Abstract: An apparatus and method are provided for a pocketed spring seating unit to be incorporated into a couch or sofa. The pocketed spring seating unit comprises a spring array that includes a multiplicity of pocketed springs disposed in a spring layer arrangement. Each of the pocketed springs comprises an independently operable coil spring covered with a flexible wrap. An envelope comprising insulating materials surrounds the spring array. The spring array and the envelope are attached to a rigid platform that is disposed below the envelope. The rigid platform has a length and width that match a seating area of the couch or sofa and is configured such that the pocketed spring seating unit may be laid into an upholstery frame of the couch or sofa. An exterior cloth material overlays one or more exterior surfaces of the pocketed spring seating unit.