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
(2,829 Reviews)
Open Ratings Snapshot
Rating breakdown 2,829 reviews
5 Stars
1,643
4 Stars
555
3 Stars
253
2 Stars
140
1 Star
238
81%of customers recommend this product. 
(
1,771 out of 2,180
)
Best Buy Privacy Policy
Customer Reviews for Honeywell Home - T9 Smart Programmable Touch-Screen Wi-Fi Thermostat
Customer Rating
5 out of 5
5
great product
on November 6, 2025
Posted by: studad
Verified Purchase:Yes
No concerns with the thermo, installed super easy and easy to program. And finally, easy to get the app and install on ipad. Great product.
I would recommend this to a friend!
Written by a customer while visiting resideo.com
Customer Rating
2 out of 5
2
Not happy with T9 Smart Thermostat
on November 6, 2025
Posted by: Hallmark
from Reno NV
Verified Purchase:Yes
I have a schedule set for the times I want my AC/heater to start. The T9 starts them 30-45 mins before the time. This morning the heat came on at 3:08am instead of 4:45am. It has a mind of its own. I just my thermostat to run according to my requests, not when it wants to...
Written by a customer while visiting resideo.com
Customer Rating
5 out of 5
5
Honeywell T9 with Remote Room Sensors
on November 7, 2025
Posted by: Anonymous
from Fallbrook, CA
Verified Purchase:Yes
Great Smart Thermostat. Requires a 'C' wire for power. Caution when buying EXTRA remote room sensors to make sure they are Series 3 or 4 to be compatible with the Smart thermostat, you can only read the series # by opening the package, opening the battery compartment, and looking at the tiny circuit board for a teeny tiny 3 or 4 that is rotated 90 degrees from the other numbers. If a "1" (or 2 I think), they may note link to the smart thermostat unfortunately. If they link, they work GREAT to allow the Smart thermostat to average the room temperatures then apply that to your heat of cool settings. I highly recommend the the thermostat and remote room sensors (the more the merrier).
I would recommend this to a friend!
Written by a customer while visiting resideo.com
Customer Rating
5 out of 5
5
Love this thermostat
on November 11, 2025
Posted by: Dmocean52
from Ft worth Texas
Verified Purchase:Yes
Great thermostat because I can control it with my phone and would recommend
I would recommend this to a friend!
Written by a customer while visiting resideo.com
Customer Rating
5 out of 5
5
Easy and great
on November 11, 2025
Posted by: Willy1234
Verified Purchase:Yes
Easy to use, helps maintain temp great. Has saved me money on bill.
I would recommend this to a friend!
Written by a customer while visiting resideo.com
Customer Rating
5 out of 5
5
This a great thermometer!
on November 11, 2025
Posted by: Tavion
from Bowie, MD
Verified Purchase:Yes
The thermometer is very efficient and is simple to use. It works with the Wi-Fi and the ability to control the device with my phone is helpful.
I would recommend this to a friend!
Written by a customer while visiting resideo.com
Customer Rating
5 out of 5
5
Great tool and easy to install
on November 12, 2025
Posted by: Clint F
from Pinehurst, Texas
Verified Purchase:Yes
Easy to install and easy to link with app for complete control of my system.
I would recommend this to a friend!
Written by a customer while visiting resideo.com
Customer Rating
4 out of 5
4
Works as I had expected
on November 13, 2025
Posted by: Tom Z
from Rogers , Mn
Verified Purchase:Yes
Thermostat replaced my outdated Nest Thermostat. Works fine and like the geofence feature. Only thing that would be nice is that the screen on the thermostat stays lit all the time. Would be nice if it darkened when not looking at it to adjust it.
No, I would not recommend this to a friend.
Written by a customer while visiting resideo.com
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