Subaru Subaru WRX 2008-2014 HVAC Specifications
Subaru Subaru WRX 2008-2014

Subaru Subaru WRX 2008-2014 HVAC Specifications

Explore detailed HVAC system specifications for the 2008-2014 Subaru WRX, including compressor, condenser, blower motor, and refrigerant details. Ideal for maintenance, repair, and performance upgrades.

Updated

Overview Specifications

This document provides detailed specifications and information about the HVAC (Heating, Ventilation, and Air Conditioning) system for the 2008-2014 Subaru WRX. It includes technical details, operational guidelines, and maintenance tips to help users understand and optimize their vehicle's climate control system. Use this guide to navigate through sections, find specific information, and reference key specifications quickly.

How to Use

Use the search functionality to find specific terms or topics within the document. Enter keywords related to the HVAC system, such as 'blower motor' or 'refrigerant type,' to locate relevant sections quickly.

Navigate through the document by scrolling through the sections or using the table of contents. Each major section is divided into subsections with detailed points for easy reference.

Key Specifications

Refrigerant Type

R134a

Cabin Air Filter Size

9.5 x 7.5 x 1 inches

Blower Motor Power

12V DC

Temperature Range

60°F to 90°F

Dual-Zone Control

Available in premium models

Available Specifications

HVAC System Components

This section covers the primary components of the HVAC system in the 2008-2014 Subaru WRX. Learn about the blower motor, evaporator, condenser, and other critical parts that ensure efficient climate control.

Blower Motor
  • Located behind the glove compartment
  • Provides airflow through the vents
  • Controlled by the HVAC control panel
  • Can be replaced if faulty
  • Operates at multiple speed settings
  • Requires periodic inspection for debris
Evaporator and Condenser
  • Evaporator cools the air inside the cabin
  • Condenser dissipates heat from the refrigerant
  • Both are part of the refrigerant cycle
  • Regular cleaning prevents clogging
  • Located in the engine bay and dashboard
  • Essential for AC performance

HVAC Controls and Operation

This section explains how to operate the HVAC system, including temperature control, fan speed, and air distribution settings. It also covers the dual-zone climate control feature available in some models.

Temperature Control
  • Adjustable via rotary dials or digital controls
  • Range from 60°F to 90°F
  • Uses a blend door to mix hot and cold air
  • Automatic climate control in premium models
  • Sensors monitor cabin temperature
  • Manual override available
Air Distribution
  • Vents direct airflow to face, feet, or windshield
  • Defrost mode clears fogged windows
  • Recirculation mode for interior air
  • Dual-zone control in higher trims
  • Adjustable vent louvers
  • Automatic mode optimizes airflow

Maintenance and Troubleshooting

This section provides tips for maintaining the HVAC system and troubleshooting common issues such as weak airflow, unusual noises, or inconsistent temperature control.

Routine Maintenance
  • Replace cabin air filter every 12,000-15,000 miles
  • Check refrigerant levels annually
  • Inspect blower motor for wear
  • Clean evaporator and condenser coils
  • Lubricate moving parts as needed
  • Test HVAC controls periodically
Common Issues
  • Weak airflow due to clogged filter
  • Unusual noises from blower motor
  • Inconsistent temperature control
  • AC not cooling effectively
  • Foul odors from vents
  • Electrical issues with controls

Component Specifications

Overview

Type
Automatic Climate Control
Configuration
Dual-Zone
Platform
Integrated with Vehicle Electronics
Material
High-Density Plastic and Aluminum
Location
Dashboard Center and Rear Console

Dimensions

Main Unit Length
12.5 inches (31.75 cm)
Main Unit Width
8.2 inches (20.83 cm)
Main Unit Height
6.7 inches (17.02 cm)
Vent Diameter
2.5 inches (6.35 cm)
Duct Length
48 inches (121.92 cm)
Blower Motor Diameter
5.9 inches (14.99 cm)
Compressor Weight
15.4 lbs (6.98 kg)

Materials

Housing
High-Density Polypropylene
Evaporator Coil
Aluminum
Condenser Coil
Aluminum
Blower Fan
ABS Plastic
Ducting
Reinforced Rubber

Features

Climate Control
  • Dual-Zone Temperature Adjustment
  • Automatic Air Recirculation
  • Defrost Timer
  • Humidity Sensor
Airflow
  • Multi-Directional Vents
  • Rear Seat Vents
  • Variable Blower Speeds
  • Pollen Filter
Energy Efficiency
  • Eco Mode
  • Compressor Load Management
  • Low Power Consumption
User interface
  • LCD Display
  • Rotary Dials
  • Push-Button Controls
  • Backlit Controls
Safety
  • Overheat Protection
  • Low Refrigerant Detection
  • System Self-Diagnosis

Safety Features

System Protection
  • High-Pressure Cutoff Switch
  • Low-Pressure Cutoff Switch
User Safety
  • Child Lock for Rear Controls
  • Automatic Shutdown on Overheat
Environmental
  • R134a Refrigerant Compliance
  • Leak Detection System

Comfort Features

Temperature Control
  • Precision Thermostat
  • Rapid Cooling and Heating
Air Quality
  • Cabin Air Filter
  • Odor Neutralizer
Noise Reduction
  • Quiet Blower Motor
  • Vibration Dampening
Convenience
  • Auto-Defogging
  • Memory Settings for Driver Profiles

Accessories

Filters
  • Cabin Air Filter
  • Pollen Filter
  • Charcoal Filter
Controls
  • Remote Start Climate Control
  • Steering Wheel Controls
  • Mobile App Integration
Upgrades
  • Heated Seats Integration
  • Rear Climate Control Kit
  • UV Sterilization Module

Maintenance

Service interval
Every 15,000 miles or 12 months
Service Items
  • Replace Cabin Air Filter
  • Inspect Refrigerant Levels
  • Check Blower Motor Function
  • Clean Evaporator Coil
  • Inspect Ducting for Leaks
Maintenance Notes
Use only OEM-approved refrigerants and lubricants.

Warranty

Basic
Miles: 36,000
Years: 3
Coverage: Parts and Labor
Powertrain
Miles: 60,000
Years: 5
Coverage: Compressor and Blower Motor
Corrosion
Miles: Unlimited
Years: 5
Coverage: Housing and Ducting
Emissions
Miles: 80,000
Years: 8
Coverage: Refrigerant System

Production Details

Manufacturer
Subaru Corporation
Manufacturing Process
  • Injection Molding for Housing
  • Robotic Assembly for Coils
  • Precision Calibration for Sensors
Quality Control
Testing: Pressure Testing, Leak Detection, Performance Calibration
Standards: ISO 9001 Certified, OEM Specifications
Sustainability Practices
  • Recyclable Materials
  • Low-Emission Manufacturing
  • Energy-Efficient Production
Production Metrics
Units Per Year: 500,000
Defect Rate: 0.02%
Energy Consumption: 15 kWh per unit

Service Information for HVAC Service

Maintenance and service requirements specific to the HVAC system

15,000
12
  • Inspect and Replace Cabin Air Filter
  • Check Refrigerant Levels
  • Test Blower Motor Operation
  • Inspect Ducting for Obstructions

Ensure proper refrigerant type is used.

30,000
24
  • Clean Evaporator Coil
  • Inspect Compressor Function
  • Check Electrical Connections
  • Test Climate Control Sensors

Use diagnostic tools for sensor calibration.

60,000
48
  • Replace Refrigerant
  • Inspect and Lubricate Blower Motor
  • Check for System Leaks
  • Perform Full System Diagnostics

Major service requires specialized equipment.

Frequently Asked Questions

Find answers to common questions about torque specifications

Q1

Is the HVAC system compatible with all 2008-2014 Subaru WRX models?

The HVAC system is compatible with all 2008-2014 Subaru WRX models, including sedan and hatchback variants. It is designed to integrate seamlessly with the vehicle's existing electrical and mechanical systems. However, minor adjustments may be required for specific trims or aftermarket modifications. Always verify compatibility using your vehicle's VIN or consult a Subaru dealership for confirmation.

Q2

What are the maintenance requirements for the HVAC system?

The HVAC system requires regular maintenance to ensure optimal performance. Replace the cabin air filter every 12,000-15,000 miles or as recommended in your owner's manual. Inspect refrigerant levels annually and recharge if necessary. Clean the evaporator and condenser coils every 30,000 miles. Regularly check for leaks, unusual noises, or reduced airflow, and address issues promptly to avoid costly repairs.

Q3

How do I replace the cabin air filter in my 2008-2014 Subaru WRX?

To replace the cabin air filter, locate the filter housing behind the glove compartment. Open the glove box, remove the retaining clips, and gently lower the glove box. Unclip the filter housing cover, remove the old filter, and insert the new one, ensuring it is oriented correctly. Reassemble the housing and glove box. This process typically takes 10-15 minutes and requires no special tools.

Q4

What should I do if my HVAC system is not blowing cold air?

If your HVAC system is not blowing cold air, first check the refrigerant levels and recharge if low. Inspect the compressor for proper operation and ensure the condenser is not obstructed. Verify that the blower motor and controls are functioning correctly. If issues persist, inspect for leaks in the refrigerant lines or a faulty expansion valve. Consult a professional for complex diagnostics.

Q5

How can I optimize the performance of my HVAC system?

To optimize HVAC performance, ensure regular maintenance, including filter replacements and coil cleaning. Use high-quality refrigerant and ensure proper system pressure. Park in shaded areas to reduce heat buildup. Use recirculation mode in hot weather to cool the cabin faster. Regularly inspect and clean vents to maintain airflow. Consider upgrading to a high-performance cabin air filter for improved air quality.

Factory Service Resources

Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.

2008-2014 Subaru WRX HVAC Service Manual

Coming Soon

Detailed service manual covering HVAC system diagnostics, repair, and maintenance for 2008-2014 Subaru WRX models.

Subaru Technical Service Bulletin: HVAC System Updates

Coming Soon

Technical bulletin outlining updates and common issues for the HVAC system in 2008-2014 Subaru WRX models.

Subaru WRX HVAC Parts and Accessories Catalog

Coming Soon

Comprehensive catalog of OEM and aftermarket HVAC parts and accessories for 2008-2014 Subaru WRX models.

About the Author

Expert automotive knowledge and experience

Alan Montanye - Automotive Technical Specialist
ASE

Alan Montanye

Automotive Technical Specialist

ASE Master Certified Technician with over a decade of hands-on experience in automotive repair and diagnostics.

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