Helty

Helty Flow

helty

Built inLocal polling

The Helty Flow integration lets you control Helty Flow decentralized heat-recovery ventilation units (also known as MVHR units) that have the smart Wi-Fi interface. The integration communicates with the unit directly on your local network, so it keeps working without an internet connection.

Documentation Source code

In Apple Home through HomeKit Bridge

What HomeKit Bridge makes of each kind of entity this integration creates, read from its source code. A device only gets the ones that apply to it.

Entity	Shows up as	Note
`fan`	Fan
`sensor`	Sensor (humidity, temperature)
`button`	Button (as a switch)

What people report

Helty Flow ventilation units are controlled locally over TCP, identified by host address only.

Works5

Device	In Home Assistant	What they said	Source
Helty Flow120	Works Local	Local TCP; identified by IP, use static address Saved copy Supported devices: FlowPLUS; FlowULTRA; Flow40; Flow120; FlowMANHATTAN. Limitations: The communication protocol has been reverse-engineered, as there is no official specification from the manufacturer. The unit does not expose a serial number or MAC address over its interface, so each configured unit is identified by its host address. If the unit's IP address changes, remove it and add it again with … Excerpt saved from home-assistant.io on 2026-10-23.	Docs
Helty Flow40	Works Local	Local TCP; identified by IP, use static address Saved copy Supported devices: FlowPLUS; FlowULTRA; Flow40; Flow120; FlowMANHATTAN. Limitations: The communication protocol has been reverse-engineered, as there is no official specification from the manufacturer. The unit does not expose a serial number or MAC address over its interface, so each configured unit is identified by its host address. If the unit's IP address changes, remove it and add it again with … Excerpt saved from home-assistant.io on 2026-10-23.	Docs
Helty FlowMANHATTAN	Works Local	Local TCP; identified by IP, use static address Saved copy Supported devices: FlowPLUS; FlowULTRA; Flow40; Flow120; FlowMANHATTAN. Limitations: The communication protocol has been reverse-engineered, as there is no official specification from the manufacturer. The unit does not expose a serial number or MAC address over its interface, so each configured unit is identified by its host address. If the unit's IP address changes, remove it and add it again with … Excerpt saved from home-assistant.io on 2026-10-23.	Docs
Helty FlowPLUS	Works Local	Local TCP; identified by IP, use static address Saved copy Supported devices: FlowPLUS; FlowULTRA; Flow40; Flow120; FlowMANHATTAN. Limitations: The communication protocol has been reverse-engineered, as there is no official specification from the manufacturer. The unit does not expose a serial number or MAC address over its interface, so each configured unit is identified by its host address. If the unit's IP address changes, remove it and add it again with … Excerpt saved from home-assistant.io on 2026-10-23.	Docs
Helty FlowULTRA	Works Local	Local TCP; identified by IP, use static address Saved copy Supported devices: FlowPLUS; FlowULTRA; Flow40; Flow120; FlowMANHATTAN. Limitations: The communication protocol has been reverse-engineered, as there is no official specification from the manufacturer. The unit does not expose a serial number or MAC address over its interface, so each configured unit is identified by its host address. If the unit's IP address changes, remove it and add it again with … Excerpt saved from home-assistant.io on 2026-10-23.	Docs

Gathered from GitHub issues, pull requests, discussions and docs, and from r/homeassistant. These are individual reports, so check the linked thread and the date before you buy.

How it connects

Local polling

Talks to the device on your network, asking it for updates every so often.

Details

Installs (analytics)	10
Quality scale	Silver
Added in	Home Assistant 2026.7
Set up in the UI	Yes
Maintainers	@ebaschiera

Devices listed in its documentation

FlowPLUS
FlowULTRA
Flow40
Flow120
FlowMANHATTAN

Limitations from the docs

The communication protocol has been reverse-engineered, as there is no official specification from the manufacturer. The unit does not expose a serial number or MAC address over its interface, so each configured unit is identified by its host address. If the unit's IP address changes, remove it and add it again with …

In ReReHome

Whatever HomeKit Bridge shares reaches Apple Home as normal HomeKit accessories behind your Home Assistant bridge, so ReReHome shows and controls them like any other.

Bridges get their own settings page listing the accessories behind them.