can someone tell me how to fix this problem? The heat is just simply not enough and it's freezing cold in NY.

Did you check the Heater Resistor (technically known as Final Stage Resistor FSR or Final Stage Unit FSU)? It's also advisable to check the Fuses? Do you hear the fan running noise for few seconds (.. less than a minute...I would say! ) after switching your engine? Do you have problems with starting the engine, hence feeling the dead battery? :smokin:

www.burzs.com/edit/arg.php?id=9425