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
Great wifi home thermostat!
on December 17, 2025
Posted by: MarleyNS
from Nova Scotia, Canada
Verified Purchase:Yes
I was having major issues connecting new fibre internet to my smart devices. I finally decided to update my ten year old Honeywell T5 for a T9 which is the only unit that services both 2.4 and 5 ghz wifi frequencies. Easy to re-install. With help from the Residio and internet provider techs I soon had all my smart devices synced. My new purchase came with a room sensor which I put in my 2nd floor master bedroom. Now I enjoy scheduled temperatures throughout the day and night and remotely when I'm away.
I would recommend this to a friend!
Written by a customer while visiting resideo.com
Customer Rating
5 out of 5
5
My T9 Smart Thermostat
on December 17, 2025
Posted by: José M.
from Park City Utah
Verified Purchase:Yes
I like this product because it is comfortable, simple and easy to use, very useful and beneficial.
I would recommend this to a friend!
Written by a customer while visiting resideo.com
Customer Rating
5 out of 5
5
Great thermostat
on December 17, 2025
Posted by: Home_Owner
Verified Purchase:Yes
Great themostat only draw back the room sensors are not backwards compatible this one only can link to 1st generation sensors which are considered out of date. Otherwise works like they said and is easy to use
Written by a customer while visiting resideo.com
Customer Rating
1 out of 5
1
Not compatible
on December 17, 2025
Posted by: Compatible
from Mission, BC Canada
Verified Purchase:Yes
Not compatible with my existing 2 wire (C & R) honeywell furnace board that was only a few years old. The furnace itself had multiple wires going to the board (W etc). So it was frustrating to find I wasn’t able to get an adapter or replacement board to make this work.
No, I would not recommend this to a friend.
Written by a customer while visiting resideo.com
Customer Rating
4 out of 5
4
Love it
on December 16, 2025
Posted by: AnitaH
from Colorado
Verified Purchase:Yes
New thermostat works really well. I love the circulation feature with a remote temperature sensor. It reduces the temperature difference between our main level and lower level.
I would recommend this to a friend!
Written by a customer while visiting resideo.com
Customer Rating
3 out of 5
3
Registration issue
on December 16, 2025
Posted by: Tango Echo
from Washington State
Verified Purchase:Yes
Good product overall, however, since it was a refurbished/used product, I was unable to register utlizing the mfg suggested actions. Still connected to 3d party home automation device with no issue.
I would recommend this to a friend!
Written by a customer while visiting resideo.com
Customer Rating
1 out of 5
1
Thermostat
on December 15, 2025
Posted by: DBSS
Verified Purchase:Yes
It wouldn't work with our system. Product was returned.
Written by a customer while visiting resideo.com
Customer Rating
5 out of 5
5
So far so good.
on December 13, 2025
Posted by: TexasComfort
from Dallas, Texas
Verified Purchase:Yes
Once we figured out how to wire the common wire everything was easy. Installed two T9 thermostats and have found them to be reliable devices both in A/C and Heat mode.
I would recommend this to a friend!
Written by a customer while visiting resideo.com
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