Damper control in space heating and cooling

Abstract

An amount of time that air has been delivered from an air handler to a space is tracked, and based on the tracked amount of time, at least one turn-on time or one turn-off time of the delivery of air from the air handler to the space is controlled. Other features relate, among other things, to controlling a replacement air vent, and to user interfaces.

1 - 24 . (canceled)  
   
   
       25 . A method comprising 
 enabling a user of a controller associated with an air handler to enter a value of a minimum amount of time that a fan of the air handler is to run.    
   
   
       26 . The method of  claim 25  also comprising enabling the user to enter a value of a duty cycle of the fan.  
   
   
       27 . A medium bearing instructions to cause a machine to enable a user of a controller associated with an air handler to enter a value of a minimum amount of time that a fan of the air handler is to run.  
   
   
       28 . Apparatus comprising 
 a controller to enable a user of a controller associated with an air handler to enter a value of a minimum amount of time that a fan of the air handler is to run.    
   
   
       29 - 81 . (canceled)