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Your cart is empty.Honeywell - TH4110U2005/U - T4 Pro Thermostat, Programmable or Non-Programmable, 1H/1C Programmable 7 day, 5-2, 5-1-1 or Non-Programmable, 1H/1C Heat Pump, Plus 1H/1C Conventional with push button programming, and filter change and low battery reminders.
Maria H
Reviewed in Canada on February 23, 2025
I love this thermostat and bought it to replace one in the place I recently moved to. So many functions, easy control and adjustment, and the best price I could find. All good!
theDyker
Reviewed in the United States on February 17, 2025
I'm using this on a garage furnace that hangs from the ceiling and what I like about it is that I can set the "set point" nice and low, I think I've had it as low as 45.I wish the back-light were a lot brighter. I have to get out my phone's flashlight to light up the LCD so I can see when I turn it on, because normally it's set to "off" and and the "on off" indicator is tiny, and a little difficult for me to see without added brightness. So minus one star for that and it's not a big deal for my use case. Otherwise it's great for a garage thermometer.
Suzanne Hayes
Reviewed in the United States on February 14, 2025
Works great but need professional to install
omeedg
Reviewed in Canada on January 14, 2025
I recently installed the Honeywell T4 Pro thermostat, and I couldn’t be happier with its performance. The installation process was incredibly simple, even for someone with minimal experience. It’s especially convenient that it operates on batteries, making it a perfect solution for setups with only a 2-wire feed from the furnace.The thermostat works flawlessly, maintaining a consistent and comfortable temperature throughout my home. The display is clear and easy to read, and programming the thermostat was a breeze. It’s a straightforward, reliable device that gets the job done without any unnecessary complications.Overall, the Honeywell T4 Pro is an excellent choice for anyone looking for a dependable and easy-to-install thermostat, particularly for older systems with limited wiring. Highly recommended!
SWiggins
Reviewed in the United States on July 26, 2024
Upgrade my old thermostat. It was acting up. Installed this one and it plugged into the slot from our old one and copied the parameters and it's working great! Still haven't used the wifi option. Don't really need it.
Tonya
Reviewed in the United States on December 4, 2024
Great product got here quickly
Customer
Reviewed in the United States on November 26, 2024
Mean prior tenant had mangled this thermostat. Ordered this replacement and it is absolutely perfect! Simple to install and no issues.
Unhappy Customer
Reviewed in the United States on October 18, 2024
You absolutely need an separate, fast acting thermometer to set up this thermostat. The suggested cycles per hour are only a starting point. My system, older gas forced air, was supposed to be 5 cph. With the thermostat temperature set at 74, the thermostat called for heat at 71, and when the cycle completed the room temperature was 78. A 7 degree difference. The cycle took about 14 minutes but the temperature on the front of the thermostat never changed from 74.When I finished, with the same 74 degree set point, the cph was at 11. The thermostat now calls for heat about 73.5 and the cycle ends at about 76. A 2.5 degree difference. The cycle takes 12 minutes. Very satisfied with the temperature, but the display temperature still only shows 74. It showed 73 a few times. If the display was accurate, I would have given it 5 stars. If I had not experimented, I would have sent it back as defective.
Beth S.
Reviewed in the United States on January 2, 2023
This is a highly functional, high quality, great value unit that remains available at a discount price because it’s simply a few years old in design and not built for the smart home / phone app market.This is the 2nd one I’ve purchased and would buy again. I bought the 1st one 8 years ago for a different room and it’s never skipped a beat. This was considered a high tech unit until the world shifted to everything working from your smartphone. This is the perfect selection for a fully programmable thermostat for older system installs where there is no common wire or interest in smart home wifi capabilities. But this unit is not the easiest on the market to install or operate if you like to adjust from the schedule frequently and have users who have trouble learning how to use features beyond the on/off button. Lol. It’s not hard, but it can be annoying for those who struggle with technology to learn how to operate Using the menu options to shift back and forth between a programmed schedule and holds on set temperatures that you may want to temporarily set (until next programmed interval) or hold for longer by placing program on hold until “cancelling” back to the schedule.For installation,I’d rate this as moderately difficult. You should be comfortable doing an installation that requires a bit of knowledge and experience with home repairs. Honeywell rates this as requiring professional installation. I wouldn’t go that far but you should be familiar with HVAC common wiring (or comfortable reading and following instructions inclusive of multiple options) and HVAC configuration terms which are selectable through an old school software interface to set up the thermostat to match your heating and cooling system(s). For this 2nd unit I installed, I was setting up to two separate units and wiring for an oil furnace and central AC unit and got a bit confused. But I contacted Honeywell support via chat and they walked through the installation step by step and helped me to identify the one setting I had incorrect.If you are looking for a really simple installation and user interface with big numbers on an easy to use display, skip this one.But if you want a high quality and fully programmable unit that gives you the capability to move back and forth between a programmed schedule providing energy efficiency 7 days a week and temporary adjustments to meet a variety of individuals (or spouses) who frequently fluctuate from hot to cold, buy this one at a bargain price and value.
erick
Reviewed in Mexico on September 25, 2022
Recomendado
Customer
Reviewed in Canada on March 13, 2022
We had a garage heater installed in our new home and the HVAC contractor used a $3.00 thermostat that wouldn’t go any lower than 10°C. With the cost of natural gas these days that’s too warm for our needs and the mechanical thermostat was too imprecise. The pro T4 is perfect for our needs. There is no C wire with our system so the T4 is running on batteries. We have experience with this thermostat at another house we own with a garage heater and the batteries last at least a year. We can set the garage heat as low as 5°C which works well for melting the snow off the car.Note that the T4 pro apparently has a warranty only if it’s installed by a HVAC pro but the warranty is voided if installed by a homeowner. Worth the risk in my view.
Sandra
Reviewed in Mexico on July 20, 2021
Excelente producto!
Deal Grabber!
Reviewed in the United States on November 25, 2020
I have prior experience with this thermostat from another property and when the old thermostat in our home started to act up, I decided to try it out. It is a high quality item and the installation was easy! Took me about 30 mins to remove the old T and install this one! The programming is a snap. I actually looked at a video of the install just so I could get a visual of what I would need to do before I started and once I viewed it, coupled with the install manual, everything made sense on how to approach the install. So... all I can say is I'm very happy with this product, and great job Honeywell! Thank you for offering this thermostat at a reasonable price, and easy to install and use for us common folk!
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