Honeywell TH4210U2002 T4 Pro Programmable Thermostat 2H/1C 1H/1C
$81.07
Price: $81.07
(as of Oct 01, 2025 13:24:52 UTC – Details)
2H/1C HP/1 HEAT 1 COOL CON PRO
Uses the UWP mounting system that’s standard across all T Series thermostats
Simple push-button functionality, LED backlight, medium display with soft key controls, Filter change reminders
Includes thermostat, UWP mounting system and installation (J-box) adapter
Customers say
Customers find the thermostat works great and appreciate its quality, with one mentioning it’s a good replacement for older Honeywell models. The device is easy to install and offers great value. While some customers find it easy to program, others note that the programming process is more complicated.
10 reviews for Honeywell TH4210U2002 T4 Pro Programmable Thermostat 2H/1C 1H/1C
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DRTIMOTHY HATCHER –
Works very well
Great quality. Works very well.
Pablo –
like new product. Works as advertised
Quick shipment with prime. Product was as advertised in description. Excellent pricing as compared to new. Almost 50% less and it was hard to tell it it was ever used. Just looked like open box. With manual thermostat is easy to program however I needed to call an HVAC friend to help point me in the right direction.
Amazon Customer –
Tiny numbers on the thermostat
Pricing wasn’t too bad, recommended by our HVAC repairman. Only problem is trying to focus on the tiny numbers on a screen without a lighted background. Easy to program if you are holding a flashlight.
Casey Rice –
Great value
We needed a new thermostat and this one was perfect. It was easy to change out and does the job.
Ashley –
Works well
Purchased as a replacement for an existing unit and it works great so far
CAVE MAN –
money wasted lesson learned
worked…ish… for 5 months and now it’s trash .i had the same one Non programablegot this one to find out that programming on it is worthlessnot 5-1-1 , it’s suppose to be 5+2, but On-only once a day whaaa?pointless . then it wouldnt turn on at random times ,temperature on display is of by 2 degrees +clicking back and forth to get it going and when it does it would stall out before getting to set tempthen it’ll run perfect for few days and go crazy again .i ended up putting the old one back on untill i get a new different onethis one was a waste of money .
Amazon Customer –
Works well, with effort
This does what it says.Read the whole list of setup options and install yourself with confidence.I bought for the AUTO mode. This is not a default mode. You have to configure it through the menus.Set a heat temp separately. Permanent holdSet a cool temp separately. Permanent holdSet to ATUO mode, and it will switch between modes as you go over/under your set temps by a degree or two.has two mounting options, I used the bigger plate as I was installing in place of a larger older unit.Once setup, walk away and forget it!
Kassandra –
Great experience
I was pleasantly surprised when my product arrived ahead of schedule! It came beautifully packaged and matched the description perfectly. Thank you for such a wonderful experience!
Paul C. –
Great thermostat, luv it
Cong –
I use for hitting.