Sprinkle both sides of the tri tip with the coffee rub. Pat into the tri tip.
Place in air fryer. Cook at 400 degrees for 8 minutes. Flip tri tip and cook another 8 minutes. Check temperature. If you are looking for rare you want 125 degrees, medium is 145 degrees and well is 160 degrees. If it is not cooked enough, cook another minute at 400 degrees. Continue until you have reached the desired temperature.