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Internet # 203539496

Model # RTH2300B

Store SKU # 514261

Top Rated

5-2 Day Programmable Thermostat with Digital Backlit Display

Limit 6 per order
$24.13
  • Easy to use, basic operation keeps programming easy
  • Weekday/weekend programming (plus up to four periods per day)
  • Program for the weekdays and weekends based on your schedule
  • View More Details

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Product Details

About This Product

The Honeywell Home 5-2 Day Programmable Thermostat with Backlight has a simple interface and offers separate weekday and weekend programming. It continually adjusts the pre-heating or cooling of your home so you are comfortable when you wake up, come home or at any other time you prefer.

Highlights

  • Compatible with heating/cooling systems and heat pumps without auxiliary heat
  • Precise +/- 1 Degrees F temperature control
  • Backlit display for easy viewing even in dimly lit rooms or hallways
  • Does not work with electric baseboard heat (120-240-Volt) or multi-stage heating/cooling systems
  • Easy to install yourself and works with many heating/cooling systems, plus heat pumps without auxiliary heat
  • Separate programs for the weekdays and weekends with 4 program periods per day including wake, leave, arrive and sleep
  • Built-in battery change and filter change reminders
  • Retains programmed memory in event of power outage
  • The RTH20B is a direct replacement for the RTH2300B, and replacement for the RTH221B offering 5-2 day scheduling
  • How to install and replace your thermostat
  • How to choose the right thermostat for your home
  • Click here for more information on Electronic Recycling Programs
  • Return Policy

Product Information

Internet # 203539496

Model # RTH2300B

Store SKU # 514261

Specifications

Dimensions: H 3.5 in, W 4.75 in, D 1 in

Dimensions

Product Depth (in.)

1 in

Product Height (in.)

3.5 in

Product Width (in.)

4.75 in

Details

Battery Size

AAA

Color Family

White

Control Type

Manual

Features

Auto Changeover, Backlit Display, Daylight Savings Time Ready

Heating & Cooling System Type

2 Stage

Included

Mounting Hardware

Pack Size

1

Power Options

Hardwired

Returnable

90-Day

Thermostat Compatibility

Universal

Thermostat Shape

Rectangular

Thermostat Type

Heating and Cooling

Voltage (V)

240 V

Voltage Type

Low Voltage

Wire Configuration

4-Wire

Warranty / Certifications

Certifications and Listings

No Certifications or Listings

Manufacturer Warranty

1 year limited warranty

Questions & Answers

Does this operate on a 12 volt system?
ByMay 7, 2026
1 Answer | 
Answer This Question

Hi Gary, thank you for reaching out! The RTH2300B Programmable Thermostat is compatible with only 24VAC systems, such as Gas, oil or electric furnace, Central air conditioner, Hot water system with or without pump, Millivolt system, Central heating and cooling system and Heat pump without auxiliary/backup heat. If further questions arise, you can reach us 7 days a week via phone at 800.468.1502.— Charlie

By|May 7, 2026


    How to program
    ByApr 19, 2026
    1 Answer | 
    Answer This Question

    Hi Carrie, thank you for your question. To adjust program schedules (RTH2300) press SET 3 times, then adjust time. Press SET until Set Schedule is displayed, then press the up or down button to set your weekday Wake time (Mo-Fr), then press SET. Press the up or down button to set the temperature for this time period and then press SET. Set time and temperature for the next time period (Leave). Repeat steps for each weekday time period. Press SET to set weekend time periods (Sa & Su), then press RUN to save & exit. Make sure the thermostat is set to the system you want to program (Heat or Cool). - Maria

    By|Apr 20, 2026


      How to set thermostat for cool temperature?
      ByMar 23, 2026
      1 Answer | 
      Answer This Question

      Hi, thank you for your question. For cool please make sure to set the system switch (bottom left) to the cool option. Use the Up/Down button to change the setpoint. Feel free to contact our tech support team at (800) 633-3991 if you have further questions or need assistance. - Maria

      By|Jun 2, 2026

        (1)

        Is this wired or battery
        ByMar 17, 2026
        1 Answer | 
        Answer This Question

        Hi Kathy, thank you for reaching out! The RTH2300B thermostat requires batteries to operate. If further questions arise, you can reach us 7 days a week via phone at 800.468.1502. — Charlie

        By|Mar 19, 2026


          Do I change it from gas to electric when using the a/c ?
          ByMar 17, 2026
          1 Answer | 
          Answer This Question

          Hi Mike, thank you for reaching out! We'd like to know more about your system to further assist. At your convenience, please reach out to us at 1-800-468-1502, we will be happy to help.— Charlie

          By|Mar 19, 2026


            How many wires
            ByFeb 14, 2026
            1 Answer | 
            Answer This Question

            Hi Robert, we will be happy to help verifying the compatibility of this thermostat and your system. We need to know how many total wires you have and which terminals are being used on your current thermostat. Feel free to contact our tech support team at (800) 633-3991. - Maria

            By|Feb 17, 2026


              What settings should be on face
              ByFeb 1, 2026
              1 Answer | 
              Answer This Question

              Hi Jackie, we will be happy to help you with the thermostat operation. At your convenience, please feel free to contact our tech support team at (800) 633-3991. - Maria

              By|Feb 2, 2026


                What is the temperature swing?
                ByJan 26, 2026
                1 Answer | 
                Answer This Question

                Hi Jeff, thank you for reaching out! The temperature swing uses a +-1 °F degree, swing setting or differential setting to maintain the setpoint for both heating and cooling on the first stage, this is not adjustable. If further questions arise, you can reach us 7 days a week via phone at 800.468.1502.— Charlie

                By|Jan 29, 2026

                  (1)

                  Viewing 1-8 of 456

                  Customer Reviews

                  4.1 out of 5

                  • 4.1 out of 2,572 reviews
                  • 73% recommend this product
                  Filter by:
                  Showing 1-10 of 2,572 reviews
                  This customer chose to rate the product and not provide text.
                  by
                  • Verified Purchase
                  It's a very good thermostat with extra setting for weekend and weekdays easy to install.
                  by
                  • Verified Purchase
                  1 found this review helpful
                  VERY easy to install. Saved $100 by installing myself. Thermostat price was very reasonable. Worked within seconds. No problems.
                  by
                  • Verified Purchase
                  This customer chose to rate the product and not provide text.
                  by
                  • Verified Purchase
                  Good thermostat, unreliable display
                  The thermostat is simple to install and fairly easy to program. The display faded to be unreadable after a year. That poor quality component earned three stars.
                  by
                  Response from Resideo TeamOct 18, 2024
                  Hi, thank you for taking the time to rate the 5-2 Day Programmable Thermostat, we appreciate the feedback and will utilize your comments as we update our products. -Joey resideo
                    • Recommended
                    I bought this thermostat to replace the previous one that broke. I like the simplicity of the 5-2 settings and being able to set wake, leave, return and sleep temps during the week as well as having the separate for Sat and Sun. This one seems to work a lot better than the old one, before it broke. It satisfies what I need to make sure my wife and I are comfortable in our home.
                    by
                    • Verified Purchase
                    2 found this review helpful
                    Confusing Setup,Bizarre Defaults,DO NOT TOUCH
                    I'm utterly frustrated and exasperated trying to get simple functions.Beware - this model has the most bizarre setup,pre-programmed,and it's very difficult and counter-intuitive to try to get it to function on manual - or my own setting.After trying to change the clock time for Daylight Savings, I'm sorry I ever touched the SET button. The directions are twisted and don't work. The internal settings are for the birds,literally. It resets to default schedules that are maddening and wake me when my furnace kicks on at unexpected times, 4 times a day. I bought this model because I needed a single simple program. Whoever designed this seems out of touch with the needs of a common home such as mine. This is so bad, I suggest getting a different model with better reviews.
                    by
                    Response from tech supportNov 13, 2023
                    Hi Joga, we are truly sorry to hear about this. This is not what you should expect. To adjust your schedule, please press the 'Set' button 3 times until 'Set Schedule' appears on the screen. The start time of the Wake period of the weekdays (Mon-Fri) will flash, press the Up or Down button to set the time and then press the Set button. The temperature setting for that period will flash, to program the temperature settings for the cooling mode, place the System switch in Cool. To program the temperature settings for the heating mode, place the switch in Heat. Press the Up or Down button to set the temperature and then press the Set button. The start time of the next period will flash. Repeat steps for each of the remaining periods. Once all changes are made, press the Run button to save them and exit. To override the schedule you can just use the Up/Down button to set your desired temperature and press the Hold button. You will see the word 'Hold' on the screen, showing that it is not using a schedule. To resume schedule, just press the Run button.
                      Good product
                      Love everything about it except for the 1 section of the screen that is clouded, this was installed by a professional Electrician.
                      by
                      • Verified Purchase
                      • Recommended
                      2 found this review helpful
                      DECENT BASIC 5/2-DAY PROGRAMMABLE THERMOSTAT
                      It was pretty easy to install and program. Basic unit for older system without C-Wire needed for Wi-Fi thermostats. Only minor, and reason for not 5-Stars was that thermostat screen has minor "gray smudge" in lower right corner. I returned original unit, and re-purchased on-line - and second unit was same. Only notice when press controls and LED lights up, but annoying just the same.
                      by
                      • Verified Purchase
                      • Recommended
                      1 found this review helpful
                      Good for the low price
                      I use this for my central air and heat (not heat pump). It was easy to install and works perfectly. I am using it in an advanced manner with some extras devices attached so there are more wires in the photo. Be careful when setting the back side switch. The center position seems to do nothing so switch full left or right.
                      by
                        • Recommended
                        Showing 1-10 of 2,572 reviews

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                        Product Snapshot

                        Great for homeowners looking for simple programming, making temperature control easier and more efficient.
                        Great for homeowners looking for simple temperature control, making climate regulation easier. This programmable thermostat offers personalized scheduling and a backlit display for convenient use.
                        Great for homeowners looking for flexible scheduling, making temperature control easier and more efficient.
                        Great for homeowners looking for energy savings, making temperature control easier and more efficient.

                        Smartphone App Control

                        Learning Capability

                        Energy-Saving Features

                        Voice Control

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