Customer reviews from resideo.com
Honeywell Home - T9 Smart Programmable Touch-Screen Wi-Fi Thermostat
Average customer rating
4.1
(2,934 Reviews)
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)
Customer Reviews for Honeywell Home - T9 Smart Programmable Touch-Screen Wi-Fi Thermostat
Posted by: Krish
from Dallas, TX
Verified Purchase:Yes
Works as expected. simple, reliable and easy to use
I would recommend this to a friend!
Written by a customer while visiting resideo.com
Posted by: BillAcworth
from Dallas, GA
Verified Purchase:Yes
The extra monitor allows us to have the functionality of a split system at a fraction of the cost.
I would recommend this to a friend!
Written by a customer while visiting resideo.com
Customer Rating
1
3 T9 thermostats, not working in 3 completely diff
on February 22, 2026
Posted by: MonsterMaxx
from Simpsonville, SC
Verified Purchase:Yes
These thermostats will NOT cool our home. They have worked fine on heat, but now that we are calling for cool, they do not work.
I’ve been in touch with Honeywell directely and they cannot figure out the problem.
3 T9 thermostats, not working in 3 completely different systems.
Used to work on Nest just fine. I put the Nest thermostats back and they work fine again.
These do NOT work in our home
No, I would not recommend this to a friend.
Written by a customer while visiting resideo.com
Posted by: MTTR
Verified Purchase:Yes
Good but hmm. Not fully sold on the comparability with app
No, I would not recommend this to a friend.
Written by a customer while visiting resideo.com
Posted by: Mina
from South Carolina
Verified Purchase:Yes
Had this installed. Had to call a pro because the correct colors for the wires were not used by previous installer. Love the fact I am able to control thermostat from a distance since it is stalled in a vacation home. Would recommend it without hesitation. would give 5 stars other wise
I would recommend this to a friend!
Written by a customer while visiting resideo.com
Posted by: Eric 2
Verified Purchase:Yes
Good features, but missing one important option: you can't adjust heating cycles. It's just on-off, on-off and the display temperature never changes. That's good for keeping temps even, but not efficient. Also, the space for connecting the wires is really tight.
Written by a customer while visiting resideo.com
Customer Rating
5
Great decision to install the T9 Smart Thermostat
on February 13, 2026
Posted by: Chris Groenendyk
from Batavia, IL
Verified Purchase:Yes
We switched to a Wifi Smart Thermostat and are happy to have chose the T9 Smart Thermostat from Honeywell. It has improved our heating bill by using the Geofencing mode where it conserves energy and changes the temperature to maximize energy savings. The Resideo app works well to control the thermostat from anywhere! Definitely recommend!
Written by a customer while visiting resideo.com
Posted by: Mfrostyatt
from Saginaw Mi
Verified Purchase:Yes
Works great but make sure to buy the mounting plat for a clean look.
I would recommend this to a friend!
Written by a customer while visiting resideo.com