---
title: "CoolMasterNet"
description: "CoolMasterNet is a built-in integration for Home Assistant. It has 188 installs sharing analytics and works locally."
canonical: "https://vulpo.app/integrations/core/coolmaster"
url: "https://vulpo.app/integrations/core/coolmaster.md"
last-updated: "2026-10-23"
version: "1.4"
---

# CoolMasterNet

> CoolMasterNet is a built-in integration for Home Assistant. It has 188 installs sharing analytics and works locally.

CoolMasterNet is a built-in integration that connects Home Assistant to CoolMasterNet climate control devices over the local network. It adds climate entities for the connected units, along with a binary sensor for a clean filter alert, a button to reset the filter, and a sensor for the error code. Setup is done in the UI, where the supported modes are chosen: cool, dry, fan only, heat, and automatic heat/cool. Options also cover whether units can be turned off from Home Assistant and whether a swing mode control is exposed, which makes polling slower. A wakeup prompt can be sent before each command, which serial models require, and the connection settings can be changed later without removing the entry.

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=coolmaster)

## 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.
- **Change settings later**: Its connection settings can change without removing it.
- **Updated with Home Assistant**: Ships and updates with every Home Assistant release.

## Setting it up

It is added under Settings, Devices and services, with Add integration.

### Connect

- **Support cool mode**: Enable if your units can cool.
- **Support dry mode**: Enable if your units have a dry (dehumidify) mode.
- **Support fan only mode**: Enable if your units can run the fan without heating or cooling.
- **Support heat mode**: Enable if your units can heat.
- **Support automatic heat/cool mode**: Enable if your units can switch between heating and cooling automatically.
- **Host**: The hostname or IP address of your CoolMasterNet device.
- **Can be turned off**: Allow the units to be turned off from Home Assistant.
- **Control swing mode**: Expose a swing mode control. This adds one request per unit on every update, so polling is slower.
- **Send wakeup prompt**: Send the coolmaster unit an empty command before issuing any actual command. This is required for serial models.

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**: Clean filter
- **Buttons**: Reset filter
- **Sensors**: Error code

## At a glance

- Kind: Built-in integration
- Category: [Climate](https://vulpo.app/integrations/category/climate.md), Heat pumps and air conditioning
- Number: 188 installs sharing analytics
- Connection: Works locally
- Upkeep: Part of Home Assistant
- Needs: Built into Home Assistant
- Domain: `coolmaster`
- Source: <https://www.home-assistant.io/integrations/coolmaster/>

In Vulpo: Climate card, Button card, Chart card, Apple Watch, Climate Live Activity (Pro)

[Widgets & Live Activities in Vulpo](https://vulpo.app/features/widgets-and-live-activities)

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 2026-10-23. Source: https://vulpo.app/integrations/core/coolmaster

---

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