Mercedes Benz S Class W220 Air Conditioning Heater Matrix Unit Housing Box

Mercedes Benz S Class W220 Air Conditioning Heater Matrix Unit Housing Box is an original component from the Heat exchangers group, designed for the passenger cabin heating and cooling system. Designed specifically for the S-Class W220, the housing ensures proper airflow and stable seating of the heat exchanger in the rear left part of the vehicle, which translates into thermal comfort for passengers.

Specifications and technical data

• SKU: rhd-A2208300762
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2208300762
• Substitutable numbers: A2208300762, A 220 830 07 62, BG
• Location on the vehicle: Rear, Left
• Category: Heater Cores

Purpose and function in the air conditioning system

The presented housing is a central element of the heater and air conditioning module in the rear part of the cabin, on the left side. It is responsible for:

• stable mounting of the heat exchanger in the HVAC system,
• directing airflow through the heater core or evaporator,
• maintaining the tightness of air ducts in the rear zone of the vehicle,
• cooperation with the factory temperature control system for rear seat passengers.

Thanks to its fitment for this specific S-Class generation, the housing allows for maintaining an even temperature distribution in the luxury cabin without the need for modifications or adaptations.

Construction and fitment for Mercedes S‑Class W220

The heater housing has been designed as a structural element of the air conditioning system that works with air ducts, fans, and temperature sensors in the rear part of the body. Precise fitment for the Mercedes S‑Class W220 means compatibility with factory mounting points and proper alignment with other center console components and side covers.

The placement in the rear zone, on the left side, is important when planning a repair – the element is intended to work exactly in this part of the vehicle, which facilitates diagnosis and replacement in case of leaks, mechanical damage, or intervention in the rear seat heating system.

Benefits of using an original component

Using a factory heater housing in the S-Class W220 allows you to maintain air conditioning system performance parameters in accordance with the manufacturer's specifications. Key advantages include:

• compatibility with the factory HVAC system geometry, which reduces the risk of leaks and improper airflow,
• easier installation thanks to the mounting points provided by the manufacturer,
• maintaining the thermal comfort of rear seat passengers at the level expected in the premium segment,
• the ability to use existing ducts, seals, and mounts without additional modifications.

For workshops and users, this means shorter repair time and a lower risk of operational problems after installation.

Characteristics as a used OEM element

The heater housing comes from an original Mercedes air conditioning system and is a used element. This type of OEM part retains its factory geometry, which is particularly important in the complex ventilation systems of the S-Class. A used original component often represents a reasonable compromise between cost and maintaining full compatibility with the vehicle's installation.

If you are considering a choice between a used part and a replacement, it is worth reading the practical tips found in the article 5 reasons why a used OEM part is a better choice than a replacement.

Expansion of the heating and air conditioning system in Mercedes

If you are planning a comprehensive repair or upgrade of the thermal comfort zone in your Mercedes and need other elements from the same group, such as additional heater modules, evaporator housings, or air duct elements, check the available parts in the Mercedes Heat exchangers category.

Summary

Mercedes Benz S Class W220 Air Conditioning Heater Matrix Unit Housing Box is a technically matched HVAC system element that allows you to restore proper airflow and the functioning of heating and cooling in the rear part of the cabin. Choosing an original component from the Heat exchangers group facilitates installation, supports the reliability of the entire system, and helps maintain the high travel comfort characteristic of the S-Class.