An evaporator rough-in box includes a flat panel having a first score mark by which the flat panel can be folded between a front wall and a top wall of the rough-in box, and a second score mark by which the flat panel can be folded between the front wall and a bottom wall of the rough-in box. The front wall has an opening through which an interior of the rough-in box can be accessed, the opening being covered by a removable cover plate. Left and right ends of the top and bottom walls include extension pieces bendably attached to central portions of the top and bottom walls to form mounting brackets. The central portions include score marks that delineate knock-out holes by which a lineset and a drain line can be installed to the rough-in box. A drain fitting is attached to the knock-out hole of the drain line.

An air conditioner includes a housing, a heat exchanger arranged to exchange heat with air flowing into the housing, a blower fan arranged inside the housing for discharging air that has exchanged heat with the heat exchanger to the outside and a discharging plate having an opening formed to discharge air blown from the blower fan out of the housing, and a plurality of discharging holes formed to discharge air to surroundings of the opening, wherein the discharging plate is arranged to discharge the air that has exchanged heat by the heat exchanger out of the housing, and wherein the discharging plate is made of metal. By such configuration, air conditioner increase user satisfaction.

Provided is an indoor unit, for an air conditioner, including a light-weight air guiding plate whose attachment has high strength. The indoor unit, for an air conditioner, includes: an air guiding plate provided to an indoor-unit body of the indoor unit, and opens and closes an outlet of air and guides the air blown out from the outlet; and an attachment for attaching the air guiding plate to the indoor-unit body. The air guiding plate is formed of foam resin. The attachment is formed of non-foam resin.

Provided is an indoor unit, for an air conditioner, including a light-weight air guiding plate whose attachment has high strength. The indoor unit, for an air conditioner, includes: an air guiding plate provided to an indoor-unit body of the indoor unit, and opens and closes an outlet of air and guides the air blown out from the outlet; and an attachment for attaching the air guiding plate to the indoor-unit body. The air guiding plate is formed of foam resin. The attachment is formed of non-foam resin.

An air conditioner includes a main body, a blower fan disposed in the main body, a discharge panel including a main outlet configured to discharge air discharged from the blower fan and a plurality of fine outlets provided near the main outlet, an opening and closing member configured to move in forward and backward directions and open and close the main outlet, and a lighting apparatus disposed on a back surface of the opening and closing member and configured to emit light to a back side thereof. Since an area illuminated by the lighting apparatus is changed according to a position of the opening and closing member, a user intuitively identifies an operational state of the air conditioner.

A heater having a cover with an exhaust port and border a intake port allowing air to enter the heater. The heated air is then dissipated through an exhaust port on the cover of the heater. The border intake and cover of the heater have a perpendicular relationship whereas the exhaust port and cover have a parallel relationship.

An air conditioner selection system according to the present invention is capable of efficiently selecting an air conditioner that satisfies a safety standard requirement in a case where a refrigerant leaks. An air conditioner selection system (100) is a system for selecting an air conditioner (50) including an indoor unit (52). The air conditioner selection system (100) is provided with a floor area acquisition section (12a), an allowable refrigerant amount acquisition section (12b), and an air conditioner selection section (12c). The floor area acquisition section (12a) acquires a floor area of a room (3) where the indoor unit (52) is to be installed. The allowable refrigerant amount acquisition section (12b) acquires an allowable refrigerant amount of a refrigerant allowed to remain in the room (3) at least based on the floor area acquired by the floor area acquisition section (12a). The air conditioner selection section (12c) selects the air conditioner (50) including the indoor unit (52) installable in the room (3) at least based on the allowable refrigerant amount acquired by the allowable refrigerant amount acquisition section (12b).

An air conditioner selection system according to the present invention is capable of efficiently selecting an air conditioner that satisfies a safety standard requirement in a case where a refrigerant leaks. An air conditioner selection system (100) is a system for selecting an air conditioner (50) including an indoor unit (52). The air conditioner selection system (100) is provided with a floor area acquisition section (12a), an allowable refrigerant amount acquisition section (12b), and an air conditioner selection section (12c). The floor area acquisition section (12a) acquires a floor area of a room (3) where the indoor unit (52) is to be installed. The allowable refrigerant amount acquisition section (12b) acquires an allowable refrigerant amount of a refrigerant allowed to remain in the room (3) at least based on the floor area acquired by the floor area acquisition section (12a). The air conditioner selection section (12c) selects the air conditioner (50) including the indoor unit (52) installable in the room (3) at least based on the allowable refrigerant amount acquired by the allowable refrigerant amount acquisition section (12b).

A heat exchanger including a header having a plurality of header openings with rigid tubes that may be made of plastic are inserted in the openings. The tubes are sealed to the header to prevent leakage between the header and the tubes to prevent water and air leakage between the wet, scavenger air stream flowing through the tubes and a dry air stream flowing around the tubes. A method of making the heat exchanger includes providing the openings with a flange and uses an interference fit between the rigid heat exchange tubes and the header openings. A self-leveling sealant may be used to seal the heat exchanger tubes to the header using, for example, a paint roller and/or a paint sprayer.

An air conditioner indoor unit is provided. The air conditioner indoor unit includes: a base module, having a base part which is arranged with a fan motor; a heat exchange module having a heat exchanger and a connection pipeline for connecting the heat exchanger to an air conditioner outdoor unit; the heat exchanger and the connection pipeline are arranged in such a way that in a mounted state, the heat exchanger and the connection pipeline are entirely located at a front side of the base module; an air and water duct module having an air duct assembly; the air duct assembly is suitable to be entirely disassembled from the base part without disassembling the fan motor in the base part. During mounting, pre-assembly is first performed and then general assembly is performed; in such manner, the time needed to assemble the whole unit may be reduced.