BMW 440i 2017-present

BMW 440i 2017-present HVAC Specifications

Detailed technical specifications and performance metrics for the HVAC system in the 2017-Present BMW 440i. Includes component details, refrigerant types, and diagnostic procedures.

Updated Oct 24, 2023

Overview Specifications

Comprehensive description of the HVAC specifications for the 2017-Present BMW 440i, including key features, measurements, and technical details. This section provides detailed insights into the heating, ventilation, and air conditioning system, ensuring optimal performance and comfort.

How to Use

Use the search function to locate specific HVAC specifications by entering keywords such as 'blower motor', 'refrigerant capacity', or 'temperature control'.

Navigate through the HVAC documentation sections using the table of contents or by scrolling through the document. Each major section is clearly labeled for easy access.

Key Specifications

Refrigerant Capacity

18.5 oz (525 g)

Heater Output

5.5 kW at 194°F (90°C)

Cooling Capacity

12,000 BTU/h (3.5 kW)

Airflow Capacity

400 to 600 CFM

Auxiliary Heater Output

1.5 kW

Available Specifications

Climate Control System

Details about the automatic climate control system, including its components and functionality.

Automatic Temperature Control

Dual-zone automatic climate control system
Temperature range: 60°F to 84°F (15.5°C to 28.9°C)
Precision control with 0.5°F (0.3°C) increments
Integrated humidity and air quality sensors

Air Distribution System

Multi-level air vents with adjustable flow direction
Airflow capacity: 400 to 600 cubic feet per minute (CFM)
Automatic recirculation mode for improved air quality
Dual blower motors for independent zone control

Note: The air distribution system is designed to minimize noise while maximizing efficiency.

Heating System

Technical specifications and features of the heating system, including performance metrics.

Heater Core

High-efficiency aluminum heater core
Heat output: 5.5 kW at 194°F (90°C) coolant temperature
Rapid warm-up time: 3-5 minutes in cold conditions
Integrated thermostat for precise temperature regulation

Auxiliary Heating

Electric auxiliary heater with 1.5 kW output
Activation temperature: below 41°F (5°C)
Energy-efficient operation with minimal battery drain
Automatic deactivation above 50°F (10°C)

Note: The auxiliary heating system is ideal for cold climates and improves cabin comfort during engine warm-up.

Air Conditioning System

Detailed information about the air conditioning system, including refrigerant specifications and cooling performance.

Refrigerant System

Refrigerant type: R-1234yf
Refrigerant capacity: 18.5 oz (525 g)
Operating pressure: 150-300 psi (10.3-20.7 bar)
Environmentally friendly with low global warming potential (GWP)

Cooling Performance

Maximum cooling capacity: 12,000 BTU/h (3.5 kW)
Cabin temperature reduction: 20°F (11°C) in 5 minutes
Variable compressor with electronic control
Energy-saving eco mode for reduced fuel consumption

Note: The air conditioning system is optimized for both performance and energy efficiency.

Ventilation and Air Quality

Features and specifications related to cabin ventilation and air quality management.

Air Filtration System

High-efficiency particulate air (HEPA) filter
Filter replacement interval: 15,000 miles (24,000 km)
Removes 99.97% of airborne particles
Activated carbon layer for odor reduction

Ventilation Modes

Four ventilation modes: Auto, Max, Eco, and Manual
Adjustable fan speed: 1 to 7 levels
Defrost mode with rapid windshield clearing
Footwell and upper body ventilation options

Note: The ventilation system ensures consistent airflow distribution for enhanced comfort.

Search Specifications

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Component Specifications

General Specifications

System Type: Automatic Climate Control

Refrigerant Type: R-1234yf

Refrigerant Capacity: 500 ± 20 g

Compressor Type: Variable Displacement

Blower Motor Type: Electronically Controlled

Airflow Capacity: Up to 1000 m³/h

Temperature Control

Temperature Range: 16°C to 32°C

Temperature Resolution: 0.5°C

Dual Zone Control: true

Rear Seat Control: false

Sensor Accuracy: ±0.5°C

Air Distribution

Vent Modes

Face
Foot
Defrost
Auto

Airflow Direction Adjustment: Manual and Automatic

Rear Vent Airflow: Fixed

Defrost Time: 3-5 minutes at full power

Filtration System

Filter Type: Cabin Microfilter with Activated Carbon

Filter Part Number: 64 31 9 388 123

Filter Replacement interval: Every 15,000 miles or 12 months

Filter Efficiency: 99% for particles > 0.3 microns

Compressor Specifications

Compressor Part Number: 64 51 9 388 456

Displacement: 120 cc

Maximum Pressure: 30 bar

Oil Type: PAG 46

Oil Capacity: 150 ± 10 ml

Condenser Specifications

Condenser Part Number: 64 51 9 388 789

Material: Aluminum

Core Thickness: 16 mm

Pressure Rating: 35 bar

Cooling Capacity: 8 kW

Evaporator Specifications

Evaporator Part Number: 64 51 9 388 321

Material: Aluminum

Core Thickness: 12 mm

Cooling Capacity: 5 kW

Pressure Rating: 25 bar

Blower Motor Specifications

Blower Motor Part Number: 64 11 9 388 654

Power Rating: 200 W

Voltage: 12 V

Speed Range: 0 to 100% in 10% increments

Noise Level: < 50 dB at max speed

Diagnostic Specifications

Diagnostic Port: OBD-II

Fault Codes

P0532
P0533
P0534
P0535

Self Diagnosis: true

Diagnostic interval: Every ignition cycle

Error Tolerance: ±2%

Operational Limits

Maximum Ambient Temperature: 50°C

Minimum Ambient Temperature: -30°C

Maximum System Pressure: 35 bar

Minimum System Pressure: 1 bar

Maximum Compressor Speed: 6000 rpm

Service Information Service

Detailed service requirements and schedules for the HVAC system

15,000

Replace cabin microfilter
Inspect refrigerant level
Check compressor belt tension

Service intervals may vary based on driving conditions

30,000

Inspect condenser for debris
Check blower motor operation
Verify temperature sensor calibration

Perform a full system diagnostic if issues are detected

60,000

Replace refrigerant
Inspect evaporator for leaks
Check all electrical connections

Use only BMW-approved refrigerant and lubricants

Frequently Asked Questions

Find answers to common questions about torque specifications

What is the refrigerant type and capacity for the 2017-Present BMW 440i HVAC system?

The HVAC system in the 2017-Present BMW 440i uses R-1234yf refrigerant. The total system capacity is approximately 525 grams (18.5 ounces). Always ensure the refrigerant is handled by a certified technician to avoid system damage or safety hazards.

What is the recommended cabin air filter replacement interval for the BMW 440i?

The cabin air filter should be replaced every 15,000 to 20,000 miles or at least once a year, depending on driving conditions. A clogged filter can reduce HVAC efficiency and air quality.

How does the automatic climate control system work in the BMW 440i?

The automatic climate control system uses sensors to monitor cabin temperature, sunlight intensity, and humidity. It adjusts fan speed, air distribution, and temperature settings automatically to maintain the desired comfort level. The system also includes a microfilter to improve air quality.

What are the common symptoms of a failing HVAC blower motor in the BMW 440i?

Common symptoms include unusual noises (whirring or grinding), reduced airflow, or complete failure of the blower motor. If these issues occur, the blower motor or its resistor may need replacement. Always consult a certified technician for diagnosis and repair.

Can I retrofit the HVAC system in my BMW 440i to support newer refrigerants?

No, retrofitting the HVAC system to support different refrigerants is not recommended. The system is specifically designed for R-1234yf, and using incompatible refrigerants can damage components, void warranties, and pose safety risks.

Factory Service Resources

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

BMW HVAC System Maintenance Guide

Coming Soon

A detailed guide on maintaining the HVAC system, including filter replacement, refrigerant handling, and troubleshooting tips.

BMW 440i Owner's Manual

Coming Soon

The official owner's manual for the BMW 440i, including HVAC system operation, settings, and maintenance recommendations.

BMW Genuine Parts Catalog

Coming Soon

Access the official BMW parts catalog to find genuine HVAC components, including filters, blower motors, and refrigerant.

BMW Service Bulletins for HVAC Systems

Coming Soon

A collection of service bulletins related to HVAC system updates, recalls, and common issues for the BMW 440i.

About the Author

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