I installed one Honeywell T9 and one Ecobee 3. The T9 is a nice, simple smart thermostat that has a remote sensor that works at a long distance and between different floor levels. The Ecobee 3 sensor does not. I returned the Ecobee
While I love the product, I found that one thermostat seems to reset itself randomly requiring it to be setup again. It also reverts to some preprogrammed schedule even after the schedule is deleted.
There is no available manual or instruction on how to set up the time/temperature zones with temperature changes after the install. I make the changes, and it later reverts back to the old 60 degrees temperatures. Very poor, they want you to buy the information.
No, I would not recommend this to a friend.
Response from resideo.comBy Support, January 27, 2023
Hi Pere, this is not what you should expect. On the Resideo app, please go to the schedule and make sure that each period has the priority rooms, temperature and time selected. You can find the manuals on the 'Resources' section of this page: https://www.honeywellhome.com/us/en/products/air/thermostats/wifi-thermostats/t9-smart-thermostat-with-sensor-rcht9610wfsw2003-u/ and Our team is ready to help. Visit the Support Center link at the top of the page for ways to get in touch, we will be happy to help gathering more details about the issue and troubleshooting.
Had nothing but issues with this thermostat (Honeywell T9). Honeywell was terrible to work with. Thermostat kept short cycling air conditioner and temperature would be spiritic. Honeywell wanted me to test unit with a volt meter before they would offer any replacement or remedy even though it was under warranty. In the end they would not replace or offer return. Spent multiple days and time trying to remedy without success. I eventually replaced with an Ecobee and have had no issues. Ecobee works perfectly. Don't waste your time, money, and frustration. I have a defective unit with multiple sensors which is useless. They would not replace or repair and I cant resell because its defective.
No, I would not recommend this to a friend.
Response from resideo.comBy Joey, Support, January 23, 2023
Hi, we're sorry to hear this model did not work out for you. We appreciate the feedback and will utilize your comments moving forward.
The T9 is a great package. Having the remote sensor provides the insight and ability to control the temperature is an area that was previously difficult.
Really like this product, bought 2 T9's along with 2 remote sensors for each floor of our 2 story house. Easy install, just pay close attention to previous wiring on old thermostat, take pictures. Only reason giving it a 4 rating is the software's Geofencing can be a bit finicky. Not sure if software or device specific. Great product overall.