Solved! What To Do When Your Heater Blows Cold Air

Your furnace is meant to heat your home, but sometimes it produces nothing but chilly air. It’s frustrating to find your house heater not working correctly, especially since many different problems can lead to this issue. So what should you do to remedy it?

We’re committed to making home life comfortable at Thayer Air Conditioning. When our neighbors in New Braunfels find themselves without a working furnace, it’s our job to solve the problem. If you’re wondering what to do when your system stops producing heat, we’re here to share some helpful tips to combat the problem.

Reasons Why Your Furnace Is Blowing Cold Air

It can be hard to figure out what’s causing your heating troubles, especially if you’re not an HVAC technician. However, some issues are more common than others. By checking a few different parts on your furnace, you may be able to discover the problem and know when to schedule repairs.

Broken Pilot Light

If you have a gas furnace, a working pilot light is essential for igniting the burner. Without a lit pilot light, your burner won’t be able to heat your home’s air. If you’re wondering how to check this component, start by opening the front cover panel on your furnace. You’ll see a flame if the pilot light is ignited.

This flame should always burn a bright blue color. You should contact our team of technicians if the flame is a different color, as it signals an issue with your system.

Dirty Air Filter

A clogged air filter can cause many HVAC issues, including improper heating. We recommend changing the air filter in your heater every one to three months. If you notice that your filter is dirty, make sure to replace it so hot air can effectively circulate throughout your home.

Damaged Ductwork

Your air ducts transport warm air around your home. Occasionally, debris can obstruct airflow within the ducts, while cracks and other damage may lead to air leakage. Damaged ductwork is hard to detect on your own, so you’ll need to contact a professional to address the issue.

Wrong Thermostat Settings

If your thermostat is set to “ON” instead of “AUTO,” you may notice that your vents periodically blow out cool air instead of warm air. When your thermostat is turned “on,” it signals your furnace to constantly blow air throughout the home, even when the set temperature has been reached.

If you don’t want your unit to blow when it isn’t actively heating your home, make sure to switch the thermostat to the automatic setting.

Dirty Flame Sensor

Some gas furnaces have flame detectors, which are meant to detect a flame on the burners. If the sensors don’t sense fire within ten seconds of the heat switching on, it will shut down the system to prevent a gas leak. However, a sensor covered in dirt and grime may not be able to sense a flame, shutting down a system that is working properly.

How To Fix A Faulty Heater

After assessing the condition of your heater, you’ll need to decide how to remedy the problem. Although some issues are easy to fix on your own, others require professional assistance. For example, you can replace the air filter and reset the thermostat by yourself, but replacing a flame sensor or pilot light requires the skills of a professional.

Our technicians are prepared to determine the source of the problem with your heating system. With our extensive knowledge and years of experience, you can trust us to handle extensive issues with your system.

Schedule Heater Repair With Thayer Air Conditioning Today!

No one deserves to brave the cold without a consistent source of heat. If your heater isn’t working properly, you need help from an experienced HVAC technician. Thayer Air Conditioning is the company to call for all your New Braunfels furnace needs. Contact us today to schedule an appointment!