Well now that its getting closer to the winter, i tried turning on the heat and when the fans are going they just flow out cold air, does anyone have any idea about what it could be

 

yes.

make sure that Temp Control Dial is set on HOT.


otherwise likely cause - Thermostat stuck closed .

please be aware that it takes a while for a car to generate heat - you might need to drive about 5 minutes before you ought to get heat out of the heater.