My 1999 Chrysler Sebring heater is blowing cold air (no heat at all). Any Ideas? on 1999 Chrysler Sebring

The AC works great. All kinds of cold air from the AC in the summer. Now that it is cooler, no heat.

Asked by for the 1999 Chrysler Sebring
2 answers
possible blend door
could be several issues like stuck thermostat or blockage. also could be issue under dash