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No air flow upstairs

I live in a townhouse and the downstairs is nice and cool when running the air, however, the upstairs is HOT. There is no airflow coming up the vents..... I read that you can turn off the downstairs vents, but they are on the ceiling (look like smoke alarms). I don't know what to do! Very uncomfortable upstairs. The pipes are cold, and I can feel the cold air downstairs, so I don't think its the unit itself, just no flow going up the vents.

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Cold air is denser than hot air, so is harder to move. All vents have some mechanism to regulate flow, so close all of the downstairs vents. Check to see if your furnace fan motor has more than one speed, & set it on maximum. Keeping the fan on all the time will help as well. If all else fails, you may need a more powerful fan motor.

Posted on Jul 15, 2007


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Posted on Jan 02, 2017


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