---
title: "Duco"
description: "Duco is a built-in integration for Home Assistant. It has 134 installs sharing analytics and works locally."
canonical: "https://vulpo.app/integrations/core/duco"
url: "https://vulpo.app/integrations/core/duco.md"
last-updated: "2026-10-22"
version: "1.4"
---

# Duco

> Duco is a built-in integration for Home Assistant. It has 134 installs sharing analytics and works locally.

Duco is a built-in integration that connects Home Assistant to a Duco ventilation box over the local network. It adds fans, selects, numbers, switches, binary sensors and sensors for the ventilation system. Sensors cover exhaust, extract, outdoor and supply air temperature, remaining filter life, CO2 and humidity air quality indexes, target flow level and state end time. Binary sensors report the filter, sun control, ventilation and ventilation cooling, a select sets the ventilation state, and a switch triggers identify. Home Assistant can discover the box on the network and offer to add it, and setup is done in the UI with the host address. New devices appear on their own, and devices that are gone are removed automatically.

Automatic summary of Home Assistant's source code. Something wrong? [Get in touch](https://vulpo.app/contact)

[Open in My Home Assistant](https://my.home-assistant.io/redirect/config_flow_start/?domain=duco)

## Supports

- **Works locally**: Talks to your devices on your own network. No vendor cloud in between.
- **Set up in the UI**: Add it in Settings, Devices and services. Nothing to download.
- **Found by itself**: Home Assistant spots it on the network and offers to add it.
- **Adds new devices**: New devices show up without setting it up again.
- **Cleans up devices**: Devices that are gone are removed by themselves.
- **Change settings later**: Its connection settings can change without removing it.
- **Platinum quality**: Home Assistant's own rating of its code and setup experience.
- **Updated with Home Assistant**: Ships and updates with every Home Assistant release.

## Setting it up

Home Assistant usually finds it on the network and offers to add it. It can also be added by hand under Settings, Devices and services.

### Connect

- **Host**: IP address or hostname of your Duco ventilation box.

Also asked when changing the connection.

Texts from Home Assistant's source code, [Apache License 2.0](https://www.apache.org/licenses/LICENSE-2.0).

## Entities

- **Binary sensors**: Filter, Sun control, Ventilation, Ventilation cooling
- **Selects**: Ventilation state
- **Sensors**: Exhaust air temperature, Extract air temperature, Filter remaining, CO2 air quality index, Humidity air quality index, Outdoor air temperature, Supply air temperature, Target flow level, State end time, Ventilation state
- **Switches**: Identify

## Troubleshooting

- **Diagnostics**: Downloads a diagnostics file to attach to a bug report.
- **System health**: Adds its status to Home Assistant's system information.

## At a glance

- Kind: Built-in integration
- Category: [Climate](https://vulpo.app/integrations/category/climate.md), Fans and ventilation
- Number: 134 installs sharing analytics
- Connection: Works locally
- Upkeep: Part of Home Assistant
- Needs: Built into Home Assistant
- Quality scale: Platinum quality scale
- Domain: `duco`
- Source: <https://www.home-assistant.io/integrations/duco/>

In Vulpo: Quick Toggle card, Fan card, Select card, Chart card, Apple Watch, Control Center

Independent directory, made by the developer of Vulpo. Not affiliated with Home Assistant or the Open Home Foundation. [About these numbers](https://vulpo.app/integrations/about)

Last updated 2026-10-22. Source: https://vulpo.app/integrations/core/duco

---

- HTML version of this page: https://vulpo.app/integrations/core/duco
- Site index for agents: https://vulpo.app/llms.txt
- Everything in one document: https://vulpo.app/llms-full.txt
- All pages: https://vulpo.app/sitemap.xml