is this garbage necessary?

Neal Zimmerman said
haha. after all this discussion i took off valve and looked it over good, its completely rusted up, in the open position. Are these made by anybody?
I sort of like just having a regular old stop **** under hood. You could shut it off when warmer, and open it up in the depth of winters

Actually this is what some of us have done, regardless of AC or not. If the dampers are working properly, they pretty much close off the flow of hot air, BUT the core is still hot......in the heater box.......in the car, so it's radiating "some" heat into the car