{"id":18279,"date":"2025-10-06T05:45:00","date_gmt":"2025-10-06T10:45:00","guid":{"rendered":"https:\/\/www.galmicheandsons.com\/hvac-blog\/?p=18279"},"modified":"2025-10-22T13:58:49","modified_gmt":"2025-10-22T18:58:49","slug":"furnace-maintenance-for-old-units","status":"publish","type":"post","link":"https:\/\/www.galmicheandsons.com\/hvac-blog\/furnace-maintenance-for-old-units\/","title":{"rendered":"Furnace Maintenance for Old Units: Extend the Life of Your System"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_85 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title ez-toc-toggle\" style=\"cursor:pointer\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 eztoc-toggle-hide-by-default' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/furnace-maintenance-for-old-units\/#Why_Furnace_Maintenance_for_Old_Units_Matters\" >Why Furnace Maintenance for Old Units Matters<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/furnace-maintenance-for-old-units\/#Signs_Your_Older_Furnace_Needs_Extra_Care\" >Signs Your Older Furnace Needs Extra Care<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/furnace-maintenance-for-old-units\/#How_Proper_Maintenance_Extends_Furnace_Lifespan\" >How Proper Maintenance Extends Furnace Lifespan<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/furnace-maintenance-for-old-units\/#Professional_Inspections_Prevent_Breakdowns\" >Professional Inspections Prevent Breakdowns<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/furnace-maintenance-for-old-units\/#Regular_Filter_Changes_Improve_Airflow\" >Regular Filter Changes Improve Airflow<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/furnace-maintenance-for-old-units\/#Cleaning_and_Lubrication_Reduce_Strain_on_Older_Furnaces\" >Cleaning and Lubrication Reduce Strain on Older Furnaces<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/furnace-maintenance-for-old-units\/#Adjustments_and_Calibrations_Ensure_Efficiency\" >Adjustments and Calibrations Ensure Efficiency<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/furnace-maintenance-for-old-units\/#FAQs_About_Furnace_Maintenance_for_Old_Units\" >FAQs About Furnace Maintenance for Old Units<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/furnace-maintenance-for-old-units\/#Extend_the_Life_of_Your_Furnace_with_Furnace_Maintenance_for_Old_Units\" >Extend the Life of Your Furnace with Furnace Maintenance for Old Units<\/a><\/li><\/ul><\/nav><\/div>\n<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-content\/uploads\/2025\/10\/furnace-maintenance-for-old-units-1-300x179.jpg\" alt=\"Furnace Maintenance for Old Units: Extend the Life of Your System\" width=\"300\" height=\"179\" class=\"alignright size-medium wp-image-18318\" srcset=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-content\/uploads\/2025\/10\/furnace-maintenance-for-old-units-1-300x179.jpg 300w, https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-content\/uploads\/2025\/10\/furnace-maintenance-for-old-units-1.jpg 600w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><p>If your home relies on an older furnace to keep you comfortable, keeping it running efficiently and safely is essential. With the right care, you can often delay the cost of a full replacement and get more years out of your heating system. Furnace maintenance for old units not only improves performance but also helps you avoid breakdowns during the cold St. Louis winters.<\/p>\r\n<p>To learn more or schedule <a href=\"https:\/\/www.galmicheandsons.com\/furnace-maintenance.html\">furnace maintenance<\/a> in St. Louis, contact the experts at Galmiche and Sons today.<\/p>\r\n<h2><span class=\"ez-toc-section\" id=\"Why_Furnace_Maintenance_for_Old_Units_Matters\"><\/span>Why Furnace Maintenance for Old Units Matters<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n<p>Older furnaces face more wear and tear than newer models. As parts age, they become more prone to failure, which can lead to costly repairs or even complete system replacement. Regular maintenance helps identify issues early, improves energy efficiency, and ensures your furnace can still heat your home reliably.<\/p>\r\n<p><strong>Learn more about <a href=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/why-furnace-maintenance-is-important\/\">why furnace maintenance is important<\/a>.<\/strong><\/p>\r\n<h2><span class=\"ez-toc-section\" id=\"Signs_Your_Older_Furnace_Needs_Extra_Care\"><\/span>Signs Your Older Furnace Needs Extra Care<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n<ul>\r\n<li><strong>Unusual Noises<\/strong>: Clanking, banging, or rattling sounds can indicate loose or failing parts.<\/li>\r\n<li><strong>Uneven Heating<\/strong>: If some rooms feel colder than others, your system may be struggling to push air effectively.<\/li>\r\n<li><strong>Higher Energy Bills<\/strong>: An aging furnace that has not been serviced regularly may consume more energy to do the same job.<\/li>\r\n<li><strong>Frequent Cycling<\/strong>: Older units may turn on and off more often, signaling that something inside is wearing down.<\/li>\r\n<\/ul>\r\n<p><strong>Learn more about <a href=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/signs-your-furnace-needs-maintenance-before-it-fails\/\">signs your furnace needs maintenance<\/a>.<\/strong><\/p>\r\n<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-content\/uploads\/2025\/10\/furnace-maintenance-for-old-units-2-300x196.jpg\" alt=\"Furnace Maintenance for Old Units\" width=\"300\" height=\"196\" class=\"alignright size-medium wp-image-18319\" srcset=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-content\/uploads\/2025\/10\/furnace-maintenance-for-old-units-2-300x196.jpg 300w, https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-content\/uploads\/2025\/10\/furnace-maintenance-for-old-units-2.jpg 600w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><h2><span class=\"ez-toc-section\" id=\"How_Proper_Maintenance_Extends_Furnace_Lifespan\"><\/span>How Proper Maintenance Extends Furnace Lifespan<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n<h3><span class=\"ez-toc-section\" id=\"Professional_Inspections_Prevent_Breakdowns\"><\/span>Professional Inspections Prevent Breakdowns<span class=\"ez-toc-section-end\"><\/span><\/h3>\r\n<p>Having a technician inspect your furnace annually can uncover small problems before they escalate. In St. Louis, where winters can be harsh, a proactive approach ensures you will not be left without heat.<\/p>\r\n<h3><span class=\"ez-toc-section\" id=\"Regular_Filter_Changes_Improve_Airflow\"><\/span>Regular Filter Changes Improve Airflow<span class=\"ez-toc-section-end\"><\/span><\/h3>\r\n<p>Dirty filters make your furnace work harder, which accelerates wear and tear. Older systems especially benefit from clean airflow.<\/p>\r\n<h3><span class=\"ez-toc-section\" id=\"Cleaning_and_Lubrication_Reduce_Strain_on_Older_Furnaces\"><\/span>Cleaning and Lubrication Reduce Strain on Older Furnaces<span class=\"ez-toc-section-end\"><\/span><\/h3>\r\n<p>Dust buildup and dry moving parts can strain older furnaces. Professional cleaning and lubrication improve efficiency and reduce unnecessary stress on components.<\/p>\r\n<h3><span class=\"ez-toc-section\" id=\"Adjustments_and_Calibrations_Ensure_Efficiency\"><\/span>Adjustments and Calibrations Ensure Efficiency<span class=\"ez-toc-section-end\"><\/span><\/h3>\r\n<p>Technicians can fine-tune your system to keep it running as smoothly as possible, even as it ages.<\/p>\r\n<p><strong>Learn more about <a href=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/how-to-extend-furnace-lifespan\/\">how to extend furnace lifespan<\/a>.<\/strong><\/p>\r\n<hr>\r\n<h2><span class=\"ez-toc-section\" id=\"FAQs_About_Furnace_Maintenance_for_Old_Units\"><\/span>FAQs About Furnace Maintenance for Old Units<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\n<div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-68e625428b54c\"><strong class=\"schema-faq-question\">How often should I schedule maintenance for an older furnace?<\/strong> <p class=\"schema-faq-answer\">At least once a year, ideally before the heating season begins.<\/p><\/div> <div class=\"schema-faq-section\" id=\"faq-question-68e625428b57a\"><strong class=\"schema-faq-question\">Is it worth repairing an old furnace, or should I replace it?<\/strong> <p class=\"schema-faq-answer\">This depends on the condition of your system, repair costs, and its efficiency. Our technicians provide honest assessments to guide your decision.<\/p><\/div> <div class=\"schema-faq-section\" id=\"faq-question-68e625428b591\"><strong class=\"schema-faq-question\">Can maintenance improve the efficiency of an old unit?<\/strong> <p class=\"schema-faq-answer\">Yes, while it may not reach the efficiency of a new furnace, regular service can significantly reduce wasted energy.<\/p><\/div> <div class=\"schema-faq-section\" id=\"faq-question-68e625428b5bc\"><strong class=\"schema-faq-question\">What is the average lifespan of a furnace?<\/strong> <p class=\"schema-faq-answer\">Most furnaces last 15\u201320 years, but with proper furnace maintenance for old units, some can operate beyond that range.<\/p><\/div> <\/div>\n\r\n<hr>\r\n<h2><span class=\"ez-toc-section\" id=\"Extend_the_Life_of_Your_Furnace_with_Furnace_Maintenance_for_Old_Units\"><\/span>Extend the Life of Your Furnace with Furnace Maintenance for Old Units<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n<p>If you own an older furnace, the right maintenance can keep your home warm and comfortable while delaying the need for a costly replacement. Galmiche &#038; Sons has been helping St. Louis homeowners care for their heating systems for decades, and our team is ready to do the same for you.<\/p>\r\n<p>Contact Galmiche &#038; Sons today to schedule your furnace maintenance in St. Louis and give your old unit the care it needs to last longer.<\/p>","protected":false},"excerpt":{"rendered":"<p>If your home relies on an older furnace to keep you comfortable, keeping it running efficiently and safely is essential. With the right care, you can often delay the cost of a full replacement and get more years out of your heating system. Furnace maintenance for old units not only improves performance but also helps you avoid breakdowns during the cold St. Louis winters. To learn more or schedule furnace maintenance in St. Louis, contact the experts at Galmiche and &hellip; <a href=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/furnace-maintenance-for-old-units\/\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">Furnace Maintenance for Old Units: Extend the Life of Your System<\/span><\/a><\/p>\n","protected":false},"author":6,"featured_media":18318,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_mbp_gutenberg_autopost":false,"footnotes":""},"categories":[12,27,11,38],"tags":[],"class_list":["post-18279","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-furnace-maintenance","category-furnace-tips","category-furnaces","category-heating-cooling-faqs"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Furnace Maintenance for Old Units | St. Louis HVAC Tips<\/title>\n<meta name=\"description\" content=\"Keep your old furnace running efficiently with expert furnace maintenance for old units. Extend its life and avoid costly breakdowns this winter. Contact Galmiche and Sons today!\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/furnace-maintenance-for-old-units\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Furnace Maintenance for Old Units | St. Louis HVAC Tips\" \/>\n<meta property=\"og:description\" content=\"Keep your old furnace running efficiently with expert furnace maintenance for old units. Extend its life and avoid costly breakdowns this winter. Contact Galmiche and Sons today!\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/furnace-maintenance-for-old-units\/\" \/>\n<meta property=\"og:site_name\" content=\"St. Louis HVAC Tips - Galmiche &amp; Sons\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/GalmicheAndSons\/\" \/>\n<meta property=\"article:published_time\" content=\"2025-10-06T10:45:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-10-22T18:58:49+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-content\/uploads\/2025\/10\/furnace-maintenance-for-old-units-1.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"600\" \/>\n\t<meta property=\"og:image:height\" content=\"358\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Steve Dulle\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@GalmicheAndSon\" \/>\n<meta name=\"twitter:site\" content=\"@GalmicheAndSon\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Steve Dulle\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/furnace-maintenance-for-old-units\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/furnace-maintenance-for-old-units\\\/\"},\"author\":{\"name\":\"Steve Dulle\",\"@id\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/#\\\/schema\\\/person\\\/b90d5d47a6f393d93d6459a9aa8b2fe1\"},\"headline\":\"Furnace Maintenance for Old Units: Extend the Life of Your System\",\"datePublished\":\"2025-10-06T10:45:00+00:00\",\"dateModified\":\"2025-10-22T18:58:49+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/furnace-maintenance-for-old-units\\\/\"},\"wordCount\":571,\"publisher\":{\"@id\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/furnace-maintenance-for-old-units\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/wp-content\\\/uploads\\\/2025\\\/10\\\/furnace-maintenance-for-old-units-1.jpg\",\"articleSection\":[\"Furnace Maintenance\",\"Furnace Tips\",\"Furnaces\",\"Heating &amp; Cooling FAQs\"],\"inLanguage\":\"en-US\"},{\"@type\":[\"WebPage\",\"FAQPage\"],\"@id\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/furnace-maintenance-for-old-units\\\/\",\"url\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/furnace-maintenance-for-old-units\\\/\",\"name\":\"Furnace Maintenance for Old Units | St. Louis HVAC Tips\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/furnace-maintenance-for-old-units\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/furnace-maintenance-for-old-units\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/wp-content\\\/uploads\\\/2025\\\/10\\\/furnace-maintenance-for-old-units-1.jpg\",\"datePublished\":\"2025-10-06T10:45:00+00:00\",\"dateModified\":\"2025-10-22T18:58:49+00:00\",\"description\":\"Keep your old furnace running efficiently with expert furnace maintenance for old units. Extend its life and avoid costly breakdowns this winter. Contact Galmiche and Sons today!\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/furnace-maintenance-for-old-units\\\/#breadcrumb\"},\"mainEntity\":[{\"@id\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/furnace-maintenance-for-old-units\\\/#faq-question-68e625428b54c\"},{\"@id\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/furnace-maintenance-for-old-units\\\/#faq-question-68e625428b57a\"},{\"@id\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/furnace-maintenance-for-old-units\\\/#faq-question-68e625428b591\"},{\"@id\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/furnace-maintenance-for-old-units\\\/#faq-question-68e625428b5bc\"}],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/furnace-maintenance-for-old-units\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/furnace-maintenance-for-old-units\\\/#primaryimage\",\"url\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/wp-content\\\/uploads\\\/2025\\\/10\\\/furnace-maintenance-for-old-units-1.jpg\",\"contentUrl\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/wp-content\\\/uploads\\\/2025\\\/10\\\/furnace-maintenance-for-old-units-1.jpg\",\"width\":600,\"height\":358,\"caption\":\"Furnace Maintenance for Old Units: Extend the Life of Your System\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/furnace-maintenance-for-old-units\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"HVAC Tips\",\"item\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"HVAC Maintenance\",\"item\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/category\\\/hvac-maintenance\\\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Furnace Maintenance\",\"item\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/category\\\/hvac-maintenance\\\/furnace-maintenance\\\/\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"Furnace Maintenance for Old Units: Extend the Life of Your System\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/#website\",\"url\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/\",\"name\":\"St. Louis HVAC Tips - Galmiche & Sons\",\"description\":\"For Heating and Cooling services in St. Louis, contact Galmiche &amp; Sons, your St. Louis commercial and residential HVAC installation, maintenance, and repair experts.\",\"publisher\":{\"@id\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/#organization\",\"name\":\"Galmiche & Sons Heating & Cooling\",\"url\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/wp-content\\\/uploads\\\/organization-logo.png\",\"contentUrl\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/wp-content\\\/uploads\\\/organization-logo.png\",\"width\":\"696\",\"height\":\"696\",\"caption\":\"Galmiche & Sons Heating & Cooling\"},\"image\":{\"@id\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/#\\\/schema\\\/logo\\\/image\\\/\"},\"sameAs\":[\"https:\\\/\\\/www.facebook.com\\\/GalmicheAndSons\\\/\",\"https:\\\/\\\/x.com\\\/GalmicheAndSon\"]},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/#\\\/schema\\\/person\\\/b90d5d47a6f393d93d6459a9aa8b2fe1\",\"name\":\"Steve Dulle\",\"sameAs\":[\"https:\\\/\\\/www.silverscopedesign.com\\\/\",\"https:\\\/\\\/www.linkedin.com\\\/in\\\/stevedulle\\\/\"]},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/furnace-maintenance-for-old-units\\\/#faq-question-68e625428b54c\",\"position\":1,\"url\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/furnace-maintenance-for-old-units\\\/#faq-question-68e625428b54c\",\"name\":\"How often should I schedule maintenance for an older furnace?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"At least once a year, ideally before the heating season begins.\",\"inLanguage\":\"en-US\"},\"inLanguage\":\"en-US\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/furnace-maintenance-for-old-units\\\/#faq-question-68e625428b57a\",\"position\":2,\"url\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/furnace-maintenance-for-old-units\\\/#faq-question-68e625428b57a\",\"name\":\"Is it worth repairing an old furnace, or should I replace it?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"This depends on the condition of your system, repair costs, and its efficiency. Our technicians provide honest assessments to guide your decision.\",\"inLanguage\":\"en-US\"},\"inLanguage\":\"en-US\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/furnace-maintenance-for-old-units\\\/#faq-question-68e625428b591\",\"position\":3,\"url\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/furnace-maintenance-for-old-units\\\/#faq-question-68e625428b591\",\"name\":\"Can maintenance improve the efficiency of an old unit?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes, while it may not reach the efficiency of a new furnace, regular service can significantly reduce wasted energy.\",\"inLanguage\":\"en-US\"},\"inLanguage\":\"en-US\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/furnace-maintenance-for-old-units\\\/#faq-question-68e625428b5bc\",\"position\":4,\"url\":\"https:\\\/\\\/www.galmicheandsons.com\\\/hvac-blog\\\/furnace-maintenance-for-old-units\\\/#faq-question-68e625428b5bc\",\"name\":\"What is the average lifespan of a furnace?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most furnaces last 15u201320 years, but with proper furnace maintenance for old units, some can operate beyond that range.\",\"inLanguage\":\"en-US\"},\"inLanguage\":\"en-US\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Furnace Maintenance for Old Units | St. Louis HVAC Tips","description":"Keep your old furnace running efficiently with expert furnace maintenance for old units. Extend its life and avoid costly breakdowns this winter. Contact Galmiche and Sons today!","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.galmicheandsons.com\/hvac-blog\/furnace-maintenance-for-old-units\/","og_locale":"en_US","og_type":"article","og_title":"Furnace Maintenance for Old Units | St. Louis HVAC Tips","og_description":"Keep your old furnace running efficiently with expert furnace maintenance for old units. Extend its life and avoid costly breakdowns this winter. Contact Galmiche and Sons today!","og_url":"https:\/\/www.galmicheandsons.com\/hvac-blog\/furnace-maintenance-for-old-units\/","og_site_name":"St. Louis HVAC Tips - Galmiche &amp; Sons","article_publisher":"https:\/\/www.facebook.com\/GalmicheAndSons\/","article_published_time":"2025-10-06T10:45:00+00:00","article_modified_time":"2025-10-22T18:58:49+00:00","og_image":[{"width":600,"height":358,"url":"https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-content\/uploads\/2025\/10\/furnace-maintenance-for-old-units-1.jpg","type":"image\/jpeg"}],"author":"Steve Dulle","twitter_card":"summary_large_image","twitter_creator":"@GalmicheAndSon","twitter_site":"@GalmicheAndSon","twitter_misc":{"Written by":"Steve Dulle","Est. reading time":"4 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.galmicheandsons.com\/hvac-blog\/furnace-maintenance-for-old-units\/#article","isPartOf":{"@id":"https:\/\/www.galmicheandsons.com\/hvac-blog\/furnace-maintenance-for-old-units\/"},"author":{"name":"Steve Dulle","@id":"https:\/\/www.galmicheandsons.com\/hvac-blog\/#\/schema\/person\/b90d5d47a6f393d93d6459a9aa8b2fe1"},"headline":"Furnace Maintenance for Old Units: Extend the Life of Your System","datePublished":"2025-10-06T10:45:00+00:00","dateModified":"2025-10-22T18:58:49+00:00","mainEntityOfPage":{"@id":"https:\/\/www.galmicheandsons.com\/hvac-blog\/furnace-maintenance-for-old-units\/"},"wordCount":571,"publisher":{"@id":"https:\/\/www.galmicheandsons.com\/hvac-blog\/#organization"},"image":{"@id":"https:\/\/www.galmicheandsons.com\/hvac-blog\/furnace-maintenance-for-old-units\/#primaryimage"},"thumbnailUrl":"https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-content\/uploads\/2025\/10\/furnace-maintenance-for-old-units-1.jpg","articleSection":["Furnace Maintenance","Furnace Tips","Furnaces","Heating &amp; Cooling FAQs"],"inLanguage":"en-US"},{"@type":["WebPage","FAQPage"],"@id":"https:\/\/www.galmicheandsons.com\/hvac-blog\/furnace-maintenance-for-old-units\/","url":"https:\/\/www.galmicheandsons.com\/hvac-blog\/furnace-maintenance-for-old-units\/","name":"Furnace Maintenance for Old Units | St. Louis HVAC Tips","isPartOf":{"@id":"https:\/\/www.galmicheandsons.com\/hvac-blog\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.galmicheandsons.com\/hvac-blog\/furnace-maintenance-for-old-units\/#primaryimage"},"image":{"@id":"https:\/\/www.galmicheandsons.com\/hvac-blog\/furnace-maintenance-for-old-units\/#primaryimage"},"thumbnailUrl":"https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-content\/uploads\/2025\/10\/furnace-maintenance-for-old-units-1.jpg","datePublished":"2025-10-06T10:45:00+00:00","dateModified":"2025-10-22T18:58:49+00:00","description":"Keep your old furnace running efficiently with expert furnace maintenance for old units. Extend its life and avoid costly breakdowns this winter. Contact Galmiche and Sons today!","breadcrumb":{"@id":"https:\/\/www.galmicheandsons.com\/hvac-blog\/furnace-maintenance-for-old-units\/#breadcrumb"},"mainEntity":[{"@id":"https:\/\/www.galmicheandsons.com\/hvac-blog\/furnace-maintenance-for-old-units\/#faq-question-68e625428b54c"},{"@id":"https:\/\/www.galmicheandsons.com\/hvac-blog\/furnace-maintenance-for-old-units\/#faq-question-68e625428b57a"},{"@id":"https:\/\/www.galmicheandsons.com\/hvac-blog\/furnace-maintenance-for-old-units\/#faq-question-68e625428b591"},{"@id":"https:\/\/www.galmicheandsons.com\/hvac-blog\/furnace-maintenance-for-old-units\/#faq-question-68e625428b5bc"}],"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.galmicheandsons.com\/hvac-blog\/furnace-maintenance-for-old-units\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.galmicheandsons.com\/hvac-blog\/furnace-maintenance-for-old-units\/#primaryimage","url":"https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-content\/uploads\/2025\/10\/furnace-maintenance-for-old-units-1.jpg","contentUrl":"https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-content\/uploads\/2025\/10\/furnace-maintenance-for-old-units-1.jpg","width":600,"height":358,"caption":"Furnace Maintenance for Old Units: Extend the Life of Your System"},{"@type":"BreadcrumbList","@id":"https:\/\/www.galmicheandsons.com\/hvac-blog\/furnace-maintenance-for-old-units\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"HVAC Tips","item":"https:\/\/www.galmicheandsons.com\/hvac-blog\/"},{"@type":"ListItem","position":2,"name":"HVAC Maintenance","item":"https:\/\/www.galmicheandsons.com\/hvac-blog\/category\/hvac-maintenance\/"},{"@type":"ListItem","position":3,"name":"Furnace Maintenance","item":"https:\/\/www.galmicheandsons.com\/hvac-blog\/category\/hvac-maintenance\/furnace-maintenance\/"},{"@type":"ListItem","position":4,"name":"Furnace Maintenance for Old Units: Extend the Life of Your System"}]},{"@type":"WebSite","@id":"https:\/\/www.galmicheandsons.com\/hvac-blog\/#website","url":"https:\/\/www.galmicheandsons.com\/hvac-blog\/","name":"St. Louis HVAC Tips - Galmiche & Sons","description":"For Heating and Cooling services in St. Louis, contact Galmiche &amp; Sons, your St. Louis commercial and residential HVAC installation, maintenance, and repair experts.","publisher":{"@id":"https:\/\/www.galmicheandsons.com\/hvac-blog\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.galmicheandsons.com\/hvac-blog\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/www.galmicheandsons.com\/hvac-blog\/#organization","name":"Galmiche & Sons Heating & Cooling","url":"https:\/\/www.galmicheandsons.com\/hvac-blog\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/www.galmicheandsons.com\/hvac-blog\/#\/schema\/logo\/image\/","url":"https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-content\/uploads\/organization-logo.png","contentUrl":"https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-content\/uploads\/organization-logo.png","width":"696","height":"696","caption":"Galmiche & Sons Heating & Cooling"},"image":{"@id":"https:\/\/www.galmicheandsons.com\/hvac-blog\/#\/schema\/logo\/image\/"},"sameAs":["https:\/\/www.facebook.com\/GalmicheAndSons\/","https:\/\/x.com\/GalmicheAndSon"]},{"@type":"Person","@id":"https:\/\/www.galmicheandsons.com\/hvac-blog\/#\/schema\/person\/b90d5d47a6f393d93d6459a9aa8b2fe1","name":"Steve Dulle","sameAs":["https:\/\/www.silverscopedesign.com\/","https:\/\/www.linkedin.com\/in\/stevedulle\/"]},{"@type":"Question","@id":"https:\/\/www.galmicheandsons.com\/hvac-blog\/furnace-maintenance-for-old-units\/#faq-question-68e625428b54c","position":1,"url":"https:\/\/www.galmicheandsons.com\/hvac-blog\/furnace-maintenance-for-old-units\/#faq-question-68e625428b54c","name":"How often should I schedule maintenance for an older furnace?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"At least once a year, ideally before the heating season begins.","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/www.galmicheandsons.com\/hvac-blog\/furnace-maintenance-for-old-units\/#faq-question-68e625428b57a","position":2,"url":"https:\/\/www.galmicheandsons.com\/hvac-blog\/furnace-maintenance-for-old-units\/#faq-question-68e625428b57a","name":"Is it worth repairing an old furnace, or should I replace it?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"This depends on the condition of your system, repair costs, and its efficiency. Our technicians provide honest assessments to guide your decision.","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/www.galmicheandsons.com\/hvac-blog\/furnace-maintenance-for-old-units\/#faq-question-68e625428b591","position":3,"url":"https:\/\/www.galmicheandsons.com\/hvac-blog\/furnace-maintenance-for-old-units\/#faq-question-68e625428b591","name":"Can maintenance improve the efficiency of an old unit?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Yes, while it may not reach the efficiency of a new furnace, regular service can significantly reduce wasted energy.","inLanguage":"en-US"},"inLanguage":"en-US"},{"@type":"Question","@id":"https:\/\/www.galmicheandsons.com\/hvac-blog\/furnace-maintenance-for-old-units\/#faq-question-68e625428b5bc","position":4,"url":"https:\/\/www.galmicheandsons.com\/hvac-blog\/furnace-maintenance-for-old-units\/#faq-question-68e625428b5bc","name":"What is the average lifespan of a furnace?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Most furnaces last 15u201320 years, but with proper furnace maintenance for old units, some can operate beyond that range.","inLanguage":"en-US"},"inLanguage":"en-US"}]}},"_links":{"self":[{"href":"https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-json\/wp\/v2\/posts\/18279","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-json\/wp\/v2\/comments?post=18279"}],"version-history":[{"count":0,"href":"https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-json\/wp\/v2\/posts\/18279\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-json\/wp\/v2\/media\/18318"}],"wp:attachment":[{"href":"https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-json\/wp\/v2\/media?parent=18279"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-json\/wp\/v2\/categories?post=18279"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-json\/wp\/v2\/tags?post=18279"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}