Quote:
Originally Posted by retiredguy123
That is not correct. Yes, hot air rises. So, you may measure a slight temperature difference between the floor and the ceiling. But, more importantly, in the summer, the temperature in the attic will be over 100 degrees, while the temperature below the ceiling will be about 75 degrees or so. The heat transfer will be downward from the hot attic to the living space, and will cause your air conditioner to run more often. In the winter, the attic will be colder than the living space and the heat transfer will be upward from the living space to the attic. In both cases, you want to slow down the rate of heat transfer between the living space and the attic. The more insulation you have between the attic and the conditioned living space, the slower the heat transfer process will be and the less heating or cooling you will need.
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Would attic exhaust fans accomplish the same thing?
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