the invention is directed to programmable temperature control in which a controller may be programmed to control a thermal output of said temperature - modifying device , and to operate an air circulating system independently of the temperature - modifying device . the apparatus may incorporate a user input for entering air handling information to program the air circulating system to operate at predetermined intervals . the controller may be further programmed to receive air filtration information from the user input and to generate air filtration output information . a display provides access to the air filtration output information .