{"id":1286,"date":"2022-12-12T11:00:00","date_gmt":"2022-12-12T16:00:00","guid":{"rendered":"https:\/\/www.jnaonline.com\/blog\/?p=1286"},"modified":"2026-03-16T09:08:30","modified_gmt":"2026-03-16T13:08:30","slug":"what-are-the-signs-of-a-furnace-going-bad","status":"publish","type":"post","link":"https:\/\/www.jnaonline.com\/blog\/heating-service\/what-are-the-signs-of-a-furnace-going-bad\/","title":{"rendered":"What Are the Signs of a Furnace Going Bad?"},"content":{"rendered":"<div class=\"wp-block-image\">\n<figure class=\"alignright size-medium\"><a href=\"https:\/\/www.jnaonline.com\/blog\/wp-content\/uploads\/2022\/12\/What-Are-the-Signs-of-a-Furnace-Going-Bad.jpg\"><img loading=\"lazy\" width=\"200\" height=\"300\" src=\"https:\/\/www.jnaonline.com\/blog\/wp-content\/uploads\/2022\/12\/What-Are-the-Signs-of-a-Furnace-Going-Bad-200x300.jpg\" alt=\"old-furnace-in-need-of-replacement\" class=\"wp-image-1287\" srcset=\"https:\/\/www.jnaonline.com\/blog\/wp-content\/uploads\/2022\/12\/What-Are-the-Signs-of-a-Furnace-Going-Bad-200x300.jpg 200w, https:\/\/www.jnaonline.com\/blog\/wp-content\/uploads\/2022\/12\/What-Are-the-Signs-of-a-Furnace-Going-Bad.jpg 400w\" sizes=\"(max-width: 200px) 100vw, 200px\" \/><\/a><\/figure><\/div>\n\n\n<p>There are plenty of minor concerns\u2014and sometimes even major ones\u2014that can be completely resolved with thorough, professional furnace repair. But sometimes, repairs either cannot fully resolve a problem or are so costly that you would be better off investing in a new furnace. Learning about<a href=\"https:\/\/www.jnaonline.com\/blog\/heating-service\/10-things-that-might-go-wrong-with-your-furnace\/\"> common furnace problems homeowners face<\/a> can help you determine whether a repair or replacement makes more sense. How can you tell which situation you are in? And how can you make sure you don\u2019t have to replace your furnace any sooner than is absolutely necessary?<\/p>\n\n\n\n<p>We\u2019ll go over some common symptoms that indicate that it\u2019s time for furnace repair, as well as some indicators that you might want to think about replacing your furnace. We\u2019ll also discuss<a href=\"https:\/\/www.jnaonline.com\/blog\/heating-service\/5-repairs-furnace-might-need\/\"> repairs your furnace may need<\/a> and the two best ways to prolong your furnace\u2019s life.<\/p>\n\n\n\n<h2><strong>What Are the Signs You Need Heater Replacement or Heating Replacement?<\/strong><\/h2>\n\n\n\n<p>Several warning signs may indicate your heating system is failing and may need replacement:<\/p>\n\n\n\n<ul><li>Your furnace is 15\u201320 years old or older<\/li><li>Frequent repairs or recurring breakdowns<\/li><li>Rising energy bills without increased usage<\/li><li>Uneven heating or cold spots in your home<\/li><li>Strange noises such as banging, rattling, or squealing<\/li><li>The system runs constantly but struggles to maintain temperature<\/li><\/ul>\n\n\n\n<p>When these issues appear, a professional evaluation can determine whether heater replacement or heating replacement is the most efficient long-term solution.<\/p>\n\n\n\n<!--more-->\n\n\n\n<h2>Time for Furnace Repair<\/h2>\n\n\n\n<ul><li><strong>Noises:<\/strong> Banging, clattering, clicking, or bubbling like an overboiling kettle are all signs that you need <a href=\"\/heating\/furnace-service\" target=\"_blank\" rel=\"noreferrer noopener\">furnace repair in Lockport, IL<\/a>.<\/li><\/ul>\n\n\n\n<ul><li><strong>Smells:<\/strong> An aroma of burnt dust is normal when you first run your furnace in the fall, but if the smell doesn\u2019t go away, or you smell anything else suspicious, call for repairs.<\/li><\/ul>\n\n\n\n<ul><li><strong>Erratic Heat:<\/strong> If the temperature fluctuates too widely, or some areas of your home are warm while others are chilly, repairs can help.<\/li><\/ul>\n\n\n\n<ul><li><strong>Excessive Utility Bills:<\/strong> If you\u2019re using more fuel than you used to, repairs might be able to help you get your furnace back to efficient operation.<\/li><\/ul>\n\n\n\n<h2>Time for Furnace Replacement<\/h2>\n\n\n\n<ul><li><strong>Age:<\/strong> While an electric furnace may live more than 20 years, a gas furnace rarely lasts more than 15, and as it ages, it becomes less efficient and requires more repairs. If you\u2019re facing an expensive repair on an older furnace, replacement is probably a better bet.<\/li><\/ul>\n\n\n\n<ul><li><strong>Frequent Repairs:<\/strong> If you find yourself calling a technician for furnace repairs more and more frequently, you should keep in mind that those expenses add up. If you\u2019re noticing recurring issues, reviewing the<a href=\"https:\/\/www.jnaonline.com\/blog\/heating-service\/what-are-the-signs-of-a-furnace-going-bad\/\"> warning signs your furnace is failing<\/a> can help you decide whether replacement might end up being more cost efficient.<\/li><\/ul>\n\n\n\n<ul><li><strong>Inefficiency:<\/strong> If maintenance and repairs can\u2019t bring your furnace\u2019s efficiency back up, or it\u2019s simply an inefficient older furnace and you\u2019re interested in a newer, more efficient one, we\u2019re here to discuss high-efficiency furnace options with you.<\/li><\/ul>\n\n\n\n<ul><li><strong>Corrosion:<\/strong> If you see corroded areas on your furnace, this is not something that can be completely resolved with repair. It\u2019s time for a new furnace.<\/li><\/ul>\n\n\n\n<h2>Prolonging Furnace Life<\/h2>\n\n\n\n<p>There are two things you can do throughout your furnace\u2019s lifetime that will decrease the need for repairs and increase the number of years that your furnace will keep your home cozy.<\/p>\n\n\n\n<ul><li><strong>Air Filter Changes:<\/strong> You can do this yourself, and you should do it every 1-3 months during the months you&#8217;re using your furnace. Eliminating dust and particles will decrease wear and tear, prevent overheating, and help your furnace go as long as possible.<\/li><\/ul>\n\n\n\n<ul><li><strong>Annual Maintenance:<\/strong> Making sure a technician inspects, tests, cleans, and lubricates your furnace once a year will improve efficiency, decrease the need for repairs, extend your furnace\u2019s life, and ensure that it is running safely without posing any hazards from fuel or carbon monoxide leaks. We even offer a residential maintenance program we call the <a href=\"\/about\/maintenance-program\" target=\"_blank\" rel=\"noreferrer noopener\">Comfort Club<\/a>, which offers discounts, priority customer status, and even credit toward future furnace replacement.<\/li><\/ul>\n\n\n\n<h2><strong>Frequently Asked Questions<\/strong><\/h2>\n\n\n\n<p><strong>Question: What are the common signs that a furnace is going bad?<\/strong><strong><br><\/strong><strong>Answer:<\/strong> Common warning signs include unusual noises, uneven heating, frequent cycling, and rising energy bills. You may also notice weak airflow, strange odors, or a furnace that struggles to maintain the set temperature. These issues often indicate internal wear or system inefficiency that may require professional inspection.<\/p>\n\n\n\n<p><strong>Question: Why is my furnace making unusual noises?<\/strong><strong><br><\/strong><strong>Answer:<\/strong> A furnace that produces banging, rattling, or squealing sounds may have loose components, worn belts, or airflow problems. These noises can signal mechanical issues that worsen over time if ignored. Having a technician inspect the system early can prevent further damage and restore normal operation.<\/p>\n\n\n\n<p><strong>Question: Does a sudden increase in energy bills mean my furnace is failing?<\/strong><strong><br><\/strong><strong>Answer:<\/strong> A sudden rise in heating costs can indicate that your furnace is losing efficiency. As components wear out or airflow becomes restricted, the system must work harder to maintain the desired temperature. This increased workload results in higher energy consumption and may signal the need for maintenance or replacement.<\/p>\n\n\n\n<p><strong>Question: How does uneven heating relate to furnace problems?<\/strong><strong><br><\/strong><strong>Answer:<\/strong> Uneven heating throughout the home may mean the furnace is struggling to distribute warm air effectively. Causes can include failing components, clogged filters, duct issues, or reduced system capacity. When some rooms feel colder than others, it is often a sign the heating system needs professional evaluation.<\/p>\n\n\n\n<p><strong>Question: When should I consider replacing my furnace instead of repairing it?<\/strong><strong><br><\/strong><strong>Answer:<\/strong> If your furnace frequently breaks down, struggles to heat your home, or is nearing the end of its typical lifespan, replacement may be the more practical option. Newer systems are often more energy efficient and reliable, which can reduce long-term heating costs and improve indoor comfort.<\/p>\n\n\n\n<script type=\"application\/ld+json\">\n{\n  \"@context\": \"https:\/\/schema.org\",\n  \"@type\": \"FAQPage\",\n  \"mainEntity\": [\n    {\n      \"@type\": \"Question\",\n      \"name\": \"What are the common signs that a furnace is going bad?\",\n      \"acceptedAnswer\": {\n        \"@type\": \"Answer\",\n        \"text\": \"Common warning signs include unusual noises, uneven heating, frequent cycling, and rising energy bills. You may also notice weak airflow, strange odors, or a furnace that struggles to maintain the set temperature. 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Newer systems are often more energy efficient and reliable, which can reduce long-term heating costs and improve indoor comfort.\"\n      }\n    }\n  ]\n}\n<\/script>\n\n\n\n\n<p class=\"has-text-align-center\"><a href=\"\/contact\/send-message\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>Contact J&amp;A today<\/strong><\/a><strong>, Sleep-tight tonight!<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>We\u2019ll go over some common symptoms that indicate it\u2019s time for furnace repair and some indicators that you might want to think about replacing your furnace.<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[76],"tags":[155,134],"_links":{"self":[{"href":"https:\/\/www.jnaonline.com\/blog\/wp-json\/wp\/v2\/posts\/1286"}],"collection":[{"href":"https:\/\/www.jnaonline.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.jnaonline.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.jnaonline.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.jnaonline.com\/blog\/wp-json\/wp\/v2\/comments?post=1286"}],"version-history":[{"count":6,"href":"https:\/\/www.jnaonline.com\/blog\/wp-json\/wp\/v2\/posts\/1286\/revisions"}],"predecessor-version":[{"id":1714,"href":"https:\/\/www.jnaonline.com\/blog\/wp-json\/wp\/v2\/posts\/1286\/revisions\/1714"}],"wp:attachment":[{"href":"https:\/\/www.jnaonline.com\/blog\/wp-json\/wp\/v2\/media?parent=1286"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.jnaonline.com\/blog\/wp-json\/wp\/v2\/categories?post=1286"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.jnaonline.com\/blog\/wp-json\/wp\/v2\/tags?post=1286"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}