The invention provides an indoor set for a conduit type air conditioner. The structure comprises a heat exchanger for heat exchange between air and refrigerant arranged inside a housing, a blowing fan for blowing the exchanged air in the heat exchanger toward the indoor direction arranged inside the housing, an output wind-guiding port for diversion of air flowing to indoor projecting toward outside of the housing and a rated wind pressure regulating unit for regulating outer rated wind pressure in which the output wind-guiding port is inserted for regulating air effluent area arranged on the air-conditioner housing. Effect of the invention is: cold air output area can be changed according to the set criteria and the actual outer rated wind pressure can be changed thereby.