Provided is an air conditioning apparatus. The air conditioning apparatus includes an outdoor unit through which a refrigerant circulates, a plurality of indoor units through which water circulates, the plurality of indoor units comprising a first indoor heat exchanger and a second indoor heat exchanger, and a heat-exchange device configured to connect the outdoor unit to the indoor unit, the heat exchange device including a first heat exchanger and a second heat exchanger, in which the refrigerant and water are heat exchanged with each other. The heat exchange device includes a first inflow tube extending from the first indoor heat exchanger toward the first heat exchanger to guide a flow of the water, a second inflow tube extending from the second indoor heat exchanger toward the second heat exchanger to guide the flow of the water, a first pump provided in the first inflow tube and a second pump provided in the second inflow tube. When a portion of the indoor unit performs a heating operation, and the other portion of the indoor unit performs a cooling operation, when a total capacity required for the indoor unit is equal to or less than a set capacity, the first pump or the second pump operates, and when the total capacity required for the indoor unit exceeds the set capacity, the first pump and the second pump operate.

An HVAC system is provided. Embodiments of the present disclosure generally relate to heat exchangers having tubing with a reduced diameter compared to traditional systems. In one embodiment, a ducted HVAC system comprises an outdoor heat exchanger with tubing that has an outer diameter of eight millimeters (8 mm) or less and an indoor heat exchanger with tubing that has an outer diameter of nine millimeters (9 mm) or less. Additional systems, devices, and methods are also disclosed.

Improved systems for heating and cooling a space may include a heating and cooling unit for providing heating and cooling functions mounted inside a housing assembly and a display unit mounted to the housing assembly. A control unit may be coupled to the heating and cooling unit and the display unit. The control unit may be operative to cause an image or video associated with heat be displayed on the display unit when the heating and cooling unit is in the heating mode of operation and to cause an image or video associated with coolness be displayed on the display unit when the heating and cooling unit is in the cooling mode of operation. The control unit may be coupled to a server that enables remotes operation of the system via a client application. Other implementations also may be provided.

An air-conditioner having a fluid tank configured to connect an indoor unit of the air-conditioner with an outdoor unit of the air-conditioner. The fluid tank comprises a first chamber, and a second chamber. The first chamber comprises a high-pressure inlet and a high-pressure outlet. The second chamber comprises a low-pressure inlet, a low-pressure outlet and a low-pressure filling opening.

An air-conditioner having a fluid tank configured to connect an indoor unit of the air-conditioner with an outdoor unit of the air-conditioner. The fluid tank comprises a first chamber, and a second chamber. The first chamber comprises a high-pressure inlet and a high-pressure outlet. The second chamber comprises a low-pressure inlet, a low-pressure outlet and a low-pressure filling opening.

An installation device configured to hold a window mounted split air-conditioner. The installation device comprises a support structure configured to be mounted on the window sill, and a mechanism for guiding the outdoor unit from a position inside the window opening to a position outside the window opening, and holding the outdoor unit in that position for use.

An installation device configured to hold a window mounted split air-conditioner. The installation device comprises a support structure configured to be mounted on the window sill, and a mechanism for guiding the outdoor unit from a position inside the window opening to a position outside the window opening, and holding the outdoor unit in that position for use.

An environmental control unit for providing heated or cooled air to an enclosed environment, such as a building structure or temporary shelter. Air passes through the environmental control unit and the air is heated or cooled by a temperature control system of the environmental control unit. The heated or cooled air is provided to the enclosed environment.

A climate control system coupled within an opening of a structure, with the opening separating an internal area within the structure and an exterior area external to the structure, the climate control system straddling the opening. The climate control system includes: an interior unit disposed at the opening within the internal area; an exterior unit disposed at the opening in the exterior area; and a connector between the interior unit and the exterior unit that extends through the opening, the connector including: a circulation hose that extends through the opening to connect the exterior unit and the interior unit, and a controls system configured to operate the interior unit and the exterior unit.

A climate control system coupled within an opening of a structure, with the opening separating an internal area within the structure and an exterior area external to the structure, the climate control system straddling the opening. The climate control system includes: an interior unit disposed at the opening within the internal area; an exterior unit disposed at the opening in the exterior area; and a connector between the interior unit and the exterior unit that extends through the opening, the connector including: a circulation hose that extends through the opening to connect the exterior unit and the interior unit, and a controls system configured to operate the interior unit and the exterior unit.