I see others starting to have this issue now too. Could you guys post what your home network looks like in terms of h/w and setup? My setup: Google Wifi for routers Guest network does not have this problem with drain from homekit Using a jailbreak the drain is from the homed daemon (I wish this stuff was viewable without a jailbreak) Drain occurs on iOS 14.2, 14.1, and 13.5 I deleted the home completely (I was the owner) and made a new iCloud account. I setup all my home devices under the new iCloud account and the phone (running 14.2) has 0 drain. However my iCloud account still has the drain, even though I'm just a guest of the other icloud account now. Meaning the problem is in my main icloud account somehow. Device setup: 0 automations set to use my location Wemo lights Hue lights with Hue bridge Lifx lights Eufy cameras - note these are not added in Homekit, but they show up if I go to add-devices within the Home app. Homebridge (tested drain with this disconnected, since it's not officially supported but still have drain) Through Homebridge I have Tuya garage door, aura strip light, and Plex API calls to set scenes when I hit play/pause on TV In fact, with all of my homekit devices powered off, including Homebridge, the drain is still there. Same goes for removing all devices from Homekit. Schlage door lock AppleTV 4K as my home bridge, wired LAN to it, and it's running the latest tvOS 14.2 Only ways I've solved the drain: Connect to guest wifi instead of main wifi Connect to cellular (again removing me from main wifi) Connect to anyone else's wifi Sign out of iCloud - turning off Home in iCloud does not stop the homed daemon from running constantly (once every 5-10 seconds for anywhere from 2% to 60% cpu Disable my affected iCloud account from having Edit access to the home (on the new iCloud account there is no drain and it has full edit access since it's the owner, again making me believe my main icloud account has something corrupt or stuck in it.) Using a jailbreak, and DaemonDisabler from c.y.d.i.a. - disable and unload homed from the system processes (breaking homekit use in the process) Question to anyone reading this: Do you see any un-added devices waiting to be added when you select Add in the Home app? I have a suspicion the drain may have something to do with un-added devices constantly talking on mDNS but it's just a thought. Weird, however, that even when I'm not the owner it's still draining just my affected icloud account. The problem doesn't move to a different icloud account when I've moved ownership of the home and all devices to that.

I know this is a very old post but I'm experiencing this exact same issue on iOS 13.5 with only one device. Did you ever find the cause? On any other wifi or cellular, no drain. But on my home wifi it's taking on average 60% of my battery. I'm very willing to try any idea you have because my nuclear option is deleting my home and starting over. I even wiped my phone and restored but no luck. Readding 60+ devices isn't how I'd like to spend my weekend, but if that's how I get my battery life back it's what I'll do.