An external-air conditioning apparatus and a ventilation system are provided, the external-air conditioning apparatus includes a fin tube type heat exchanger and a housing that stores this heat exchanger. The housing includes a base body that serves as a back side of the apparatus body and a cover body that serves as a front side of the apparatus body, and the base body and the cover body are dividable and detachable in structure. The base body has a base portion, a partitioning portion, a connecting pipe portion, a heat-exchanger-holding structure portion, and a water receiving portion. The cover body is a structure in which a front wall portion and a three-side peripheral wall portion are formed integrally with each other, and a part in which the peripheral wall portion is not formed is an inlet for external air.

An adjustable mounting assembly for an outdoor unit of an air conditioning unit is disclosed. In some embodiments, the outdoor unit on the adjustable mounting assembly may be capable of moving between among multiple height positions, for example, from a higher loading position to a lower installed position. For example, in some embodiments, the adjustable mounting assembly may include a counterbalancing mechanism to facilitate the position movement of the outdoor unit. In some other embodiments, the position movement of the outdoor unit may be achieved by folding and/or unfolding of a scissor lifting mechanism.

An adjustable mounting assembly for an outdoor unit of an air conditioning unit is disclosed. In some embodiments, the outdoor unit on the adjustable mounting assembly may be capable of moving between among multiple height positions, for example, from a higher loading position to a lower installed position. For example, in some embodiments, the adjustable mounting assembly may include a counterbalancing mechanism to facilitate the position movement of the outdoor unit. In some other embodiments, the position movement of the outdoor unit may be achieved by folding and/or unfolding of a scissor lifting mechanism.

An air conditioner capable of satisfactorily preventing noise from entering an indoor space includes: an indoor unit that is fixed to a wall surface of an indoor space and houses an indoor heat exchanger; and an outdoor unit that houses an outdoor heat exchanger connected to a refrigerant circuit that includes the indoor heat exchanger. The outdoor unit includes an outside casing that is fitted into an opening formed in a building wall partitioning an outdoor space and the indoor space from each other and defines an internal space that is open to the outdoor space and isolated from the indoor space by being surrounded by a sound insulation wall, and an inside casing that is disposed in the internal space and houses the outdoor heat exchanger.

An external-air conditioning apparatus and a ventilation system are provided, the external-air conditioning apparatus includes a fin tube type heat exchanger and a housing that stores this heat exchanger. The housing includes a base body that serves as a back side of the apparatus body and a cover body that serves as a front side of the apparatus body, and the base body and the cover body are dividable and detachable in structure. The base body has a base portion, a partitioning portion, a connecting pipe portion, a heat-exchanger-holding structure portion, and a water receiving portion. The cover body is a structure in which a front wall portion and a three-side peripheral wall portion are formed integrally with each other, and a part in which the peripheral wall portion is not formed is an inlet for external air.

A mounting bracket assembly includes a support bracket, an outdoor support mounted at the support bracket and configured to be supported by a wall, and a connection member. The support bracket includes a lateral fixation member configured to be fixed to an inner side of a window frame and extending along an extension direction, and a support plate. The lateral fixation member includes a lateral extension member. The lateral extension member includes an extension bottom plate, and a first extension side plate and a second extension side plate disposed at opposite side edges of the extension bottom plate, respectively. One end of the support plate is connected to the lateral fixation member, and another end of the support plate is configured to extend outside the window frame. One end of the connection member is configured to connect to a window air conditioner, and another end of the connection member is provided in the lateral extension member and connected to the extension bottom plate.

A bracket adapted to be attached to a wall, comprises a transverse support element and at least one support bracket. The at least one support bracket has an L-shape comprising an attachment arm and a support arm. The attachment arm comprises a first end provided with fastening means to said transverse support element and a second end adapted to couple with a corresponding end of the support arm. The attachment arm comprises a first portion and a second portion. The first portion and the second portion are connected to each other by means of hinging means, suitable for allowing a rotation and a relative translation between the first portion and the second portion.

A bracket adapted to be attached to a wall, comprises a transverse support element and at least one support bracket. The at least one support bracket has an L-shape comprising an attachment arm and a support arm. The attachment arm comprises a first end provided with fastening means to said transverse support element and a second end adapted to couple with a corresponding end of the support arm. The attachment arm comprises a first portion and a second portion. The first portion and the second portion are connected to each other by means of hinging means, suitable for allowing a rotation and a relative translation between the first portion and the second portion.

A window air conditioner includes a casing including a receiving groove formed at an outer peripheral wall of the casing. The receiving groove has an open top, an open left side, and an open right side. The casing is divided into an indoor part and an outdoor part by the receiving groove. The window air conditioner further includes an indoor heat exchanger and an indoor fan arranged in the indoor part, and an outdoor heat exchanger and an outdoor fan arranged in the outdoor part.

An air-conditioning apparatus includes an outdoor unit, a heat medium relay unit, and an indoor unit. The outdoor unit is installed in an outdoor space, which is a space outside a building including an air-conditioned space. The heat medium relay unit is installed in the outdoor space, and includes a housing that accommodates an intermediate heat exchanger. The indoor unit includes a load heat exchanger configured to exchange heat between air and a heat medium. The housing is installed to the outer wall of the building.