Abstract: An electric thermal storage heater with a heat storage brick assembly enclosed within an insulating sheath and an outer shell or housing; there is a space between the outer shell and the insulating sheath through which low temperature air is passed; the brick assembly has air flow openings therethrough into which the electric heating elements may be slipped during installation, and the openings communicate with entrance and exit passages which supply air to and through the brick assembly; air valving is provided to close and modulate the air flowing through the brick assembly and through the low temperature air path; the heating elements maintain the temperature of the bricks between 500.degree. F. and 1300.degree. F., depending upon the expected heating load; and air ducts and a fan move air from the storage heater to the duct system of a heat pump or similar forced air heating device.

Abstract: An electric thermal storage heating unit including (i) an insulated housing defining a storage chamber with two laterally extending linear openings through the base of the storage chamber, (ii) a plurality of heat-sink bricks within the storage chamber which define separate vertical ducts above each of the lateral linear openings, and (iii) a pair of substantially planar, serpentine electrical heating elements each defining an uppermost portion with parallel upper right and upper left sides and a lowermost portion with parallel lower right and lower left sides wherein the uppermost portion is angled with respect to the lowermost portion within the plane defined by the element so as to cause the right and left sides of the lowermost portion to extend at an obtuse angle of less than 180.degree.