there are two common mistakes in many modern implementations of central air. the first is the hardest to get done as most hvac companies resist, having the exh

there are two common mistakes in many modern implementations of central air. the first is the hardest to get done as most hvac companies resist, having the exhaust not be at the exact end of the the pipe. the pipe should end just beyond it. the second is not having a return or sufficient returns in each room. if you are stuck with a central return then make sure doors are open if the room has no pass through vent to the hall with the central return; at most the master bedroom will have pass through vents to a hall so the door can remain closed. the only omission from my current home is an attic fan but building codes precluded it at the time but I hear I can do it now if I want. still I find even with central air a lot of comfort can be found by having a dehumidifier. down in the south it is not uncommon to wake to humidity higher than the temperature which makes it feel sticky and uncomfortable. with regards to cooling needs and such, we simply have changed what we want and want we are willing to tolerate. its not a bad thing, we just have to find efficient ways to have it.