{"id":743,"date":"2021-03-01T11:00:14","date_gmt":"2021-03-01T16:00:14","guid":{"rendered":"https:\/\/www.dehartinc.com\/blog\/?p=743"},"modified":"2025-10-31T11:01:42","modified_gmt":"2025-10-31T18:01:42","slug":"why-is-my-furnace-blowing-cold-air","status":"publish","type":"post","link":"https:\/\/www.dehartinc.com\/blog\/heating-service\/why-is-my-furnace-blowing-cold-air\/","title":{"rendered":"\u201cWhy Is My Furnace Blowing Cold Air?\u201d"},"content":{"rendered":"\n
\"woman-wearing-parka-and-sipping-from-mug-on-couch\"<\/figure><\/div>\n\n\n\n

With cooler temperatures lingering a bit longer this year,\nthe last thing you need in your home is a malfunctioning furnace. So if yours\nis all of the sudden blowing out cold air, this is of course a big problem. <\/p>\n\n\n\n

There are a number of reasons that this might be happening. We\u2019ll dive into that below, so keep reading! But please do not try to diagnose or fix your furnace yourself. You could wind up with more problems rather than less and a pretty big headache. Instead, call our professionals if you suspect any of the following issues, or if nothing you do will resolve the cold air coming out of your room vents. <\/p>\n\n\n\n\n\n\n\n

Thermostat Trouble<\/h2>\n\n\n\n

Sometimes your furnace problem is not a problem with the\nheating system itself, but instead with the thermostat. If your thermostat is\nmalfunctioning, it can be misreading indoor temperatures, or it might not be\nproperly regulating the temperature in the furnace. <\/p>\n\n\n\n

First, check your thermostat and make sure it\u2019s not set to \u201cON\u201d instead of set to \u201cAUTO.\u201d Otherwise, the fan will keep blowing, even if your furnace isn\u2019t heating the air. So when the temperature of the room has reached the desired setting on your thermostat, the air coming through won\u2019t be heated. As a result, it may feel lukewarm or even cold to you in comparison. <\/p>\n\n\n\n

Don\u2019t worry if this was the mistake\u2014many times family\nmembers can accidentally change the setting! If this is the problem, it\u2019s an\neasy one to fix! <\/p>\n\n\n\n

A Clogged Air Filter<\/h2>\n\n\n\n

This is another problem that\u2019s easy to fix. The air filter that comes standard with your furnace is in place to protect the interior components of the heater, and when it gets too clogged up in can create resistance against airflow. As a result, hot air can get trapped inside your furnace and the air you feel coming through won\u2019t be as powerful, which you can mistake for cool or lukewarm air. <\/p>\n\n\n\n

Be sure to change out this air filter every 1-3 months. If\nyou do this, and your thermostat isn\u2019t to blame for the cold air coming from\nyour furnace, then it might be one of the next couple problems to blame. <\/p>\n\n\n\n

Broken Heating Element in an Electric Furnace<\/h2>\n\n\n\n

Do you have an electric furnace? There are heating elements (called heat exchangers within a gas-powered furnace) that allow the air going into your home to actually pick up heat. If any of these become damaged, due to wear and tear or whatnot, then you\u2019re furnace cannot adequately do its job. <\/p>\n\n\n\n

Damaged Ductwork<\/h2>\n\n\n\n

Whether you have a gas or electric furnace, it utilizes\nductwork. Over the years that ductwork can accumulate damage from extreme\ntemperatures, rodents in the attic or crawlspace where the ductwork is\ninstalled, or even poor installation to begin with. <\/p>\n\n\n\n

Damaged ductwork can allow heated air from your furnace to\nescape into unoccupied spaces in your home, and therefore one or more of the\nvents won\u2019t distribute fully warmed air. You may feel a drop in heating power\nor a drop in the temperature. Be sure to give us a call if this is what you\nsuspect! <\/p>\n\n\n\n

For quality furnace services<\/a>, look no further than DeHart Plumbing, Heating, and Air Inc. Contact us<\/a> today! <\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"

There are a few reasons this can happen. Have you discovered any of these issues? <\/p>\n","protected":false},"author":1,"featured_media":1826,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[76],"tags":[110,88],"class_list":["post-743","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-heating-service","tag-furnace","tag-modesto"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/www.dehartinc.com\/blog\/wp-json\/wp\/v2\/posts\/743","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=743"}],"version-history":[{"count":3,"href":"https:\/\/www.dehartinc.com\/blog\/wp-json\/wp\/v2\/posts\/743\/revisions"}],"predecessor-version":[{"id":775,"href":"https:\/\/www.dehartinc.com\/blog\/wp-json\/wp\/v2\/posts\/743\/revisions\/775"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.dehartinc.com\/blog\/wp-json\/wp\/v2\/media\/1826"}],"wp:attachment":[{"href":"https:\/\/www.dehartinc.com\/blog\/wp-json\/wp\/v2\/media?parent=743"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.dehartinc.com\/blog\/wp-json\/wp\/v2\/categories?post=743"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.dehartinc.com\/blog\/wp-json\/wp\/v2\/tags?post=743"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}