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Blower Motor Resistor

Critical For Operation

Climate Control

Regulates the speed of the blower motor by controlling electrical resistance.

The blower motor resistor adjusts the fan speed by varying the electrical resistance, allowing for different levels of airflow in the HVAC system.

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Typical part cost
$10–$40🔒
🔧
Typical labor cost
$50–$150🔒
🛣️
Typically lasts
80,000–150,000 mi
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Or about
5.0–10.0 years
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DIY difficulty
4/10

⚠️ Owners Often Notice

If the Blower Motor Resistor is starting to fail, these are the signs owners most commonly report before it gets worse:

Blower motor stuck at one speed
No variable fan control
Weak airflow
HVAC fan not working
Blower motor not adjusting
No airflow

Related Services

Services commonly performed on or around this part.

Replace Blower Motor Resistor

No standard interval on file

Inspect Blower Motor Resistor

No standard interval on file

Test Blower Motor Resistor

No standard interval on file