{"id":10948,"date":"2024-10-04T10:37:36","date_gmt":"2024-10-04T17:37:36","guid":{"rendered":"https:\/\/www.appliancepartspros.com\/b\/?p=10948"},"modified":"2026-07-14T09:57:34","modified_gmt":"2026-07-14T16:57:34","slug":"common-water-heater-problems-and-diy-fixes","status":"publish","type":"post","link":"https:\/\/www.appliancepartspros.com\/b\/common-water-heater-problems-and-diy-fixes\/","title":{"rendered":"Common water heater problems &#038; DIY fixes"},"content":{"rendered":"","protected":false},"excerpt":{"rendered":"<p>Learn about common water heater problems and how to fix them with this easy DIY guide from the appliance experts!<\/p>\n","protected":false},"author":3,"featured_media":10949,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_aviaLayoutBuilderCleanData":"[av_image src='https:\/\/www.appliancepartspros.com\/b\/wp-content\/uploads\/2024\/10\/APP-blog-rectangle-1.jpg' attachment='10950' attachment_size='full' copyright='' caption='' styling='' align='center' font_size='' overlay_opacity='0.4' overlay_color='#000000' overlay_text_color='#ffffff' animation='no-animation' hover='' appearance='' link='' target='' title_attr='' alt_attr='' lazy_loading='disabled' id='' custom_class='' av_element_hidden_in_editor='0' av_uid='av-m1ur9u3s' admin_preview_bg=''][\/av_image]\r\n\r\n[av_textblock size='' av-medium-font-size='' av-small-font-size='' av-mini-font-size='' font_color='' color='' id='' custom_class='' av_uid='av-m1ur436t' admin_preview_bg='']\r\n<span style=\"font-weight: 400;\">Whether you're dealing with a water heater leak repair or troubleshooting temperature issues, knowing how to perform basic repairs can save time and money. Let\u2019s break down the most common problems in water heaters so you can confidently get your unit back up to speed.<\/span>\r\n\r\n<span style=\"font-weight: 400;\">If you need any replacement parts for your appliances, you can enter your <\/span><a href=\"https:\/\/www.appliancepartspros.com\/b\/how-to-find-your-appliances-model-number\/\"><b>model number<\/b><\/a><span style=\"font-weight: 400;\"> at<\/span> <a href=\"https:\/\/www.appliancepartspros.com\/\"><b>AppliancePartsPros.com<\/b><\/a><span style=\"font-weight: 400;\"> to order them. Most orders arrive in just two business days, and we have thousands of free guides to show you how to install your new parts.<\/span>\n\n<div style=\"border-left:4px solid #E89805;background:#FFF8EC;padding:9px 14px;margin:14px 0;font-size:14.5px;line-height:1.5;color:#1A1A1A;font-family:system-ui,-apple-system,sans-serif\">\u26a0\ufe0f <b>Smell gas?<\/b> Stop \u2014 get outside, then call your gas utility (or 911) from there. <a href=\"#app-safety-notes\">Full safety notes below<\/a>.<\/div>\n\n<h2><b>Water heater problems &amp; why they happen<\/b><\/h2>\r\n<span style=\"font-weight: 400;\">Understanding the reason behind water heater issues is the first step in making repairs. Here are some of the most common problems, along with typical causes.<\/span>\r\n<h3><b>Leaks<\/b><\/h3>\r\n<span style=\"font-weight: 400;\">A water heater leak is one of the most frequent issues homeowners face. Leaks can occur due to:<\/span>\r\n<ul>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Loose connections between the water heater and the supply pipes<\/span><\/li>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Corrosion or rust on the inside of the tank, which can cause small holes<\/span><\/li>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">A faulty pressure relief valve can cause water to escape from the tank<\/span><\/li>\r\n<\/ul>\r\n<h4><em><b>How to fix it<\/b><\/em><\/h4>\r\n<ul>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Use a wrench to check and tighten any loose connections between the heater and supply pipes. Be cautious not to overtighten anything, as this could cause damage.<\/span><\/li>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">If you determine that the pressure relief valve is the culprit, you can easily replace it. You\u2019ll need to turn off the water heater, drain a portion of the tank, and swap the old valve with a new one. Be sure to follow your manufacturer\u2019s instructions for this process.<\/span><\/li>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">If you inspect the tank and find that it\u2019s rusted or corroded, you'll need to replace the entire water heater.<\/span><\/li>\r\n<\/ul>\r\n<h3><b>No hot water<\/b><\/h3>\r\n<span style=\"font-weight: 400;\">A water heater that\u2019s not producing hot water can have one of many issues, depending on whether you have a gas or electric model.<\/span>\r\n<h4><b>On a gas water heater:<\/b><\/h4>\r\n<ul>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">If the pilot light has gone out, the burner won\u2019t ignite to heat the water.<\/span><\/li>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">A faulty thermocouple can prevent the pilot light from staying lit.<\/span><\/li>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">A problem with the gas supply could prevent hot water. The gas valve must be open and functioning properly.<\/span><\/li>\r\n<\/ul>\r\n<h4><b>On an electric water heater:<\/b><\/h4>\r\n<ul>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">If the circuit breaker has tripped, the heating elements won\u2019t work.<\/span><\/li>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">A burned-out heating element won\u2019t heat the water.<\/span><\/li>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">If the thermostat fails, it won\u2019t send voltage to the elements to heat the water.<\/span><\/li>\r\n<\/ul>\r\n<h4><em><b>How to fix it<\/b><\/em><\/h4>\r\n<b>On a gas unit:<\/b><span style=\"font-weight: 400;\">\u00a0<\/span>\r\n\r\n<span style=\"font-weight: 400;\">Relight the pilot light by following the manufacturer\u2019s instructions. If it won\u2019t stay lit, test and replace the thermocouple if needed. Be sure to check the gas supply as well to make sure there are no leaks or other problems.<\/span>\r\n\r\n<b>On an electric unit<\/b><span style=\"font-weight: 400;\">:\u00a0<\/span>\r\n\r\n<span style=\"font-weight: 400;\">Reset the circuit breaker and use a multimeter to test the heating elements. If the heating elements are faulty, replace them. If the elements are good, then the thermostat is likely faulty.<\/span>\r\n<h3><b>Water is too hot<\/b><\/h3>\r\n<span style=\"font-weight: 400;\">If your water heater produces excessively hot water, it may have a faulty thermostat or temperature setting.<\/span>\r\n<h4><em><b>How to fix it<\/b><\/em><\/h4>\r\n<ul>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Make sure that the temperature setting isn\u2019t above 120\u00b0F (49\u00b0C), which is the recommended safe level.<\/span><\/li>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">If the thermostat isn\u2019t responding to temperature adjustments, it may need to be replaced. To do this, you\u2019ll need to disconnect the heater from the outlet, remove the thermostat and install a new one.<\/span><\/li>\r\n<\/ul>\r\n<h3><b>Strange noises<\/b><\/h3>\r\n<span style=\"font-weight: 400;\">Loud rumbling or popping noises coming from your water heater are usually caused by sediment buildup inside the tank.<\/span>\r\n<h4><em><b>How to fix it<\/b><\/em><\/h4>\r\n<ul>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Remove sediment buildup by flushing the tank. You\u2019ll need to drain it completely and refill it with water.<\/span><\/li>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">If your water heater frequently develops sediment or you live in an area with hard water, consider using a water softener to reduce mineral deposits.<\/span><\/li>\r\n<\/ul>\r\n<h3><b>Pilot light won\u2019t stay lit (gas models)<\/b><\/h3>\r\n<span style=\"font-weight: 400;\">A pilot light that repeatedly goes out on a gas water heater typically signals a problem with the thermocouple, gas supply, or venting system.<\/span>\r\n<h4><em><b>How to fix it<\/b><\/em><\/h4>\r\n<ul>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Replace the thermocouple if it\u2019s malfunctioning. A bad thermocouple can cause the pilot light to go out frequently.\u00a0<\/span><\/li>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Check the gas supply. Make sure the gas valve is fully open and that there aren\u2019t any blockages in the supply line.<\/span><\/li>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Inspect the venting system and remove any obstructions. Insufficient airflow can cause the pilot light to go out.<\/span><\/li>\r\n<\/ul>\r\n<h2><b>How to maintain your water heater to prevent future problems<\/b><\/h2>\r\n<span style=\"font-weight: 400;\">Taking the time to perform regular maintenance can prevent many common issues with water heaters \u2014 and save you a ton of time and money in the long run. Here are some tips to help you make the most of your unit.<\/span>\r\n<ul>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Flush the tank at least once a year to remove sediment buildup that can reduce efficiency and cause damage.<\/span><\/li>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Inspect and test the pressure relief valve every 3-4 months to make sure it\u2019s functioning properly.<\/span><\/li>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Keep an eye on the anode rod, which helps prevent corrosion inside the tank. Check it every year and replace it if it\u2019s worn out.<\/span><\/li>\r\n \t<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Keep the thermostat set to 120\u00b0F to prevent overheating and scalding.<\/span><\/li>\r\n<\/ul>\r\n<h2><b>Frequently asked questions<\/b><\/h2>\r\n<span style=\"font-weight: 400;\">Get answers to some of the most common questions about water heaters.<\/span>\r\n<h3><b>Why is my water heater only warm, not hot?<\/b><\/h3>\r\n<span style=\"font-weight: 400;\">This could be caused by a broken dip tube or a malfunctioning thermostat or heating element(s).<\/span>\r\n<h3><b>What do I do if my water heater isn\u2019t staying hot?<\/b><\/h3>\r\n<span style=\"font-weight: 400;\">You may need to flush the tank, replace the heating elements, or see if your water heater is big enough for your home\u2019s needs.<\/span>\r\n<h2><b>Additional information<\/b><\/h2>\r\n<span style=\"font-weight: 400;\">Thanks for reading! If you still need some replacement parts, 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;\">. We offer over two million parts and most orders arrive in two business days. If you need some help with finding the right part or placing an order, you can contact our team at 1 (877) 477-7278.<\/span>\r\n\r\n<span style=\"font-weight: 400;\">While you\u2019re waiting for your new part to arrive, you can explore our <\/span><a href=\"https:\/\/www.appliancepartspros.com\/b\/\"><b>DIY blog<\/b><\/a><span style=\"font-weight: 400;\"> and watch thousands of video tutorials on <\/span><a href=\"https:\/\/www.youtube.com\/@appliancepartspros\/videos\"><b>our YouTube channel<\/b><\/a><span style=\"font-weight: 400;\">.<\/span>\r\n\r\n<span style=\"font-weight: 400;\">Be sure to follow us on <\/span><a href=\"http:\/\/facebook.com\/appliancepartspros\"><b>Facebook<\/b><\/a><span style=\"font-weight: 400;\">, <\/span><a href=\"https:\/\/twitter.com\/applpartspros\"><b>Twitter<\/b><\/a><span style=\"font-weight: 400;\"> and <\/span><a href=\"https:\/\/instagram.com\/appliancepartspros?igshid=OGQ5ZDc2ODk2ZA==\"><b>Instagram<\/b><\/a><span style=\"font-weight: 400;\"> to see our latest repair guides!<\/span>\n\n<em><b>Important<\/b><b>:<\/b><span style=\"font-weight: 400;\"> The information provided in this article may not apply to your specific appliance model. While we strive to offer helpful advice for DIY appliance repairs, variations in models and configurations can lead to differences in troubleshooting steps, error codes and part replacements. For the most accurate guidance, we strongly recommend consulting the technical sheet for your specific appliance model.<\/span><\/em>\n\n<div id=\"app-safety-notes\" style=\"border:1px solid #E6E6E6;border-radius:8px;overflow:hidden;margin:22px 0;font-family:system-ui,-apple-system,sans-serif\"><div style=\"background:#E89805;color:#fff;padding:9px 16px;font-weight:700;font-size:15px\">\ud83d\udd25&nbsp;Gas safety \u2014 before you start<\/div><ul style=\"margin:0;padding:14px 20px 14px 38px;font-size:15px;line-height:1.6;color:#1A1A1A;background:#fff\"><li style=\"margin:6px 0\"><b>Shut off the gas supply<\/b> before you start.<\/li><li style=\"margin:6px 0\">Follow your <b>local codes<\/b>.<\/li><li style=\"margin:6px 0\">Keep a <b>working carbon monoxide detector<\/b> nearby.<\/li><li style=\"margin:6px 0\">A <b>yellow or flickering flame<\/b> means incomplete combustion \u2014 fix it, don't ignore it.<\/li><li style=\"margin:6px 0\">If you smell a <b>strong, persistent gas odor<\/b>: get everyone outside, don't touch any switches or create a spark, and <b>call your gas utility or 911 from outside<\/b>.<\/li><\/ul><\/div>\n\n<div style=\"border:1px solid #E6E6E6;border-radius:8px;overflow:hidden;margin:22px 0;font-family:system-ui,-apple-system,sans-serif\"><div style=\"background:#1C437C;color:#fff;padding:9px 16px;font-weight:700;font-size:15px\">\u26a1&nbsp;Electrical safety \u2014 before you start<\/div><ul style=\"margin:0;padding:14px 20px 14px 38px;font-size:15px;line-height:1.6;color:#1A1A1A;background:#fff\"><li style=\"margin:6px 0\"><b>Disconnect power<\/b> before you start \u2014 unplug it or switch off the breaker, and <b>confirm it's dead<\/b>.<\/li><li style=\"margin:6px 0\">Follow your <b>local electrical code<\/b>.<\/li><li style=\"margin:6px 0\">Anything involving <b>household wiring, outlets, or the breaker panel<\/b> itself is <b>licensed-electrician territory<\/b>.<\/li><\/ul><\/div>\n[\/av_textblock]\r\n\r\n[av_social_share title='Share this entry' buttons='' share_facebook='' share_twitter='' share_whatsapp='' share_pinterest='' share_reddit='' share_linkedin='' share_tumblr='' share_vk='' share_mail='' share_yelp='' yelp_link='https:\/\/www.yelp.com' style='' av-desktop-hide='' av-medium-hide='' av-small-hide='' av-mini-hide='' alb_description='' id='' custom_class='' av_uid='av-ojlnc4']\r\n\r\n","_aviaLayoutBuilder_active":"active","footnotes":""},"categories":[495,8,2252],"tags":[753,269,743,474,666,676,61,670,390,716,2250,2265,2264,2262],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v24.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\r\n<title>Common water heater problems &amp; DIY fixes<\/title>\r\n<meta name=\"description\" content=\"Learn about common water heater problems and how to fix them with this easy DIY guide from the appliance experts!\" \/>\r\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" 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