Air Conditioning and Coolant
Heating Ventilating and Air Conditioning

What should the temperature of air from the heat vents be?


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Wiki User
2015-12-05 18:19:32
2015-12-05 18:19:32


COLD TO HOT or if you want to be technical between 62+- to 92 +- Fahrenheit on average. if its too cold the heater obviously isn't working, but may I suggest first looking at your heater controls to ensure the temperature dial is set to warm (THE RED PART OF THE CONTROL)


When trying to cool a typical house, the average central AC will only decrease the temperature by about 20 degrees. For example, when it is 100 degrees outside, the inside will typically cool to about 80 at best. However, in order to achieve the 80 degrees inside, the air coming out of the vent should be 45-55 degrees.

The temperature coming directly out of the vent is different than the ambient temperature of the house. The air coming directly from the vent should be 45-55, however this will not be the temperature in your home.

If using a thermometer stuck in the vent, and the blower fan on a medium speed, in the full cold position with AC on vent, temperatures should be between 40-50 degrees F. In the full heat position vent temps should be at least 140 degrees F.


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On the vents closest to the main unit it should read around the same temperature that the thermostat is set to after its been running and then as the venting increases the temperature should be less, between 2 to 10 degrees different depending on how well the ducting is in the attic........

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Whatever it is set to on your heater's control keypad.

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normally 15to 20 degree split between return air and discharge..

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Heating vents should be located near the floor since hot air rises. If the heating vents are located near the ceiling the heat would stay there and not warm the room.

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Depends on the ambient air temperature, humidity level, and type of refrigerant used.

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