Bosch / Siemens Dishwasher Heat Pump & Circulation Motor – 12019637
The Bosch / Siemens Dishwasher Heat Pump and Circulation Motor 12019637 is a replacement pump-and-heater assembly designed for selected Bosch and Siemens dishwashers. This component circulates water through the dishwasher spray arms while the integrated heating element raises the water to the required programme temperature.
The heat pump plays an important role during the washing and rinsing stages. A faulty assembly may cause poor water circulation, insufficient heating, weak spray-arm performance, unusual pump noise or a programme that stops before completion.
Product Features
- OEM part number: 12019637
- Part type: Dishwasher circulation heat pump / wash motor and heater assembly
- Suitable for selected Bosch dishwashers
- Suitable for selected Siemens dishwashers
- Integrated water-circulation motor and heating element
- Circulates water through the dishwasher spray arms
- Heats the wash water to the required programme temperature
- Supplied as a complete heat-pump assembly with suction cap
- Suitable as a replacement for faulty, noisy, seized or non-heating circulation pumps
Common Symptoms This Part May Fix
- Dishwasher not heating the water
- Dishes remaining cold or wet after the programme
- Poor cleaning caused by weak water circulation
- Spray arms not rotating correctly
- Dishwasher filling but not beginning the main wash
- Circulation motor humming without pumping water
- Grinding, rattling or buzzing noise during washing
- Dishwasher stopping before the programme is complete
- E09 heating-related error appearing on applicable models
- E20 or E21 circulation-related error appearing on applicable models
Important Diagnostic Note
Heating and circulation errors may also be caused by damaged wiring, blocked water passages, a faulty control board, low water level or another electrical component. Test the pump, heater circuit and wiring before replacing the complete assembly.
Important Fitment Note
Bosch and Siemens dishwashers may use different heat pumps depending on the complete E-number and production index. Before ordering, confirm the 12019637 part number and compare the electrical connectors, hose connections, suction cap, mounting arrangement and pump housing with the original assembly.
Always check the complete appliance model number, including the digits after the slash. Machines with the same base model may use different components depending on the production version.
Disconnect the dishwasher from the electrical and water supplies before installation. Water remaining inside the sump and hoses should be drained before removing the pump assembly.
Bosch / Siemens Dishwasher Heat Pump 12019637
R2150,00
Bosch / Siemens Dishwasher Heat Pump & Circulation Motor – 12019637
The Bosch / Siemens Dishwasher Heat Pump and Circulation Motor 12019637 is a replacement pump-and-heater assembly designed for selected Bosch and Siemens dishwashers. This component circulates water through the dishwasher spray arms while the integrated heating element raises the water to the required programme temperature.
The heat pump plays an important role during the washing and rinsing stages. A faulty assembly may cause poor water circulation, insufficient heating, weak spray-arm performance, unusual pump noise or a programme that stops before completion.
Product Features
- OEM part number: 12019637
- Part type: Dishwasher circulation heat pump / wash motor and heater assembly
- Suitable for selected Bosch dishwashers
- Suitable for selected Siemens dishwashers
- Integrated water-circulation motor and heating element
- Circulates water through the dishwasher spray arms
- Heats the wash water to the required programme temperature
- Supplied as a complete heat-pump assembly with suction cap
- Suitable as a replacement for faulty, noisy, seized or non-heating circulation pumps
Common Symptoms This Part May Fix
- Dishwasher not heating the water
- Dishes remaining cold or wet after the programme
- Poor cleaning caused by weak water circulation
- Spray arms not rotating correctly
- Dishwasher filling but not beginning the main wash
- Circulation motor humming without pumping water
- Grinding, rattling or buzzing noise during washing
- Dishwasher stopping before the programme is complete
- E09 heating-related error appearing on applicable models
- E20 or E21 circulation-related error appearing on applicable models
Important Diagnostic Note
Heating and circulation errors may also be caused by damaged wiring, blocked water passages, a faulty control board, low water level or another electrical component. Test the pump, heater circuit and wiring before replacing the complete assembly.
Important Fitment Note
Bosch and Siemens dishwashers may use different heat pumps depending on the complete E-number and production index. Before ordering, confirm the 12019637 part number and compare the electrical connectors, hose connections, suction cap, mounting arrangement and pump housing with the original assembly.
Always check the complete appliance model number, including the digits after the slash. Machines with the same base model may use different components depending on the production version.
Disconnect the dishwasher from the electrical and water supplies before installation. Water remaining inside the sump and hoses should be drained before removing the pump assembly.
Unsure about compatibility with your machine? Please confirm compatibility before ordering. Send us your model number and we’ll confirm it for you.







