After some discussion with my dad I decided to post a question here regarding several topics. We live in Dallas.
1. He believes that it is best to leave the central fan running all of the time. His claim is that doing this will result in the heat or a/c cycling on less. Does running the fan all of the time have any impact?
2. Any time he leaves the house for work he puts the a/c very high and then when he returns from work cranks it down. I told him he was better off leaving it alone, that it ends up running longer when he cranks it down than it would have had he left it alone.
3. He also refuses to use ceiling fans, except for the room he is in. I said that, in my opinion, it is best to leave ceiling fans running which helps circulate air throughout the house.
Thanks for your comments.