Ceiling Fans: Good or Bad for Flips?

[Coleman Nelson]

When flipping properties, what is your opinion of having ceiling fans?  I've heard most of the cons relate to the design and look of the home.  I've heard most of the pros relating to people like having a ceiling fan.

Can anyone weigh in on their experience of whether ceiling fans add or take away value in a home?  Also, if you use ceiling fans, what rooms do you use them in?