My Furnace Is Blowing Cold Air – Do I Have A Broken Heater?

broken heater Fox & Sons

Tips for Dealing with a Broken Heater That’s Blowing Cold Air

Few things are more disappointing than coming to your house on a cold fall night to find your heater blowing cold air. While this can happen any time of the year, it’s often an issue on some of the first really cold days of the season when your system hasn’t been used in a while.

Not only is this uncomfortable, but it’s also concerning as you wonder whether you have a major issue that will need to be fixed. The good news is that many times if your unit is blowing cold air, it’s because of a simple issue that can be easily resolved. With that in mind, here are some tips to help you troubleshoot a heater that is blowing cold air.

Start With the Furnace Settings

One common cause of a basic furnace blowing cold air is the system’s settings. For example, if the fan is set to “on,” the blower on your unit will run 24/7, even when it’s not heating.

Obviously, the result is cold air blowing in your home. So, an easy first step to troubleshooting this issue is checking the furnace’s settings and ensuring that they are on “Auto.” This will mean that the fan only runs when the unit is heating.

Do you Have an Overheated Heater?

If your unit periodically starts blowing cold air, it could mean that it’s overheating. This could be caused by a number of issues, but often indicates that the unit needs to be replaced.

Other signs that your unit is nearing the end of its lifespan are increased utility costs, strange noises, repeated short cycling or frequent repairs. If you believe that your unit is overheating, it’s best to have an HVAC professional check it out.

They can determine what’s causing it to overheat and can advise you of what’s needed to resolve the issue. It’s a good idea to handle any such issues during the fall before the coldest days of the year arrive, as no one wants to have an HVAC emergency in the middle of winter.

Checking Air Filters

One easy fix could be replacing air filters. If the filters in your home are dirty, they can restrict airflow in your system, causing it to blow cold air. Obviously, this is inefficient and not good for your unit. By regularly replacing your air filters, you can ensure that your system is working efficiently while also helping to maintain the air quality in your home.

Generally, air filters should be replaced at least every 90 days, but if you have pets or family members with allergies, it’s a good idea to replace them every 45 to 60 days. Regardless of when you last changed the filter, if your unit is blowing cold air, check the filters to make sure that they’re not suffocating your system.

Hopefully, these tips will help you troubleshoot some issues with your furnace this fall and winter. If they don’t help you resolve the issue, contact your HVAC technician to have your unit serviced so that it’s working properly for the colder days ahead.

Fox & Sons Are Your HVAC Experts

Fox & Sons have been a trusted name in the Vernon community for over 20 years. Providing plumbing, HVAC and electrical services, they are available to meet all of your home service needs. Their commitment to quality workmanship, exceptional customer service, and competitive pricing make them the company to call in the Vernon area.

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