Abstract: An improved modular air conditioning apparatus utilizing heat pump assemblies and capable of heating or cooling adjacent room areas separated by a common wall partition. The apparatus comprises a first housing compartment and a second housing compartment which are supported by vertical riser ducts, each such housing compartment disposed adjacent to one of the room areas and characterized by three access sides, and one non-access side. One access side in each housing compartment is selected as a component access side. Adjacent non-access sides of each housing compartment define a vertical riser duct. A heat pump assembly is disposed in each housing compartment and a blower draws air through the condenser-evaporator thereof. All working components are removable through access ports provided by the removal of intake grille assemblies disposed at the component access side selected for each housing compartment placement.

Abstract: An improved modular air conditioning apparatus featuring selective panel enclosures, plug-in controls, orientation selection and servicing capability for the simultaneous provision of air conditioning to a first room area and a second room area, the apparatus disposable between wall partitions or the like separating the first and second room areas. The apparatus comprises a frame assembly having a first open box frame and a second open box frame, each having three access sides. A blower and heat exchanger are disposed in an operating section of each of the open box frames, and these are removable through an access port provided by the removal of an intake grille disposed at one of the access sides on each of the open box frames. Riser pipes disposed in a vertical riser duct connect with other like units and supply hot or chilled water to heat exchangers.

Abstract: An improved modular air conditioning apparatus featuring selective panel enclosures, plug-in controls, orientation selection and servicing capability, the apparatus comprising an open box frame having three access sides which are each selectable for enclosure or component orientation. A blower and heat exchanger are disposed in an operating section of the frame, and these are removable through an access port provided by the removal of an intake grille disposed at one of the access sides. Riser pipes disposed in a vertical riser duct connect with other like units and supply hot or chilled water to the heat exchanger. A plug-in control assembly senses an external temperature and controls the operation of the blower which draws air through the heat exchanger and blows the air into a plenum section of the frame from which the air exits through an outlet grille.