Review of Honeywell TH4110D1007 Programmable Thermostat

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List Price: $84.57
Sale Price: $39.31
Today's Bonus: 54% Off

I purchased this unit to replace an old rotary-style thermostat. This works very well with our central-air system. Setup allows you two programs: M-F and Sat-Sun

For each program, you can specify Four Temperatures and their respective times:

1. Temp at wakeup (wake)

2. Temp during the day (leave)

3. Temp in evening (return)

4. Temp for overnight (sleep)

This was fairly easy to install as a replacement for our old unitfasten wall plate onto wall, insert wire leads into well labeled connectors, insert included backup battery, snap main unit into wall plate, viola!

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After changing the batteries on the unit, the unit stopped working correctly . After trouble shooting on my own and reading up online, it was very clear it was the motherboard. I called honeywell, and they said the installing plumbing contractor would have to be called ( 80$ service call NOT to be covered under the 5 year warranty) in order for the licensed contractor who originally purchased the unit would have to be the one to file a claim. What if they are no longer in business! I told them I would happily pay for the replacement cost, but they said they could do nothing without the contractor calling and the contractor can't call unless they come out for a 80$ service call. Now that I know this "racket" , I would like everyone to know to ask their heating contractor to put in a "non-professional" thermostat that can be purchased at home depot , lowes , etc. That way i can serviced by you without the expensive service calls. I think Honeywell could have given me a chance to just get a new faceplate. They were unfriendly about it as well. Stay away from any models that start in TH and go for the PTH and save a lot of time and money.

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I bought this to replace a previous Honeywell thermostat:

that went flaky on me after about 4 years.

I was initially reluctant to buy another Honeywell, but after reading reviews decided that maybe this was the best choice for me. The convincing factor for me is that this is from the "Pro" line, so it comes with a 5 year warranty. Although I have no clue if that means that it's built any better or with any better quality components or not.

I'm not really sure what makes it a "Pro". They don't actually intend for it to be sold to anyone but contractors, which is somewhat absurd imho. There are a lot of settings that I don't necessarily care about, and going through them requires a somewhat non-intuitive setup phase (that you probably won't be able to figure out without a manual). So maybe that's the reason. But once you have it set up, the basic operation (including changing program values) is reasonable simple and intuitive and just like any other programmable digital thermostat that I've used.

I was a bit wary of the AIR (Adaptive Intelligent Recovery) feature, where the thermostat doesn't turn on when you set it, but instead tries to predict when it ought to turn on to be at the selected temperature at the selected time. Sounds like something that sounds great in theory, but might be flaky in practice. Esp. since one of the reviewers complained about it, as well as getting no help from customer service in trying to disable the feature. I decided that I was only going to buy the thermostat if this could be disabled. But the owner's manual gave no info about how to do that.

So I called customer service. I got a reasonably helpful person who was not an idiot and could speak English. (And when I asked a question he didn't know the answer to, he didn't just make something up -he put me on hold and found someone else that knew the answer.) Anyway, the bottom line is that yes you *can* disable this. While the owner's manual doesn't cover this, the installation guide does. While these both come with the thermostat, they are also both available online. The owner's manual is here:

Fwiw, selection 0 in setup function 13 turns AIR off.

I can't speak to how well the AIR does or does not work, since I just disabled it during setup.

So far it seems to work, although I don't really have too many things I'm looking for in a thermostat. (Although it does improve upon my previous model in various respects, like having a backlight, and having a more informative display, and not requiring removing the panel to program it, and actually doing the right thing when you set a temporary temperature by keeping that valid until the next program change.)

I do have a few minor complaints about the physical design. I would like to see a few more holes in the backing plastic piece to give you some more options wrt where to mount the thermostat and where to run the wires. I had a few constraints relative to my existing installation, so I ended up using the existing left mount hole as is; ignoring the hole for running the wires; using the right mount hole for running the wires; and drilling a new hole for the second mount hole. Not a huge deal, but I could understand if some people would be nervous about drilling into the plastic. Also, I was able to run my wires through the small mount hole b/c I only have a 2 wire system. For a more complicated system, that might not have worked and I might have had to drill a larger hole.

Also, it's a bit of an effort to remove the main unit from the base, which is necessary to change the batteries. I'm nervous that that will put excessive stress where the unit is mounted into the plaster. I guess I'll just have to try to be as gentle as possible.

Honest reviews on Honeywell TH4110D1007 Programmable Thermostat

The value is excellent, and it's fairly easy to install. We have one of these for our upstairs unit and it works well. Configuration is intuitive and the backlight automatically turns off after a fairly short timer. It allows 4 time slots for M-F and 4 time slots for S-S. This does not auto-switch between heat and cool, but otherwise, its' great.

The "Adaptive Intelligent Recovery" is kind of annoying. To turn it off, hold both up and down arrows to go into config mode. Cursor UP to get to function 13, and cursor DOWN to change it to ZERO for off. Then hold both buttons again to exit and save.

This unit uses a couple of AA batteries, or it can use the C (common) line from your AC's transformer. Batteries last 9-12 months in this.

The manual is decent, but this version forgets to have you label the old thermostat wires before you disconnect the old thermostat. This model isn't directly listed anymore, and seems to be replaced by RTH4300B; however, Honeywell still has its manuals online. I'm not sure if Amazon will scrub URLs or not, so here they are expanded and linky:

Installation manual:Operating manual:Sales Slick:

Find helpful customer reviews and review ratings for Honeywell TH4110D1007 Programmable Thermostat

Very easy to install and set up a program so it works properly

A must if you wanna make your life easier

Also Honeywell has an amazing customer support