Abstract: An interactive method for on-line selection of an air conditioning product includes the steps of providing a database storing a plurality of air conditioning product identifiers and at least one corresponding product characteristic; interactively obtaining intended use information from a consumer for a desired air conditioning product; equating the intended use information with an intended use product characteristic; identifying a suitable product having the at least one product characteristic meeting the intended use product characteristic; and identifying the suitable product to the consumer.

Abstract: A process for activating an air conditioning unit includes checking the unit's compressor for possibly being in a recovery status condition. A message is displayed on a control panel as long as the unit's compressor remains in this condition. The display includes an indication as to the time remaining before the compressor will be activated.

Abstract: A setback control for an HVAC system is selectable by depressing a switch on a control panel associated with a programmed microprocessor. The programmed microprocessor is operative to thereafter change the setpoint temperature by a predefined amount each hour until a predetermined number of hours have passed. The set point temperature is thereafter held for a further hourly count before being returned to the starting setpoint temperature. The directional change in setpoint temperature is a function of whether the HVAC system is in a heating or cooling mode of operation.