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
(2,934 Reviews)
Open Ratings Snapshot
Rating breakdown 2,934 reviews
5 Stars
1,698
4 Stars
569
3 Stars
271
2 Stars
153
1 Star
243
81%of customers recommend this product. 
(
1,831 out of 2,267
)
Best Buy Privacy Policy
Customer Reviews for Honeywell Home - T9 Smart Programmable Touch-Screen Wi-Fi Thermostat
Customer Rating
5 out of 5
5
Delayed install, older remote sensor tech.
on January 13, 2026
Posted by: Choc_Chip
from Tennessee
Verified Purchase:Yes
I purchased the device a few years ago, but did not install it right away. After replacing our HVAC unit, we had to pull new wiring for the thermostat anyway, so installed this one. It has performed nicely. I wanted a remote sensor as well. I bought 2 newer ones that were incompatible before learning it needs the older technology.
I would recommend this to a friend!
Written by a customer while visiting resideo.com
Customer Rating
2 out of 5
2
Not good
on January 12, 2026
Posted by: S008
from NYC
Verified Purchase:Yes
Scheduling & home kit never worked from the beginning
No, I would not recommend this to a friend.
Written by a customer while visiting resideo.com
Customer Rating
3 out of 5
3
T9 Thermostat Review
on January 11, 2026
Posted by: TheBobM
from Chicago
Verified Purchase:Yes
diy install was fairly easy. tstat works as promoted. app interface was easy to connect and works as described. imo, only drawback on this tstat is that there’s not a way to adjust temp variance. once a temp is chosen, furnace turns on often to keep the temp exactly at the chosen temp, rather than float a bit ( +/- 2 or 3 degrees) prior to calling for service again.
I would recommend this to a friend!
Written by a customer while visiting resideo.com
Customer Rating
5 out of 5
5
Honeywell digital WiFi thermostat
on January 11, 2026
Posted by: Anonymous
Verified Purchase:Yes
Works great , glad I can set an alarm notification temp also. And so easy to use.
Written by a customer while visiting resideo.com
Customer Rating
5 out of 5
5
Easy to install and easy to use
on January 9, 2026
Posted by: Opiewheezer
from Bozeman, Montana
Verified Purchase:Yes
I wanted a thermostat that I could adjust via an Internet connection. After a lot of research on line, I bought the T9. I installed it myself, which was easy. The instructions were clear and easy to understand. I highly recommend this product.
I would recommend this to a friend!
Written by a customer while visiting resideo.com
Customer Rating
5 out of 5
5
Anyone’s plus! Make this a have to product.
on January 8, 2026
Posted by: Larssss
from Minnesota
Verified Purchase:Yes
Excellent product. It will make your home easier to manage.
I would recommend this to a friend!
Written by a customer while visiting resideo.com
Customer Rating
5 out of 5
5
Great Upgrade
on January 7, 2026
Posted by: KentH
from Mt Shasta CA
Verified Purchase:Yes
Our local church HVAC was controlled with 6 Honeywell T7300 stats. They served there time but we needed to update the system so it could be controlled remotely and help with last minute schedule changes. The new T9s were installed with remote sensors and everything went smoothly. So far they are performing as expected.
I would recommend this to a friend!
Written by a customer while visiting resideo.com
Customer Rating
5 out of 5
5
Review of T9 Thermostat
on January 7, 2026
Posted by: LibbyS
from Chicago, IL
Verified Purchase:Yes
So far, so good. I had a HVAC tech install it and it's working like a charm. It's easy to use and we know the house temperature from anywhere, which is great for when we travel. I would recommend this product over the Google Nest, which is more expensive.
I would recommend this to a friend!
Written by a customer while visiting resideo.com
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