Are you feeling a cold draft coming from your furnace? If so, you’re not alone. This is a common problem that many homeowners face, and it can be caused by various issues. In this article, we’ll discuss some of the most common reasons cold air is coming from your furnace and what you can do to fix it.
- Blocked Air Filter
A blocked air filter is one of the most common reasons your furnace blows cold air. A blocked air filter prevents the furnace from taking in enough air, which affects the temperature of the air flowing from the furnace. As a result, the air coming out of the furnace is cooler than it should be. If you haven’t cleaned or replaced the filter in your furnace in a while, then it’s likely that your filter is blocked.
To prevent this from happening, make sure to check your air filter regularly and clean or replace it as necessary. This will ensure that your furnace is not starved of air, allowing it to produce the right amount of heat. If you’re unsure how to do this, consult your furnace manual or contact an HVAC professional for guidance. These steps will help you ensure that your furnace is always running optimally and producing the right amount of heat.
- Damaged Pilot Light
A damaged pilot light can be one common reason cold air comes from your furnace. A pilot light is a small flame used to light a furnace’s burner. If the pilot light is damaged or not functioning properly, the furnace will not ignite and will not produce any heat. This will cause cold air to come from the furnace. To check if the pilot light is damaged, you can look inside the furnace and inspect the pilot light. If it is not lit, then it could be the cause of the cold air.
In order to fix the damaged pilot light, you will need to first shut off the gas supply to the furnace. Then you will need to relight the pilot light by following the instructions in your furnace’s user manual. If the pilot light does not stay lit, you may need to contact a professional to repair the pilot light or replace it. Once the pilot light is fixed, the furnace should start producing heat, and the cold air coming from the furnace should stop.
- Dirty Flame Detector
A dirty flame detector is one of the most common reasons why cold air is being blown by your furnace. The flame detector is a safety device that monitors the flame from the burners. When the flames are too weak or not detected, the furnace shuts off to prevent a potentially dangerous situation. If the flame detector is clogged with dust or dirt, it can prevent the burners from igniting properly, resulting in cold air coming from the furnace instead of warm air.
To clean a flame detector, you need to turn off the power to the furnace and then remove the detector from the unit. You should then use a soft brush to gently remove any dirt or debris that is clogging the detector. Once the detector is cleaned, you can reattach it to the furnace and turn the power back on. This should remedy the issue of cold air coming from the furnace and allow it to heat the home properly.
Final Thoughts
Cold air coming from your furnace can be caused by a variety of different issues. In most cases, these issues can be fixed with some basic troubleshooting and maintenance. However, if these issues are not resolved, it is best to contact a professional for assistance, as more serious problems could be at play. Taking care of your furnace and performing regular maintenance is the best way to ensure your furnace remains in good working condition.
Fix your furnace with the help of Always On Green Home. We are HVAC contractors that provide furnace repair in Brooklyn. With many years of experience and a wealth of industry knowledge to boot, our team of professionals will use an extensive range of approaches for the projects we take on. Get in touch with us today!