This thermostat has changed my power to control my a/c or heat from my IPHONE. I was recently on the way to airport and my daughter was on her way to my house. She asked if I could cool down the house prior to her visit. I did in just an instant.
Easy to set up, nice to be able to see and CHANGE settings remotely
I would recommend this to a friend!
Written by a customer while visiting resideo.com
Customer Rating
1
Poorly designed
on May 11, 2021
Posted by: Tech Savvy
from Utah
Frequency of use:Daily
Gender:Male
I have discovered through three replacement T6 Pro Smart Thermostats with 2 stage heating that there is a serious design flaw that affects the heating efficiency. When these thermostats heat in stage 2, they overshoot the set temperature by about two degrees. For example, if you have your daytime temperature set to 70 degrees, the thermostat does not shut down the call for heat at 70 degrees but continues to run your furnace until the room temperature reaches 72 degrees. This may take up to an additional hour of stage two heating to reach the two extra degrees. This results in a waste of fuel and cost. This negates the reason you bought a high efficiency furnace at a dear cost in the first place. Once the room temperature reaches the overshoot temperature, the thermostat still tries to overheat for a period of time in stage one before it settles down to the set temperature. After the room temperature decreases to the set temperature and below, the call for heat in stage 1 operates correctly and except in very cold days, the thermostat works well in maintaining the room temperature at the set temperature. Also be aware that the room temperature display (at the set temperature) combines the degree above and the degree below into the set temperature display, to the display reads 70 degrees when the room is at 69, 70 or 71 degrees.
This design error is not present in earlier models of Honeywell thermostats, as for example with the TD6220 series, which works correctly. I recognize this as a very poor design that can be corrected by the design engineers, and even updated automatically. I would hope the design department would notify me when the design has been improved so I can remove this negative posting.
Came with my new house. I wouldn't buy one. The WiFi is good ... when it works. Has lost connectivity and then has to be reconnected (doesn't remember the WiFi password)