Aerosmart Gateway for Drexel & Weiss heat pumps

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Hi everyone,

there is a new project that may be useful for Home Assistant users with a Drexel & Weiss Aerosmart system:

https://github.com/nean-and-i/aerosmart-gateway

What it is

Aerosmart Gateway is a lightweight gateway for Drexel & Weiss Aerosmart heat pumps and ventilation/heating systems, including the Aerosmart M line.

It is intended to make these systems to integrate with Home Assistant by exposing data via USB serial and control interfaces that can be used for monitoring, automation, and custom integrations.

What it can do

Typical use cases include:

  • Reading operating data from the Drexel und Weiss Aerosmart heat pump system for use in Home Assistant dashboards and automations.
  • Providing a bridge between the Aerosmart system and Home Assistant-friendly workflows.
  • Enabling local integration scenarios that are suited for automations.

Main advantages

A few things that stand out about this project:

  • Single Go binary: the gateway is distributed as a standalone executable, so there is no need to install Python, Docker, or other heavy runtime dependencies first.
  • Runs on many platforms: because it is a Go application, it is easy to provide builds for different systems, including Linux, Windows, macOS, and ARM devices.
  • Good fit for Raspberry Pi: this is especially attractive for Home Assistant users who run add-ons, side services, or small helper tools on a Raspberry Pi, including older Raspberry Pi models.
  • Simple deployment: copy the binary, add the configuration, and run it.
  • Low overhead: a small standalone gateway is often easier to maintain than a larger stack with multiple dependencies.

Vendor and supported models

The gateway targets Drexel & Weiss Aerosmart devices, with support centered on the Aerosmart series and specifically the Aerosmart M systems.

Once more exact model coverage is available in the repository over time, the confirmed supported variants will be listed directly in the README so Home Assistant users can quickly verify compatibility before testing.

Why it may interest Home Assistant users

This project looks particularly useful if you want to:

  • Integrate a Drexel & Weiss system locally into Home Assistant.
  • low cost serial communication reads and writes to Aerosmart M device via serial over USB located on Mainboard. NOTE: It is NOT Modbus RTU, no modbus settings required.
  • Build dashboards for temperatures, modes, states, and other system values.
  • Create automations based on heat pump state, schedules, presence, energy price signals, or other HA entities.
  • Avoid heavier integration stacks when a small standalone service is enough.

Feedback welcome

If anyone here is already using a Drexel & Weiss Aerosmart unit, it would be interesting to hear:

  • how you integrate it,
  • and whether this gateway works well in your Home Assistant setup.

Thanks,
nean