Is your furnace blowing cold air?
A problem with the flame detector, gas supply, air filter, pilot light, or condensate lines can cause your furnace to spew chilly air in your home. Many of these problems can be readily resolved by cleaning or replacing components in the gas furnace on your own. Let’s look at the many options for resolving these concerns on your own.
Why Isn’t Your Furnace Producing Warm Air?
1. The pilot light is damaged
If your furnace is blowing chilly air, make sure the pilot light on your gas system is lit. Your gas furnace’s pilot light is responsible for lighting the burners and ensuring that your system can generate heat. On older gas furnaces, problems with the pilot light are prevalent. To relight the pilot, we recommend using the instruction kit that comes with your furnace.
What to do?
Locate and reset the pilot light assembly
The first step in relighting the pilot light on your own is to locate the pilot assembly and its reset toggle. The reset toggle is normally found near the furnace’s bottom. If you’re having trouble identifying the pilot light assembly and reset switch, see your instruction kit. To disable the gas, locate the reset toggle and slide it to the off position.
Toggle the Reset Switch to the On position
To allow excess gas to depart the chamber of your furnace, we recommend waiting a few minutes before turning the reset switch to the On position. To ensure gas can be delivered to the pilot light, set the reset toggle to the Pilot setting.
After you’ve altered this setting, find your furnace’s reset button and press it while lighting a match in front of the pilot light. The pilot light will produce a flame that you can see. You must release the reset button once you have successfully started a flame.
Congratulations! Your furnace should turn on now that you’ve properly re-lit the pilot light, to keep your house warm. Give our team a call if you need help re-lighting your pilot light through researching heating and cooling services.
2. Grime and dirt on the flame detector
Other gas furnaces do not require a pilot light to start the heating process. Flame detectors ensure the effective completion of a heating cycle in furnaces without pilot lights.
If your flame detector is covered in dust, dirt, or grime, your furnace will quickly lose heat and begin blowing chilly air. This problem can be resolved by cleaning the flame sensor on your furnace. Alternatively, you can call on our HVAC experts from heating and cooling repair services to clean the flame detector and restart the heating system.
3. Airflow is restricted by the air filter
The incoming air from your gas furnace will be blocked if the air filter in your furnace is covered in dust, grime, or soot. Long heating cycles and overheating concerns are common indicators of filthy air filters.
Your heater will blow cool air throughout your home if you have an overheating problem, make sure to contact the heating and cooling services provider for help. We recommend replacing the polluted air filter with a new one to restore the flow of warm air in your home.
Your gas furnace will no longer overheat since the new air filter will not obstruct airflow.
4. Low Gas Supply in the House
If your heater is spewing chilly air, there could be a serious problem with your home’s gas supply line. If your furnace doesn’t receive enough gas to accomplish its normal heating operation, it will turn off.
A skilled heating and cooling repair HVAC specialist is recommended for a gas furnace repair project.
5. The Condensate Lines Have Been Blocked
Have you realized that your furnace in your home isn’t working? Condensate drain lines are built into the latest state-of-the-art furnaces to help with moisture removal. If the condensate pipes become clogged, the burners will turn off and the furnace will send chilly air into your home.
6. Your Ductwork Has Been Damaged
Due to gaps and cracks in your ductwork, your furnace may be producing chilly air. Cold air from your attic enters the air ducts through these little to large apertures.
Your furnace may be blowing warm air and working well, but by the time it reaches your vents, it may be leaking. Duct sealing could make it more easier for warm air to reach the vents.
7. Instead of Auto, the thermostat is set to On
If your heater is spewing chilly air, double-check that the thermostat is set to Auto in your home. If your thermostat is set to the On position, your furnace will operate constantly throughout the day, even if it is not producing heat.
Simply set this thermostat to the Auto channel to ensure that your home’s gas furnace only runs during the normal heating process.
If your furnace is blowing chilly air in your house, give us a call to get help. We provide furnace repair and installation services, and other HVAC services including air conditioning maintenance and replacement. Call us and we’ll inspect your furnace and ducts to ensure you have warm air for the rest of the winter.