When the cold winter months hit, you depend on your furnace to keep your home warm and comfortable. So, when you turn on your furnace and it starts blowing cold air instead of warm, it can be frustrating and confusing. In this blog, we’ll discuss some of the potential issues that could be causing your furnace to blow cold air and what you can do to fix it.
The first thing you should do if your furnace is blowing cold air is to check your thermostat.
Make sure it’s set to “heat” instead of “cool.” It may seem obvious, but sometimes this simple mistake can be the cause of the problem. If your thermostat is set correctly and your furnace is still blowing cold air, it’s time to move on to other potential issues.
A malfunctioning pilot light is a common reason why a furnace may blow cold air.
The pilot light is responsible for igniting the gas that heats your home, so if it’s not functioning properly, your furnace won’t be able to generate heat. If you suspect this is the issue, try relighting the pilot light according to the manufacturer’s instructions. If it still doesn’t work, it’s time to call the professionals at Jack Harrison Heating & Air.
Another potential issue is a faulty thermocouple.
The thermocouple is responsible for detecting whether the pilot light is on or off. If the thermocouple is malfunctioning, it may be sending the wrong signal to your furnace, causing it to blow cold air. This is another situation where you’ll need to call in a professional to diagnose and fix the issue.
A clogged air filter can also cause your furnace to blow cold air.
When an air filter becomes clogged with dirt and debris, it restricts airflow, which can cause the furnace to overheat and shut off before it has a chance to heat your home. In this situation, simply replacing the air filter could solve the problem.
Finally, a problem with the blower motor can also cause your furnace to blow cold air.
The blower motor is responsible for circulating heated air throughout your home, so if it’s not functioning properly, you may notice that your furnace is blowing cold air instead of warm. This is another issue that will require professional attention to diagnose and fix.
There are several potential issues that could be causing your furnace to blow cold air instead of heat. While some of these issues can be fixed with simple DIY solutions, others will require the attention of a professional HVAC technician. If you’re experiencing this problem, don’t hesitate to call the pros at Jack Harrison Heating & Air for a diagnostic. We’ll get your furnace running properly and your home warm and comfortable in no time.