A car blowing cold air only while driving usually means:
Low coolant level – not enough heat at idle
Air trapped in system – blocks heater flow
Weak/bad water pump – works better at higher RPM
Partially clogged heater core – needs more flow to heat
When you drive, coolant moves faster, so you finally get heat.
Well it should blow cold while driving and stopped. You probably need to get your AC recharged. Hope I helped!!
Bad thermostat
check thermostat, might be stuck closed.
Driving like an absolute doughnut would cause that. Or not checking and toping up with oil and coolant.
Your thermostat is the likely culprit here it is probably stuck closed. Have it checked out.
low on coolant, dash control, blend door actuator are places to start
You just need to go and have your A/C system recharged and that should take care of the problem.
Because you set it that way
why does ac blow warm air? why does ac blow warm air?
Low coolant in the system. Defective heater control valve. Clogged heater core.
Your heater will blow cold air only.
check you antifreze level if it is low you wont have eat or if you get lots of fog your heater core is bad