An active comfort controlled bedding system comprising: an air blower assembly disposed within a mattress, the air blower assembly comprising: a unidirectional air blower in fluid communication with a circuitous and continuous conduit; said bedding system being characterized in that said air blower assembly further comprises: a bidirectional air flow conduit fluidly coupled to the circuitous and continuous conduit and including an open end in fluid communication with a location within the mattress, the bidirectional air flow conduit including at least one sensor for measuring a property associated with air flowing through the bidirectional air flow conduit from or through the open end; an inlet port fluidly coupled to the circuitous and continuous conduit at a location between an outlet of the unidirectional air blower and the bidirectional air flow conduit; an outlet port fluidly coupled to the circuitous and continuous conduit at a location between an inlet of the unidirectional air blower and the bidirectional air flow conduit; adjustable valves (324, 326) in the inlet port and in the conduit between the inlet port and the bidirectional air flow conduit; and adjustable valves (324, 326) in the outlet port and in the conduit between the outlet port and the bidirectional air flow conduit, wherein the adjustable valves (324, 326) in the inlet port, the outlet port and the bidirectional air flow conduit are configured to provide bidirectional air flow through the bidirectional air flow conduit from the unidirectional air blower. a unidirectional air blower in fluid communication with a circuitous and continuous conduit; said bedding system being characterized in that said air blower assembly further comprises: a bidirectional air flow conduit fluidly coupled to the circuitous and continuous conduit and including an open end in fluid communication with a location within the mattress, the bidirectional air flow conduit including at least one sensor for measuring a property associated with air flowing through the bidirectional air flow conduit from or through the open end; an inlet port fluidly coupled to the circuitous and continuous conduit at a location between an outlet of the unidirectional air blower and the bidirectional air flow conduit; an outlet port fluidly coupled to the circuitous and continuous conduit at a location between an inlet of the unidirectional air blower and the bidirectional air flow conduit; adjustable valves (324, 326) in the inlet port and in the conduit between the inlet port and the bidirectional air flow conduit; and adjustable valves (324, 326) in the outlet port and in the conduit between the outlet port and the bidirectional air flow conduit, wherein the adjustable valves (324, 326) in the inlet port, the outlet port and the bidirectional air flow conduit are configured to provide bidirectional air flow through the bidirectional air flow conduit from the unidirectional air blower. a bidirectional air flow conduit fluidly coupled to the circuitous and continuous conduit and including an open end in fluid communication with a location within the mattress, the bidirectional air flow conduit including at least one sensor for measuring a property associated with air flowing through the bidirectional air flow conduit from or through the open end; an inlet port fluidly coupled to the circuitous and continuous conduit at a location between an outlet of the unidirectional air blower and the bidirectional air flow conduit; an outlet port fluidly coupled to the circuitous and continuous conduit at a location between an inlet of the unidirectional air blower and the bidirectional air flow conduit; adjustable valves (324, 326) in the inlet port and in the conduit between the inlet port and the bidirectional air flow conduit; and adjustable valves (324, 326) in the outlet port and in the conduit between the outlet port and the bidirectional air flow conduit, wherein the adjustable valves (324, 326) in the inlet port, the outlet port and the bidirectional air flow conduit are configured to provide bidirectional air flow through the bidirectional air flow conduit from the unidirectional air blower.