=\"Kraus KAG-1SFS Dishwasher Air Gap, Spot Free Stainless Steel\" title=\"Kraus KAG-1SFS Dishwasher Air Gap, Spot Free Stainless Steel\"><\/noscript><img decoding=\"async\" class=\"size-large aligncenter lazyload\" src=\"https:\/\/m.media-amazon.com\/images\/I\/41EEAF08TsL._SL500_.jpg\" alt=\"Kraus KAG-1SFS Dishwasher Air Gap, Spot Free Stainless Steel\" title=\"Kraus KAG-1SFS Dishwasher Air Gap, Spot Free Stainless Steel\" data-mvt-skip=\"src\" loading=\"lazy\" data-trellis-processed=\"1\"><\/a>\n<\/p>\n\n\n\n<p>It has a decorative cap that is attached to a y-shaped fitting with two branches (an inlet and outlet branch).&nbsp;<\/p>\n\n\n\n<p>Air gaps act as anti-backflow devices. They function by separating the dishwasher drain hose from the disposal drain so that in case of backflow, contaminated water does not re-enter the dishwasher.&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Explaining Backflow<\/h2>\n\n\n\n<p>Backflow refers to the unwanted reversal in the direction of water flow. It occurs when water flows in the opposite direction from where it is supposed to go.&nbsp;<\/p>\n\n\n\n<p>Any plumbing connection that moves water from one location to another is at risk of backing up. So, it isn&rsquo;t something that is particular to dishwashers or kitchen sinks.&nbsp;<\/p>\n\n\n\n<p>There are two types of backflow.&nbsp;<\/p>\n\n\n\n<ul>\n<li>Back-siphonage: This type of backflow is caused by negative pressure in the supply piping. Negative pressure is created when the water pressure on the supply end stops or reduces. This negative pressure then pulls the drained water back up. Back-siphonage typically occurs in sinks and toilets.<\/li>\n\n\n\n<li>Back pressure: This occurs when a sudden increase in pressure forces water to flow in the opposite direction.&nbsp;<\/li>\n<\/ul>\n\n\n\n<p>In dishwashers, backflows are usually caused by a clogged kitchen drain, drain hose that&rsquo;s looped too low, a blocked sewer line, and an improperly installed or clogged garbage disposal.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">How Does a Dishwasher Air Gap Work?<\/h2>\n\n\n\n<p><strong><em><a href=\"https:\/\/www.amazon.com\/dp\/B007CW1BBQ?tag=hvacbuzz-20?\" target=\"_blank\" rel=\"noreferrer noopener\">Dishwasher air gaps<\/a><\/em><\/strong> <em><sub><sup>(amazon link)<\/sup><\/sub><\/em> are one of the most effective ways of protecting your dishwasher against backflow.&nbsp;<\/p>\n\n\n\n<p>An air gap consists of two branches separated by a break in the piping. The inlet branch rises from the dishwasher drain up to the air gap external fixture and curves over. The second branch, the outlet branch, which is usually the bigger of the two branches, continues the piping system after the break.<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><noscript><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"729\" src=\"https:\/\/thetibble.com\/wp-content\/uploads\/2023\/01\/Air-gap-in-the-dishwasher-kitchen-sink-and-dishwasher.jpg\" alt=\"Air gap in the dishwasher, kitchen sink and dishwasher\" class=\"wp-image-28539\" srcset=\"https:\/\/thetibble.com\/wp-content\/uploads\/2023\/01\/Air-gap-in-the-dishwasher-kitchen-sink-and-dishwasher.jpg 1000w, https:\/\/thetibble.com\/wp-content\/uploads\/2023\/01\/Air-gap-in-the-dishwasher-kitchen-sink-and-dishwasher-300x219.jpg 300w, https:\/\/thetibble.com\/wp-content\/uploads\/2023\/01\/Air-gap-in-the-dishwasher-kitchen-sink-and-dishwasher-768x560.jpg 768w, https:\/\/thetibble.com\/wp-content\/uploads\/2023\/01\/Air-gap-in-the-dishwasher-kitchen-sink-and-dishwasher-960x700.jpg 960w\" sizes=\"(max-width: 760px) calc(100vw - 24px), 720px\"><\/noscript><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"729\" src=\"https:\/\/thetibble.com\/wp-content\/uploads\/2023\/01\/Air-gap-in-the-dishwasher-kitchen-sink-and-dishwasher.jpg.webp\" alt=\"Air gap in the dishwasher, kitchen sink and dishwasher\" class=\"wp-image-28539 lazyload\" srcset=\"https:\/\/thetibble.com\/wp-content\/uploads\/2023\/01\/Air-gap-in-the-dishwasher-kitchen-sink-and-dishwasher.jpg.webp 1000w, https:\/\/thetibble.com\/wp-content\/uploads\/2023\/01\/Air-gap-in-the-dishwasher-kitchen-sink-and-dishwasher-300x219.jpg.webp 300w, https:\/\/thetibble.com\/wp-content\/uploads\/2023\/01\/Air-gap-in-the-dishwasher-kitchen-sink-and-dishwasher-768x560.jpg.webp 768w, https:\/\/thetibble.com\/wp-content\/uploads\/2023\/01\/Air-gap-in-the-dishwasher-kitchen-sink-and-dishwasher-960x700.jpg.webp 960w\" sizes=\"(max-width: 760px) calc(100vw - 24px), 720px\" data-pin-media=\"https:\/\/thetibble.com\/wp-content\/uploads\/2023\/01\/Air-gap-in-the-dishwasher-kitchen-sink-and-dishwasher.jpg\" id=\"mv-trellis-img-2\" data-trellis-processed=\"1\"><\/figure>\n\n\n\n<p>Water leaving the dishwasher ascends through the inlet pipe. Pressure moves it up the pipe. Then, after it loops over, gravity takes it past the air gap and into the outlet pipe into the drain. <\/p>\n\n\n\n<p>Backflow is the result of pressure, which causes the drained water to rise up the outlet pipe again. However, because the inlet pipe is looped over the outlet pipe, gravity cannot take it into the inlet branch. And because of the air gap, pressure cannot take it into the inlet branch. <\/p>\n\n\n\n<p>Instead, the backflow escapes through the air gap and spills into the kitchen sink through the metal covering. <\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Are Air Gaps Required By Code?<\/h2>\n\n\n\n<p>The International Residential Code (IRC) doesn&rsquo;t discuss backflow prevention in dishwasher discharge channels. However, in <a rel=\"noreferrer noopener\" href=\"https:\/\/codes.iccsafe.org\/content\/IRC2021P1\/chapter-27-plumbing-fixtures#IRC2021P1_Pt07_Ch27_SecP2717\" target=\"_blank\">Section P2717<\/a>, the IRC stipulates that the <em>water supply<\/em> to the dishwasher must be protected against backflow by a built-in air gap or any other approved backflow preventer.&nbsp;<\/p>\n\n\n\n<p>In this application, the air gap is used to protect the potable water from contamination.&nbsp;In other words, it stops water in the dishwasher from flowing up into the supply line. <\/p>\n\n\n\n<p>Backflow preventers are also used in the dishwasher&rsquo;s discharge channel to prevent wastewater from backing up into the dishwasher, but this one is not required by the IRC. What is required here is the normal drainage trap (air gaps are usually installed in addition to these as opposed to instead of them). <\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Air Gaps Are Required By Code in Some States<\/h3>\n\n\n\n<p>Although there are alternative methods of preventing wastewater from flowing back into a dishwasher, air gaps are the safest and most effective method of going about it.&nbsp;<\/p>\n\n\n\n<p>This is why some states in the US have made drainage hose air gaps a code requirement for dishwasher installation. This means that even if there is an alternative form of backflow prevention in place, the installation would be considered &ldquo;not up to code&rdquo; as long as an air gap isn&rsquo;t used.&nbsp;<\/p>\n\n\n\n<p>Examples of states with this stipulation include Minnesota, Washington, <a href=\"https:\/\/thetibble.com\/dishwasher-air-gap-required-california\/\">California<\/a>, and Hawaii.&nbsp;<\/p>\n\n\n\n<p>If using a dishwasher air gap isn&rsquo;t compulsory in your locality, you can use alternative backflow prevention methods like a high loop or check valve.&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><noscript><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"729\" src=\"https:\/\/thetibble.com\/wp-content\/uploads\/2022\/08\/High-loop-of-dishwasher-drain-line-illustration.jpg\" alt=\"High loop of dishwasher drain line illustration\" class=\"wp-image-21855\" srcset=\"https:\/\/thetibble.com\/wp-content\/uploads\/2022\/08\/High-loop-of-dishwasher-drain-line-illustration.jpg 1000w, https:\/\/thetibble.com\/wp-content\/uploads\/2022\/08\/High-loop-of-dishwasher-drain-line-illustration-300x219.jpg 300w, https:\/\/thetibble.com\/wp-content\/uploads\/2022\/08\/High-loop-of-dishwasher-drain-line-illustration-768x560.jpg 768w, https:\/\/thetibble.com\/wp-content\/uploads\/2022\/08\/High-loop-of-dishwasher-drain-line-illustration-735x536.jpg 735w, https:\/\/thetibble.com\/wp-content\/uploads\/2022\/08\/High-loop-of-dishwasher-drain-line-illustration-335x244.jpg 335w, https:\/\/thetibble.com\/wp-content\/uploads\/2022\/08\/High-loop-of-dishwasher-drain-line-illustration-347x253.jpg 347w, https:\/\/thetibble.com\/wp-content\/uploads\/2022\/08\/High-loop-of-dishwasher-drain-line-illustration-520x379.jpg 520w, https:\/\/thetibble.com\/wp-content\/uploads\/2022\/08\/High-loop-of-dishwasher-drain-line-illustration-640x467.jpg 640w, https:\/\/thetibble.com\/wp-content\/uploads\/2022\/08\/High-loop-of-dishwasher-drain-line-illustration-960x700.jpg 960w\" sizes=\"(max-width: 760px) calc(100vw - 24px), 720px\"><\/noscript><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"729\" src=\"https:\/\/thetibble.com\/wp-content\/uploads\/2022\/08\/High-loop-of-dishwasher-drain-line-illustration.jpg.webp\" alt=\"High loop of dishwasher drain line illustration\" class=\"wp-image-21855 lazyload\" srcset=\"https:\/\/thetibble.com\/wp-content\/uploads\/2022\/08\/High-loop-of-dishwasher-drain-line-illustration.jpg.webp 1000w, https:\/\/thetibble.com\/wp-content\/uploads\/2022\/08\/High-loop-of-dishwasher-drain-line-illustration-300x219.jpg.webp 300w, https:\/\/thetibble.com\/wp-content\/uploads\/2022\/08\/High-loop-of-dishwasher-drain-line-illustration-768x560.jpg.webp 768w, https:\/\/thetibble.com\/wp-content\/uploads\/2022\/08\/High-loop-of-dishwasher-drain-line-illustration-735x536.jpg.webp 735w, https:\/\/thetibble.com\/wp-content\/uploads\/2022\/08\/High-loop-of-dishwasher-drain-line-illustration-335x244.jpg.webp 335w, https:\/\/thetibble.com\/wp-content\/uploads\/2022\/08\/High-loop-of-dishwasher-drain-line-illustration-347x253.jpg.webp 347w, https:\/\/thetibble.com\/wp-content\/uploads\/2022\/08\/High-loop-of-dishwasher-drain-line-illustration-520x379.jpg.webp 520w, https:\/\/thetibble.com\/wp-content\/uploads\/2022\/08\/High-loop-of-dishwasher-drain-line-illustration-640x467.jpg.webp 640w, https:\/\/thetibble.com\/wp-content\/uploads\/2022\/08\/High-loop-of-dishwasher-drain-line-illustration-960x700.jpg.webp 960w\" sizes=\"(max-width: 760px) calc(100vw - 24px), 720px\" data-pin-media=\"https:\/\/thetibble.com\/wp-content\/uploads\/2022\/08\/High-loop-of-dishwasher-drain-line-illustration.jpg\" id=\"mv-trellis-img-3\" data-trellis-processed=\"1\"><\/figure>\n\n\n\n<p>If you aren&rsquo;t sure of the code requirements in your location, consult a licensed professional or check your local plumbing code before installing your dishwasher.&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Potential Problems Associated with No Air Gap<\/h2>\n\n\n\n<p>The absence of an air gap or any other form of backflow prevention means that you are leaving your dishwasher vulnerable to wastewater backups.&nbsp;<\/p>\n\n\n\n<p>Although dishwashers have traps that are supposed to help stop backflow, they can fail if they dry out. <\/p>\n\n\n\n<p>The presence of wastewater in the dishwasher poses a health hazard. It can breed bacteria that can cause health challenges like gastrointestinal issues.&nbsp;<\/p>\n\n\n\n<p>If left unattended, standing wastewater can lead to the growth of mold and mildew. It would also cause the dishwasher to give off an offensive odor.&nbsp;<\/p>\n\n\n\n<p>Additionally, the presence of standing water would make the dishwasher take longer to wash dishes. Running the dishwasher for longer means that you would be consuming more energy than you should.&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-pullquote\"><blockquote><p><a href=\"https:\/\/thetibble.com\/common-dishwasher-smells-why-dangerous\/\">Common Dishwasher Smells (Why These Are Dangerous)<\/a><\/p><\/blockquote><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Installing an Air Gap<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Cost<\/h3>\n\n\n\n<p>The decorative covers of dishwasher air gaps are available in a variety of finishes to suit the design of your faucet and sink.&nbsp;<\/p>\n\n\n\n<p>On average, an air gap costs between $10 and $30. The actual price would depend on the brand and the material used for the decorative cap.&nbsp;<\/p>\n\n\n\n<p>If you decide to hire a professional, you would have to spend an extra $30-$70 for the labor.&nbsp;<\/p>\n\n\n\n<p>The exact amount you spend if you&rsquo;re installing the air gap yourself would depend on the availability of the required tools.&nbsp;<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">DIY or Hired Professional?<\/h3>\n\n\n\n<p>If you are installing the dishwasher from scratch, then you would most likely need the help of a professional.&nbsp;<\/p>\n\n\n\n<figure class=\"wp-block-image size-full\"><noscript><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"729\" src=\"https:\/\/thetibble.com\/wp-content\/uploads\/2022\/08\/Professional-man-installing-a-dishwasher.jpg\" alt=\"Professional man installing a dishwasher and holding a red portable drill\" class=\"wp-image-21856\" srcset=\"https:\/\/thetibble.com\/wp-content\/uploads\/2022\/08\/Professional-man-installing-a-dishwasher.jpg 1000w, https:\/\/thetibble.com\/wp-content\/uploads\/2022\/08\/Professional-man-installing-a-dishwasher-300x219.jpg 300w, https:\/\/thetibble.com\/wp-content\/uploads\/2022\/08\/Professional-man-installing-a-dishwasher-768x560.jpg 768w, https:\/\/thetibble.com\/wp-content\/uploads\/2022\/08\/Professional-man-installing-a-dishwasher-735x536.jpg 735w, https:\/\/thetibble.com\/wp-content\/uploads\/2022\/08\/Professional-man-installing-a-dishwasher-335x244.jpg 335w, https:\/\/thetibble.com\/wp-content\/uploads\/2022\/08\/Professional-man-installing-a-dishwasher-347x253.jpg 347w, https:\/\/thetibble.com\/wp-content\/uploads\/2022\/08\/Professional-man-installing-a-dishwasher-520x379.jpg 520w, https:\/\/thetibble.com\/wp-content\/uploads\/2022\/08\/Professional-man-installing-a-dishwasher-640x467.jpg 640w, https:\/\/thetibble.com\/wp-content\/uploads\/2022\/08\/Professional-man-installing-a-dishwasher-960x700.jpg 960w\" sizes=\"(max-width: 760px) calc(100vw - 24px), 720px\"><\/noscript><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"729\" src=\"https:\/\/thetibble.com\/wp-content\/uploads\/2022\/08\/Professional-man-installing-a-dishwasher.jpg.webp\" alt=\"Professional man installing a dishwasher and holding a red portable drill\" class=\"wp-image-21856 lazyload\" srcset=\"https:\/\/thetibble.com\/wp-content\/uploads\/2022\/08\/Professional-man-installing-a-dishwasher.jpg.webp 1000w, https:\/\/thetibble.com\/wp-content\/uploads\/2022\/08\/Professional-man-installing-a-dishwasher-300x219.jpg.webp 300w, https:\/\/thetibble.com\/wp-content\/uploads\/2022\/08\/Professional-man-installing-a-dishwasher-768x560.jpg.webp 768w, https:\/\/thetibble.com\/wp-content\/uploads\/2022\/08\/Professional-man-installing-a-dishwasher-735x536.jpg.webp 735w, https:\/\/thetibble.com\/wp-content\/uploads\/2022\/08\/Professional-man-installing-a-dishwasher-335x244.jpg.webp 335w, https:\/\/thetibble.com\/wp-content\/uploads\/2022\/08\/Professional-man-installing-a-dishwasher-347x253.jpg.webp 347w, https:\/\/thetibble.com\/wp-content\/uploads\/2022\/08\/Professional-man-installing-a-dishwasher-520x379.jpg.webp 520w, https:\/\/thetibble.com\/wp-content\/uploads\/2022\/08\/Professional-man-installing-a-dishwasher-640x467.jpg.webp 640w, https:\/\/thetibble.com\/wp-content\/uploads\/2022\/08\/Professional-man-installing-a-dishwasher-960x700.jpg.webp 960w\" sizes=\"(max-width: 760px) calc(100vw - 24px), 720px\" data-pin-media=\"https:\/\/thetibble.com\/wp-content\/uploads\/2022\/08\/Professional-man-installing-a-dishwasher.jpg\" id=\"mv-trellis-img-4\" data-trellis-processed=\"1\"><\/figure>\n\n\n\n<p>However, adding an air gap to a dishwasher is a pretty easy DIY project.&nbsp;<\/p>\n\n\n\n<p>You&rsquo;d be working with pipes. So, if this isn&rsquo;t something you&rsquo;d like to do, you can hire a professional to help you with the installation.&nbsp;<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>What You Need<\/strong><\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table><tbody><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>Item<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\"><strong>Amazon link<\/strong><\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">Dishwasher air gap kit<\/td><td class=\"has-text-align-center\" data-align=\"center\"><a href=\"https:\/\/www.amazon.com\/dp\/B007CW1BBQ?tag=hvacbuzz-20?\" target=\"_blank\" rel=\"noreferrer noopener\">View<\/a><\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">Flathead screwdriver<\/td><td class=\"has-text-align-center\" data-align=\"center\"><a href=\"https:\/\/www.amazon.com\/dp\/B08D8NSBHR?tag=hvacbuzz-20?\" target=\"_blank\" rel=\"noreferrer noopener\">View<\/a><\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">Hose clamps<\/td><td class=\"has-text-align-center\" data-align=\"center\"><a href=\"https:\/\/www.amazon.com\/dp\/B08HJK3G92?tag=hvacbuzz-20?\" target=\"_blank\" rel=\"noreferrer noopener\">View<\/a><\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">Utility knife<\/td><td class=\"has-text-align-center\" data-align=\"center\"><a href=\"https:\/\/www.amazon.com\/dp\/B08NX1XYBN?tag=hvacbuzz-20?\" target=\"_blank\" rel=\"noreferrer noopener\">View<\/a><\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">Cordless drill<\/td><td class=\"has-text-align-center\" data-align=\"center\"><a href=\"https:\/\/www.amazon.com\/dp\/B006V6YAPI?tag=hvacbuzz-20?\" target=\"_blank\" rel=\"noreferrer noopener\">View<\/a><\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">1 1\/4&Prime; hole saw<\/td><td class=\"has-text-align-center\" data-align=\"center\"><a href=\"https:\/\/www.amazon.com\/dp\/B0052EC44Y?tag=hvacbuzz-20?\" target=\"_blank\" rel=\"noreferrer noopener\">View<\/a><\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">Chanel-type pliers<\/td><td class=\"has-text-align-center\" data-align=\"center\"><a href=\"https:\/\/www.amazon.com\/dp\/B07QN1PYYM?tag=hvacbuzz-20?\" target=\"_blank\" rel=\"noreferrer noopener\">View<\/a><\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">7\/8&rdquo; inside diameter drain hose<\/td><td class=\"has-text-align-center\" data-align=\"center\"><a href=\"https:\/\/www.amazon.com\/dp\/B000UVR5FM?tag=hvacbuzz-20?\" target=\"_blank\" rel=\"noreferrer noopener\">View<\/a><\/td><\/tr><tr><td class=\"has-text-align-center\" data-align=\"center\">Masking tape&nbsp;<\/td><td class=\"has-text-align-center\" data-align=\"center\"><a href=\"https:\/\/www.amazon.com\/dp\/B08FJGRFC3?tag=hvacbuzz-20?\" target=\"_blank\" rel=\"noreferrer noopener\">View<\/a><\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Method<\/h3>\n\n\n\n<p>To install an air gap, you have to first drill a hole through the sink if you do not have one already. Then the device is installed from underneath the sink so that the top rests <a href=\"https:\/\/thetibble.com\/gap-between-dishwasher-and-countertop\/\">on the counter<\/a> and underneath the sink, the inlet and outlet branches are connected to the dishwasher and garbage disposal, respectively.&nbsp;<\/p>\n\n\n\n<p>Here is a video to guide you through the process of installing your air gap. <\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe loading=\"lazy\" title=\"Do I Need A Dishwasher Air Gap?...My States Plumbing Code says YES!!\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/PwlGaO_x6ik?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<h4 class=\"wp-block-heading\">Tips<\/h4>\n\n\n\n<ul>\n<li>A common mistake people make is to install the rubber gasket underneath the sink. The gasket helps to prevent water leaks, so it&rsquo;s best to install it on the sink.&nbsp;&nbsp;<\/li>\n\n\n\n<li>If the hose is too long, cut it to match the distance between the dishwasher\/drain and the air gap.&nbsp;<\/li>\n\n\n\n<li>Ensure that there are no twists or kinks in the hose so that water can flow freely through it.&nbsp;<\/li>\n\n\n\n<li>The hole should be cut in the sink, preferably next to the faucet.&nbsp;<\/li>\n\n\n\n<li>If you have an <a href=\"https:\/\/thetibble.com\/gap-undermount-sink-countertop\/\">undermount sink<\/a>, you will have to drill the hole in the countertop. This step might require professional assistance, especially if you have a quartz or stone countertop.&nbsp;<\/li>\n\n\n\n<li>After installing the air gap, run the dishwasher on a full cycle and check the tubing connections for signs of leaking.&nbsp;<\/li>\n\n\n\n<li>Follow the instruction on the packaging for directions on where each component should go.&nbsp;<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Water Coming out of Air Gap: What Does It Mean?<\/h2>\n\n\n\n<p>The most common cause of water coming out of an air gap is an obstruction in the flow of water from the air gap to the garbage disposal.&nbsp;While it means there is something wrong with your plumbing, it also means that your air gap is working! <\/p>\n\n\n\n<p>Obstructions can be caused by the following:<\/p>\n\n\n\n<ul>\n<li><strong>Kinks in the discharge hose<\/strong>: The presence of kinks in the discharge pipe would limit the flow of water and can even cause debris and food to settle and eventually clog the pipe.&nbsp;<\/li>\n<\/ul>\n\n\n\n<ul>\n<li><strong>Clogs<\/strong>: Debris and food particle can get stuck in the tubing or drain pipe and prevent water from flowing freely into the drain. Air gap water leaks are mostly caused by clogs in the drain hose carrying water from the air gap to the garbage disposal. It can also be caused by clogs in the air gap tubing.&nbsp;<\/li>\n<\/ul>\n\n\n\n<ul>\n<li><strong>Knockout plug in new garbage disposals<\/strong>. New garbage disposals feature a plug at the dishwasher outlet that you have to remove before attaching the hose. If the knockout plug isn&rsquo;t removed, water would be unable to flow into the garbage disposal and would be forced to drain out the top of the air gap.&nbsp;<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">How to Stop It<\/h3>\n\n\n\n<p>Kinks are pretty easy to detect. So, inspect the discharge hose and if you notice any kink, detach the pipe from either the air gap or garbage disposal and carefully reinstall it so that there are no kinks in the pipe.&nbsp;<\/p>\n\n\n\n<p>Here is a guide on how to get rid of clogs:<\/p>\n\n\n\n<ol>\n<li>Remove the decorative cover and plastic cap of the air gap.<\/li>\n\n\n\n<li>Once you&rsquo;ve removed the cap, you should be able to access the insides of the tubing. The issue might be caused by food particles stuck at the top of the air gap and all you need to do is to remove them.&nbsp;<\/li>\n\n\n\n<li>To remove air gap clogs, get a roll of paper towels, slide it over the air gap and blow really hard into the paper roll.&nbsp;<\/li>\n\n\n\n<li>If that doesn&rsquo;t work or if it is caused by a clog in the discharge pipe you would need a cleaning tool to remove it. You could use an <strong><em><a rel=\"noreferrer noopener\" href=\"https:\/\/www.amazon.com\/gp\/slredirect\/picassoRedirect.html\/ref=pa_sp_atf_aps_sr_pg1_1?ie=UTF8&amp;adId=A015483720D2R9RPSPHVK&amp;url=%2FFlexible-Brush%25EF%25BC%258CNylon-Cleaner-8-2-inch-Cleaning%2Fdp%2FB0895XZJHZ%2Fref%3Dsr_1_2_sspa%3Fcrid%3DPDCOSZW06F7%26keywords%3Dair%2Bgap%2Bcleaner%26qid%3D1661259721%26sprefix%3Dair%2Bgap%2Bclean%252Caps%252C312%26sr%3D8-2-spons%26psc%3D1&amp;qualifier=1661259721&amp;id=3211092245360980&amp;widgetName=sp_atf\" target=\"_blank\">air gap cleaner<\/a><\/em><\/strong> <em><sub><sup>(amazon link)<\/sup><\/sub><\/em>, a <strong><em><a rel=\"noreferrer noopener\" href=\"https:\/\/www.amazon.com\/gp\/slredirect\/picassoRedirect.html\/ref=pa_sp_atf_aps_sr_pg1_1?ie=UTF8&amp;adId=A03126031EJ06BIM78KC5&amp;url=%2FPlumbing-Remover-Bathtub-Bathroom-Kitchen%2Fdp%2FB07VF4WTFV%2Fref%3Dsr_1_2_sspa%3Fcrid%3D3730LNXW61MBP%26keywords%3Ddrain%2Bsnake%26qid%3D1661259899%26sprefix%3Ddra%2Bsnake%252Caps%252C305%26sr%3D8-2-spons%26psc%3D1&amp;qualifier=1661259899&amp;id=37940595468781&amp;widgetName=sp_atf\" target=\"_blank\">sink snake<\/a><\/em><\/strong> <em><sub><sup>(amazon link)<\/sup><\/sub><\/em>, or even a long cable for this purpose.<\/li>\n\n\n\n<li>Insert the tool into the air gap tubing. Do not put it in the inlet tube but in the tube that&rsquo;s connected to the garbage disposal.&nbsp;<\/li>\n\n\n\n<li>Push the tool down the air gap. You might feel the blockage as you push the tool down the length of the air gap and through the hose. Use enough force to push down the debris but at the same time be careful not to damage anything.&nbsp;<\/li>\n<\/ol>\n\n\n\n<p class=\"has-text-align-center\">\n    <a data-amazonimages=\"\" target=\"_blank\" title=\"Flexible Drain Brush&#65292;Nylon Cleaner Double Ended Elastic Hose Pipe 67-inch and 2 PCS 8.2-inch Straw Cleaning Brush\" href=\"https:\/\/www.amazon.com\/dp\/B0895XZJHZ?tag=hvacbuzz-20\" rel=\"nofollow noopener\"><noscript><img decoding=\"async\" class=\"size-large aligncenter\" src=\"https:\/\/m.media-amazon.com\/images\/I\/415YGXBCX5L._SL500_.jpg\" alt=\"Flexible Drain Brush&#65292;Nylon Cleaner Double Ended Elastic Hose Pipe 67-inch and 2 PCS 8.2-inch Straw Cleaning Brush\" title=\"Flexible Drain Brush&#65292;Nylon Cleaner Double Ended Elastic Hose Pipe 67-inch and 2 PCS 8.2-inch Straw Cleaning Brush\"><\/noscript><img decoding=\"async\" class=\"size-large aligncenter lazyload\" src=\"https:\/\/m.media-amazon.com\/images\/I\/415YGXBCX5L._SL500_.jpg\" alt=\"Flexible Drain Brush&#65292;Nylon Cleaner Double Ended Elastic Hose Pipe 67-inch and 2 PCS 8.2-inch Straw Cleaning Brush\" title=\"Flexible Drain Brush&#65292;Nylon Cleaner Double Ended Elastic Hose Pipe 67-inch and 2 PCS 8.2-inch Straw Cleaning Brush\" data-mvt-skip=\"src\" loading=\"lazy\" data-trellis-processed=\"1\"><\/a>\n<\/p>\n\n\n\n<p>Sometimes, the clog can be caused by an abrupt blockage, and other times, it is caused by a build-up of food particles. <\/p>\n\n\n\n<p>To avoid the build-up of debris, it&rsquo;s recommended that you clean the air gap at least once every two months.&nbsp;<\/p>\n\n\n\n<p>To remove a garbage disposal plug, you need to first unplug it from the electrical outlet. Then, remove the hose that&rsquo;s connected to the unit. <\/p>\n\n\n\n<p>I recommend putting a bucket underneath the hose because there would most likely be water in it. The next step is to use a screwdriver and hammer to knock the plug out.&nbsp;<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Sources<\/h2>\n\n\n\n<p><a href=\"https:\/\/www.tampaapplianceparts.com\/blog\/what-is-a-dishwasher-air-gap\/\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/www.tampaapplianceparts.com\/blog\/what-is-a-dishwasher-air-gap\/<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/www.thespruce.com\/dishwasher-venting-2718654\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/www.thespruce.com\/dishwasher-venting-2718654<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/www.hunker.com\/12000170\/purpose-of-air-gap-on-a-dishwasher\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/www.hunker.com\/12000170\/purpose-of-air-gap-on-a-dishwasher<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/www.tuckersac.com\/blog\/plumbing-service\/causes-of-backflow-in-your-plumbing\/\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/www.tuckersac.com\/blog\/plumbing-service\/causes-of-backflow-in-your-plumbing\/<\/a><\/p>\n\n\n\n<p><a href=\"https:\/\/www.blackburnplumbingtopeka.com\/dishwasher-not-draining-this-should-help\/\" target=\"_blank\" rel=\"noreferrer noopener\">https:\/\/www.blackburnplumbingtopeka.com\/dishwasher-not-draining-this-should-help\/<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Dishwashers need water to function, which means that they feature plumbing connections. Like every other plumbing connection, dishwasher connections are at risk of experiencing plumbing-related problems.&nbsp; One such problem is &hellip;<\/p>\n","protected":false},"author":59,"featured_media":28537,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_themeisle_gutenberg_block_has_review":false,"disable-in-feed":false,"article-schema-type":"","disable-critical-css":false,"footnotes":""},"categories":[464,296,12,300],"tags":[236],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v22.3 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Dishwasher Air Gap | What Is It and Why Is It Used? - The Tibble<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/thetibble.com\/dishwasher-air-gap-what-why\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Dishwasher Air Gap | What Is It and Why Is It Used? - The Tibble\" \/>\n<meta property=\"og:description\" content=\"Dishwashers need water to function, which means that they feature plumbing connections. 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