Your cart is empty.
Your cart is empty.The T3 Pro is designed for those who want to keep their comfort simple. This intuitive non-programmable thermostat has an easy-to-read digital display, up and down vertical buttons and a rectangular footprint that makes it ideal for covering up old thermostat wall marks. Features 1H/1C and 2H/1C Heat pump model Ready out of the box Large, backlit digital display Intuitive up and down vertical buttons Precise comfort accuracy of +/-1°F Minimal callbacks UWP for easy upgrades 5-year warranty Private label available for co-branding Warning: This product can expose you to chemicals which is [are] known to the State of California to cause cancer and birth defects or other reproductive harm.
Michael R
Reviewed in the United States on February 13, 2025
Bought two thermostats, one was a simple two wire just for a side furnace and the other was 5 wire system for my main furnace. Both easy to install and work great. Simple installation and instructions tp follow. Defiantly worth the upgrade.
Jason R.
Reviewed in the United States on January 9, 2025
Fast easy install and it works great- digital is much nicer to look at than those old dial thermostats.
Larry
Reviewed in the United States on July 28, 2024
Bought this to replace my old t/stat which was also a Honeywell device. Great company that's been around for years so I trust the name. I like the way it operate and the light up screen is great for any evening temp/mode adjustments that I might need to do. Will continue to buy Honeywell in the future.
Sue
Reviewed in the United States on December 20, 2024
Our serviceman suggested a T3 because it was digital and easy to read and easy to adjust temperature and from heat to cool. He had no problem removing our original 50 year old thermostat and installing this one. We have not adjusted the temperature since it was installed 30 days ago. The larger numbers on the screen is just what we needed.
Roger Blankenship
Reviewed in the United States on November 7, 2024
I had the same one in my house messing up, plugged in the new one and it works great. It did come in a day later than it was supposed to.
Chris
Reviewed in the United States on January 12, 2024
I have a simple forced hot water baseboard system with two wires. Should be easy to install, but this is designed for more complex systems. Went through countless trouble shooting videos and followed directions in every which way multiple time in case I missed something. Ended up throwing it away and went to the cheap simple spin dial system.
Kindle Customer
Reviewed in the United States on November 25, 2023
MY thermostat is in a long hallway lit from the middle. The light falls tangent to the screen, so the temp and setting are only legible if you poke it to light up the screen. It's as stupid as having a wall clock that only gives the time when you poke it! None of the other thermostats on Amazon admit to being able to have the light stay on all the time (not, of course, when your house power is off and the battery is being used to keep the electronics alive). By looking at the online installation manuals I found that this one has such a setting. Since it was replacing an older but otherwise identical Honeywell thermostat, no rewiring was required in this case... I just pulled off the old one and plugged the new one onto to the wiring board.One surprise: I was ready to send it back. While cycling through the settings, the continuous light option was not available! It turns out that this option is visible only when the thermostat is getting power from the furnace rather than just from the battery. I turned the circuit breaker back on and there it was. Works perfectly and the brightness is adjustable.
TCC
Reviewed in Canada on March 17, 2022
2 Wires for Easy Installation , maintains the temperature you set and because it's not programmable , it's not complicated. The changing of temperature is very easy when required , it's just plus or minus and the indoor or set temperature displays are very easy to read.
M. Palmer
Reviewed in the United States on January 25, 2022
Instructions were very clear and it was a quick install. Great upgrade from an old Honeywell slide thermostat that didn’t display the temperature anymore.This thermostat blends in well and is aesthetically pleasing. Functions well with a dual-zone oil fired hydronic system. The initial settings allow you to confirm your type of system and if there is a cooling element involved (mine is just heating, separate zone upstairs).Temperature seems to be accurate and cycles appropriately. Works well without a common wire and on battery power. Would love to install a C-wire in the future.This is a basic, non-programmable thermostat and sometimes that is the best part and all that you need.I would recommend this thermostat for similar applications.
Recommended Products
$26.95
$ 12 .99 $12.99