I'm a homeowner looking to replace my old AC system, and I'm getting conflicting information from different contractors on the benefit of installing a variable speed air handler. One contractor says it saves on energy because of the fact that it can draw more moisture out of the air. The other contractor says you shouldn't install one, because without installing more supply and possibly another return line (according to the contractor something you can't know until a month or two after its installed) it won't pull enough air across the coil to function properly? I appreciate any and all help I can get.