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Bosch interfaces

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Why you should use Bosch interfaces

Interfaces are the foundation of modern, networked systems. They enable the connection of devices, software applications and platforms, the structured exchange of data and the use of functions across different systems.

For developers, integrators, and system partners, interfaces create the conditions for the efficient integration of heat generators, energy management systems, and smart home solutions into existing applications. This enables the automation of processes, improved data analysis, and the targeted expansion of digital services.

Depending on the application, interfaces support a wide range of requirements – from local device communication to the integration of cloud-based systems. This enables flexible solutions for monitoring, control, optimization, and service.

Advantages of interfaces at a glance:

  • Improved connectivity: Devices, platforms and applications can be connected more easily.
  • Increased efficiency: Data can be processed automatically and processes optimized.
  • Greater transparency: Operating states, consumption data and errors can be tracked more effectively.
  • Greater flexibility: Systems can be adapted to different requirements and use cases.
  • Greater future-proofing: New functions and external solutions can be integrated more easily.

Which interfaces does Bosch offer?

Bosch offers a wide range of interfaces for different target groups and use cases. These include solutions for end customers as well as professional interfaces for specialized partners, integrators and developers.

For end customers: Interfaces such as Open API, EEBus, and Matter are available for integration into energy and smart home systems. They enable convenient networking of devices and form the basis for intelligent applications in the home.

For professionals: For technically demanding integrations, Bosch offers professional interfaces such as Local API, Cloud REST API, KNX, and Modbus RTU. These are suitable for applications where systems need to be deeply integrated, data needs to be further processed, or functions need to be incorporated into higher-level platforms. With this interface portfolio, Bosch supports both simple network solutions and complex integrations into energy, building and management systems.

Are you interested in our interfaces?

Then contact us:

For any questions regarding our interfaces, please feel free to contact us:

hcpartnermanagement@de.bosch.com

Our Interfaces

for professsionals (1-4) and end customers (5-8)

Partner compatibility overview

Third-party energy management systems*

*A detailed compatibility overview as well as information on the functionalities can be found on the respective partner pages.

Smart home systems

Smart meter gateways

API

What is an API interface?

An API interface is a standardized connection that enables communication between different software applications, devices, and platforms. It defines how data is requested, transferred, and processed. For developers, APIs form the central basis for system integration. They enable the automated provision of information, the use of functions from other systems, and the efficient linking of applications. API interfaces thus create the technical foundation for integrating devices, software solutions, and digital services into existing systems and for reliable data exchange.

Which API interfaces does Bosch offer?

Bosch offers both a web and a local REST API.

Local APIs are directly accessible on a device or within a closed network. They are suitable for applications where systems are locally connected and data is processed directly on-site.

Web APIs are accessible via the internet. They enable the connection of external applications, platforms, and cloud services. This allows data to be accessed regardless of location and functions to be flexibly integrated into higher-level systems.

Partner Web API

Description

The Partner Web API is suitable for scalable, networked applications that integrate device and system data across different platforms – perfect for specialized partners, platform providers, or complex service solutions.

Features:

  • Accessible via the internet: Devices only need to be online – no additional on-site hardware is required.
  • Easy implementation: A unified interface for various device types thanks to abstraction of complexity.
  • Advanced functionality: Access to web-based features such as data analytics, pricing tables, and more.
  • Rapid updates: New features and improvements can be deployed centrally.
  • Reduced integration effort: Less effort compared to on-premises solutions.
  • Efficient data delivery: Event-driven communication via webhooks.
  • Partner program: We support you with your integration.
  • Ongoing costs and annual fees

Supported Use Cases

Remote commissioning and parameterization

  • Remote access to devices during commissioning and for optimization
  • System optimization

Monitoring and service

  • Remote monitoring for trouble-free operation with error messages

  • Remote access for troubleshooting and maintenance
  • Scheduling service visits

Energy management

  • Monitoring energy consumption
  • Optimizing self-consumption of PV electricity

Requirements

1. Heat generator

2. K30/K40 Gateway

3. Access to Bosch HomeCom Pro

4. Your own backend on the partner's website

Compatible heat generators

  • All Bosch heat pumps in combination with the K30 RF or K40 RF internet gateway
  • All Bosch gas and oil heating appliances in combination with the Internet gateway K21 RF, K30 RF or K40 RF

Are you interested?

If you have any questions about our interfaces, please feel free to contact us:

hcpartnermanagement@de.bosch.com

Partner Local API

Description and benefits

The Partner Local API enables fast, stable, and internet-independent integration and is ideal for professional applications, local energy management systems, and installers with high reliability requirements. Features:

  • Available directly on a device or within a closed network – works without a public internet connection.
  • More resilient to service outages and attacks from the public internet.
  • No ongoing costs
  • Operation is still possible even after the gateway and the E/O service are switched off.
  • Partner program : We support you in your integration.

Supported Use Cases

Remote commissioning and parameterization

  • Remote access to devices during commissioning and system optimization
  • Remote commissioning and parameterization

Monitoring and service

  • Remote monitoring for trouble-free operation with error messages
  • Remote access for troubleshooting and maintenance
  • Scheduling an appointment for service visits
  • Error messages

Energy management

  • Monitoring energy consumption
  • Optimization of self-consumption of PV electricity; heat pump control according to dynamic electricity tariffs
  • Power limitation according to §14a EnWG (Energy Industry Act)

Smart Home

  • Time programs for heating and hot water
  • Set room temperature
  • Temporary noise reduction of the heat pump's "grill mode"

Requirements

1. Air-to-water heat pumps

2. K40 Gateway

3. Exchange of (software) certificates for access

4. Hardware on partner side: Compatible heat generators

Compatible heat generators

  • Air-to-water heat pumps in combination with the K40 RF internet gateway
  • CS 5(6)800 AW, CS 3800 AW, CS 8800 AW, Cascade
  • Hybrid-capable and hybrid-integrated devices with K40 RF
  • C5800, 7800, 9800, CSH 5800

Are you interested?

If you have any questions about our interfaces, please feel free to contact us:

hcpartnermanagement@de.bosch.com

KNX

Available from September 2026

What is KNX?

  • KNX is a globally recognized, open standard for the intelligent networking and automation of building technology.
  • KNX enables a wide variety of devices and functions from different manufacturers to communicate with each other and be centrally controlled.
  • KNX is extremely versatile and is used in both private homes and commercial buildings such as offices, hotels and hospitals.

Description

  • Robust and well-known protocol
  • Easy to implement, vendor-independent, open standard with broad support
  • High interoperability: Many certified devices available
  • Energy efficiency: Optimized control saves energy
  • No ongoing costs

Supported Use Cases

Supported Use Cases

  • Efficient, room-by-room temperature control. For example, the heating can be automatically turned down when no one is home or the windows are open.
  • KNX plays an increasingly important role as a central control point for all energy flows within a building.
  • Monitoring and optimization of energy consumption through the intelligent networking of consumers, electricity producers (e.g. photovoltaics) and storage systems.
  • Integration of smoke detectors, window and door contacts, and alarm systems.

For use with Bosch heat pumps

1. Air or brine-to-water heat pumps

2. K40 RF Internet Gateway

3. Bosch KNX 20 module

4. Customer-provided/third-party hardware

Compatible heat pumps

Bosch heat pumps with K40 radio gateway: CS3800 AW, CS5800/6800 AW, CS5801 AW, CS8800 AW, CS7801 LW

Downloads for Bosch heat pumps

For use with split air conditioners

  • Split air conditioner
  • Network module MC R / MC R-1*
  • *Only for CL3000i/CL3200i/CL6000i/CL7000i, not required for light commercial vehicles
  • Compatible third-party KNX module (provided by the customer) from Intesis
  • Customer-provided/third-party hardware

Compatible split air conditioners

CL3000i/CL3200i and CL7000i with MC R, CL6000i with MC R-1, split air conditioners with indoor unit for light commercial buildings 4CC, 4C, CF, CN, D

Downloads for split air conditioners

Modbus RTU

Available from January 2027

General information

Modbus RTU is a widely used industrial communication protocol for serial data transmission between devices. It belongs to the Modbus protocol family, which was originally developed for automation. Data transmission occurs in a compact binary format, enabling fast and efficient communication.

Description

  • Robust and well-known protocol
  • Easy to implement
  • Potentially large number of data points
  • No certification required
  • There are no security issues, as only 2 local lines are used.
  • No ongoing costs

Supported Use Cases

Remote parameterization

  • Remote access to devices during commissioning and system optimization
  • Remote system optimization during operation

Monitoring and service

  • Remote monitoring for trouble-free operation with error messages
  • Remote access for troubleshooting and maintenance, scheduling of service visits
  • Error messages

Energy management

  • Monitoring energy consumption
  • Optimizing self-consumption of PV electricity
  • Heat pump control according to dynamic electricity tariffs

Use with Bosch heat pumps

Requirements

1. Air-to-water heat pumps and brine-to-water heat pumps

2. Internet Gateway K40 RF

3. Bosch Modbus 20 module (RTU)

4. Customer-side/third-party hardware

Compatible heat pumps

Bosch heat pumps with Gateway K40 RF: CS3800 AW, CS5800/6800 AW, CS5801 AW, CS8800 AW, CS7801 LW

Downloads for Bosch heat pumps

For use with split air conditioners

CL3000i, CL3200i and CL7000i with MC R, CL6000i with MC R-1, split air conditioners with indoor unit for light commercial buildings 4CC, 4C, CF, CN, D

Downloads for Bosch split air conditioners

Open Web API

Available from software version v15.00.01

Description

  • The Open Web API in REST design is aimed at end users who want to integrate their Bosch heat generator via the internet into private ecosystems, smart home systems, or IoT platforms (such as Home Assistant). No deeper technical expertise is required for this.
  • Properties:
  • Accessible via the internet: Devices only need to be online – additional hardware on-site is not required.
    Fast updates: New functions and improvements can be deployed centrally.
    Lower integration effort: Less effort compared to local solutions.
    No ongoing costs: The Open Web API is provided to end users free of charge.
  • Monitoring
  • Direct access to system data via simple API call
    Opportunity for integration into own home systems
  • Controlling
  • Control options through write data points
    Opportunity to create automations in own home systems

Requirement

1. Heat generator

2. K40 RF Gateway

Compatible heat pumps

All Bosch heat pumps in combination with internet gateway K40 RF -> CS 5(6)800 AW, CS 3800 AW, CS 8800 AW, CS 7800 AW, CS 5801 AW

Open Local API (read)

Available from software version v15.00.01

Description

  • The Open Local API is exceptionally simple, modern, and user-friendly. It was developed for end users and smart home providers who want to easily integrate devices into existing systems – without in-depth technical knowledge and with rapid integration into standard applications. Features:
  • Available directly on the device or within a closed network – works without a public internet connection.
  • No ongoing costs
  • Query system data points via a simple, local interface

Supported Use Cases

surveillance

  • Direct access to system data via a simple API call
  • Option for integration into customer-specific home systems

Requirement

1. Heat generator

2. K40 RF/ K21 Gateway

Compatible heat pumps

• All Bosch heat pumps in combination with Internet gateway K40 RF – CS 5(6)800 AW, CS 3800 AW, CS 8800 AW, CS 7800 AW, CS 5801 AW

• All Bosch gas boilers in combination with Internet Gateway K40 RF or K21

Documentation

EEBus

General information

What is EEBus?

EEBus is a communication protocol for energy management applications in the areas of household appliances, heating and ventilation systems, and electromobility. It enables intelligent communication between household appliances, electric vehicles, heat pumps, energy generators, storage systems, energy management systems (EMS), and smart meter gateways. EEBus acts as a common language that connects a wide variety of electrical building components across different sectors.

Description

EEBUS communication takes place via a network, either wired or via Wi-Fi. Typically, a central home energy management system (HEMS) communicates via EEBUS with all connected components, such as the heat pump, wallbox, or smart meter gateway. Alternatively, EEBUS-enabled devices can communicate directly with the smart meter gateway to implement power limits according to Section 14a. Particular emphasis is placed on IT security to prevent unauthorized access. EEBUS is based on defined use cases that regulate data exchange between different components and define the behavior of participants in specific scenarios. One example of this is power limiting according to Section 14a (LPC).

A detailed overview of the use cases can be found on theEEBUS websiteThe

Use cases supported by Bosch

Power Limiting (LPC)

  • Goal : To protect local network stability

Mechanism:Ensure that the heat pump complies with the power limit specified by the Smart Meter Gateway (SMGW) or a third-party energy management system (EMS) (LPC takes precedence over comfort).

Performance Monitoring (MPC)

  • Goal : Transparency regarding electricity generation and consumption

Mechanism: Forwarding the electricity consumption value of the heat pump to the Smart Meter Gateway (SMGW) or a third-party energy management system (EMS).

Optimization of PV self-consumption (OHPCF)

  • Goal : Optimization of self-consumption of PV power using a heat pump


Mechanism:Transmission of a power sequence to the energy management system (EMS), which controls the available flexibility (based on the PV surplus).



Requirements

1. Air-to-water heat pumps and brine-to-water heat pumps as well as hybrid systems

2. Internet Gateway K40 RF

3. FNN control unit / hardware is provided by the partner.

Compatible heat generators

Heat pumps

  • CS 7001i/ 7400i AW

    outdoor unit
    v01.22
    Control Panel (from version)
    HPC 400, NF 73.06
    Supported Use Cases
    Restriction according to Section 14a EnWG (LPC, MPC)
  • CS 5(6)800i AW

    outdoor unit
    v07.10
    Control Panel (from version)
    UI 800, NF 47.09
    Supported Use Cases
    Shutdown according to Section 14a EnWG (LPC, MPC) and optimization of PV self-consumption (OHPCF)
  • CS7800i LW

    outdoor unit
    v03.06
    Control Panel (from version)
    UI 800, NF 47.09
    Supported Use Cases
    Restriction according to Section 14a EnWG (LPC, MPC)
  • CS3400i AW

    outdoor unit
    v02.03
    Control Panel (from version)
    HPC 400, NF 73.06
    Supported Use Cases
    Restriction according to Section 14a EnWG (LPC, MPC)
  • CS3800i AW

    Supported Use Cases
    Shutdown according to Section 14a EnWG (LPC, MPC) and optimization of PV self-consumption (OHPCF)
  • CS8800i AW

    Supported Use Cases
    Shutdown according to Section 14a EnWG (LPC, MPC) and optimization of PV self-consumption (OHPCF)
  • cascade

    Supported Use Cases
    Shutdown according to Section 14a EnWG (LPC, MPC) and optimization of PV self-consumption (OHPCF)

Hybrid systems

  • Hybrid package with Bosch Hybrid Manager

    Outdoor unit (from version)
    v06.06
    Control Panel (from version)
    CW 400, NF 47.06
    Supported Use Cases Restriction according to Section 14a EnWG (LPC, MPC)
  • Hybrid package with Bosch Hybrid Manager

    Outdoor unit (from version)
    v06.06
    Control Panel (from version)
    UI 800, NF 49.09
    Supported Use Cases Restriction according to Section 14a EnWG (LPC, MPC)

commissioning

Matter

General information

Matter is the open, cross-manufacturer connectivity standard for the connected home – developed and supported by over 600 companies, including Apple, Google, Amazon, Samsung, and Bosch. It ensures reliable communication between devices from different manufacturers, regardless of whether the focus is on comfort, security, or energy efficiency.

Description

  • One standard, many devices – Whether lighting, sensors, wallbox, heat pump, or solar system: Matter-certified devices speak the same language and work together seamlessly.
  • Intelligent energy management – Matter makes it possible to control energy flows in the household centrally and across systems: solar systems, battery storage, heat pumps, water heaters, and EV charging stations coordinate automatically – based on electricity prices, self-consumption, and grid load.
  • Simple setup – Scan the QR code, connect the device, done. No separate apps or accounts for each manufacturer.
  • Platform independence – Control all Matter devices via the platform of your choice – Apple Home, Google Home, Amazon Alexa, or specialized energy management systems (HEMS).
  • Security & privacy – Encryption and local data processing are built directly into the standard. Your data stays in your home.
  • Technological advancement: Constantly growing potential. The standard is continuously being expanded to include energy management use cases; scenarios such as bidirectional charging are currently being worked on.

Supported Use Cases

Lighting & Switches – Lamps, Dimmers, Push Buttons, Sockets

Security – door locks, contact sensors, smoke and carbon monoxide detectors, cameras

Shading & Covering – Roller Shutters, Blinds, Awnings

Climate & Indoor Comfort – Thermostats, Air Conditioners, Air Purifiers, Fans

Energy management – ​​solar systems, battery storage, heat pumps, wallboxes, dynamic electricity tariffs

Sensors – temperature, humidity, air quality, occupancy, water leakage and much more

Household appliances – refrigerator, washing machine, dishwasher, oven, robot vacuum cleaner

media– Speakers, video players, remote controls

Requirements

A Wi-Fi network – Matter communicates via your existing home network (Wi-Fi or Ethernet).

A smartphone or tablet – setup via QR code (iOS or Android).

A compatible controller – such as an Apple HomePod, Amazon Echo, Google Nest Hub, or a dedicated energy management system – controls your devices and enables automation. The good news is that controllers are increasingly being integrated into devices you may already own, such as smart TVs, speakers, or Wi-Fi routers. The number of such devices is constantly growing.

For Thread devices:Thread Border Router – This is already integrated into many current controllers.

Compatible heat generators

  • Bosch air purifiers : Air 2000i, Air 4000i and Air 6000i
  • Single-split air conditioners : Climate 7000i