Patent ID: 8146376

Claim:
A method for automatically controlling a blower of an HVAC system, comprising: monitoring at least a first call line connected to the HVAC system from a control unit of the HVAC system for a presence or an absence of a blower call signal on at least the first call line over a given monitoring time period; determining an amount of total run time that the blower of the HVAC system has been active in response to the presence or absence of the blower call signal on at least the first call line of the HVAC system over a given measurement time period throughout the given monitoring time period; determining if an amount of time left in the monitoring period is greater than zero; reducing, if the amount of time left in the monitoring period is greater than zero, the amount of time left in the monitoring period by an initial time of the given measurement period; determining an amount of remaining run time that the blower of the HVAC system is desired to be active during the given monitoring period; determining if the amount of reduced time left in the monitoring period is greater than the remaining run time that the blower of the HVAC system is to be active; and activating, if the amount of reduced time left in the monitoring period is not greater than the determined amount of remaining run time that the blower of the HVAC system is to be active, the blower of the HVAC system.