I have a new Westinghouse gas furnace and ac system (with a variable speed motor) and a new WhiteRodgers t-stat. The t-stat has 3 options for the fan setting (on / off / prog). The prog setting will cycle the fan for 10 minutes on and 20 minutes off - if the t-stat has not called for heat or cool during the past 60 minutes.
I like the prog setting, but I am wondering if it adds much wear or harm to the system? and if the electric consumption is very much.
I live in Dallas, TX -- so much of the time during the fall, winter, and spring my system is not call for heat / cool.
Any recommendations ?