Abstract: A machine for forming a serpentine heat exchanger having a predetermined length from a continuously formed spine fin tubing. A supply of continuously formed spine fin tubing is directed to a forming and bending head in predetermined increments where it is bent in alternate directions about a central axis to form the serpentine heat exchanger. Prior to the bending action the portion to be bent is deformed into a cross section having its major axis parallel with the longitudinal axis of the tube and perpendicular to the central axis. The following bending operation causes the tube diameter across the major axis to decrease as the wall in the area of the outer curve migrates radially inwardly due to its failure to elongate sufficiently, in effect, the cross sectional area in the completed bent portion is substantially equal to the cross sectional area of the tube before the deforming and bending operation.

Abstract: The present invention provides an air conditioning system for a mobile home. The system includes securing a mounting means to the support structure of the mobile home and an air conditioning unit that is adapted to be removably secured to the mounting means. When installed on the mounting means, the air conditioning unit is aligned to deliver conditioned air into the interior of the mobile home through its built-in air distribution system.