Search  for anything...
Honeywell

Honeywell Home RTH221B1039 1-Week Programmable Thermostat

  • Based on 6,976 reviews
Condition: New
Checking for product changes
$15.98 Why this price?
Save $11.01 was $26.99

Buy Now, Pay Later

As low as $3 / mo
  • – 4-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

30-day refund/replacement

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: In Stock.
Fulfilled by Amazon
Arrives Friday, May 16
Order within 1 hour and 3 minutes
Available payment plans shown during checkout

Recently Viewed

Style: Thermostat


Features

  • Plastic
  • Imported
  • ONE WEEK PROGRAMMING: Set one identical program for the entire week with four program periods per day including wake, leave, arrive and sleep.
  • PRECISE TEMPERATURE CONTROL: Precise temperature control of plus/- 1 degree Fahrenheit
  • DIGITAL DISPLAY: Easy-to-read digital display with an intuitive interface for one-touch access to setpoint temperature
  • EASY INSTALLATION: Easy to install yourself and basic operation keeps programming simple
  • REMINDERS: Built-in battery change reminders (2 AAA batteries are required for operation)
  • SET POINT RETENTION: Set point is retained in memory in the event of a power outage
  • DISPLAY OPTIONS: Fahrenheit or Celsius; 12 or 24 hour clock. Note: This thermostat is not backlit.
  • OVERRIDE OPTIONS: Permanent and temporary override capability
  • COMPATIBLE WITH: Heating, cooling and heat pumps without auxiliary heat options
  • Does NOT work with electric baseboard heat (120-240 V), heat pumps with backup, or multi-stage heating/cooling. For indoor use only.

Description

This easy-to-operate 1-Week Programmable Thermostat helps make your home comfortable exactly when you want it. Programmable for one week, it lets you customize your schedule with four options – ‘wake’, ‘leave’, ‘return’, and ‘sleep’ – for precise temperature control and added comfort. Simple step-by-step instructions included with the thermostat make DIY installation easy. From the Manufacturer A Honeywell programmable thermostat can save you significant money off your energy bill. You set it up to adjust the temperature when you are away or asleep---times when you don’t necessarily need to heat or cool your home to optimum comfort---and your heating and cooling equipment runs less. This one-piece thermostat has one easy program for all days of the week (4 periods - wake, leave, return, sleep). Simple and effective use and performance.

Brand: Honeywell Home


Model Name: RTH221B


Product Dimensions: 1"D x 4.75"W x 3.5"H


Controller Type: Hand Control


Special Feature: Low Battery Indicator, Clock Display, Low Voltage, Programmable


Brand: ‎Honeywell Home


Model Name: ‎RTH221B


Product Dimensions: ‎1"D x 4.75"W x 3.5"H


Controller Type: ‎Hand Control


Special Feature: ‎Low Battery Indicator, Clock Display, Low Voltage, Programmable


Color: ‎White


Specific Uses For Product: ‎Air Conditioner, Furnace


Temperature Control Type: ‎Heating and Cooling


Connectivity Technology: ‎Non-connected


Included Components: ‎User Manual, Thermostat, Mounting Hardware


Power Source: ‎Battery Powered


Voltage: ‎24 Volts


Material: ‎Plastic


Shape: ‎Rectangular


Display Type: ‎LCD


Finish Type: ‎White


Control Method: ‎Touch


Mounting Type: ‎Wall Mount


Style: ‎Thermostat


Backlight: ‎Yes


Specification Met: ‎energy


Number of Batteries: ‎2 AA batteries required.


UPC: ‎085267348553


Global Trade Identification Number: ‎53


Manufacturer: ‎Honeywell Home


Control Type: ‎Button Control


Part Number: ‎RTH221B


Item Weight: ‎10.5 ounces


Country of Origin: ‎Mexico


Item model number: ‎RTH221B1039


Batteries: ‎2 AA batteries required.


Is Discontinued By Manufacturer: ‎No


Size: ‎3.5H x 4.75W x 1D (in.)


Finish: ‎White


Pattern: ‎Thermostat


Item Package Quantity: ‎1


Cutting Diameter: ‎1.1 Inches


Special Features: ‎Low Battery Indicator, Clock Display, Low Voltage, Programmable


Batteries Included?: ‎No


Batteries Required?: ‎Yes


Battery Cell Type: ‎Alkaline


Warranty Description: ‎1 year limited.


Assembled Diameter: ‎1.1 Inches


Date First Available: August 17, 2005


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, May 16

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • gets the job done-zo
Style: Thermostat
The Honeywell Home RTH221B1039 1-Week Programmable Thermostat is a reliable and user-friendly device that enhances control over home heating and cooling systems. One of the standout features of this thermostat is its programmability. It allows users to set different temperature schedules for weekdays and weekends, optimizing comfort while potentially saving energy costs. This flexibility is ideal for households with varying routines, as it ensures the home is efficiently heated or cooled based on occupancy. Installation of the RTH221B1039 is straightforward, making it accessible even for those without extensive technical knowledge. The clear and intuitive interface guides users through setup and programming, ensuring hassle-free operation from the start. The thermostat's compact design blends seamlessly into any home décor, with a sleek and modern appearance that complements different interior styles. The large, easy-to-read display provides clear visibility of the current temperature and settings, enhancing user convenience. I appreciate the energy-saving benefits of this thermostat. By automatically adjusting temperatures based on programmed schedules, it helps reduce energy consumption and utility bills without sacrificing comfort. While the RTH221B1039 excels in simplicity and functionality, it may not offer advanced features like Wi-Fi connectivity or smartphone app control. However, for users seeking a reliable programmable thermostat without the complexity of smart home integration, this model is an excellent choice. Overall, the Honeywell Home RTH221B1039 1-Week Programmable Thermostat is a dependable solution for enhancing comfort and efficiency in home heating and cooling. Its user-friendly design, programmable scheduling, and energy-saving features make it a practical investment for any household looking to optimize climate control while reducing energy costs. ... show more
Reviewed in the United States on July 10, 2024 by Syd M
    • Does the job
Style: Thermostat
Pretty straightforward. Depending on the type of Heat and/or AC that you have will depend on how you wire it. The instructions in the box give you the needed info to wire it to the proper style as well as program it as needed. As long as you read the instructions as you install it, you'll be fine. There are a few styles of system that it will NOT work with, but those systems are listed in the item description, so make sure you read before purchasing..... I have a heat only 24VAC baseboard water heat system and a 2 wire connection and it works perfectly fine. Again, as long as you confirm your system is compatible prior to purchasing and then read the instructions BEFORE miswiring something, you'll be fine. The programming options are a 7 day schedule, so you can not set something different for weekday vs. weekend. It will have to be the same for all 7 days, though you can temporarily or permanently override the programming as needed. You can set 4 different programming slots in a given day; wake up time, leave house time, return home time, and sleep time. I've had it installed for a few days now and it's very straight forward. For the price you can't beat it. ... show more
Reviewed in the United States on November 22, 2024 by Reviewer
    • Simple But Effective
Style: Thermostat
Wanted simple. That's what I got. Works like a charm. Easy install. However, set up instructions overly comlex and poorly worded. Most people just want their heater,ac to come on at a certain temperature. That's it. Insructions unclear on this point. Instead, the instrctions go on and on about programing your thermostat. All well and good, but first take care of the basics. ... show more
Reviewed in the United States on December 7, 2024 by Jrush
    • Time to upgrade thermostat
Style: Thermostat
Review Image by Roger W. Roger W.
Winter is here and I finally got tired of every night turning down the thermostat to our oil burner furnace. And then in the morning, turning the heat back up. I had one of those old round mercury filled thermostats and decided to get the Honeywell Home RTH221B1039 1-Week Programmable Thermostat. I didn’t need anything fancy and only had two wires to hook up. Easy install and easy to program. I just use it for heating but it can be set up for simple a/c function other times of the year. Good deal if you only need the basics. p.s. Dispose of the old thermostat appropriately at your local hazardous material facility as it has mercury in it. ... show more
Reviewed in the United States on December 21, 2024 by Roger W. Roger W.
    • Excellent product.
Style: Thermostat
Old thermostat stopped working. I received the replacement unit in three days. While the defective unit is also Honeywell it is an earlier model. I removed the faceplate on the defective unit and did the same with the new one. I checked to verify the old and new models were wired the same and they were so I didn't remove the wall plate on the old unit but rather snapped the new faceplate on it and it works perfectly. ... show more
Reviewed in the United States on April 16, 2025 by R.D.
    • Slow to react to temperature changes
Style: Thermostat
Pro's.... Nice thermostat, simple operation, gets the job done. Con's.... Very slow to react to actual room temperature changes. This can lead to heating well above the set temperature in rooms that are quick and easy to heat. I used two mechanical thermostats to monitor actual room temps along side the new unit. I set the temp on the thermostat to 65F... the room temp dropped to 62F before the thermostat finally registered 64F and kicked on the heat. After which the room reached an actual temperature of 72F before the thermostat caught up and read 65F again and shut down. This is not a swing temp issue, this is s simple case of a slow reacting thermostat. Very poor performance in that area. ... show more
Reviewed in the United States on November 2, 2024 by Mike
    • What you see is what you get
Style: Thermostat
It's simple, cheap, easy to install, and gets the job done. There's no backlight, so it can be hard to see if it's dark, and you can't give it separate programming for weekdays versus weekends, but if you just need single stage heating or cooling on a budget, this one works great.
Reviewed in the United States on October 30, 2024 by Tylor

Can't find a product?

Find it on Amazon first, then paste the link below.