Honeywell Home RTH2300B1038 5-2 Day Programmable Thermostat, White

4.4 4.4 out of 5 stars | 9,132 ratings

Price: 16

Last update: 03-21-2025


About this item

5-2 DAY PROGRAMMING: Separate programs for the weekdays and weekends with 4 program periods per day including wake, leave, arrive and sleep
PRECISE TEMPERATURE CONTROL: Precise temperature control of plus/- 1 degree Fahrenheit. Temperature range limits allow you to set minimum cooling and maximum heating temperatures
DIGITAL DISPLAY: The display panel is backlit with an intuitive interface for one-touch access to setpoint temperature
EASY INSTALLATION: Easy to install yourself and works with many heating/cooling systems, plus heat pumps without auxiliary heat
REMINDERS: Built-in battery change and filter change reminders
RETAINS PROGRAMMING: Retains programmed memory in event of power outage
COMPATIBLE WITH: Gas, oil or electric furnace, Central air conditioner, Hot water system with or without pump, Millivolt system, Central heating and cooling system, Heat pump without auxiliary/backup heat.
CANNOT be used on heat pumps with backup heat, multistage systems, radiant or line voltage systems.

Product information

Technical Details


Top reviews from the United States

  • SyntaxWhiplash
    5.0 out of 5 stars Updated version of 23yr old Honeywell T8112D1005
    Reviewed in the United States on January 18, 2025
    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!
    Customer image
    SyntaxWhiplash
    5.0 out of 5 stars Updated version of 23yr old Honeywell T8112D1005
    Reviewed in the United States on January 18, 2025
    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!
    Images in this review
    Customer image
  • Micki Conrade
    5.0 out of 5 stars Great thermostat
    Reviewed in the United States on January 16, 2025
    Hubby installed this in under 5 minutes. Easy set-up. Works great. Cheap price for a thermostat. Great for people who just want a functioning thermostat
  • Diane
    4.0 out of 5 stars Great simple unit
    Reviewed in the United States on January 10, 2023
    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 info
    Backlight 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.
  • gdlf
    5.0 out of 5 stars Simple, functional
    Reviewed in the United States on January 15, 2025
    5-2 day programmable thermostats are my favorite. My household doesn't need a day-by-day or 5-1-1 programming, so this keeps things simple. It was a perfect replacement for a thermostat where one of its switches busted after years of use (and/or I pulled the thermostat off the wall while the A/C was running - don't do that to this thermostat, either).
  • amadeo
    5.0 out of 5 stars Great
    Reviewed in the United States on January 14, 2025
    Great thermostat, it works good, easy of use.
  • Dan
    5.0 out of 5 stars Most important. It works.
    Reviewed in the United States on December 14, 2024
    Simple thermostat. easy to install and works perfect.
    Most have a light that lights when your adjusting the Temp.
    This has a nice size display and very clear to see.
    Also the price was fair.
  • Annmarie Santanen
    3.0 out of 5 stars No separate heat and cool settings
    Reviewed in the United States on December 10, 2024
    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.
  • Paul Cadario
    5.0 out of 5 stars Installation 800 support was awesome and needed!
    Reviewed in the United States on January 10, 2025
    My thermostat came with the screw to secure one of the wires fully tightened and impossible to loosen. The telephone support man spent nearly 45 minutes as we sought a solution. He was very helpful and extremely patient and we got the wires attached and the furnace back on.

    Honeywell might put a little screwdriver in the box. Unless you have eyeglass repair kits any other screwdriver is too big.

    I see what other users have complained about with the smudge on the screen. Not a big deal for me

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