pywfrac

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Async Python client library for Mitsubishi Heavy Industries air conditioners that use the WF-RAC WiFi module and the Smart M-Air app. Talks the module's local HTTP(S) API and decodes/encodes the airconStat protocol carried over it.

Not for Mitsubishi Electric systems (e.g. a MAC-577IF2-E interface) or MELCloud — different manufacturer, different protocol.

This library is the protocol layer extracted from the mitsubishi_wf_rac Home Assistant integration, which stays the reference for field notes and supported devices. pywfrac has no dependency on Home Assistant — it only needs an aiohttp.ClientSession.

Install

pip install pywfrac

Usage

import aiohttp
from pywfrac import Repository

async def main() -> None:
    async with aiohttp.ClientSession() as session:
        repo = Repository(
            session,
            hostname="192.168.1.50",
            port=51443,
            operator_id="my-operator-id",
            device_id="my-device-id",
        )
        airco_id = await repo.get_airco_id()
        await repo.update_account_info(airco_id, time_zone="Europe/Berlin")
        stats = await repo.get_aircon_stats(airco_id)

Repository discovers whether the module speaks plain HTTP or HTTPS on the first request and remembers the result; construct it with method="http" or method="https" to skip discovery if you already know. Pass cert_path to use a captured module certificate instead of the permissive fallback context — see Repository._get_ssl_context for how to capture one.

RacParser turns a raw getAirconStat response into an Aircon/AirconStat object and back; see the protocol reference linked below for the field layout.

Protocol reference

The airconStat wire format, error codes, and per-model capability tables are documented in the integration's module reference.

Versioning

This library follows SemVer, independent of the integration's own CalVer release scheme — pin an exact version.

License

MIT, see LICENSE. Extracted from code originally by @jeatheak, maintained since by @blues-sechseck.

Project links

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Credits

Author: Daniel

GitHub Statistics

Data verified by PyPI on Sep 3, 2026
The GitHub source repository was provided by the project maintainers and verified by PyPI at the time of upload. Stars, forks, and open issues/PRs are derived from that repository and have not been independently verified.

License expression

MIT
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Requires

Python >=3.11

Provides Extra

dev

Tags

air-conditioner hvac mitsubishi wf-rac

Classifiers

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