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VXPRO Heating and Cooling

Heater Blower Motor Resistors and Fan Speed Controllers

Precision Engineered to Champion the Independent Aftermarket

VXPRO Heater Blower Motor Resistors and Fan Speed Controllers are vital components in modern HVAC systems, enabling precise regulation of fan speeds for heating and cooling. Whether the system uses a traditional resistor pack or an advanced electronic controller, VXPRO components are engineered to deliver OE-equivalent performance and reliability.

As with all VXPRO components, they come backed by a 5-year warranty and are fully supported by TechASSIST and StockASSIST — helping independent workshops diagnose and fix blower motor faults confidently, while protecting their bottom line.

Heater Blower Motor Resistor

StockASSIST: Our Most Popular Heater Blower Motor Resistors and Fan Speed Controllers

Resistor and fan speed controller faults are especially common during colder months. They’re a fast-moving, low-cost solution that gets customers back on the road fast. StockASSIST helps you carry the right references for peak-season demand, guided by real-world data.
Here are some of the most in-demand applications in our UK range:

Heater Blower Motor Resistor

EH1071

VXPRO Heater Blower Motor Resistor

Heater Blower Motor Resistor

EH1065

VXPRO Heater Blower Motor Resistor

Heater Blower Motor Resistor

EH1062

VXPRO Heater Blower Motor Resistor

Heater Blower Motor Resistor

EH1064

VXPRO Heater Blower Motor Resistor

Heater Blower Motor Resistor

EH1122

VXPRO Radiator Fan Pre-Resistor
Heater Blower Motor Resistor

EH1097

VXPRO Heater Blower Motor Resistor

Heater Blower Motor Resistor

EH1094

VXPRO Heater Blower Motor Resistor

HVAC Fan Speed Controller

EH1163
Heater Blower Motor Resistor

EH1159

VXPRO Heater Blower Motor Resistor

Heater Blower Motor Resistor

EH1000

VXPRO Heater Blower Motor Resistor

Heater Blower Motor Resistor

EH1056

VXPRO Heater Blower Motor Resistor

HVAC Fan Speed Controller

EH1161

VXPRO HVAC Fan Speed Controller
HVAC Fan Speed Controller

EH1013

VXPRO HVAC Fan Speed Controller
HVAC Fan Speed Controller

EH1164

VXPRO HVAC Fan Speed Controller
HVAC Fan Speed Controller

EH1146

VXPRO HVAC Fan Speed Controller
HVAC Fan Speed Controller

EH1032

VXPRO HVAC Fan Speed Controller
Heater Blower Motor Resistor

EH1069

VXPRO Heater Blower Motor Resistor

Heater Blower Motor Resistor

EH1126

VXPRO Radiator Fan Pre-Resistor
HVAC Fan Speed Controller

EH1033

VXPRO HVAC Fan Speed Controller
Heater Blower Motore Resistor Wiring Repair Plug

EH1054

VXPRO Heater Blower Motor Resistor Wiring Repair

TechASSIST: Product Support and Information

These components control the speed at which the heater blower motor operates. Without them, airflow would be stuck on a single speed or not work at all. Specifically, they: Enable multiple fan speed settings in HVAC systems Ensure efficient demisting and cabin heating/cooling Prevent blower motor overload by regulating power delivery Work in tandem with climate control modules, supporting comfort and safety Protect the blower circuit, especially in systems with brushless motors or feedback loops A faulty resistor or controller is one of the most common causes of HVAC failure.

Why Do They Fail?

  • Overheating caused by clogged cabin filters or blocked vents

  • Age-related wear of internal resistive elements or transistors

  • Electrical overloads, especially in older vehicles

  • Short circuits caused by water ingress (e.g., through scuttle drains)

  • Faulty blower motors, drawing excess current and damaging the resistor/controller

  • Corrosion at connectors, leading to high resistance and heat build-up

Symptoms of a Failing Blower Resistor or Speed Controller

  • Only one fan speed works, often just the highest

  • No fan operation at all, despite a working motor

  • Inconsistent blower speeds, cutting in and out

  • Blower runs continuously, even with ignition off (in vehicles with PWM systems)

  • Burning smell or heat damage near the resistor location

  • Blower fuse blowing repeatedly

Fitting Tips

  1. Always replace the cabin filter — blocked filters can cause resistor overheating

  2. Test blower motor current draw — an overworked motor may damage new resistors

  3. Inspect connectors for signs of melting, corrosion, or looseness

  4. Ensure correct matching part — many modern vehicles use intelligent controllers (not passive resistors)

  5. Clear HVAC fault codes, especially on vehicles with automatic climate control

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