Customer Reviews for Honeywell Home T9 WiFi 7-Day Programmable Smart Thermostat with Touchscreen Display and Smart Room Sensor

Works great, easy to install. Took a little getting used to after using the nest for so many years, but I like it better. It's more reliable. I'm not sure the nest ever really "learned" anything other than how to annoy me.

The representative could not process the refund/credit for the Thermostat Credit Protection Plan that was being returned during this transaction.

I have a problem with the internet connection loose at my lake house and it is 190 miles away. It is very difficult for me to reset my thermostat from home. I bought the unit so I could use it from home.

We purchased the T9 after months of research due to our kids rooms being to 🥶 or 🥵 when our main bedroom was just right. Once we got that and added the additional sensors boy were we in zones for real, we were able to measure and balance the temperature off of their rooms combined and kept everything nice comfortable with our killing our electric and gas. We have even recommended it to family members who have the similar experience.

Have these in all my houses. Excellent product.

Purchased T9 in 2022 because of its sensor. 2nd floor was never cool in summer, with Central AC, prior to T9. This summer, using the T9 menu options, I had the option of using its sensor (2nd floor) or main thermostat (1st floor) to determine temp of home. By selecting its sensor, the 2nd floor was so cool. Thank you Honeywell!

You say that user can buy up to 20 remote sensors for the T9 stat.... But... user can NOT SEE the remoted sensor activity/temp on the phone APP. That must really prevent a lot of sensor sales for you guys... ECOBEE shows every sensor on the system clearly, while remote user is using the APP

I was a disappointed when I could not set the temperature below 50 degrees.

Wonderful, absolutely the best thermostat I’ve ever used!

We had uneven heating with our upstairs system and this with the wireless remote thermostat was able to help us. The open air area of our upstairs always stayed warm at night while the bedrooms would be 8-10 degrees cooler. Now I was able to prioritize the remote thermostat to ensure the bedrooms are appropriately heated and cooled at night.

I've had my t9 installed for a couple weeks, everything was good till this past weekend, now everyday the clock resets. None of the other setting reset, just the clock.

Poor app, poor website, worse support. After 3 years still no support and t-stat does not function as described . T-stats have a lot of connection issues and no integration with Alexa. Bought 4 and trashed 2 as no warranty either.

Inadequate install instructions. Returned.

The thermostat shorted out my AC - caused a 300 repair - I will be returning this item

The Honeywell App works but it does not work with Alexa or Ring. I have talked to support and they are no help.

Entire new HVAC system and Honeywell thermostat installed less than 18 months ago. Thermostat now is shutting everything down because of "memory error" alarm. Warranty is useless because you need to go through the installer/contractor and will need to pay for installers service fee.

I have had this for a few years and have had no problems except recently the temperature reading fluctuates by 8 degrees. It causes the house to get super cold or warm. I have bought a few digital thermometers to check the T9 and it is way off and changes in minutes. Please help!

Works as advertised!

Easy install, comes with everything you need even if you don’t have a C wire. Has worked really well keeping my house cool during the 90 degree days. Room sensor works very well keeping your active rooms the selected temp.

Inaccurate temperature reading (2-4 degrees higher than actual), even after adjusting the offset. This is unacceptable for a device whose main purpose it to monitor and control the temperature. I verified the lack of accuracy with an NSF Certified thermometer. I do like the design, but the inaccurate reading is a deal breaker. Also the T9 lacks advanced customization options (cycles per hour, swing temperature) that are available on competitors like ecobee. It was easy to return to the store.

Performs as advertised. Installation is very easy if you already have a Honeywell T series thermostat controller. Then just use the app to manage the home's temps from anywhere, at any time.

Easy to install and using

I bought this a month ago to upgrade the Carrier smart thermostat that came with my house. Installation was easy but I am unable to create an accurate schedule in my time zone, it uses time pulled from the internet but not the current time zone. The time zone cannot be set in the thermostat so I had to convert my schedule to GMT time. The Time Zone is set by the app, however, I am unable to connect the app because I cannot create a login ID and password. No where in the app does it have a link to register a new user, there is a Forgot Password link but not a Register New User link. Create a user account on the website but it uses a user ID, the App uses my email address for a user ID so that did not work. I am unable to register the T9, the models listed for registering product stops at T6. I give up, this is a trash product, Resideo, Honeywell Home products are on my never again do not buy list and of course I will be sharing my experiences whenever the conversation with friends and colleagues turns towards home automation, AC, thermostats, bad customer service, etc.

Works great and easy-to-use at the thermostat or with the app.

Why didn’t we do this sooner?? Love the simplicity of the Smart Thermometer, as well as the ease of installation. It’s been wonderful to control temps remotely. Definitely recommend.