Pichler PKOM4
homebridge-pichler-pkom4 · v1.1.11
Adds Pichler PKOM4 ventilation heat pumps to HomeKit via a Modbus connection.
What it says it supports
Brands
- Pichler
Devices it names
- PKOM4 Classic
- PKOM4 Trend
Shows up in Apple Home as from its README
Sensor readings in its code
What people report
Controls Pichler PKOM4 ventilation over Modbus; mode switching bug fixed in a beta.
- Works1
| Device | Status | What they said | Source |
|---|---|---|---|
| Pichler PKOM4 ventilation unit | Works | Mode switching fixed in beta 5; Modbus TCP gateway worksSaved copyHello, Thank you for your answer and your work ! I did the following tests : Changing mode on the PKOM4 PKOM4 moving to Auto mode => HK displays Automatic OK PKOM4 moving to Winter mode => HK displays Heating OK PKOM4 moving to Summer mode => HK displays Cooling OK PKOM4 moving to Party mode => HK displays Off OK PKOM4 moving to Off mode => HK displays Fan to 0 OK So modes are matching, this is great. I can confirm that settings are working, see my configuration in the picture. However, it seems there are issues when switch modes in HomeKit itself. Here are my tests : Changing mode on HomeKit … Excerpt saved from GitHub on 2026-10-22. | Issue #5 · 2026-08 |
Gathered from the plugin’s GitHub issues, pull requests, discussions, wiki and docs, and from r/homebridge. These are individual reports, so check the linked thread and the date before you buy.
How it connects
Local
Modbus via USB converter on Raspberry Pi
You’ll need
- Raspberry Pi
- Modbus/USB converter
Compatibility
| Verified by Homebridge | Yes |
|---|---|
| Homebridge versions | ^1.8.0 || ^2.4.0 |
| Homebridge 2.0 | Yes |
| Node.js | ^18.19.0 || ^20.9.0 || ^22.23.2 || ^24.20.0 |
| Settings in Homebridge UI | Yes |
| Matter | No |
| Platform name | homebridge-pichler-pkom4 |
| License | EUPL |
Community signals
| Downloads a week | 100 |
|---|---|
| Downloads a month | 4,210 |
| GitHub stars | 5 |
| Open issues | 0 |
| Closed issues | 5 |
| Last code push | 2026-10-19 |
| Latest version | 1.1.11 (2026-09-20) |
| First published | 2022-09-12 |
| Releases | 216 |
In ReReHome
Whatever this plugin publishes reaches Apple Home as a normal HomeKit accessory behind your Homebridge bridge, so ReReHome shows and controls it like any other.
Bridges get their own settings page listing the accessories behind them.
Caveats from the README
- Needs physical Modbus wiring
HomeKit services in its code
Found by scanning the published npm package. A plugin can register a service only for some devices.
- AirPurifier
- AirQualitySensor
- Fan
- FilterMaintenance
- HeaterCooler
- HumidifierDehumidifier
- Slats
