Electric air conditioning apparatus comprising a conditioning body defining a housing compartment, at least one functional component (16, 17, 18) suitable to modify at least one environmental characteristic of an internal space, the functional component comprising conditioning means provided with a ventilation device and a conditioning device, and at least one device for detecting a subject, said device being associated with said conditioning body and comprising a continuous infrared detection means, and a spatial detection means respectively configured to detect respective thermal and spatial data of said space correlated to the presence of said subject therein and to the distance of said subject with respect to said device, characterized in that said infrared detection means is of the PIR type consisting of a single passive type sensor, configured to detect said thermal data in a manner substantially continuous over time, and is provided with signal reception and transmission means of the digital and analogue type which are configured to detect the presence of said subject both if it is static, and also if it is in motion, wherein said detection device comprises a processing board configured to receive and process said data detected by said detection means (19, 21) and determine the possible presence of said subject and said distance and supply command signals suitable to command continuously and automatically the functioning of said electric apparatus and/or of said at least one functional component (16, 17, 18) on the basis of the processing carried out to regulate the temperature and the speed of a flow of conditioned air as a function of the distance of said subject and to regulate said air conditioning apparatus modifying its parameters and/or the operating set-up as a function of the position taken by said subject, in such a way as to provide said subject with desired climatic conditions around the area occupied by him, regardless of his distance from said air conditioning apparatus. at least one functional component (16, 17, 18) suitable to modify at least one environmental characteristic of an internal space, the functional component comprising conditioning means provided with a ventilation device and a conditioning device, and at least one device for detecting a subject, said device being associated with said conditioning body and comprising a continuous infrared detection means, and a spatial detection means respectively configured to detect respective thermal and spatial data of said space correlated to the presence of said subject therein and to the distance of said subject with respect to said device, characterized in that said infrared detection means is of the PIR type consisting of a single passive type sensor, configured to detect said thermal data in a manner substantially continuous over time, and is provided with signal reception and transmission means of the digital and analogue type which are configured to detect the presence of said subject both if it is static, and also if it is in motion, wherein said detection device comprises a processing board configured to receive and process said data detected by said detection means (19, 21) and determine the possible presence of said subject and said distance and supply command signals suitable to command continuously and automatically the functioning of said electric apparatus and/or of said at least one functional component (16, 17, 18) on the basis of the processing carried out to regulate the temperature and the speed of a flow of conditioned air as a function of the distance of said subject and to regulate said air conditioning apparatus modifying its parameters and/or the operating set-up as a function of the position taken by said subject, in such a way as to provide said subject with desired climatic conditions around the area occupied by him, regardless of his distance from said air conditioning apparatus.