This is a pretty wide ranging question, but we'll offer some discussion as thought starters. The central air units installed in the 80s were "split systems," with the condenser and compressor units installed in the belly areas, and the evaporators installed upstairs, blowing cooled air directly into the interior. Typically, little or no ductwork is used. The noise levels are comparable to roof units. An advantage of central air is the clean roofline, giving the coach a nice, tidy appearance. A disadvantage is increased maintenance, partially because of connections for the freon lines that run from the underfloor compressor/evaporator units and the evaporators upstairs. In addition, availability of repair parts have become a problem after some 15 years, while roof airs are virtually self-contained, allowing an entire obsolete unit to be easily replaced with a current model. It is not very practical to replace an older roof air with a central air unit, although not necessarily impossible. Simply a question of time, effort, and money.
__________________
Hopefully this helps.
|