#1 Home Improvement Retailer

Internet # 333940694

Model # RTH20B/N

Store SKU # 1013627715

Product Images

X2P Programmable Thermostat, Single-Stage, 1-Heat/1-Cool, 5-2 Day Schedule

$39.98
Apply Now
Pay $14.98 after $25 OFF your total qualifying purchase upon opening a new card. 
Apply for a Home Depot Consumer Card
  • Compatible with single-stage 1 heat/1 cool systems
  • 5-2 day scheduling allows for personalized programming
  • Customize to receive change filter reminders and display settings
  • View More Details

Free & Easy Returns In Store

Return this item within 90 days of purchase.

Read Return Policy

Ask about this product

Get an answer now with AI

Magic Apron Assistant is an AI virtual assistant. By proceeding, you consent to the recording and use of your information by The Home Depot (and authorized third parties). More information

Product Details

About This Product

The Honeywell Home X2P Programmable Thermostat is optimized for single-stage 1-heat/1-cool systems. The 5-2 day scheduling technology allows for personalized programming to fit your lifestyle. It's a quality thermostat for your home that can be customized to receive change filter reminders and select display settings.

Highlights

  • Compatibility: 1 heat/1 cool, 750 MV, hot water heat, forced air (gas, oil, or electric) [does not work with electric baseboard heat (120-240V)]
  • Schedule: personalize programming in 5-2-day increments
  • Features: 5-2-day scheduling, backlit display, custom display settings, change filter reminder, extended 32°f low-heat setpoint, 1-year warranty
  • Experience: a large screen and clear font enhance daily use
  • Customize: choose to receive change air filter reminders and select display settings to optimize this thermostat for home
  • Installation: the Honeywell Home UWP wall plate provides an easy install process and simplifies future device upgrades
  • POWER: 2 AA batteries (not included)
  • The RTH20B is a direct replacement for the RTH2300B, and replacement for the RTH221B offering 5-2 day scheduling
  • Click here for more information on Electronic Recycling Programs
  • Return Policy

Product Information

Internet # 333940694

Model # RTH20B/N

Store SKU # 1013627715

Specifications

Dimensions

Product Depth (in.)

1.17 in

Product Height (in.)

3.43 in

Details

Battery Size

AA

Color Family

White

Control Type

Manual

Features

Backlit Display, Battery, Filter Indicator

Heating & Cooling System Type

Single Stage

Included

Mounting Hardware

Pack Size

1

Power Options

Battery Operated

Returnable

90-Day

Thermostat Compatibility

Furnace

Thermostat Shape

Rectangular

Thermostat Type

Heating and Cooling

Voltage (V)

24 V

Voltage Type

Low Voltage

Wire Configuration

C-Wire

Warranty / Certifications

Certifications and Listings

Matter

Manufacturer Warranty

1 year limited warranty

Questions & Answers

What is in the package
ByNov 6, 2026
1 Answer | 
Answer This Question

Hi BenZ, thank you for your question. The package includes the thermostat, a UWP, literature, screws and anchors. - Maria

By|Nov 9, 2026


    How to change battery
    ByNov 4, 2026
    1 Answer | 
    Answer This Question

    Hi, thank you for your question. Remove the face plate of the thermostat from the wall by pulling it straight towards you. You will find the battery holders on the back of the face plate. - Maria

    By|Nov 5, 2026


      What button do you push to turn off the ac?
      ByNov 4, 2026
      1 Answer | 
      Answer This Question

      Hi MsHammer, thank you for your question. Press the MODE button to cycle to the next available System mode. Cycle through the modes until the desired System mode is displayed. Available System modes vary by model and system settings. System modes: • AUTO • HEAT • COOL • EM HEAT • OFF. - Maria

      By|Nov 4, 2026


        does this connect to internet
        ByOct 31, 2026
        1 Answer | 
        Answer This Question

        Hi Janet, thank you for your question. This is not a Wi-Fi model. We will be happy to recommend you the Wi-Fi version model number. Feel free to contact our tech support team at (800) 633-3991. - Maria

        By|Nov 4, 2026


          Does this include all the wires and things needed to be hooked up
          ByOct 27, 2026
          1 Answer | 
          Answer This Question

          Hi sheyenne, thank you for your question. The thermostat package includes: Screws and anchors, UWP™ Wall Plate, Literature and Thermostat. The wires that you should be using are the wires coming out of your wall. If you need assistance with the thermostat installation you can reach out to our tech support team at (800) 633-3991. - Maria

          By|Oct 28, 2026


            Is this device compatible with gas heaters?
            ByOct 8, 2026
            1 Answer | 
            Answer This Question

            Hi Lindsay, thank you for reaching out! The X2P Programmable Thermostat is compatible with 1 Heat /1 Cool, 750 mV, hot water heat, forced air (gas, oil, or electric). Does not work with electric baseboard heat (120-240V). If further questions arise, you can reach us 7 days a week via phone at 800.468.1502.— Charlie

            By|Oct 8, 2026


              Does the screen go dark at night? It will be in a bedroom we need something that will not cast a light at night. Thank you.
              ByOct 6, 2026
              1 Answer | 
              Answer This Question

              Hi Goldensmum, thank you for your question. The screen idle brightness cannot be adjusted on this thermostat. We can recommend you a thermostat with this feature at (800) 633-3991. - Maria

              By|Oct 6, 2026


                Is it solid state no clicking sound?
                BySep 26, 2026
                1 Answer | 
                Answer This Question

                Hi Roger, the thermostat does not make a clicking sound under normal operations unless it starts or ends the call for heat/cool. We will be happy to verify that your thermostat is working as intended. You can contact our team at (800) 633-3991. - Maria

                By|Sep 29, 2026


                  Viewing 1-8 of 88

                  Customer Reviews

                  4.3 out of 5

                  • 4.3 out of 321 reviews
                  • 29% recommend this product
                  Filter by:
                  Showing 1-10 of 321 reviews
                  Price is good..but my position on all programmable thermostat is that there overly to complicated to program. Booklet has 20 pages
                  by
                  Response from Resideo TeamSep 14, 2026
                  Hi BASHIR, thank you for your review. We will be happy to guide you through the thermostat setup and program. Feel free to contact our tech support team at (800) 633-3991. - Maria resideo
                  • Verified Purchase
                  1 found this review helpful
                  The Honeywell X2P single stage programmable thermostat (RTH20B) was easy to install. It replaced my old Honeywell single stage thermostat without any issue. The new thermostat looks nice and in good quality.
                  by
                  I installed the Honeywell X2P programmable thermostat one month ago. I have been very pleased with this devices ease of operation. The comfort level in my home is much better with this new thermostat. I highly recommend this programable!
                  by
                  This will destroy your compressor over time.
                  Returned. Honeywell apparently decided that an “advanced algorithm” is better than letting the customer set a normal cooling swing/deadband. It is not. My previous thermostat allowed my single-stage A/C to run sensible, longer cycles. This one shuts cooling off as soon as the displayed temperature hits the setpoint, then starts nudging the system again near target temperature. That is not precision comfort; it is unnecessary compressor cycling dressed up as smart control. The installer setup menu does not offer the setting I actually need: cooling differential, swing, deadband, or compressor cycle-rate. Smart Response was off. Wiring was correct. The A/C itself ran normally with the old thermostat. The only thing that changed was this thermostat. I assume this behavior is designed for people who complain when the display says 74 while the setpoint is 73. Personally, I would rather have a thermostat that protects my equipment with longer, saner cooling cycles instead of obsessively trimming the temperature like it is controlling a variable-speed inverter system. For a conventional single-stage A/C, I would avoid this model. Buy something that gives you real control over cycling behavior. Calibration of the display temperature is sorely missing. Mine was off by a full 3 degrees with no way to correct it. I will never install a Honeywell Home thermostat again. Not even if it's free.
                  by
                  Response from Resideo TeamJul 1, 2026
                  Hello, and thank you for taking the time to share such detailed feedback. We truly hear your concerns about system cycling and temperature control, and we understand how important consistent performance is for your comfort and equipment. Your insights are incredibly valuable to us as we continuously work to improve our products and customer experience. If you ever need assistance or would like to discuss this further, please don’t hesitate to contact us at 1-800-468-1502 — we’ll be more than happy to help.— Charlie resideo
                    1 found this review helpful
                    This thermostat works great for a middle priced unit. Has good features in the program schedule settings 4 separate settings. The other feature to which I really like is the Smart Response Feature. Allows the thermostat to learn how long the furnace and air conditioner take to reach the programed setting. So the temperature is reached at the time that you set. Then a display will show Active Recovery. I haven't totally programed it quite yet but like that you also can bypass or override permanent scheduled settings at a touch of the button. Totally meets my expectations and great unit for the price!
                    by
                    • Verified Purchase
                    Needed to replace a Honeywell that was 30 years old and finally died due to battery corrosion on the terminals that could no longer be cleaned. Decided to stay with Honeywell as had good experience with the prior thermostat and two other non-programmable units. This was so easy to install and set up. Directions for how to connect the wires was so simple. Actually took 10 minutes to rewire the base, and about 20 minutes to program the unit. Very satisfied.
                    by
                    • Verified Purchase
                    1 found this review helpful
                    Functions well, meet all my expectations and was simple to set up. There is a loud click as the unit triggers the a/c on or off. Overall, a good thermostat.
                    by
                    1 found this review helpful
                    Great features, good price and easy to install and set up.
                    Looked at several different models, settled on this one and very glad I did. Easy to install, instructions are clear and straightforward. Easy to program or change settings. Compatible with a wide variety of heating and other systems. Interface was easy to use. Needed to confirm something in the old thermostat this replaced and the phone support was very helpful as well. Great product, great support = very satisfied customer! Picture shows thermostat inside a "StatGuardPlus" cover also from HD.
                    by
                      • Recommended
                      1 found this review helpful
                      This customer chose to rate the product and not provide text.
                      by
                      Easy to put on. Figureoutable 3 weeks?
                      by
                      Showing 1-10 of 321 reviews

                      Compare Key Features

                      current item

                      Product Snapshot

                      Great for homeowners looking for personalized comfort, making temperature control easier and more efficient. This programmable thermostat offers customized scheduling and filter change reminders.
                      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 a programmable thermostat, making temperature control easier. This thermostat offers flexible programming options and a user-friendly backlit display.

                      Smartphone App Control

                      Learning Capability

                      Energy-Saving Features

                      Voice Control

                      Geofencing