12/6/2022 - Resideo was kind enough to honor my warranty request with the help of an independent HVAC contractor, as the T10 is a "Professional" model.
So, the same thing started happening a few days into my replacement (new) T10 thermostat. Fortunately, I had done enough research, troubleshooting, and had a couple of cheap furnace parts on hand, and, fingers crossed, it may have been a flaky pressure switch on my inducer motor that was causing the issues. It was just a coincidence that changing out the original T10 for a basic non programmable t-stat "seemed" to cure the issue. Time will tell, but if this thing continues to work, it's fantastic, and hands down, better than Ecobee's latest 2022 Premium, IMO.
5+ STARS
---end of update
I really wanted to like this thermostat, as I have always had Honeywell t-stats in the past. I was warned that the T10 had to be installed by a "professional" in order to have ANY warranty whatsoever, whereas the T9 is approved for installation by the homeowner. Honestly, other than additional features, the installation process is virtually identical, so I don't understand this distinction. I ordered the unit in Sept of '22, and installed immediately. I wanted the T10, as I had also purchased a Honeywell HM750 whole house steam humidifier, and it is one of the few t-stats that can control a steam humidifier. Well, as summer transitioned into fall, the t-stat appeared to work great! However, once the temps dropped consistently enough to require full time heat setting, it began to fail. I honestly thought it was my furnace that was failing, as half the time, the ignitor and gas valve failed to activate, even though the inducer seemed to run fine. I was chasing down pressure switches, ignitors, and even the IFC main furnace board! No improvement. However, bypassing the T-stat at the IFC directly, the furnace ran fine! This was not a solution, as I couldn't sit in front of my furnace 24x7 to control it manually every day. Ultimately, I went to a local box store and bought the cheapest basic thermostat I could find, and plugged that in, and the system has been running great! Unfortunately, I can't control my fancy steam humidifier, and had to resort to using the included humidiPro. Through an independent HVAC specialist, who came out and assisted me in this project, I was able to ultimately get a replacement ticket initiated through Resideo, however, I am awaiting acknowledgement of the required attachments I sent them, verifying my purchase and the device info.
Currently, I am using an Ecobee Premium. By comparison, I find it's app highly convoluted, and it takes considerable focus to find what I need. Also, there is no "circulate" function on the Ecobee, whereas there is on the T10. The Resideo app is by no means great, as it must be force closed to get the latest data from the T10 every time you make a change, but it's simple and concise to use. They just need to update it so it will refresh in the background, and not require a force close each time you pull it back up.
Also, I prefer the functionality of the Honeywell remote sensors over the Ecobee sensors because the Honeywell pull both Temp AND Humidity, along with motion activity, whereas the Ecobee sensors do NOT pull humidity! I want both temperature AND humidity levels balanced! There is no reason for Ecobee to not include this in their remote sensors....
I will update this review once I get some action on my RMA process.
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The next best thing - problem solved
Problem existed upstairs in our home that a bedroom got either too cold or to warm depending on the season. Reason: thermostat is installed in the hallway and the the hallway doesn’t have a dedicated air stream. Once the bedroom doors are closed, the thermostat is “isolated” and is doesn’t measure the bedroom temperature. Consequently, during summertime the airco remains running until the bedroom feels like a freezer. We often use 1 of the 2 upstairs bedrooms and I was considering moving that thermostat into that bedroom. Then I googled for remote sensors which brought me to Honeywell. I prefer Honeywell because I installed a bunch of their more simple WiFi types (RTF6….)in all our rental houses. For our home I picked T10 because a little more functionality than T9 at only a small price difference (Likely will never use these functions). We have a conventional gas/electrical 1-stage heating/cooling system. Installation is easy (5 wires). The remote sensor installed in the bedroom comes with batteries and double sided tape.The key function I was looking for is that now I can select the bedroom temperature to be controlled. Or, if I would like, I could activate the hallway as well and it would control off the average temperature from bedroom and hallway combined. Anyway, that’s not what I prefer.The other thing I was looking for In a thermostat is auto changeover, thus automatically select either heating or cooling depending on the temperature, which can be relevant during spring an autumn. T9/10 have that functionality if selected. Works.Last but not least I connected it to WiFi to add it to my Honeywell app TCC which I utilize for remote access for all our rental houses. Surprisingly, T10 (or T9 for that matter) is not compatible with Honeywell TCC! Which was disappointing. Instead I had to download the Honeywell Home app. On the positive side it was very easy to import all other locations/thermostats from TCC into the new app! I ended up still using TCC for the rental places because it provides me with a better overview page ie I see at one glance if something is out of wack.
Top reviews from other countries
Jankan4
Perfect thermostat with additional sensor
Reviewed in Canada on October 28, 2023
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Reviewed in Canada on October 28, 2023
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Steph
Excellent product and more compatible than Ecobee or Nest
Reviewed in Canada on April 26, 2021Stan
No instructions or paper work shipped. Box was damaged, Product worked great No other issues
Reviewed in Canada on October 6, 2022
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Reviewed in Canada on October 6, 2022
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