"I have noticed in the past day that my Central Air Unit (inside) is constantly blowing air even though the outside compressor is going on and off (like normal). My house is still warm, but is this normal. " My heat ducts always are blowing air, is this normal?

Its possible (and don`t get mad at me if I`m wrong),, but sometimes its overlooked, check and make sure the tstat is set on auto and not on fan only,, it has happened to many in the past, I hope its something this simple

It is on auto. Do you think it has to do with being 20 below out right now?