Bosch Washing Machine Model Number Decoding

Bosch washing machine model numbers can be perplexing, but understanding the structure can help clarify the differences between models. There are two types of model numbers in use today:

1. WAN28127 (used since 2018)
2. WGB244A40 (used from 2022)

Structure of Bosch Washing Machine Model Numbers

Each Bosch washing machine model number consists of four main blocks, each encoding specific information about the appliance:

1. Appliance Type Block:
   • W: Indicates the appliance is a washer or washer-dryer (derived from “Washer”).
2. Technical Block:
   • Contains details about the chassis, such as:
     • Type of motor and design
     • Controls: Type of control, Home Connect capabilities, dispenser type, and spin speed.
     • Type of washing machine: Whether it is freestanding or built-in.
3. Design Block:
   • Indicates the color of the washing machine, typically the color of the door since most washing machines are white.
4. Country Block:
   • This block indicates the country for which the washing machine is made. Note that this block is not present in the model codes of washing machines manufactured for Germany.

Decoding the First Type of Model Number (WAN28127)

This model number format has been standardized since 2018. Here’s how to decode it:

Example: WAN28127

1. W: Washing machine
2. A: Design features
   • A: Front loading with a standard depth of 60 cm
   • L: Front loading with a depth of 45 cm
   • I: Built-in
   • O: Top loading
   • U: Removable top cover, can be placed under the worktop by removing the cover
   • G: New series with increased energy efficiency (inverter motor)
3. N: Series or generation of the washing machine
   • 2015: K, E
   • 2016: Y, Q, T
   • 2018: S, W, L
   • 2019: V
   • 2020: J, N, U, X
   • 2021: G
   • 2022: A, B
4. 28: Spin speed
   • 20: 1000 rpm
   • 24: 1200 rpm
   • 28: 1400 rpm
   • 32: 1600 rpm
5. 12: Equipment and features (e.g., availability of i-DOC, type of control panel)
6. 7: Design (color of the door and controls)

Decoding the Second Type of Model Number (WGB244A40)

Introduced in 2022, this model number format reflects new chassis and provides more flexibility in identification.

Example: WGB244A40

1. W: Washing machine, denoting a household appliance for the care of laundry
2. G: Features and construction of the washing machine
   • A: Front loading with a standard depth of 60 cm
   • L: Front loading with a depth of 45 cm
   • I: Built-in
   • O: Top loading
   • U: Removable top cover
   • G: New range with increased energy efficiency
3. B: Chassis type and generation, including motor and drum type
   • 2015: K, E
   • 2016: Y, Q, T
   • 2018: S, W, L
   • 2019: V
   • 2020: J, N, U, X
   • 2021: G
   • 2022: A, B
4. 24: Model number indicating major design changes (first digit) and minor modifications (second digit)
5. 4: Maximum spin speed
   • 2: 1200 rpm
   • 4: 1400 rpm
   • 6: 1600 rpm
   • 8: 1800 rpm
6. A4: Technical data control type and additional functions
7. 0: Design symbol indicating the color of the door

Country Codes

For all countries except Germany, the model number includes two letters indicating the country where the washing machine will be sold. This helps limit warranty repair costs.