An air conditioner unit may include a housing, an outdoor heat exchanger assembly, an indoor heat exchanger assembly, a compressor, and a sterilization light assembly. The housing may define an indoor portion and outdoor portion. The housing may further define an exhaust outlet downstream from the indoor portion to exhaust air. The outdoor heat exchanger assembly may be disposed in the outdoor portion and include an outdoor heat exchanger. The indoor heat exchanger assembly may be disposed in the indoor portion and include an indoor heat exchanger and an indoor fan. The compressor may be in fluid communication with the outdoor heat exchanger and the indoor heat exchanger to circulate a refrigerant between the outdoor heat exchanger and the indoor heat exchanger. The sterilization light assembly may be disposed within the indoor portion below the indoor fan and directed forward to transmit an ultraviolet light emission within the indoor portion.

An air conditioner unit may include a housing, an outdoor heat exchanger assembly, an indoor heat exchanger assembly, a compressor, and a sterilization light assembly. The housing may define an indoor portion and outdoor portion. The housing may further define an exhaust outlet downstream from the indoor portion to exhaust air. The outdoor heat exchanger assembly may be disposed in the outdoor portion and include an outdoor heat exchanger. The indoor heat exchanger assembly may be disposed in the indoor portion and include an indoor heat exchanger and an indoor fan. The compressor may be in fluid communication with the outdoor heat exchanger and the indoor heat exchanger to circulate a refrigerant between the outdoor heat exchanger and the indoor heat exchanger. The sterilization light assembly may be disposed within the indoor portion below the indoor fan and directed forward to transmit an ultraviolet light emission within the indoor portion.

A single-package air conditioning appliance includes a housing defining an outdoor portion and an indoor portion. An outdoor heat exchanger assembly is disposed in the outdoor portion. The outdoor heat exchanger assembly includes an outdoor heat exchanger and an outdoor fan. An indoor heat exchanger assembly is disposed in the indoor portion. The indoor heat exchanger assembly includes an indoor heat exchanger and an indoor fan. A compressor is in fluid communication with the outdoor heat exchanger and the indoor heat exchanger to circulate a refrigerant between the outdoor heat exchanger and the indoor heat exchanger. The single-package air conditioner unit also includes a make-up air module. The make-up air module extends between the outdoor portion of the housing and an outside of the housing. The make-up air module includes a plurality of make-up air fans.

A single-package air conditioning appliance includes a housing defining an outdoor portion and an indoor portion. An outdoor heat exchanger assembly is disposed in the outdoor portion. The outdoor heat exchanger assembly includes an outdoor heat exchanger and an outdoor fan. An indoor heat exchanger assembly is disposed in the indoor portion. The indoor heat exchanger assembly includes an indoor heat exchanger and an indoor fan. A compressor is in fluid communication with the outdoor heat exchanger and the indoor heat exchanger to circulate a refrigerant between the outdoor heat exchanger and the indoor heat exchanger. The single-package air conditioner unit also includes a make-up air module. The make-up air module extends between the outdoor portion of the housing and an outside of the housing. The make-up air module includes a plurality of make-up air fans.

An air conditioning and heat pump tower includes a main casing, a plurality of connecting pipes, a compressor, a front heat exchanger, a rear heat exchanger, a fan unit, and an energy efficient arrangement. The energy efficient arrangement includes a first pre-heating heat exchanger supported in a front compartment of the main casing, and positioned between an outdoor air intake opening and an outdoor heat exchanging portion of the front heat exchanger. The air conditioning and heat pump tower may be operated between an air conditioning mode for absorbing heat from the indoor space, and a heat pump mode for producing heat to the indoor space. A predetermined amount of ambient air may be drawn through the outdoor air intake opening and may be pre-heated by the energy efficient arrangement before delivering to the indoor space.

A single-package air conditioning appliance includes a housing defining an outdoor portion and an indoor portion. An outdoor heat exchanger assembly is disposed in the outdoor portion. The outdoor heat exchanger assembly includes an outdoor heat exchanger and an outdoor fan. An indoor heat exchanger assembly is disposed in the indoor portion. The indoor heat exchanger assembly includes an indoor heat exchanger and an indoor fan. A compressor is in fluid communication with the outdoor heat exchanger and the indoor heat exchanger to circulate a refrigerant between the outdoor heat exchanger and the indoor heat exchanger. The single-package air conditioner unit also includes a make-up air module. The make-up air module extends between the outdoor portion of the housing and an outside of the housing. The make-up air module includes a plurality of make-up air fans.

A single-package air conditioning appliance includes a housing defining an outdoor portion and an indoor portion. An outdoor heat exchanger assembly is disposed in the outdoor portion. The outdoor heat exchanger assembly includes an outdoor heat exchanger and an outdoor fan. An indoor heat exchanger assembly is disposed in the indoor portion. The indoor heat exchanger assembly includes an indoor heat exchanger and an indoor fan. A compressor is in fluid communication with the outdoor heat exchanger and the indoor heat exchanger to circulate a refrigerant between the outdoor heat exchanger and the indoor heat exchanger. The single-package air conditioner unit also includes a make-up air module. The make-up air module extends between the outdoor portion of the housing and an outside of the housing. The make-up air module includes a plurality of make-up air fans.

A system and method reduce a concentration of viable microorganisms, including but not limited to the 2019 novel (new) coronavirus that causes the illness coronavirus disease 2019 (COVID-19), in air in a workspace by over 80% with a single pass of air through the system. A heater heats air drawn from the workspace and a desiccant dehumidifier further heats air from the heater. The heater and desiccant dehumidifier decontaminate the air to kill or inactivate the microorganisms so that air returned to the workspace from the system has a reduced concentration of viable microorganisms.

Apparatus for tensioning pliable airducts while supporting internal HVAC components are disclosed. An airduct system includes an airduct having an elongate tubular wall of a pliable material. The airduct system further includes a frame disposable inside the tubular wall of the airduct, the frame including a hoop to support the tubular wall in a radial direction, the hoop to define an opening to provide passage of a flow of air along a length of the airduct. The airduct system also includes an HVAC component disposable within the tubular wall of the airduct, the HVAC component to be attached to and supported by the frame inside the airduct, the HVAC component to adjust a characteristic of the air.

Apparatus for tensioning pliable airducts while supporting internal HVAC components are disclosed. An airduct system includes an airduct having an elongate tubular wall of a pliable material. The airduct system further includes a frame disposable inside the tubular wall of the airduct, the frame including a hoop to support the tubular wall in a radial direction, the hoop to define an opening to provide passage of a flow of air along a length of the airduct. The airduct system also includes an HVAC component disposable within the tubular wall of the airduct, the HVAC component to be attached to and supported by the frame inside the airduct, the HVAC component to adjust a characteristic of the air.