Abstract: A modular solar heating device particularly designed and constructed for installation at the base of a mobile home, and comprising a support housing of a substantially triangular cross sectional configuration for supporting a light transmitting cover in an angular orientation with respect to the horizontal for transmitting energy from the sun to a heating plate disposed within the housing in spaced and substantially parallel planar relation with respect to the cover. A cool air receiving chamber is provided below the heating plate and in communication with a cold air return vent within the interior of the home for receiving cooled air therefrom. A hot air chamber is provided between the heating plate and the cover due to a greenhouse effect, and an air passageway provides communication between the cool air receiving chamber and the hot air chamber.