Patent ID: 6997390

Claim:
A zone climate control system for retrofitting to an existing forced-air system, the existing forced-air system including a blower, at least one of a heater and a cooler, a conditioned air plenum, and a plurality of air ducts, the zone climate control system comprising: a plurality of inflatable bladders, each disposed within a respective one of the air ducts; a plurality of air tubes, each coupled to a respective one of the bladders and extending through a respective one of the air ducts into the conditioned air plenum, wherein the plurality of air tubes extends outside the conditioned air plenum; a plurality of valves each coupled to a respective one of the air tubes; an air pump coupled to the plurality of valves to provide pressure and vacuum; and a computer-controlled valve actuator coupled to the plurality of valves for selectively coupling each air tube to a respective one of the pressure and the vacuum to accordingly inflate or deflate a respective one of the bladders and thereby block or pass air from the conditioned air plenum through the respective air duct.