Question about air conditioning.

[Curmudgeoness]

3. I have heard both cool it and close it off as the right way to do it.

The "cool it" crowd say that the warm walls and air from under the doors will make the A/C would harder to try to cool the area around that room. The "close it" crowd will say don't waste the A/C on a room you are not using.

I have never heard the faster air flow through the house makes it cooler. If that were true, it would seem to be best to close everything but one or two rooms off to make it flow really fast. I do know that in the office I work in, the installed all new ductwork and vents, and the vents cannot be closed off, only opened full blast or could close about halfway. I wanted a vent that could be completely closed off because I hate A/C blowing on me, and they said that the A/C would not work as well if they had vents that would close. I don't know why.

If you aren't sure, try testing it. See if opening the vent in there makes the A/C work longer, or your bills to go higher, or if keeping it closed off is better. Since there is contradictory opinions out there, that is the best we can do.