Room sensor for Honeywell T Stat?

[Tom D]

I would like to add the ability for my heating system to respond to a remote sensor tag based on the temperature in my bedroom. My understanding is that I can connect a wireless temperature sensor tag to IFTTT and use it to serve as the trigger to turn the heat on/off in my bedroom. I have a Honeywell wifi thermostat currently, and the alternative is to spend 2x the money as the ethernet hub + tag on an EcoBee tstat + remote sensors, so this is an attractive option (especially as a renter). Based on other posts on the support forum, some people have issues with Honeywell and IFTTT not updating each other frequently enough, but those are from a couple years ago. I'm hoping someone else can chime in on the reliability of the wireless sensors + IFTTT + Honeywell thermostats? 

[john simano]

I have no experience with controlling my Honeywell thermostat with a wireless sensor tag. But I do have a Honeywell thermostat that I connected to my tag manager, and that connection seems entirely reliable.

[Tom D]

What do you do with the tag manager and the thermostat?

[john simano]

Well, I connected them in anticipation of doing more things in the future. But for now, I just have the Honeywell linked with my tag manager so I can get an extra temperature reading from the Wireless Tag app on my phone (i dont have to launch a separate app to see my thermostat temp). And also I can record and graph historical temperatures of my thermostat along with all my other sensors.

[Tom D]

Update: I purchased the ethernet hub and one high precision temperature sensor to add a temperature sensor inside my bedroom, where it often gets cold at night before the thermostat in the hallway turns on, and then when it turns on it gets too hot before it triggers the hallway thermostat. I first tried using IFTTT but it wasn't reliable. I set up my Honeywell wi-fi thermostat as a Kumo thermostat and within the WirelessTag app set it to control the thermostat. You could also use the Kumo App but I am using the in-app one for now.

Couple things I've learned:

- The temperature apparently is only dictating heat on the left and AC on the right temperature selector, not a threshold where it kicks on and off for heat. I will report back how that works (how well it keeps my room at the desired temp, 60f for now). 

- You have to set the thermostat's heating schedule to something higher than it will be when Kumo tells it to turn on if you want heat. When Kumo turns on the thermostat, it sets it to run heat program rather than specifying a hold at a temp. If the temp of the thermostat is above the room temp, heat won't come on (which in my setup could happen, the downstairs heat goes straight upstairs into the hallway thermostat). 

- The ethernet hub interferes with my OTA tv antenna when communicating. I made a separate thread about that in hopes of identifying a frequency (between 431MHz to 439MHz) that messes with it less, pending the solution (if any, other than run the hub a distance away with a long ethernet cord).

[T Jakab]

Did you consider a multi zone system like Evohome (there are others too)?

http://evohome.honeywellhome.com/

Looks like a big investment but it pays back in one season. Also you don't need to convert all rooms to a zone in one go, start with 2-3 then add more on the go.

There's nothing matching the comfort and flexibility of a multi zone heating system.

[Tom D]

So I live in a rental home and already used my utility rebate on the current Honeywell thermostats that I have. That locks me in to forcing a solution with my existing hardware, unfortunately. 

[mike...@gmail.com]

Do you know if the tag manager will connect to the Honeywell T9 or T10 thermostat?