Does Nest Work with Daikin?

Nest thermostats can work with Daikin systems, but there are some compatibility considerations to keep in mind. According to the Nest compatibility checker, systems that are incompatible with Nest thermostats include those with wired remote sensors, micro-controller based systems, zone relay or control panels, and incompatible system wiring.

Compatibility Considerations for Daikin Systems

For Daikin systems specifically, there are some additional considerations. According to a Reddit post, some Daikin units have proprietary wiring that requires an adapter to even talk to their own thermostats, which are rebranded Ecobees with DC instead of AC power. However, it is possible to alter an existing Daikin to work off of a non-proprietary thermostat like a Nest, but you will lose much of the function that these smart programmable thermostats provide using their serial connections.

Proprietary Wiring and Adapters

Daikin units with proprietary wiring require an adapter to communicate with their own thermostats, which are rebranded Ecobees with DC power instead of AC. This proprietary wiring can be a significant barrier to using a Nest thermostat with a Daikin system.

Daikin Unit Adapter Required
Daikin FTX-N Series Daikin BRP069A41 Adapter
Daikin FTX-U Series Daikin BRP069A43 Adapter

To use a Nest thermostat with a Daikin system, you may need to modify the existing wiring and install a compatible adapter. This process can be complex and may require the expertise of a certified HVAC technician.

Losing Functionality with Non-Proprietary Thermostats

Even if you are able to alter a Daikin system to work with a non-proprietary thermostat like a Nest, you may lose some of the advanced functionality that the Daikin-specific thermostats provide. This includes features like:

  1. Efficient inverter function
  2. Dynamic target temperature control
  3. Precise temperature and humidity monitoring
  4. Advanced energy-saving modes

The loss of these features may impact the overall performance and efficiency of your Daikin system when using a Nest thermostat.

Nest Thermostat Technical Specifications

does nest work with daikinImage source: Daikin Air Conditioner Outdoor by Dinkun Chen

In terms of technical specifications, Nest thermostats work with most 24V systems, including those that use natural gas, oil, and electricity. They are compatible with systems that have:

  • One or two stages of cooling
  • One stage of heating
  • An additional stage of either heating or cooling

To ensure compatibility, it is recommended to use the Nest compatibility checker and consult with a certified HVAC technician.

Hands-On Guide for Integrating Nest with Daikin

  1. Verify Compatibility: Use the Nest compatibility checker to confirm that your Daikin system is compatible with a Nest thermostat. This will help you identify any potential issues or limitations.

  2. Identify Proprietary Wiring: Examine your Daikin unit’s wiring and determine if it uses proprietary connections. If so, you will need to install a compatible adapter, such as the Daikin BRP069A41 or BRP069A43, to facilitate communication between the Nest and Daikin system.

  3. Modify Wiring: If your Daikin system is compatible with a non-proprietary thermostat, you can proceed to modify the existing wiring to connect the Nest thermostat. This may involve disconnecting the Daikin-specific thermostat and connecting the Nest thermostat to the appropriate terminals.

  4. Configure Nest Thermostat: Follow the Nest thermostat’s installation and setup instructions to properly configure it for your Daikin system. This may include setting the correct number of heating and cooling stages, as well as any other system-specific settings.

  5. Test and Verify Operation: Once the Nest thermostat is installed and configured, test the system’s operation to ensure that all functions are working as expected. Monitor the system’s performance and make any necessary adjustments to optimize its efficiency.

  6. Consult HVAC Technician: If you encounter any issues or have concerns about the integration process, it is recommended to consult with a certified HVAC technician. They can provide expert guidance and ensure that the Nest-Daikin integration is performed safely and effectively.

Remember, the integration process may vary depending on the specific Daikin model and the complexity of your HVAC system. It is essential to follow the manufacturer’s instructions and safety guidelines to ensure a successful and safe installation.


Nest thermostats can work with Daikin systems, but the integration process may require additional considerations and modifications. Understanding the compatibility requirements, proprietary wiring, and potential loss of functionality are crucial when attempting to use a Nest thermostat with a Daikin HVAC system. By following the steps outlined in this guide and consulting with a certified HVAC technician, you can successfully integrate a Nest thermostat with your Daikin system and enjoy the benefits of a smart, energy-efficient home climate control solution.