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Perhaps the pilot light is out and the gas has been turned off at the valve.

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17y ago

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Why does a gas furnace only blow cold air?

Because you set it that way


Why does gas furnace blow cold air?

because you got to light it....commen mistake


Why does my furnace blow cold air and then hot air intermittently?

Your furnace may be blowing cold air and then hot air intermittently due to a malfunctioning thermostat, a clogged air filter, or issues with the furnace's ignition system. It is recommended to have a professional HVAC technician inspect and repair the furnace to resolve the issue.


Why would a furnace blow cold air instead of warm air?

A furnace may blow cold air instead of warm air due to issues such as a malfunctioning thermostat, a clogged air filter, a problem with the pilot light or ignition system, or low fuel supply. It is important to troubleshoot and address these issues promptly to restore the furnace's proper functioning.


Why does the furnace blow cold air instead of warm air?

The furnace may blow cold air instead of warm air due to issues such as a malfunctioning thermostat, a clogged air filter, a problem with the pilot light or ignition system, or low fuel supply. It is important to troubleshoot and address these issues promptly to restore the proper functioning of the furnace and ensure it blows warm air.


Do you need a cold air return on your furnace?

YES! If you do not have a cold air return on your furnace, you will have much higher heating bills as you will not be circulating the cold air from your home back to the furmace to be heated again.


Why does the blower take 2 minutes to start on forced air furnace?

There is a delay on the fan to allow the furnace to get hot so as not to blow cold air into the home at start up. There is also an `OFF` delay, where the fan runs for a minute or so after the flame shuts off. This is to cool down the furnace.


Furnace only blow cold air?

If the furnace only blows cold air the pilot light may be out. It may also be a fuse that has blown. However, you may need to contact a licensed electrician to find the problem.


Why does the fan on my warm air furnace blow cold air?

Either the fan is set at too high a speed or the burner did not light.


Can a thermostat cause heater in house to blow cold air?

No, not if it's on a heat setting. Most home thermostats have a "Fan" setting that will blow cold air if the attic is cold.


Why does your electric furnace blow cold air only sometimes?

it may blow cold air due to the fact that the heat anticipator on your thermostat may be set to long. you can change useing your owners manual for your thermostat but you should have a service tech do it


Does not having a cold air return in your home cause health issues?

Probably not. The issue is that your furnace needs several cold air returns thru the house to work efficiently and avoid damage to the furnace.