I was poking at my HVAC system today to see if I could install a smart thermostat. What I think I figured out is that I have a Honeywell Redlink system, so I am hosed unless I want to replace it all.
Is there a Redlink integration for Hubitat? I have seen some references to such but they seemed to refer to specific thermostats that aren't mine. There is this driver too but I am not sure it applies to my system.
Once you get the Redlink Gateway you can integrate with Hubitat via the Honeywell Total Comfort Connect. Redlink Gateways are often available on Ebay for under $75. There are two RedLink Gateways; you want to be sure to get the correct one for your T-stat (s). You can connect multiple t-stats to one Redlink Gateway.
The downside is that connecting to Hubitat via the Redlink Gateway requires an internet connection as the communication path is:
Your Tstat -> Redlink Gateway -> Internet -> Honeywell Total Comfort Connect -> Internet -> Hubitat
The upside is that the connection is absolutely rock solid. I set mine up about 2 years ago, and have three local t-stats. They connected to the Redlink Gateway quickly and once set up have never once needed to be reconnected. The connection has survived power outages, internet outage, etc. and it simply reconnects once service is restored with no need for any intervention on my part. It may be my most reliable connected device.
ETA: I did the above to connect my DUCTED minisplits to Hubitat. They are controlled via a pre 2019 module wired to the unit that wirelessly communicates over Redlink to MRCH1 t-stats. The above mentioned Redlink gateway picks up the signal from that module. The Honeywell Total Comfort Connect site recognizes only the Off/Cool/Heat status and the temperature. It does not pick up the fan status. Post 2019, Mitsubishi retired the MRCH1 and upgraded the t-stat for the DUCTED minisplits, so it may work different.
Interesting. I've a pending Mitsubishi heat pump installation and have been researching controls. There is a RedLink wall mount (battery powered) unit from Mitsubishi that is basically what looks like a T9, but that doen't show up on the chart. The Redlink Gateway would be a lot less expensive than adding the wifi unit to all the heads.
It's an interesting option, but for the wiring. It's interesting that the Mitsubishi wireless unit (basically a rebadged Honeywell RedLink) also seems to be zibgee. Couldn't think just simply integrate with hubitate directly? Or dos the Redlink operate over zigbee but use some sort of proprietary protocol on top if it?
Couldn't tell you that. If you can pair it, it should have a finger print. If it has a fingerprint then someone might be able to write a driver for it. (it will likely just pair as DEVICE but that's all you'd need) Also look here and see @aaiyar 's link
I have never seen nor heard of Redlink being Zigbee. It is completely proprietary as far as I am aware. If it was Zigbee, surely someone in the past decade or more would have written a direct integration for any number of home automation systems. Again, from what I have seen, there is only the cloud based integration for Redlink.
Honeywell sometimes uses Z-wave or Wifi, and I suspect something like Mitsubishi would use Wifi to cloud based stuff as an alternative to Redlink.
Maybe it uses zigbee as a transport, with a proprietary encoding/profile? Like ecobee does with their remote sensors. Or Control4 does with their system.
I guess my poorly worded point was that I haven't seen any information of what Redlink really is.
It could be Zigbee, but it isn't Zigbee as most people in our world would think of it. It can't be paired with any home automation form of Zigbee.
This is most likely true with Redlink, if it does use Zigbee. Our building at work has Zigbee light switches and thermostats, but they aren't anything you could buy retail, or hook up to a smart home system. They likely use Zigbee Building Automation protocol.
Same thing with smart utility meters, you can see them show up on a Zigbee scan in Hubitat, but you cannot pair them nor can you use their data in automations.
