Subaru Subaru Legacy 2015-2019 HVAC Specifications
Subaru Subaru Legacy 2015-2019

Subaru Subaru Legacy 2015-2019 HVAC Specifications

Explore the comprehensive HVAC specifications for the 2015-2019 Subaru Legacy. Learn about system components, refrigerant capacity, and maintenance tips to keep your vehicle's climate control system running smoothly.

Updated

Overview Specifications

This document provides detailed specifications and information about the HVAC (Heating, Ventilation, and Air Conditioning) system in the 2015-2019 Subaru Legacy. It is designed to help users understand the system's features, functionality, and technical details. Use this guide to navigate through sections, search for specific information, and quickly reference key specifications.

How to Use

Use the search functionality to find specific terms or features within the document. Enter keywords related to the HVAC system, such as 'climate control' or 'airflow settings,' to locate relevant sections quickly.

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

Key Specifications

Heating Capacity

28,000 BTU/h

Cooling Capacity

14,000 BTU/h

Temperature Range

60°F to 90°F

Refrigerant Type

R-134a

Air Filter Type

HEPA + Carbon

Available Specifications

Climate Control System

This section covers the dual-zone automatic climate control system available in the 2015-2019 Subaru Legacy. It includes details on temperature regulation, airflow settings, and system controls.

Dual-Zone Temperature Control
  • Independent temperature settings for driver and front passenger
  • Temperature range: 60°F to 90°F (15°C to 32°C)
  • Automatic adjustment based on ambient conditions
  • Rear passenger vents with manual airflow control
Airflow Settings
  • Multiple airflow modes: face, feet, and windshield
  • Adjustable fan speed with automatic mode
  • Defrost function for windshield and side mirrors
  • Air recirculation mode for improved efficiency

Heating System

This section provides information on the heating components of the HVAC system, including the heater core, controls, and performance in cold weather conditions.

Heater Core and Performance
  • High-efficiency heater core for rapid warming
  • Heating capacity: up to 28,000 BTU/h
  • Compatible with engine coolant system
  • Optimal performance in temperatures as low as -22°F (-30°C)
Heating Controls
  • Integrated with climate control system
  • Adjustable heat distribution between zones
  • Automatic defrost and de-icing features
  • Steering wheel-mounted controls for convenience

Air Conditioning System

This section details the air conditioning system, including its cooling capacity, refrigerant type, and energy efficiency features.

Cooling Capacity
  • Cooling capacity: up to 14,000 BTU/h
  • Rapid cooling in high-temperature conditions
  • Automatic temperature regulation
  • Energy-saving eco mode available
Refrigerant and Efficiency
  • Uses R-134a refrigerant
  • Environmentally friendly and ozone-safe
  • Low power consumption for improved fuel efficiency
  • Automatic compressor cycling for optimal performance

Air Filtration System

This section explains the air filtration and purification features of the HVAC system, including cabin air filters and allergen reduction.

Cabin Air Filter
  • High-efficiency particulate air (HEPA) filter
  • Removes dust, pollen, and airborne particles
  • Replaceable filter with easy access
  • Recommended replacement interval: 12,000 miles or annually
Allergen Reduction
  • Activated carbon filter for odor reduction
  • Ionizer for improved air quality
  • Reduces allergens and bacteria in the cabin
  • Automatic air purification mode

Component Specifications

Overview

Type
Automatic Climate Control
Configuration
Dual-Zone
Platform
Integrated HVAC System
Material
High-Density Plastic and Aluminum
Location
Front Dashboard

Dimensions

Height
8.5 inches (21.6 cm)
Width
14.2 inches (36.1 cm)
Depth
6.3 inches (16 cm)
Duct Diameter
2.5 inches (6.35 cm)
Blower Motor Diameter
5.9 inches (15 cm)
Evaporator Core Length
12.8 inches (32.5 cm)
Condenser Core Length
15.7 inches (40 cm)

Materials

Housing
High-Density Plastic
Evaporator Core
Aluminum
Condenser Core
Aluminum
Blower Motor
Copper Windings with Steel Housing
Ducting
Reinforced Rubber

Features

Climate Control
  • Dual-Zone Temperature Control
  • Automatic Air Recirculation
  • Defrost Mode
  • Rear Defogger
Air Quality
  • Cabin Air Filter
  • Pollution Sensor
  • Ionizer
  • Odor Reduction
Ventilation
  • Adjustable Airflow Direction
  • Rear Seat Vents
  • Variable Fan Speeds
  • Auto Mode
Heating
  • Rapid Heating
  • Seat Heaters (Optional)
  • Defrost Priority
  • Temperature Memory
Cooling
  • Rapid Cooling
  • Eco Mode
  • Auto Defog
  • Temperature Memory

Safety Features

Overheat Protection
  • Automatic Shutoff
  • Temperature Sensors
Airflow Control
  • Dual-Zone Safety
  • Child Lock for Rear Controls
System Monitoring
  • Low Refrigerant Detection
  • Blower Motor Overload Protection

Comfort Features

Temperature Control
  • Precision Dual-Zone Control
  • Auto Mode
  • Memory Settings
Airflow Management
  • Adjustable Vents
  • Rear Seat Vents
  • Variable Fan Speeds
Noise Reduction
  • Quiet Blower Motor
  • Insulated Ducting
  • Vibration Dampening
Convenience
  • Remote Start Climate Control
  • Steering Wheel Controls
  • Touchscreen Interface

Accessories

Filters
  • Cabin Air Filter
  • Activated Carbon Filter
  • HEPA Filter (Optional)
Upgrades
  • Ionizer Kit
  • Rear Seat Climate Control
  • Heated Steering Wheel
Maintenance Tools
  • Refrigerant Recharge Kit
  • Blower Motor Tester
  • Duct Cleaning Kit

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 Core
  • Inspect Ducting for Leaks
Maintenance Notes
Use only OEM-approved refrigerants and filters for optimal performance.

Warranty

Basic
Years: 3
Miles: 36000
Coverage: Parts and Labor
Powertrain
Years: 5
Miles: 60000
Coverage: Compressor and Blower Motor
Emissions
Years: 8
Miles: 80000
Coverage: Refrigerant System
Corrosion
Years: 5
Miles: Unlimited
Coverage: HVAC Housing and Ducting

Production Details

Manufacturer
Subaru Corporation
Manufacturing Process
  • Automated Assembly
  • Precision Molding
  • Robotic Welding
Quality Control
Testing: Pressure Testing, Airflow Calibration, Temperature Accuracy
Certifications: ISO 9001, ISO 14001
Sustainability Practices
  • Recyclable Materials
  • Low-Emission Refrigerant
  • Energy-Efficient Production
Production Metrics
Units Per Year: 500000
Defect Rate: 0.02%
Energy Usage: 15 kWh per unit

Service Information for HVAC Service

Maintenance and service requirements specific to the HVAC system

15000
12
  • Inspect Refrigerant Levels
  • Replace Cabin Air Filter
  • Check Blower Motor Function
  • Clean Evaporator Core
  • Inspect Ducting for Leaks

Ensure proper refrigerant type is used for recharging.

30000
24
  • Test Compressor Performance
  • Inspect Condenser Core
  • Check Electrical Connections
  • Calibrate Temperature Sensors

Use diagnostic tools for accurate calibration.

60000
48
  • Replace Refrigerant
  • Inspect and Clean Condenser
  • Check Blower Motor Bearings
  • Test System for Leaks

Major service requires specialized equipment and training.

Frequently Asked Questions

Find answers to common questions about torque specifications

Q1

Is the HVAC system compatible with all 2015-2019 Subaru Legacy models?

The HVAC system is compatible with all 2015-2019 Subaru Legacy models, including the 2.5i, 2.5i Premium, 2.5i Limited, 3.6R Limited, and 3.6R Touring trims. It supports dual-zone automatic climate control in higher trims and manual controls in base models. Ensure your vehicle's software is updated to the latest version for optimal compatibility and performance.

Q2

What are the maintenance requirements for the HVAC system?

The HVAC system requires regular maintenance, including cabin air filter replacement every 12,000-15,000 miles or annually. Inspect refrigerant levels and system pressure every 30,000 miles. Clean the condenser and evaporator coils to prevent clogs. Check for leaks in the refrigerant lines and ensure the blower motor and fans are functioning properly. Follow the owner's manual for detailed maintenance schedules.

Q3

How do I replace the cabin air filter in a 2015-2019 Subaru Legacy?

To replace the cabin air filter, locate the filter housing behind the glove box. Open the glove box and remove the retaining clips. Push the sides of the glove box inward to release it. Open the filter housing cover, remove the old filter, and insert the new one with the airflow arrow pointing downward. Reassemble the glove box and secure the clips. This process takes about 10-15 minutes.

Q4

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

If the HVAC system is not blowing cold air, check the refrigerant levels and recharge if necessary. Inspect the compressor clutch for engagement and ensure the condenser is not blocked. Test the blower motor and fuses for functionality. If the issue persists, scan for diagnostic trouble codes (DTCs) using an OBD-II scanner to identify potential sensor or electrical issues.

Q5

How can I optimize the performance of my HVAC system?

To optimize HVAC performance, regularly clean or replace the cabin air filter. Ensure the refrigerant is at the correct level and the system is free of leaks. Use the recirculation mode in hot weather to cool the cabin faster. Park in shaded areas to reduce heat buildup. Schedule annual inspections to maintain system efficiency and address minor issues before they escalate.

Factory Service Resources

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

2015-2019 Subaru Legacy HVAC Service Manual

Coming Soon

Detailed service manual covering HVAC system components, diagnostics, and repair procedures for 2015-2019 Subaru Legacy models.

Subaru Technical Service Bulletin: HVAC System Updates

Coming Soon

Technical bulletin outlining software updates and common issues for the HVAC system in 2015-2019 Subaru Legacy vehicles.

Subaru Legacy HVAC Parts Catalog

Coming Soon

Comprehensive catalog of OEM HVAC parts and accessories for 2015-2019 Subaru Legacy models, including filters, compressors, and sensors.

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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