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Posted by Mikepier on June 21, 2008, 10:12 am
> Besides the runing the fan 24/7 (which has been recommended to me by
> more than one HVAV contractor) there is also a need to rebalance
> (unbalance?) the system when you switch from heating to cooling. I
> close just about all of dampers in the ductwork for the basement and
> first floor ducts during the cooling season.
>
> This forces the cold air to the registers on the second floor where it
> cools the bedrooms and bathrooms and then naturally sinks to the lower
> levels.
In addition to opening up the upper supply vents and closing the lower
ones, you should do the same for the return grilles. By opening up the
upper ones and closing the lower ones, you are pulling more heat and
humidity out of the room. And since hot air naturally rises, it makes
sense to have th upper ones do most of the work.
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