trying to find the problem

Hey everyone, I'm trying to figure out what's going on with my 2005 explorer limited V8. Water is leaking from behind the motor. Whenever the ac or heat is on it runs hot. Water just keeps draining out. Changed the lower radiator hose and still have the same problem. Any help would be great. Thanks in advance for your time.

Welcome to this forum! It might be a freeze plug. Connect a cooling system pressure onto it to see where the leak is coming from.