blower motor is the fan that physically pushes air into the cabin, while the resistor controls the power sent to the motor to set different fan speeds. A fault in either part can affect your heating and ventilation.

Common signs include no airflow at all, fan only working on the highest speed, grinding or whining noises, a burning smell, or the fan cutting out intermittently.

Yes, if the resistor overheats or shorts out, it can send incorrect voltage to the motor, which may cause the motor to overwork, overheat or burn out over time.

Costs vary by vehicle make and model, but a resistor replacement is generally cheaper than a full blower motor replacement. Browse our range for exact pricing on your vehicle.

It's possible for those with mechanical experience, but the blower motor/resistor is often located behind the dashboard or glovebox, so many drivers prefer to have it fitted by a qualified mechanic.

This is a classic sign of a failed blower motor resistor. Most resistors are wired so the highest speed bypasses the resistor entirely, which is why it keeps working even when the resistor has failed.

Common causes include overheating from prolonged use, corrosion, worn internal windings, or damaged wiring connectors.

If both parts are old or you're unsure which one is causing the fault, buying them together is often a more reliable, long-term fix especially on higher-mileage vehicles.

Most vehicles don't show a dedicated warning light for blower/HVAC faults, but you may notice fuse warnings or general electrical alerts if the motor is drawing excessive current.

Yes, our heater blower motors and resistors come with a warranty for peace of mind. Check the product listing or contact our support team for specific warranty details.