{"id":536,"date":"2020-02-17T11:00:31","date_gmt":"2020-02-17T16:00:31","guid":{"rendered":"https:\/\/www.dehartinc.com\/blog\/?p=536"},"modified":"2025-10-31T09:39:18","modified_gmt":"2025-10-31T16:39:18","slug":"no-your-furnace-should-not-be-blowing-cool-air","status":"publish","type":"post","link":"https:\/\/www.dehartinc.com\/blog\/heating-service\/no-your-furnace-should-not-be-blowing-cool-air\/","title":{"rendered":"No, Your Furnace Should NOT Be Blowing Cool Air!"},"content":{"rendered":"\n<div class=\"wp-block-image\"><figure class=\"alignright\"><img loading=\"lazy\" decoding=\"async\" width=\"300\" height=\"219\" src=\"https:\/\/www.dehartinc.com\/blog\/wp-content\/uploads\/2021\/02\/teddy-300x219.png\" alt=\"winter-scene\" class=\"wp-image-745\" srcset=\"https:\/\/www.dehartinc.com\/blog\/wp-content\/uploads\/2021\/02\/teddy-300x219.png 300w, https:\/\/www.dehartinc.com\/blog\/wp-content\/uploads\/2021\/02\/teddy.png 708w\" sizes=\"auto, (max-width: 300px) 100vw, 300px\" \/><\/figure><\/div>\n\n\n\n<p>When you bought the furnace, you invested in\nan appliance that could keep your home warm in the winters. What happens if\nthat furnace starts acting like a second air conditioning unit and blows cold\nair when you need it to keep the indoor temperatures warm and cozy?<\/p>\n\n\n\n<!--more-->\n\n\n\n<p>You need to call in professionals to take care of the problem as soon as you can if that happens. Before you call someone, we think that it is important to understand <em>why<\/em> it is happening. There are several reasons why your furnace might be blowing cold air. We have outlined some of the common reasons for you to help you understand. And if you need anyone to come to look at it, do not hesitate to call us for <a href=\"\/hvac\/heating\/furnaces\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"furnace repair in Modesto, CA (opens in a new tab)\">furnace repair in Modesto, CA<\/a>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Why Your Furnace Is Blowing Cold\nAir<\/h2>\n\n\n\n<p>Some of the most common reasons why your\nfurnace is blowing cold air can include:<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Thermostat problems<\/h3>\n\n\n\n<p>Sometimes, the problem is not in your furnace\nat all. Your thermostat could be causing problems. If your thermostat is not\nworking properly, it will not send the right signals for your furnace to turn\non and off on time and be unable to regulate indoor temperatures.<\/p>\n\n\n\n<p>Make sure you have placed your thermostat away\nfrom a heat source. If there is no obvious problem with it, we suggest calling\na professional to take a look at it to see if it\u2019s malfunctioning.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Dirty or clogged air filter<\/h3>\n\n\n\n<p>A dirty or clogged air filter can cause\nairflow problems. When airflow to your furnace becomes restricted, the furnace\ncan overheat. Modern furnaces are designed to shut down in case of unsafe\ntemperatures to avoid causing damage. However, the fan from your heat exchanger\nwill continue blowing air, and it will circulate cold air throughout the house.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Broken heating elements<\/h3>\n\n\n\n<p>The heating elements inside the furnace can\nget damaged over time. If the heating elements are broken or malfunctioning, it\ncan cause your furnace to blow cool air instead of heating it up properly\nbefore blowing it out.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Ductwork leaks<\/h3>\n\n\n\n<p>Another reason your furnace might be blowing\ncold air is a leak or several leaks in your ductwork. When there are breaches\nin the ductwork, the warm air can escape from the damaged areas and let outside\nair in. Most of the air it lets in is colder than the air coming from your\nfurnace, causing the temperatures to drop significantly by the time the air\nhandler distributes the air indoors.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Call A Professional!<\/h2>\n\n\n\n<p>If your furnace is no longer blowing warm air\nand keeping the indoor temperature warm and cozy, we highly recommend calling\nin an HVAC professional for repairs. Many people try to troubleshoot the\nproblems themselves without realizing what the root cause for their furnace\nblowing cold air is. If you try to fix it yourself without the proper tools and\ntraining, you can risk causing significant damage to the system.<\/p>\n\n\n\n<p>A certified professional has the tools, training, experience, and expertise to safely and adequately recognize and fix the problems in your furnace. At DeHart Plumbing Heating &amp; Air Inc., you get the best professionals in Modesto for your furnace repair needs. <\/p>\n\n\n\n<p style=\"text-align:center\"><strong><a href=\"\/contact\/schedule-service\" target=\"_blank\" rel=\"noreferrer noopener\" aria-label=\"Schedule Service with DeHart Plumbing Heating &amp; Air Inc. Today!  (opens in a new tab)\">Schedule Service with DeHart Plumbing Heating &amp; Air Inc. Today! <\/a><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>There are several reasons why your furnace might be blowing cold air.<\/p>\n","protected":false},"author":1,"featured_media":745,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[76],"tags":[110,123,88],"class_list":["post-536","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-heating-service","tag-furnace","tag-furnace-repair","tag-modesto"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.dehartinc.com\/blog\/wp-json\/wp\/v2\/posts\/536","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.dehartinc.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.dehartinc.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.dehartinc.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.dehartinc.com\/blog\/wp-json\/wp\/v2\/comments?post=536"}],"version-history":[{"count":3,"href":"https:\/\/www.dehartinc.com\/blog\/wp-json\/wp\/v2\/posts\/536\/revisions"}],"predecessor-version":[{"id":746,"href":"https:\/\/www.dehartinc.com\/blog\/wp-json\/wp\/v2\/posts\/536\/revisions\/746"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.dehartinc.com\/blog\/wp-json\/wp\/v2\/media\/745"}],"wp:attachment":[{"href":"https:\/\/www.dehartinc.com\/blog\/wp-json\/wp\/v2\/media?parent=536"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.dehartinc.com\/blog\/wp-json\/wp\/v2\/categories?post=536"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.dehartinc.com\/blog\/wp-json\/wp\/v2\/tags?post=536"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}