Customer reviews from resideo.com
Honeywell Home - T9 Smart Programmable Touch-Screen Wi-Fi Thermostat
Average customer rating
4.1 out of 5
4.1
(2,830 Reviews)
Open Ratings Snapshot
Rating breakdown 2,830 reviews
5 Stars
1,644
4 Stars
555
3 Stars
253
2 Stars
140
1 Star
238
81%of customers recommend this product. 
(
1,772 out of 2,181
)
Best Buy Privacy Policy
Customer Reviews for Honeywell Home - T9 Smart Programmable Touch-Screen Wi-Fi Thermostat
Customer Rating
4 out of 5
4
Thermostat yes, app no
on June 22, 2025
Posted by: Poe1
from Nc
Verified Purchase:Yes
Thermostat works great 5 stars, the Resideo app not so much maybe half a star
Written by a customer while visiting resideo.com
Customer Rating
4 out of 5
4
Its a great thermostat for single heat systems
on June 22, 2025
Posted by: Ang K
from NC
Verified Purchase:Yes
Its a great thermostat for single heat systems. It works great, connects to internet fast, easy to install. The only downside that i learned was when i moved from one house to another and i learned that my new house has a dual heat system. It can be made working the system by rewiring, but i really have to upgrade and spend another 200 now to buy a T10 because T9 is not designed to handle it… so just fruit for thoughts you better go with the T10 to start with to avoid spending double the money
Written by a customer while visiting resideo.com
Customer Rating
5 out of 5
5
Most Convenient Solution
on June 22, 2025
Posted by: Elip
from Palo Alto, CA
Verified Purchase:Yes
The T9 was easy to install as a replacement for an old thermostat. It feels like a smart phone, plus is working well through the Resideo app. There is a certain elegance for this "smart phone on the wall" solution. Connecting to the old wires was very easy and there was no configuration needed for the thermostat, as it self-identified the wires and type of connection. The only mini challenge was to identify and run a neutral wire that didn't exist in the old thermostat, and while the kit comes with an adaptor, I preferred to use one of the extra wires in the cable as neutral. I have examined it while traveling and it works fine. I need more thermostats for some of the other rooms in my house and I will definitely get more T9's. I have noticed that a cover plate for the wall is very useful. besides the aesthetics, it allows mounting the plate on existing older thermostat wall plate, where no new wall drilling is required.
I would recommend this to a friend!
Written by a customer while visiting resideo.com
Customer Rating
5 out of 5
5
New revolutionary features for year round use…
on June 24, 2025
Posted by: C. Alley
from Maryland
Verified Purchase:Yes
I had a BGE AUTOMATED THERMOSTAT. For its time it adequate but we are retired and our requirements changed. The most revolutionary feature is: Set maximum temperature for Summer and Winter. This thermostat turns on when the heated room temperature is less than, for us, 68. And when the cooled room temperature exceeds 78, for us, the air conditioning turns on. You will not have to tell the thermostat when to heat or cool.
I would recommend this to a friend!
Written by a customer while visiting resideo.com
Customer Rating
5 out of 5
5
Worth purchase
on June 27, 2025
Posted by: Dams
from Mn
Verified Purchase:Yes
I have had ot for a couple months now and it has performed great. Gives me updates on humidity levels for warnings i set and temps. Also let's me know when to change furnace filter. It has a lot of nice options I have yet to try. As of now I would recommend it.
I would recommend this to a friend!
Written by a customer while visiting resideo.com
Customer Rating
2 out of 5
2
Offline
on June 29, 2025
Posted by: Lynsey
from Wisconsin
Verified Purchase:Yes
After a few weeks of use my app now will no longer stay connect and therefore can’t use the app when I’m away. I’ve tried resetting and nothing has worked.
Written by a customer while visiting resideo.com
Customer Rating
5 out of 5
5
Easy and Great Thermostat!
on June 29, 2025
Posted by: M Murphy
from Murrells Inlet, SC and Key West, Florida
Verified Purchase:Yes
I have been using your Smart thermostats for commercial applications for years. I finally put them in my second home to monitor things along with the leak detection for the AC pan.
They work great and the App is easy to use. I am ordering two more today for my primary home with the leak detector also!
I highly recommend them!!
I would recommend this to a friend!
Written by a customer while visiting resideo.com
Customer Rating
5 out of 5
5
Easy to read from across the room
on June 29, 2025
Posted by: Mtll
Verified Purchase:Yes
Nice thermostst. Accurate. I like the bluetooth feature where it can reaf ftom our upstairs temp.
Written by a customer while visiting resideo.com
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