Air COnditioning question

[Lynne]

We have troubles with the airconditioning..or I think it's troubles. My daughter's room becomes very stuffy when closed off form the rest of the house. There seems to be good ariflow in and there is a reurn aurflow under the door and such, my husband now informs me the room next door has a similar problem (sometimes he sleeps in the guest room, I never have) The AC guys see nothing wrong, the cross over is good, and such. He suggested I turn the central AC to fan ON rather then AUTO. Not a good test as last night was cool, but her room seemed better this AM.
WIll this cause alot fo wear and tear on the equipment, won't it make my electric bill nasty?

[rmurray]

Seems like your a/c only runs some of the time...this allows a smaller room to get stuffy...

Running the a/c fan all of the time should not hurt it and costs very little in energy...The movement of the air distrubutes it evenly through the home...Has s similar effect as a whole house cieling fan..

Now...your hubby sounds pretty smart...How could he possibly sleeping in the guest room..........

[Lynne]

What can I say, I'm a blanket hog
Thanks, I feel better. I never used the fan in anything other then auto in all these years and if it does the trick I'm all for it.

[jgn]

I was told by a HVAC guy to not run the fan all the time but I cannot remember why. It had something to do with the A coil.

[Dan]

The only harm running the fan all the time is that it would raise the humidity because when the ac shuts off, the fan will continue to evaporate some of the moisture that had condensed onto the evaporator coil. There are some new Carriers that run the fan for a minute or two after the refrigerant stops flowing but they only do that to get the last remaining bit of cooling from the coil so they can boast higher efficiency ratings. As a matter of fact, the slower you run the air over the coil, the more moisture you squeeze out of the air. But that's another story. As far as an 'A-coil' goes, that only describes the shape of the coil and you only find 'A-coils' in split systems and hardly ever in package units such as are on mobile homes.

Dan