Should I turn my furnace off if its blowing cold air?

If your furnace has to overcompensate, it might overheat. When a furnace overheats, safety sensors kick in and turn it off and then blow cold air to cool your furnace. If you notice cool air blowing and/or your furnace frequently turning off, a simple air filter replacement may do the trick.

Why does my furnace blower fan stop working?

The function of the blower fan is to blow air across the furnace’s heating coils and disperse that warmth through the air ducts. If the blower fan stops working, you have a more serious problem at hand.

What to do when your furnace won’t turn off?

Turn your thermostat’s fan to AUTO or OFF. This will help you make the most of your troubleshooting later on when it comes to your blower motor. If your furnace is still running hot after doing this, you will be able to rule out some common culprits. Finally, you should check the wiring of your thermostat.

Is it normal for the furnace to blow cold air?

It is usual for cold air to enter the heating system until it is warm, and then for warm air to continue to blow after the air heats up. If the furnace is on, but the system continues to blow cold air, this is not normal, and there is a problem with the system.

Can a gas furnace pilot be turned off?

Those who have a furnace that heats the house will have a pilot that must be turned on in order to light the furnace quickly and allow it to heat the home. Like a gas water furnace, the pilot of a gas furnace can shut off for several reasons. If the gas pressure is low, the pilot may shut down.

Why is my furnace not blowing hot air?

Furnace Not Blowing Hot Air – Problems & Solutions The reason your furnace is not blowing hot air could be a setting on the thermostat, a circuit breaker, or a clogged air filter. Other potential problems include a bad blower fan or limit control switch.

Why is your furnace blowing cold air?

Your furnace may be blowing cold air because the filter is too dirty. A dirty air filter blocks airflow over the furnace’s heat exchanger, causing it to overheat. When overheating, your furnace can trip a high limit switch, causing the furnace burners to shut off so that the heat exchanger does not crack.

Why is my HVAC blowing cold air?

One of the common reasons your heater is blowing cold air is actually because of your thermostat. No matter what type of HVAC system you have, you should check your thermostat first. Check the thermostat batteries, check the fan switch, and make sure the temperature is high enough.