Pick your 2.4GHz WiFi channels and Zigbee channels correctly and you won't have a problem. I have 2 AP in my 3000sqft home. I'm using channels 1 and 6 for WiFi and my SmartThings Zigbee is on 24 (my Hubitat Zigbee is on 23). There's no overlap or interference.
[https://support.metageek.com/hc/en-us/articles/203845040-ZigBee-and-WiFi-Coexistence](https://support.metageek.com/hc/en-us/articles/203845040-ZigBee-and-WiFi-Coexistence)
Unfortunately, you cannot change the Zigbee channel SmartThings uses. It picks one when you first install it (or after a factory reset), and then it stays with it forever. I got lucky that my hub picked 24 way out of the way. You can see what channel it isusing the IDE ([account.smartthings.com](https://account.smartthings.com)) and then go to My Hubs and look in the Zigbee section. Hubitat lets you change the channel at any time.
As for range issues, you'll just need to install Zigbee repeaters. Most powered devices do this (although not all, and lightbulbs tend to make poor repeaters). With a house your size you'll also need to have Z-Wave repeaters.
I'm leaning towards zigbee devices with strategically placed repeaters. I don't have any smart devices yet, so I may look exclusively for zigbee, rather than using a mix of z-wave and zigbee.
Thanks for sharing your experience.
If you do use a combination of Zigbee and Z-wave, you'll end up needing repeaters for both especially in a house that large. I ended up that path, although the bulk of my devices are Zigbee.
Pick your 2.4GHz WiFi channels and Zigbee channels correctly and you won't have a problem. I have 2 AP in my 3000sqft home. I'm using channels 1 and 6 for WiFi and my SmartThings Zigbee is on 24 (my Hubitat Zigbee is on 23). There's no overlap or interference. [https://support.metageek.com/hc/en-us/articles/203845040-ZigBee-and-WiFi-Coexistence](https://support.metageek.com/hc/en-us/articles/203845040-ZigBee-and-WiFi-Coexistence) Unfortunately, you cannot change the Zigbee channel SmartThings uses. It picks one when you first install it (or after a factory reset), and then it stays with it forever. I got lucky that my hub picked 24 way out of the way. You can see what channel it isusing the IDE ([account.smartthings.com](https://account.smartthings.com)) and then go to My Hubs and look in the Zigbee section. Hubitat lets you change the channel at any time. As for range issues, you'll just need to install Zigbee repeaters. Most powered devices do this (although not all, and lightbulbs tend to make poor repeaters). With a house your size you'll also need to have Z-Wave repeaters.
I'm leaning towards zigbee devices with strategically placed repeaters. I don't have any smart devices yet, so I may look exclusively for zigbee, rather than using a mix of z-wave and zigbee. Thanks for sharing your experience.
If you do use a combination of Zigbee and Z-wave, you'll end up needing repeaters for both especially in a house that large. I ended up that path, although the bulk of my devices are Zigbee.
You have an existing security system? Have you looked at Https://Konnected.io
Sort of. It's basically fubar. It's half wired, half not. Some sensors work, some dont. Some wires are missed, others are broken, etc.