Ok, sounds like the verdict is in. I'm going to go flush my whole system. To clarify, the heater/cooling system has been working fine this whole time. It just started doing this last night. I know that there is no leak, however it is possible that air could be in the system somewhere.  Is it going to hurt anything if I pull the hoses and run water through my system with a garden hose to flush everything out?

Thanks a bunch guys.

))--SLIVER-->