04 ford explorer blows cold air?

My ford blows cold as well as makes a clicking nose when I turn on the hot air. Any one out there know what is the problem with my ford and how to fix it?

Could just be the blend air door. Which is the door that "flaps" between hot and cold. It could be stuck on cold, or could have some kind of actuator that went bad. Try to find the door and see if when you adjust the cold to warm the door turns at all. Could also be the heater coil. If your floor board is wet on the passenger side the heater coil could be broken, or maybe a hose came loose.