A/C Control Vacuum Check Valve

Prevents vacuum leaks in A/C controls.

Prevents vacuum loss in the A/C system by allowing airflow in only one direction, helping maintain correct A/C mode selection.

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Typical part cost

$10–$40🔒

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Typical labor cost

$50–$150🔒

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Typically lasts

80,000–150,000 mi

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Or about

4.0–10.0 years

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DIY difficulty

3/10

If the A/C Control Vacuum Check Valve is starting to fail, these are the signs owners most commonly report before it gets worse:

A/C not switching modes

Poor A/C function

Loss of vacuum

Airflow control issues

A/C stuck

No cold air

Services commonly performed on or around this part.

Replace A/C Control Vacuum Check Valve

No standard interval on file

Inspect A/C Control Vacuum Check Valve

No standard interval on file

Test A/C Control Vacuum Check Valve

No standard interval on file