{"id":16651,"date":"2025-01-29T01:39:06","date_gmt":"2025-01-29T07:39:06","guid":{"rendered":"https:\/\/www.galmicheandsons.com\/hvac-blog\/?p=16651"},"modified":"2025-10-08T03:48:42","modified_gmt":"2025-10-08T08:48:42","slug":"common-furnace-installation-mistakes","status":"publish","type":"post","link":"https:\/\/www.galmicheandsons.com\/hvac-blog\/common-furnace-installation-mistakes\/","title":{"rendered":"Avoid These 5 Common Furnace Installation Mistakes"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_84 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\/common-furnace-installation-mistakes\/#1_Choosing_the_Wrong_Furnace_Size\" >1. Choosing the Wrong Furnace Size<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/common-furnace-installation-mistakes\/#How_to_Avoid_This_Mistake\" >How to Avoid This Mistake:<\/a><\/li><\/ul><\/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\/common-furnace-installation-mistakes\/#2_Poor_Ductwork_Design_and_Installation\" >2. Poor Ductwork Design and Installation<\/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\/common-furnace-installation-mistakes\/#How_to_Avoid_This_Mistake-2\" >How to Avoid This Mistake:<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/common-furnace-installation-mistakes\/#3_Incorrect_Ventilation_Setup\" >3. Incorrect Ventilation Setup<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/common-furnace-installation-mistakes\/#How_to_Avoid_This_Mistake-3\" >How to Avoid This Mistake:<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/common-furnace-installation-mistakes\/#4_Ignoring_Manufacturer_Guidelines\" >4. Ignoring Manufacturer Guidelines<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/common-furnace-installation-mistakes\/#How_to_Avoid_This_Mistake-4\" >How to Avoid This Mistake:<\/a><\/li><\/ul><\/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\/common-furnace-installation-mistakes\/#5_Skipping_Professional_Installation\" >5. Skipping Professional Installation<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/common-furnace-installation-mistakes\/#How_to_Avoid_This_Mistake-5\" >How to Avoid This Mistake:<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/common-furnace-installation-mistakes\/#FAQs_About_Furnace_Installation_Mistakes\" >FAQs About Furnace Installation Mistakes<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/common-furnace-installation-mistakes\/#Contact_Galmiche_Sons_to_Avoid_Furnace_Installation_Mistakes\" >Contact Galmiche &amp; Sons to Avoid Furnace Installation Mistakes<\/a><\/li><\/ul><\/nav><\/div>\n<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-content\/uploads\/common-furnace-installation-mistakes-1-300x200.jpg\" alt=\"Common Furnace Installation Mistakes\" width=\"300\" height=\"200\" class=\"alignleft size-medium wp-image-16688\" srcset=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-content\/uploads\/common-furnace-installation-mistakes-1-300x200.jpg 300w, https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-content\/uploads\/common-furnace-installation-mistakes-1.jpg 600w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><p>Installing a furnace is a significant investment that impacts the comfort and energy efficiency of your home. However, improper installation can lead to costly repairs, higher energy bills, and even safety hazards. To ensure a smooth and efficient installation process, it&rsquo;s essential to avoid common furnace installation mistakes. In this guide, we&rsquo;ll cover the top five mistakes to watch out for and how to avoid them.<\/p>\r\n<p>To ensure your furnace installation goes off without a hitch or request a quote for <a href=\"https:\/\/www.galmicheandsons.com\/furnace-installation-services.html\">furnace installation service<\/a> in St. Louis, contact the experts at Galmiche &amp; Sons today.<\/p>\r\n<h2><span class=\"ez-toc-section\" id=\"1_Choosing_the_Wrong_Furnace_Size\"><\/span>1. Choosing the Wrong Furnace Size<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n<p>One of the most common furnace installation mistakes is selecting a furnace that&rsquo;s either too large or too small for your home. A furnace that&rsquo;s too small will struggle to heat your home adequately, leading to uneven temperatures and increased wear and tear. On the other hand, an oversized furnace can cycle on and off too frequently, wasting energy and shortening the system&rsquo;s lifespan.<\/p>\r\n<h3><span class=\"ez-toc-section\" id=\"How_to_Avoid_This_Mistake\"><\/span>How to Avoid This Mistake:<span class=\"ez-toc-section-end\"><\/span><\/h3>\r\n<p>Have a professional HVAC contractor perform a load calculation to determine the correct <a href=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/what-size-furnace-do-i-need-for-my-home\/\">size furnace for your home<\/a>. This calculation considers factors like square footage, insulation, and local climate to ensure optimal performance.<\/p>\r\n<h2><span class=\"ez-toc-section\" id=\"2_Poor_Ductwork_Design_and_Installation\"><\/span>2. Poor Ductwork Design and Installation<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n<p>Even the most efficient furnace won&rsquo;t perform well if the ductwork is poorly designed or installed. Common issues include leaks, incorrect sizing, and improper sealing, which can lead to significant energy loss and uneven heating.<\/p>\r\n<h3><span class=\"ez-toc-section\" id=\"How_to_Avoid_This_Mistake-2\"><\/span>How to Avoid This Mistake:<span class=\"ez-toc-section-end\"><\/span><\/h3>\r\n<p>Work with an experienced HVAC professional who understands the importance of proper <a href=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/why-does-ductwork-design-matter\/\">ductwork design<\/a>. They will ensure your duct system is appropriately sized, sealed, and insulated to maximize efficiency and comfort.<\/p>\r\n<img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-content\/uploads\/common-furnace-installation-mistakes-2-300x200.jpg\" alt=\"Avoid Furnace Installation Mistakes\" width=\"300\" height=\"200\" class=\"alignright size-medium wp-image-16689\" srcset=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-content\/uploads\/common-furnace-installation-mistakes-2-300x200.jpg 300w, https:\/\/www.galmicheandsons.com\/hvac-blog\/wp-content\/uploads\/common-furnace-installation-mistakes-2.jpg 600w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><h2><span class=\"ez-toc-section\" id=\"3_Incorrect_Ventilation_Setup\"><\/span>3. Incorrect Ventilation Setup<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n<p>Proper ventilation is crucial for the safe operation of your furnace. Mistakes such as improper vent pipe sizing or poor placement can result in carbon monoxide buildup, posing serious health risks.<\/p>\r\n<h3><span class=\"ez-toc-section\" id=\"How_to_Avoid_This_Mistake-3\"><\/span>How to Avoid This Mistake:<span class=\"ez-toc-section-end\"><\/span><\/h3>\r\n<p>Ensure your furnace is installed by a certified technician who follows local building codes and manufacturer guidelines for venting. Regular maintenance checks can also help identify and resolve any ventilation issues.<\/p>\r\n<h2><span class=\"ez-toc-section\" id=\"4_Ignoring_Manufacturer_Guidelines\"><\/span>4. Ignoring Manufacturer Guidelines<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n<p>Each furnace model comes with specific installation instructions provided by the manufacturer. Ignoring these guidelines can lead to improper installation, reduced efficiency, and potential safety hazards.<\/p>\r\n<h3><span class=\"ez-toc-section\" id=\"How_to_Avoid_This_Mistake-4\"><\/span>How to Avoid This Mistake:<span class=\"ez-toc-section-end\"><\/span><\/h3>\r\n<p>Choose a reputable HVAC contractor who is familiar with your furnace model and adheres to the manufacturer&rsquo;s instructions during installation.<\/p>\r\n<h2><span class=\"ez-toc-section\" id=\"5_Skipping_Professional_Installation\"><\/span>5. Skipping Professional Installation<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n<p>Some homeowners attempt to install their furnaces themselves or hire unqualified technicians to save money. However, furnace installation is a complex process that requires specialized knowledge and tools. <a href=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/diy-furnace-installation\/\">DIY furnace installation<\/a> often results in costly mistakes, voided warranties, and safety risks.<\/p>\r\n<h3><span class=\"ez-toc-section\" id=\"How_to_Avoid_This_Mistake-5\"><\/span>How to Avoid This Mistake:<span class=\"ez-toc-section-end\"><\/span><\/h3>\r\n<p>Always hire a licensed and experienced HVAC contractor for your furnace installation. Professional installation ensures the job is done correctly and safely, giving you peace of mind and long-term savings.<\/p>\r\n<hr>\r\n<h2><span class=\"ez-toc-section\" id=\"FAQs_About_Furnace_Installation_Mistakes\"><\/span>FAQs About Furnace Installation Mistakes<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-68e6256a37843\"><strong class=\"schema-faq-question\">How can I tell if my furnace was installed incorrectly?<\/strong> <p class=\"schema-faq-answer\">Signs of improper installation include uneven heating, higher-than-expected energy bills, strange noises, or frequent system breakdowns. If you notice any of these issues, contact a professional HVAC technician for an inspection.<\/p><\/div> <div class=\"schema-faq-section\" id=\"faq-question-68e6256a3786c\"><strong class=\"schema-faq-question\">Can I fix furnace installation mistakes after the fact?<\/strong> <p class=\"schema-faq-answer\">Yes, many installation errors can be corrected by a qualified technician. However, addressing these issues early is crucial to prevent further damage or inefficiency.<\/p><\/div> <div class=\"schema-faq-section\" id=\"faq-question-68e6256a3787f\"><strong class=\"schema-faq-question\">How do I choose the right HVAC contractor?<\/strong> <p class=\"schema-faq-answer\">Look for contractors with proper licensing, certifications, and positive reviews. Request references and ensure they have experience with your specific furnace model.<\/p><\/div> <div class=\"schema-faq-section\" id=\"faq-question-68e6256a37891\"><strong class=\"schema-faq-question\">Why is proper furnace sizing so important?<\/strong> <p class=\"schema-faq-answer\">A correctly sized furnace ensures optimal performance, energy efficiency, and comfort. An improperly sized furnace can lead to uneven temperatures, increased energy costs, and premature wear.<\/p><\/div> <\/div>\n\r\n<hr>\r\n<h2><span class=\"ez-toc-section\" id=\"Contact_Galmiche_Sons_to_Avoid_Furnace_Installation_Mistakes\"><\/span>Contact Galmiche &amp; Sons to Avoid Furnace Installation Mistakes<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n<p>At Galmiche &amp; Sons, we understand how important proper furnace installation is for your home&rsquo;s comfort and efficiency. Our team of experienced technicians is committed to providing expert installation services in St. Louis, ensuring your furnace operates safely and effectively.<\/p>\r\n<p>Contact us today to learn more or schedule a consultation. Don&rsquo;t let furnace installation mistakes compromise your comfort\u2014trust our <a href=\"https:\/\/www.galmicheandsons.com\/contact-galmiche.php\">heating and air conditioning experts<\/a> for professional, reliable service.<\/p>","protected":false},"excerpt":{"rendered":"<p>Installing a furnace is a significant investment that impacts the comfort and energy efficiency of your home. However, improper installation can lead to costly repairs, higher energy bills, and even safety hazards. To ensure a smooth and efficient installation process, it&rsquo;s essential to avoid common furnace installation mistakes. In this guide, we&rsquo;ll cover the top five mistakes to watch out for and how to avoid them. To ensure your furnace installation goes off without a hitch or request a quote &hellip; <a href=\"https:\/\/www.galmicheandsons.com\/hvac-blog\/common-furnace-installation-mistakes\/\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">Avoid These 5 Common Furnace Installation Mistakes<\/span><\/a><\/p>\n","protected":false},"author":6,"featured_media":16688,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_mbp_gutenberg_autopost":false,"footnotes":""},"categories":[62,27,11],"tags":[],"class_list":["post-16651","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-furnace-installation","category-furnace-tips","category-furnaces"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Furnace Installation Mistakes to Avoid | St. Louis HVAC Tips<\/title>\n<meta name=\"description\" content=\"Avoid costly furnace installation mistakes! 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