heater switch needs replaced
either the thermostat or the fan is no good. You would need to locate the thermostat and see if its stuck open or closed!
it's because of heat transfer into convection .
Leak in heater core. Replace core.
The front expansion valve is clogged.
heater core possibly plugged and leaking
It doesn't really blow it out it just warms the cold air.
heater will not blow on a 1996 ford contour
if the heater does not blow out warm air change the setting.
No! Thermostat.
Could be a bad thermostat.
it has a partially clogged heater core.replace the heater core
Low coolant in the system. Defective heater control valve. Clogged heater core.