{"id":3048,"date":"2026-06-08T11:00:00","date_gmt":"2026-06-08T15:00:00","guid":{"rendered":"https:\/\/www.comfortflow.com\/blog\/?p=3048"},"modified":"2026-06-09T17:53:13","modified_gmt":"2026-06-09T21:53:13","slug":"how-to-change-your-hvac-air-filter-step-by-step-guide","status":"publish","type":"post","link":"https:\/\/www.comfortflow.com\/blog\/air-conditioning-service\/how-to-change-your-hvac-air-filter-step-by-step-guide\/","title":{"rendered":"How to Change Your HVAC Air Filter (Step-by-Step Guide)"},"content":{"rendered":"\n<p>Your HVAC system works hard year-round to keep your home comfortable, and one of the easiest ways to help it perform efficiently is by regularly changing the air filter. Whether you rely on your heating system in the winter or need dependable <a href=\"https:\/\/www.comfortflow.com\/residential-hvac\/air-conditioning\" target=\"_blank\" rel=\"noopener\" title=\"air conditioning in Springfield\">air conditioning in Springfield<\/a> during the summer, a clean air filter plays a major role in maintaining indoor comfort and system performance.<\/p>\n\n\n\n<!--more-->\n\n\n\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/www.comfortflow.com\/blog\/wp-content\/uploads\/2026\/06\/Comfort-Flow-How-to-Change-Your-HVAC-Air-Filter-Step-by-Step-Guide.jpg\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/www.comfortflow.com\/blog\/wp-content\/uploads\/2026\/06\/Comfort-Flow-How-to-Change-Your-HVAC-Air-Filter-Step-by-Step-Guide-1024x576.jpg\" alt=\"A homeowner changing an air filter in his home.\" class=\"wp-image-3070\" srcset=\"https:\/\/www.comfortflow.com\/blog\/wp-content\/uploads\/2026\/06\/Comfort-Flow-How-to-Change-Your-HVAC-Air-Filter-Step-by-Step-Guide-1024x576.jpg 1024w, https:\/\/www.comfortflow.com\/blog\/wp-content\/uploads\/2026\/06\/Comfort-Flow-How-to-Change-Your-HVAC-Air-Filter-Step-by-Step-Guide-300x169.jpg 300w, https:\/\/www.comfortflow.com\/blog\/wp-content\/uploads\/2026\/06\/Comfort-Flow-How-to-Change-Your-HVAC-Air-Filter-Step-by-Step-Guide-768x432.jpg 768w, https:\/\/www.comfortflow.com\/blog\/wp-content\/uploads\/2026\/06\/Comfort-Flow-How-to-Change-Your-HVAC-Air-Filter-Step-by-Step-Guide-1536x864.jpg 1536w, https:\/\/www.comfortflow.com\/blog\/wp-content\/uploads\/2026\/06\/Comfort-Flow-How-to-Change-Your-HVAC-Air-Filter-Step-by-Step-Guide.jpg 1600w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/a><\/figure>\n\n\n\n<p>At Comfort Flow Heating, we believe homeowners should understand the simple maintenance tasks that can help extend the life of their HVAC systems. Follow this step-by-step guide to change your HVAC air filter safely and correctly.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Why Changing Your HVAC Air Filter Matters<\/h2>\n\n\n\n<p>Your air filter traps dust, dirt, pet dander, pollen, and other airborne particles before they circulate through your home. Over time, the filter becomes clogged, restricting airflow and forcing your HVAC system to work harder.<\/p>\n\n\n\n<p>Regular air filter replacement can help:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Improve indoor air quality<\/li>\n\n\n\n<li>Increase HVAC efficiency<\/li>\n\n\n\n<li>Lower energy costs<\/li>\n\n\n\n<li>Reduce strain on system components<\/li>\n\n\n\n<li>Extend the lifespan of your heating and cooling equipment<\/li>\n<\/ul>\n\n\n\n<p>Most homeowners should check their air filters every month and replace them every 1\u20133 months, depending on usage, pets, and indoor air quality needs.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Step 1: Turn Off Your HVAC System<\/h2>\n\n\n\n<p>Before changing the filter, turn off your heating or cooling system at the thermostat. This prevents unfiltered air from circulating through the system while the filter is removed.<\/p>\n\n\n\n<p>Safety should always come first when performing any HVAC maintenance.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Step 2: Locate the Air Filter<\/h2>\n\n\n\n<p>The filter is typically located in one of these areas:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Inside the return air vent<\/li>\n\n\n\n<li>Behind a return grille on a wall or ceiling<\/li>\n\n\n\n<li>Inside the air handler or furnace compartment<\/li>\n<\/ul>\n\n\n\n<p>If you&#8217;re unsure where your filter is located, consult your HVAC system manual or contact a professional for assistance.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Step 3: Remove the Old Filter<\/h2>\n\n\n\n<p>Carefully slide the existing filter out of its slot. Pay attention to the airflow direction arrow printed on the filter frame. This will help you install the new filter correctly.<\/p>\n\n\n\n<p>Take a moment to inspect the old filter. If it appears dirty, clogged, or discolored, replacement is overdue.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Step 4: Choose the Correct Replacement Filter<\/h2>\n\n\n\n<p>Check the dimensions printed on the side of the old filter. Common sizes include 16x20x1, 20x25x1, and 16x25x1, but your system may require a different size.<\/p>\n\n\n\n<p>Be sure to select a filter that matches both the size and recommended MERV rating for your HVAC system. Using the wrong filter can reduce efficiency and affect airflow.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Step 5: Install the New Filter<\/h2>\n\n\n\n<p>Insert the new filter into the slot with the airflow arrow pointing toward the HVAC unit. The arrow should follow the direction of air moving through the system.<\/p>\n\n\n\n<p>Make sure the filter fits securely without gaps around the edges.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Step 6: Restart Your HVAC System<\/h2>\n\n\n\n<p>Once the new filter is installed, turn your HVAC system back on at the thermostat. Check that the system starts normally and that airflow feels consistent throughout your home.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Keep Your HVAC System Running Efficiently<\/h2>\n\n\n\n<p>Changing your HVAC air filter is one of the simplest and most effective maintenance tasks you can perform. Staying on top of filter replacements helps improve efficiency, maintain healthy indoor air quality, and protect your investment in your heating and cooling system.<\/p>\n\n\n\n<p>If you need professional HVAC maintenance, repairs, or system replacement services, Comfort Flow Heating is here to help.<\/p>\n\n\n\n<p class=\"has-text-align-center\"><strong>Your comfort is our business! Comfort Flow Heating serves all of Oregon, so <a href=\"https:\/\/www.comfortflow.com\/contact\/send-a-message\" target=\"_blank\" rel=\"noopener\" title=\"contact our team today\">contact our team today<\/a> to schedule your appointment.<\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Your HVAC system works hard year-round to keep your home comfortable, and one of the easiest ways to help it perform efficiently is by regularly changing the air filter.<\/p>\n","protected":false},"author":1,"featured_media":3070,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[70],"tags":[13,344,92],"class_list":["post-3048","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-air-conditioning-service","tag-air-conditioning","tag-hvac-filter","tag-springfield"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.comfortflow.com\/blog\/wp-json\/wp\/v2\/posts\/3048","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.comfortflow.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.comfortflow.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.comfortflow.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.comfortflow.com\/blog\/wp-json\/wp\/v2\/comments?post=3048"}],"version-history":[{"count":17,"href":"https:\/\/www.comfortflow.com\/blog\/wp-json\/wp\/v2\/posts\/3048\/revisions"}],"predecessor-version":[{"id":3072,"href":"https:\/\/www.comfortflow.com\/blog\/wp-json\/wp\/v2\/posts\/3048\/revisions\/3072"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.comfortflow.com\/blog\/wp-json\/wp\/v2\/media\/3070"}],"wp:attachment":[{"href":"https:\/\/www.comfortflow.com\/blog\/wp-json\/wp\/v2\/media?parent=3048"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.comfortflow.com\/blog\/wp-json\/wp\/v2\/categories?post=3048"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.comfortflow.com\/blog\/wp-json\/wp\/v2\/tags?post=3048"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}