Customer reviews from bestbuy-ca
Honeywell - THX321WFS3001W T10+ Pro Smart W/RedLINK 3.0 Thermostat and Indoor Air Sensor
Average customer rating
2
(1 Review)
Rating breakdown 1 review
5 Stars
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1
1 Star
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0%of customers recommend this product.
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Customer Reviews for Honeywell - THX321WFS3001W T10+ Pro Smart W/RedLINK 3.0 Thermostat and Indoor Air Sensor
Customer Rating
2
Glitchy, Unpolished, Not worth the money
on February 9, 2026
Posted by: codymaurer
from Regina
Thermostat, and the Redlink system as a whole, is riddled with glitches, inconsistencies, software issues, and missing user options.
Seems to maintain a constant room temperature very well, which is the only reason it gets a second star.
Sensors are slow to respond if room temperature changes, such as if a window is opened, or even if the setpoint is adjusted (0.5*C increase in setpoint results in warming nearly 1.5*C before heating stops, house then has to cool down to setpoint. This was confirmed by third-party temperature sensors).
Discrepancy of specific sensors cannot be adjusted or offset, the only available offset is for "displayed temperature" which is the total average of all sensors. This does not solve the problem when only one sensor is off (confirmed by placing all sensors together and one sensor consistently reads 1.0 - 1.5*C lower than the rest). This negates our reason for installing this thermostat and remote sensors in the first place. One sensor reading so far off from the others is also enough to permanently trigger the fan to run for Temperature Balancing Mode, even though room temperatures are actually balanced and the "imbalance" is in the incorrect sensor reading.
The thermostat's sensed temperature frequently "drops" by 1.0 - 1.5*C, triggering heat to run even though room temperature has not actually changed. This was confirmed by third-party temperature sensors. Sensed temperature will then instantaneously correct some time later.
Frequent discrepancy between the same sensor's displayed temperature in different menu screens (Home screen shows 22.0*, room priority screen shows 22.0*, but sensor information shows 20.5* all for one specific room sensor that is also set as the only priority sensor). This will happen at seemingly random times, then eventually correct so all screens show the same temperature for the same sensor. This only happens for 1-2 sensors at a time, but all of our remote sensors and the thermostat itself have done this often.
Screen brightness can be set for Active Daytime, Inactive Daytime, and Inactive Nighttime, but not for Active Nighttime (stuck at 30% and not adjustable). Nighttime mode cannot be turned off or deactivated, only narrowed to a 15-minute window in the middle of the night to minimize the change if nighttime mode changes are not desired.
Screen can not be set to turn "off" when inactive, for either Daytime or Nighttime modes. Screen can only be set to dim. Even at the lowest setting of 10%, with white background, the screen is still bright enough to cast significant light into our bedroom from the hallway, enough to illuminate the far wall and cast shadows, and even disrupt sleep. We had to set background color to black to compensate, even though white background is desired.
Screen is supposed to dim to Inactive brightness after 45 seconds of no use, but frequently gets stuck in Active brightness and will not dim until after the screen is used again. This usually takes multiple attempts of "touch the screen and wait 45 seconds to see if it dims" and often requires navigating into the menu system, several levels deep then back out, to properly reset, as it still will not dim after only tapping on the screen. This happens during both Daytime and Nighttime modes, and will light up an entire room at night when the rest of the house is dark, so fiddling with it until it dims has become a necessary part of our routine several nights a week.
While background color and behavior can be set, text color or behavior can not. Text color automatically changes based on background color, unless background is set to white, then text color changes to orange or blue based on Heating or Cooling mode. This cannot be turned off if constant text color is desired.
Overall, I would expect better for the substantial price of this system. User interface and functionality, including its basic job of accurately and reliably reading room temperatures, are both glitchy and unfinished, and leave significant room for improvement.
No, I would not recommend this to a friend.
Written by a customer while visiting bestbuy-ca