Abstract: A solar air heat collector includes a generally rectangular box-like housing of thermal insulating material and having an open front closed by a transparent plate. A corrugated solar heat absorber panel is supported in predetermined spaced relationship to the housing back wall in a location intermediate the transparent plate and the housing back wall by support rails extending along the housing side walls. A substantially sealed air space is defined between the transparent plate and absorber panel, and an air flow passage is defined between the absorber panel and the housing back wall.