Welcome to the Daikin Developer Portal,
your hub for Daikin API integration, HVAC software development, and seamless smart HVAC solutions
Whether you're a developer working on HVAC API integration or an enterprise seeking advanced HVAC control systems, our platform is designed for you.
Dive into our comprehensive documentation, access powerful APIs, and leverage our resources to bring your innovative ideas to life. Join our developer community and unlock the full potential of Daikin’s API solutions.


Key features
Comprehensive documentation
Interactive API explorer
Easy integration
B2B business case validation
FOR INDIVIDUAL DEVELOPERS
Are you an individual developer building integrations for personal use or for a group of users? Explore our offerings and start creating building solutions.
ENTERPRISES OR ENERGY INTEGRATORS
Are you an enterprise working out business solutions? Together, let's take a closer look at your use cases and investigate how we can fulfill your needs.
You could also choose one of our API packages based on your use case and interest.

How does it work for individual developers?
- Log in to our Portal: To log in to the Developer Portal, you will need a Daikin Onecta account. If you already have an Onecta account from using the Onecta application, then you can use that one. If you do not yet have an Onecta account, then you can create one at the login page of the developer portal.
- Explore our API offering: The Daikin Developer Portal offers in-depth documentation on Daikin API integration, Onecta Cloud API, and best practices for HVAC software development. Developers or users of the integration must obtain individual API credentials via the self-service feature on the developer portal.
- Get your API credentials: With the Daikin Developer Portal, developers can easily access Daikin Onecta Cloud API for seamless HVAC API integration and control of Daikin devices. It allows you to obtain your own credentials with only a few clicks. These credentials are required to use our APIs.
How does it work for enterprises or energy integrators?
- Log in to our Portal: To log in to the Developer Portal, you will need a Daikin Onecta account. If you already have an Onecta account from using the Onecta application, then you can use that one. If you don't have an Onecta account yet, then you can create one at the login page of the developer portal.
- Explore our API offering: Our API portal provides in-depth documentation of our API offering, guidelines and integrations.
- Define your requirements and select the best Daikin API integration package to enhance your HVAC control systems and smart HVAC solutions.
- Get API credentials for development and start using the API: Create a development application using our API guidelines on the developer portal and start using our API.
- Request for business validation: We can have a close look at your business use case and validate your application.
- Establish a license agreement: Both parties sign an API agreement that includes all essential components and specifies the way forward.
- Get API credentials for production and distribute your integration: Once the agreement is signed and in place, you can create a production application and distribute the API amongst Onecta connected customers. Customers don't need dedicated/individual API credentials once the production application is verified.
Frequently Asked Questions
Private Developers – Yes, by accepting the “Daikin Developers Terms of Service” before creating your application on the developer portal.
Business Partners – Yes, by signing the “Daikin ONECTA Cloud API License Agreement”. Please contact Daikin for details.
Private Developers - Daikin doesn’t provide any code review or dedicated support.
Business Partners - Business partners can validate their HVAC software development projects by demonstrating their integration with the Onecta Cloud API in a live demo.
In-case of production, just create the application and once the Daikin ONECTA Cloud API License Agreement is signed, contact Daikin for further application configuration & validation process.
Private Developers - No, the default limit is 200 calls/day.
Business Partners - Default rate limit of 200 calls/user/day is provided.
For development application, based on request the rate limit can be increased to 1000 calls/user/day based.
For production application, it is default rate limit of 200 calls/user/day.
The API rate limit algorithm is implemented using a sliding window policy, which dynamically tracks and manages the number of requests made within specific time intervals.
In a sliding window approach, time is divided into consecutive intervals, often referred to as windows. Unlike a fixed window where the limit resets at regular intervals, the sliding window maintains a moving time frame that continuously shifts forward.
No, Daikin provides standard control and monitoring parameters at the moment.
ONECTA Cloud API is only intended for customers located within the EMEA region.