Currently the VOCOlinc VAP1 Air Purifier sensors populate using HomeKit Controller, however the fan speed cannot be controlled. This is possible in HomeKit & would be a welcome addition to HomeKit Controller.
I’m also waiting for this, in fact there’s another thread here also asking for it: Vocolinc Air Purifier Integration (or at least a generic Air Purifier integration)
I’m also a big fan (pun not intended) of having this issue solved. Is there a git repo where we could also raise/upvote a ticket?