ACURA TL HEATER NOT WORKING

My Ac Works Fine Blowing Cold Air. When I Turn The Dial To Heat I.E 90 It Does Not Blow Hot Air. It Just Blows Air From Outside.

I Was Seeing If You Could Help Me Figure Out Why I Cant Get Hot Air Out Of The Heater It Blows Cold Air Ive Checked Fuses, And All Relays...

Just A Couple Days Ago My Heater On My Car Stop Working I Checked The Fuses Everything Seems To Be Ok? Should I Change The Heater Control...

I Have Climate Controlled Heat And It Used To Take A While For It To Kick In In Cold Weather But Now It Won't Kick On At All, I've...