I found the drain plug and drained the remaining coolant from the engine block. I refilled and bled the air out. Took the car for a drive and for the first time on 2 years I was able to drive without heat blowing towards my face. It almost seems that the heater core flushing help dislodge a lot of gunk that was preventing the system to work properly. Now I have heat when I want heat. I have a brand new heater control valve that I will be installing this weekend. After that, I will be driving the car to an AC shop to see if they can charge the system properly.