Why Is Furnace Blowing Cold Air – Professional Tips

Furnace Blowing Cold Air -min

Date: 25 Jul, 2022

Author: Vitaly Stotland

Furnaces are complex machines. These furnaces work hard to keep a house warm, but sometimes they stop working. As you turn on the heat, you expect it to warm up your home. But when you turn up the thermostat and the furnace doesn’t respond, it’s time to figure out what’s wrong. In this article, we’ll walk you through the most likely causes of a furnace that blows cold air. When that happens, it’s important to solve the problem right away. Here’s why the furnace is blowing cold air, and how we can fix it.

Causes of Your Furnace’s Lack of Warm Air Production:

There may be a problem with the flame detector, gas supply, air filter, pilot light, or condensate lines if your furnace is pumping chilly air into your house. You can quickly fix many of these problems on your own by disinfecting or replacing gas furnace parts. Let’s talk about the numerous methods by which you might be able to handle these problems on your own.

Damage to the Pilot Light:

It could be a good idea to make sure the pilot light on your gas system is operational if your furnace is blowing cold air. Your gas furnace’s pilot light starts the burners so that heat can be produced by the appliance. However, on older gas furnaces, problems with it are frequent. Therefore, to relight the pilot, we advise using the instruction manual of your furnace.

Locate the Reset Toggle and Pilot Light Assembly:

Locating the pilot assembly and its reset toggle is the first step to take if you want to relight it on your own. Typically, you can find the reset toggle close to the furnace’s base. If you are having trouble locating the pilot light assembly and reset switch, please consult your instruction kit. Locate the reset toggle, then turn it to the off position to turn the gas off.

Turn on the Reset Switch:

To give extra gas time to leave the furnace’s chamber before turning the reset switch to the On position, we advise waiting a few minutes. To ensure that gas supply can reach the pilot light, turn the reset toggle to the Pilot setting next. Locate the reset button on your furnace and hold it down while lighting a match in front of the pilot light after you’ve modified this setting. The pilot light will start to develop a flame, which you can see.

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Release the reset button once you’ve managed to ignite a flame. Congratulations! Your furnace should now turn on to heat your home now that you have successfully re-lit the pilot light.

Some gas furnace models don’t use a pilot light to start the heating process. Flame detectors are the only means by which a furnace can successfully complete its heating cycle without pilot lights. You will soon lose heat if your flame detector is covered in dust, filth, or grime, and your furnace will start blowing chilly air. However, you can easily clean the flame sensor in your furnace to resolve this problem.

Moreover, you might also count on air duct cleaning service in Gainesville GA to clean the flame detector and restart the heating system.

Limited Airflow by the Air Filter:

Incoming air from your gas furnace can get caught if the air filter in your furnace is covered in dirt, grime, or soot. Long heating cycles and overheating problems are typical indicators of filthy air filters. Your heater will circulate chilly air throughout your home as a result of the typical overheating problem. We advise changing the polluted air filter with a fresh one to restore the flow of warm air in your home. Your gas furnace will no longer overheat since the new air filter won’t restrict airflow.

Low Gas Supply in the House:

If your heater is spewing chilly air, there may be a serious problem with your home’s gas supply line. If your furnace doesn’t get enough gas to complete its usual heating operation, then it can automatically shut itself off. Sadly, there is no quick cure for this problem on your own. We advise hiring a qualified HVAC expert to handle gas furnace repairs. HVAC cleaning in Buford is your go-to cleaning agency.

Obstructed Condensate Lines:

Have you observed that your home’s furnace is not operating properly? Modern high-tech furnaces are designed with condensate drain lines that help with moisture removal. The burners may go out if there is a clog in the condensate lines, which would result in the furnace blowing chilly air into your house.

Damaged Ductwork:

Your home’s ductwork may have gaps and cracks that are causing the furnace to blast cold air. These varying sizes of apertures allow cold attic air to enter the air ducts. Even if your furnace is blowing warm air and is operating properly, it may have leaks by the time the air reaches your vents. The warm air could be sent to the vents considerably more effectively if the ducts were sealed.

Faulty Settings of the Furnace:

We advise verifying that your home’s thermostat is set to Auto if your heater is spewing cold air.

Your furnace will run nonstop throughout the day even if it is not producing heat if you have accidentally set your thermostat to the On position. To guarantee that the gas furnace in your home will only operate during the regular heating process, simply change this thermostat setting to the Auto channel. 

So, if your furnace is blowing cold air, there are a few things you can do to try and fix the problem. First, check to make sure that all of the registers in your home are open and that nothing is blocking them. If that trick does not work, then it is the time to call a expert. A technician will be able to diagnose the issue and help you get your furnace up and running again in no time. Have you ever had to deal with this issue? What did you do to solve it?

By Vitaly Stotland

Vitaly loves to read and post a lot of infomation throughout the web. His main niches of writting are home improvement and services.

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