A multi-use system for influencing organic matter in an environmentally controlled room is provided with a modular dehumidification system. The modular dehumidification system includes a head unit, with separate cooling and heating subcircuits, and multiple modular dehumidifier units. Each modular dehumidifier unit has a cooling coil operable to cool and/or dehumidify the air and a heating coil operable to heat the air, for example, to raise room temperature and/or offset heat loss arising during dehumidification. The cooling coils are connected to the head unit in parallel to one another and the heating coils are connected to the head unit in parallel to one another. The number of modular dehumidifier units installed in the system is selected to provide the system with the desired maximum capacity. The control system may be configured to activate the appropriate number of cooling and heating coils, and to control the operation of each active coil.

A duct type air conditioning apparatus is provided with a blowing portion including a first cabinet in which a blower assembly is installed and a heat exchanging portion including a second cabinet in which a heat exchanger is installed. The air conditioning apparatus includes a partition panel arranged between the first and second cabinets and connected to facing sides of the first and second cabinet, and first and second link members separably fastened along an upper end and a lower end of the partition panel to keep an airtight seal in a connection portion between the first and second cabinets.

A ventilator includes a housing having at least one opening formed therein. The housing has a plurality of sides including a first side and a second side and a modular duct connector having a through hole for connection with a duct. The modular duct connector is connectable to the at least one opening of the housing in at least a first configuration and a second configuration. In the first configuration, the through hole is arranged at the first side of the housing and in the second configuration, the through hole is arranged at the second side of the housing.

An air-conditioning, system includes a cabinet with a partition dividing an internal space of the cabinet into an indoor compartment and an outdoor compartment. An evaporator, a compressor and an internal fan are disposed in the indoor compartment. A condenser and an external fan are disposed in the outdoor compartment. The cabinet is provided with an internal air inlet corresponding to the internal fan, an internal air outlet corresponding to the evaporator, an external air inlet corresponding to the external fan, and an external air outlet corresponding to the condenser. The air-conditioning system is of a cabinet structure as a whole, has a small size and occupies a small space. An air flow of the internal fan is completely separated from an air flow of the external fan, so that internal circulating air and external circulating air are effectively prevented from being mixed, and the refrigerating effect is improved.

An air cleaning or purifying system includes a main air cleaner or purifier having an upper seating surface that is at least partially flat and at least one portable air purifier having a base configured to be seated on re lifted from the upper seating surface. The main air purifier and the portable air purifier may each have a filter and a fan. The air main and portable air purifiers may operate together. The portable air purifier may be moved to another room, or may be seated on the main air purifier such that various combinations of air purifying modes and air purifying capacities may be performed.

An indoor unit for an air conditioner, includes: a main body including a fan and a heat exchanger; a casing that accommodates the main body and is attachable to and detachable from the main body; a front panel that is attachable to and detachable from the casing; and a left side panel and a right side panel that covers side surfaces of the casing, respectively and is attachable to and detachable from the casing.

An air purifier includes a display mounted between a front panel of a cabinet of the air purifier and an upper panel of the cabinet. The front panel includes a door which is configured and supported to be drawn in to the cabinet toward the display or drawn out from the cabinet away from the display. A display module including the display is disposed below the upper panel.

A portable air purifier may include a housing having an accommodation space formed therein and including an inlet through which air is suctioned and an outlet through which air is discharged, a filter installed at an inside of the housing that faces the inlet, a fan module installed at the inside of the housing that faces the outlet, a filter case in which the filter is detachably installed and which is disposed between the filter and the fan module and configured to guide movement of air from the filter to the fan module, and a sanitizing portion mounted on the filter case and configured to irradiate sanitizing light toward the filter.

HVAC system includes a front side access panel, an HVAC unit, a mounting sleeve, and a back side grille. The mounting sleeve and the HVAC unit are configured to fit within the preexisting framing of a building, and in particular to be mounted in a wall, between pre-existing studs, of a room. The HVAC unit can be installed into the mounting sleeve via quick connect mechanisms including, but not limited to, snap in connections and/or tab and slot features. The mounting sleeve enables rapid installation and also condensate collection. The HVAC unit includes separate modular units, e.g. an evaporator module unit, a mechanical module unit, and a condenser module unit, that are mounted and interconnected to each other. The HVAC system includes vertically oriented HVAC components and component connections that are self-aligned, and can be further configured with a horizontal configuration portion for multi-zone capability.

An indoor unit of an air conditioner and an air conditioner are provided. A bracket of the indoor unit has a chassis. The chassis has a limiting structure. An air duct assembly of the indoor unit is detachably engaged or magnetically connected with an upper portion of the chassis. A movable limiting member of the indoor unit is provided to the air duct assembly. The movable limiting member is configured to movably protrude from the air duct assembly and engage with the limiting structure to retain the air duct assembly within the bracket.