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

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16y ago

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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.


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 my furnace blow cold air instead of warm air?

Your furnace may be blowing cold air instead of warm air due to issues such as a malfunctioning thermostat, a clogged air filter, a faulty pilot light, or a problem with the heating element. It is recommended to check these components and consult a professional if needed to diagnose and fix the problem.


Why does your central air unit blow cold air for only a few minutes then blows warm air?

why does ac blow warm air? why does ac blow warm air?


Why does forced hot air furnace blow cold air before it blows warm?

The reason for this is because the furnace has not warmed up yet. The blower kicks on the same time the burner lights. However the furnace does not go into "high fire" until after a period of about 10 min. After this stage is when you will really begin to feel the warm air.


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 is my gas furnace blowing cold air instead of warm air?

Your gas furnace may be blowing 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 a faulty heating element. It is recommended to have a professional HVAC technician inspect and repair the furnace to resolve the issue.


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 is my electric furnace blowing cold air instead of warm air?

Your electric furnace may be blowing cold air instead of warm air due to issues such as a malfunctioning heating element, a faulty thermostat, or a clogged air filter. It is recommended to check these components and consult a professional if needed to diagnose and fix the problem.


Why does the home gas furnace blow cold air?

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