Other air conditioning companies told me either that central air could not be installed in my house because there was not enough room for an air handler and ductwork, or that I would need more than one system. R&M said a single system to serve all three levels could be installed, and that is exactly what they did. This involved running ductwork throughout the house, which they were able to do above the ceilings and through a few closets without having to cut into any of the rooms. And, the work was neat and professional. My only regret is that I didn't have them install central air some time ago. read more