hvac
 






 

Question by  CDT (117)

What is a "blend door" with respect to HVAC?

Someone told me my "blend door" may not be working properly.

 
+4

Answer by  Doug77 (1433)

Since the A/C system is only "on/off" it's either cold or off. A blend door allows ambient air to mix with A/C air for the desired temperature.

 
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