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heater on at idle and will not blow warm air. when moving it blows the warm air from the vents. what will cause this
good question
most of the time its because not enough air flow thru the condensor---clean rad &cond
why does ac blow warm air? why does ac blow warm air?
if the heater does not blow out warm air change the setting.
Low on coolant. Stuck open thermostat. Poor circulation (plugged heater core).
low freon, bad compressor, clogged lines, plugged condenser etc etc
Isn't a heater supposed to blow warm air?
The system can be low on refrigerant
Could be, low on coolant, stuck open thermostat, plugged up heater core, temp blend door malfunction,
Heatstrips could be on with ac
usually in hot or warm temperatures because, hot air expands and cold does not.