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Blend Door

Climate Control

Directs airflow through the vehicle’s heating and cooling system to adjust temperature.

The blend door is a mechanical flap within the HVAC system that directs the flow of air through the heater core or air conditioning evaporator, allowing for control of cabin temperature.

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Typical part cost
$20–$80🔒
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Typical labor cost
$100–$300🔒
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Typically lasts
100,000–200,000 mi
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Or about
5.0–10.0 years
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DIY difficulty
6/10

⚠️ Owners Often Notice

If the Blend Door is starting to fail, these are the signs owners most commonly report before it gets worse:

No air temperature control
Heater or A/C not working
Airflow stuck on hot or cold
Poor cabin comfort
No air circulation
System noise

Related Services

Services commonly performed on or around this part.

Replace Blend Door

No standard interval on file

Adjust Blend Door

No standard interval on file

Inspect Blend Door

No standard interval on file