HoneywellHome RTH2300B1038 5-2 Day Programmable Thermostat, White

Simple thermostat. I like the display lights up. Easy install as it was replacing the simpler variant.

All useful functions. Easy to program. Does everything needed at a great price.

One year later, I knocked a star off. I *hate* the one degree swing. My radiators barely get warm and it turns off. Because the radiators barely get warm during the short time it's on, the house just doesn't feel as warm. And it comes on more often. To try to counteract that, I've turned the radiator in the thermostat room nearly off, but it's still picking up the heat from the adjoining room. I feel like I have to rebalance my entire house, which had worked well through multiple thermostats for 30 years before this one.I have a steam boiler with cast iron radiators. YMMV with a different system.*****I'd give this 4.5 stars for a simple 2 wire milivolt system. Like others, I had to call tech support to confirm the wire coloring. Putting labels on the current wires means nothing if your wiring and your old thermostat are not identical to the new one. Don't bother messaging them through facebook as it's been weeks and they haven't responded, but they did answer the phone quickly. Once I remember the wire colors I'll update the thread as others here were also wrong.I also have the discolored area in the lower right corner but it hasn't changed since install.Pluses: it works well once you get the wires correct. Heat turns on and off when I ask it to and it's pretty simple to override the set program.Cons: Don't even open the manual for wiring infoBacklight only works if you hit a button, which happens to be the same button you'd use to override the temp. So don't hit it too hard or you may turn your heat on.It's an extremely basic unit. I do miss the feature my old one had where I could see how long the heat was on each day, but not enough to pay twice the price.

I don't care for smart systems, so this is the most I really need. The backlit display is extremely useful for reading the display at night or when it's dim inside; it's easy to use and just works. It's a great upgrade over my old analog mercury ones that weren't super accurate and were easy to over-adjust by accident.

My old Honeywell programmible stopped working after 9 years and it was hard to set programs. This one was inexpensive, easy to install and simple to set programs.

Condo came with old Honeywell T8112D1005, but it was kinda doing that weird "speak and spell" when the batts are dying thing and the display was going all kooky, so this is like the new version of that.I'm very pleased with the easy to understand instructions, simplicity of the device and i thought it was a very reasonable price. It solved my issue and looks good. Easy to program m-f and set a weekend program too. Very happy with this purchase!

This review is for the Honeywell RTH2300B1038 5-2 Day programmable thermostat. It works OK (meaning that it turns my furnace on and off), but it has several drawback that don’t match its higher price point over less expensive thermostats that have greater functionality.Installation was not quite as straight forward as I expected, I had to cross reference some youtube videos to make sure I was correctly leaving the blue thermostat control wire disconnected. A few extra details in the instructions would be helpful here. The first thing I noticed when it was connected and powered up is that it had the same dark/dirty area in the lower right corner of the green backlight that everyone else has pointed out. Definitely some quality control issues during manufacturing here. There’s a confidence booster… This isn’t really a big deal, because I don’t need to use the backlight.The next think I noticed was the deal breaker for me: though there is a five-day and a two-day program, there is only a single group of settings that will apply to BOTH the heating and cooling cycles. During the winter, we keep our furnace set a bit lower, usually around 67 degrees. During the summer, we keep the air conditioning set higher, around 75 degrees. You cannot achieve these setting with this thermostat - you only get one set of settings. This means you have to reprogram the thermostat every time the season changes. Call me lazy, but this introduces hassle that wasn’t present with my previous thermostat. This means I would need to write down the settings in some place that I’ll be able to find six months later. No thanks.The next thing that I noticed is that this Honeywell thermostat causes my furnace to cycle much more frequently than the old thermostat did. This results in more wear and tear on your furnace and air conditioning compressors. There might be a place to adjust this behavior, broadening the temp spread for the turn-on and turn-off points, but given that it only has a single set of time/temp settings, I had already made up my mind to return it, so I didn’t bother looking through the manual to see if this is possible or not.If you find yourself in need of a new thermostat, save a few dollars and pick up a Lux Pro PSP511C thermostat that is much better. It has separate time/temp setting for heating and for cooling and you can easily adjust the on/off temp spread so your equipment cycles less often. This saves wear and tear and is also more energy efficient.