How to Install Remote_HomeAssistant into two instances of Home Assistant OS 2026.2.3

[hollow shard]

As stated, I'm running two instances of Home Assistant OS 2026.2.3, one in the main house and one out in the pump house. I'd like to bring the entities from the pump house into the main house and it appears custom_components/remote_homeassistant would do the trick.

The problem I'm running into is that remote_homeassistant doesn't show up under HACS and I'm not sure what to tweak to find it.

The install instructions state as an alternative to HACS that you can simply "copy the remote_homeassistant folder into your custom_components folder." I don't really understand the file system and how to access it on my two N150 HA OS instances . . . and further don't know how to copy down a directory from github into my HA OS instances.

I'd really appreciate any helpful suggestions.

-rock-

[azure nymph]

Why do you have two instances? Maybe you have filters in HACS? Can you share a screenshot? Looks like this for me. As for the file system using the SAMBA app is liklely easiest.

[hollow shard]

Thank you, @azure nymph . SAMBA is a big help.

I put the Pump House on its own HA instance because I have Zigbee sensors out there and the Zigbee network just wasn't stable over the 150' gap between house and pump house. Tried a couple repeater options with no success. The 2nd HA instance allows me to run the Zigbee network in the pump house while relying on WiFi to bridge the gap. So far, so good. Now just need to get remote-homeassistant up and running to integrate those pump house Zigbee devices into the main HA.

[azure nymph]

A separate zigbee coordinator might have been easier and cheaper. A SLZB-06 with Wifi/LAN/PoE for example.

[hollow shard]

@azure nymph Thank you again for your help! I do have remote_homeassistant installed and working. I can now see the PumpHouse entities in my main "Home" Home Assistant. I still need to work on naming as it's getting quite convoluted (e.g. PumpHouse_Pump House Heater Switch) for some entities I want to expose and reference through Alexa. Maybe see some Helpers in my future.

Regarding the separate Zigbee coordinator idea, I did initially try a SONOFF Dongle-Max thinking it could act as a local Zigbee coordinator in the Pump House connected to the "Home" Home Assistant instance over WiFi, but couldn't figure out how to set it up in Home Assistant as a 2nd Zigbee controller. With my current two server HA architecture working, I'll back burner that idea until I have a new job for the existing Pump House HA server.