An air blowing from an outdoor unit passes through a vaporization filter installed to face an air outlet of an outdoor unit. The working water W is dropped from a water supply pipe above the vaporization filter, and the working water W flowing down from a filter constituent plate is collected in a water storage tank. The working water W is supplied to the water supply pipe by using a water supply pump. The working water W is circulated between the water storage tank, the water supply pipe, and the vaporization filter. The air blowing discharged from the outdoor unit and passed through the vaporization filter is deprived of the heat of vaporization, and the temperature of the air blowing from the outdoor unit exhaust cooling device is lowered.

A heating, ventilation, and air-conditioning (HVAC) system that includes an outdoor heat exchanger (HX) and outdoor fans. The outdoor fans are arranged in either an in-line configuration or a staggered configuration to satisfy one or more requirements to optimize the airflow across the outdoor HXs.

A heating, ventilation, and air-conditioning (HVAC) system that includes an outdoor heat exchanger (HX) and outdoor fans. The outdoor fans are arranged in either an in-line configuration or a staggered configuration to satisfy one or more requirements to optimize the airflow across the outdoor HXs.

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 outdoor unit of an air-conditioner. The outdoor unit has a casing having a front air outlet and at least one air inlet. At least one fan is located in the casing. The outdoor unit is configured such that the at least one air inlet is provided in a top section and or in a bottom section of the outdoor unit when the outdoor unit is installed in an operational position. The outdoor unit is further configured such that the at least one fan is configured to move air from the at least one air-inlet to the front air outlet or move air from front air outlet to the at least one air-inlet.

A heating, ventilation and air conditioning curb assembly includes a curb that has a planar profile for positioning on a flat roof of a building. A heating, ventilation and air conditioning unit is included that has dimensions which are unequal to dimensions of the curb. An adapter is positionable into the curb and the adapter has dimensions sufficient to accommodate dimensions of the heating, ventilation and air conditioning unit. Thus, the heating, ventilation and air conditioning unit can be installed onto the curb. A power unit is integrated into the curb to supply electrical power to the heating, ventilation and air conditioning unit in the event of a power outage thereby ensuring the heating, ventilation and air conditioning unit continues to operate. A leveling unit is coupled to the adapter for leveling the heating, ventilation and air conditioning unit.

A heating, ventilation and air conditioning curb assembly includes a curb that has a planar profile for positioning on a flat roof of a building. A heating, ventilation and air conditioning unit is included that has dimensions which are unequal to dimensions of the curb. An adapter is positionable into the curb and the adapter has dimensions sufficient to accommodate dimensions of the heating, ventilation and air conditioning unit. Thus, the heating, ventilation and air conditioning unit can be installed onto the curb. A power unit is integrated into the curb to supply electrical power to the heating, ventilation and air conditioning unit in the event of a power outage thereby ensuring the heating, ventilation and air conditioning unit continues to operate. A leveling unit is coupled to the adapter for leveling the heating, ventilation and air conditioning unit.

An outdoor unit includes a casing having a bottom panel formed in a rectangular shape in a planar view. The bottom panel includes a bottom portion constituting a lower face of the casing, and a rising portion rising from an outer peripheral edge of the bottom portion. A first holding part is provided to the rising portion on a side of one side face of the casing, and a second holding part is provided to the rising portion on a side of the other side face of the casing opposite to the side of the one side face.

An outdoor unit includes a casing having a bottom panel formed in a rectangular shape in a planar view. The bottom panel includes a bottom portion constituting a lower face of the casing, and a rising portion rising from an outer peripheral edge of the bottom portion. A first holding part is provided to the rising portion on a side of one side face of the casing, and a second holding part is provided to the rising portion on a side of the other side face of the casing opposite to the side of the one side face.

When a humidity condition, including a humidity detected by a temperature and humidity sensor and a humidification load sensing unit falling below a threshold value, is met, an outside air conditioner supplies the heated and humidified air into the room. When the humidity condition is met during the indoor heating operation, the indoor heating operation is stopped or weakened. When the humidity condition is met, only the outside air conditioner is subjected to a heating and humidifying operation. Since the indoor air is not heated by the inside air conditioner more than necessary, when a heating load is low and a humidification load is present, a “conflicting state” can be prevented in which the inside air conditioner is subjected to a cooling and dehumidifying operation and the outside air conditioner is subjected to the heating and humidifying operation.