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Honeywell Home RTH221B1021 Programmable Thermostat, 1 Week / 4 Time Periods Per Day, Accurate to +/- 1Degree

4.3 4.3 out of 5 stars 4,221 ratings

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Purchase options and add-ons

Brand Honeywell
Model Name RTH221B1021
Controller Type Push Button
Special Feature Temperature Display, Programmable
Color Off White

About this item

  • One program for the entire week-4 periods per day.
  • Digital display
  • Compatible with heating, cooling and heat pumps without auxiliary heat, Does not work with electric baseboard heat (120-240V) multistage HVAC systems
  • Accurate temperature control of plus/-1-Degree F for consistent comfort
  • Display options: Fahrenheit or Celsius temperature display, 12 or 24 hour clock
See more product details

Customer ratings by feature

Easy to install
4.4 4.4
Instruction quality
4.0 4.0
Tech Support
3.9 3.9
Touch Screen
3.8 3.8

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From the manufacturer

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Description

The Honeywell RTH221B Basic 1 Week Programmable Thermostat is a simplified and easy to use 1-week programmable thermostat. This one-piece thermostat has one hassle-free program for every day of the week. The additional bonus of choosing between 4 preset options such as wake, leave, return and sleep add versatility to an already flexible thermostat. The RTH221B utilizes a crystal clear digital display that allows for precise temperature control. This thermostat is compatible with heating, cooling and heat pumps without auxiliary heat options.

Features:

  • Simply Programming - one program for the entire week, up to 4 periods per day.
  • Precise temperature control of +/-1 Degree Fahrenheit for consistent comfort.
  • Easy to read digital display - Fahrenheit or Celsius temperature, 12 or 24 hour clock.
  • Compatible with heating, cooling and heat pump without auxiliary heat.
  • Does not work with electric baseboard heat (120-240V) multistage HVAC systems.

Product Dimensions

  • (WxDxH): 3.38 x 1.11 x 4.75 in.

Product information

Technical Details

Additional Information

Warranty & Support

Amazon.com Return Policy:Amazon.com Voluntary 30-Day Return Guarantee: You can return many items you have purchased within 30 days following delivery of the item to you. Our Voluntary 30-Day Return Guarantee does not affect your legal right of withdrawal in any way. You can find out more about the exceptions and conditions here.
Product Warranty: For warranty information about this product, please click here. [PDF ]

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Honeywell

Honeywell Home RTH221B1021 Programmable Thermostat, 1 Week / 4 Time Periods Per Day, Accurate to +/- 1Degree


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Product Description

A simple, easy to use 1-week programmable thermostat. 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 HVAC equipment runs less. Plus, your heating or cooling comes back to the comfort level you desire before you come home or wake up. Honeywell Home programmable thermostats are easy to install and are pre-programmed for your convenience. For more than a century, Honeywell Home thermostats have been the popular choice of homeowners. This thermostat is compatible with single-stage heating/cooling systems, heating, cooling, heat pumps without backup heat, mill volt, pellet stoves and fireplaces. It does NOT work with electric baseboard heat (120-240 V), heat pump systems with backup heat or multi-stage heating/cooling.

Product guides and documents

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This Item
Honeywell Home RTH221B1021 Programmable Thermostat, 1 Week / 4 Time Periods Per Day, Accurate to +/- 1Degree
Honeywell Home RTH221B1021 Programmable Thermostat, 1 Week / 4 Time Periods Per Day, Accurate to +/- 1Degree
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Price$33.57$21.45-13% $29.96
List:$34.45
$38.00$28.99
Delivery
Get it as soon as Wednesday, Apr 3
Get it as soon as Wednesday, Apr 3
Get it Apr 2 - 5
Get it as soon as Wednesday, Apr 3
Get it as soon as Wednesday, Apr 3
Customer Ratings
Easy to install
4.4
4.3
4.8
4.4
Tech Support
3.9
3.5
3.8
Temperature Control
4.4
4.4
4.6
Sold By
Gold Label LLC
Amazon.com
TrueValueSuperStore
DealsDailyUS
Suuwer
control method
touch
remote
remote
power source
Corded Electric
Ac/dc
Battery Powered
controller type
Push Button
Hand Control
Hand Control
Push Button
material
Plastic
Plastic
Plastic
Plastic
shape
Rectangular
Rectangular
Curved
Rectangular
mounting type
Wall Mount
5-2 Day Programmable Thermostat Operating Manual Model: RTH2300 English,Spanish
Wall Mount
has backlight
weight
7.2 ounces
0.45 pounds
0.5 pounds
0.52 pounds

Important information

Bulb Voltage

120240 volts

Customer reviews

4.3 out of 5 stars
4.3 out of 5
4,221 global ratings

Customers say

Customers like the performance, ease of installation, and value of the hvac control thermostat. They mention that it works perfectly, the controls are very intuitive, and it saves them money. That said, opinions are mixed on quality, temperature, and weekend settings.

AI-generated from the text of customer reviews

538 customers mention429 positive109 negative

Customers like the performance of the HVAC control thermostat. For example, they mention it works great, runs perfectly, and is easy to install and program. Some say it works perfectly for apartments, condos, small stores, or other places where the temperature is often cold.

"I’ve used these with hot water baseboard heating and they work just fine. Not for use with electric baseboard heating as I found out" Read more

"...finished installing the new Honeywell and it was SOOO EASY and it works like a charm. Their connections only had two wires, white and red...." Read more

"...It runs perfectly, it’s easy to install and program. I gave it five stars because it is a very good product for its price...." Read more

"...That was the other reason I gave it 3 stars.It works great so far, no issues. Will update in a month of this thing running for awhile." Read more

473 customers mention426 positive47 negative

Customers find the installation process of the HVAC control thermostat to be easy. They mention that the product is easy to install and program, connect, and use. They also appreciate the intuitive controls and the simple hookup. Customers also mention that it's easy to uninstall.

"...I got in two days, and the hookup was easy. Easy yo. I'm talking so easy, I thought about taking it for a drink and a meal...." Read more

"...It is simple to use with 15 minute increments.Installation says "15 minutes or under" and I found this to be true...." Read more

"...I just finished installing the new Honeywell and it was SOOO EASY and it works like a charm. Their connections only had two wires, white and red...." Read more

"...It runs perfectly, it’s easy to install and program. I gave it five stars because it is a very good product for its price...." Read more

218 customers mention199 positive19 negative

Customers are satisfied with the value of the thermostat. They mention that it works well for the money, is easy to install, and has good instructions. Some say that it has helped them decrease their electric and gas bill.

"...Pros: cheap, easy to install, good instructions..." Read more

"...I gave it five stars because it is a very good product for its price...." Read more

"...it is easy to use (with a magnifying glass), easy to install, and inexpensive." Read more

"...This one has a nice digital readout. Great product for the money." Read more

217 customers mention113 positive104 negative

Customers are mixed about the quality of the thermostat. Some mention it's a great, no-frills 7-day programmable thermostat with simple settings. However, others say that it'll only program 4 periods of one day and that it doesn't allow different settings for different days.

"...2. Basic use makes ti fun for all ages!3. Basic programming is available, but nothing that is 3 pointer at the buzzer wow4...." Read more

"...They worked but were hard to adjust precisely. Thus, I purchased two of these for a DIY installation...." Read more

"...The RTH221B shows the current temperature and can be set to adjust the temperature when you wake, leave, return and night...." Read more

"...and have been unable to successfully program 65 degrees F for all but nighttime (60 degrees then)...." Read more

96 customers mention64 positive32 negative

Customers are mixed about the temperature of the thermostat. Some mention that it keeps the set temperature perfectly, and does a much better job of regulating the heat in their house. However, others say that the exact temperature was difficult to discern, and it does not show the set point temperature unless you press the set or up button. Additionally, some complain that the thermostat is not backlit, and that they cannot set a daily different temperature.

"...I came home last night and the apt was a comfortable 68 degrees. It doesn't go on in the middle of the night, waking me up, b/c it's preset at 62...." Read more

"...to get precise control with that thermostat as the exact temperature was difficult to discern...." Read more

"...The heat is more consistent throughout the house with the Honeywell Programmable Thermostats." Read more

"...These Honeywell RTH221B1021/A thermostats seem to do a much better job of regulating the heat in our house than the ones they replaced...." Read more

58 customers mention19 positive39 negative

Customers are mixed about the weekend settings of the HVAC control thermostat. Some mention that it was a breeze to setup and set a weekly schedule, while others say that it can only program a daily schedule.

"...don’t get this one, because it does not light up, and it is not “one week” programmable, it’s one day, and repeats all week...." Read more

"...Since I'm retired I like that this one can be programed for all 7 days of the week without a separate program for weekends...." Read more

"...It is NOT "1 week programmable". It is ONE DAY. Having read the reviews I wasn't fooled...." Read more

"...There are four different times that you can set. You cannot set a time for each day.... meaning, I would prefer to keep the temperature a little..." Read more

87 customers mention10 positive77 negative

Customers are dissatisfied with the backlighting of the HVAC control thermostat. They mention that it does not have an illuminated display, making it hard to see.

"...Only thing is that I don’t like is that there is no light. No big deal, but it is annoying sometimes because my light switch is way across the room...." Read more

"...unless you press the set or up or down buttons, it does not have a backlit screen, so you can't see it in a dark room...." Read more

"...be fooled like me, the display does not light up, in other words no back light. Makes it very difficult to see in the dark hallway...." Read more

"...The only gripes I have with it are that the screen is not backlit and there was no option to hardwire it, meaning you have to use batteries for it...." Read more

43 customers mention0 positive43 negative

Customers are dissatisfied with the screen blanking of the HVAC control thermostat. For example, they mention that it doesn't light up, the back light was not working, and the display is not back left. That said, some say that the unit doesn''t kick on/off as it reaches the target, and that it never activates the heat pump.

"...One of them said don’t get this one, because it does not light up, and it is not “one week” programmable, it’s one day, and repeats all week...." Read more

"...This was perfect. The only drawback is that it does not light up, even when adjusting." Read more

"...But.....there is always a but....don't be fooled like me, the display does not light up, in other words no back light...." Read more

"...I do miss the fact that this does NOT light up, but it's not that big of a deal, and I'd rather have less "components" to break." Read more

I have put in quite a few of these easy to use programmable thermostats
4 Stars
I have put in quite a few of these easy to use programmable thermostats
I have put in quite a few of these easy to use programmable thermostats. They work great despite the fact that they are super inexpensive. For a renter, like me, the ability to set my thermostat saves me big time on my utility bill. And at this price-I don’t feel bad about just leaving it in when I move. Yes-you can thank me if you are the renter after me!Unfortunately, this one is as sort of a dud. The tiny screw in which you I sent your “hot” wire under would not budge and appeared to be stripped or defective. I wasn’t able to get the wire under it and inserted. Luckily I have an electrician friend who helped me get it in there. I would have just sent it back but the temp is dropping and I am stubborn about that kind of thing.All-in-all, great little thermostat. Would have rated a 5 but i just happened to get one that was less than the awesome products I usually get from Honeywell.By the way-check with your utilities company. My offered a rebate since I was putting in a programmable unit.
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Top reviews from the United States

Reviewed in the United States on December 22, 2014
12 people found this helpful
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Reviewed in the United States on March 17, 2013
218 people found this helpful
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Reviewed in the United States on March 21, 2024
Reviewed in the United States on January 23, 2014
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Top reviews from other countries

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Sisi
5.0 out of 5 stars Much more accurate reading and temperature control now!
Reviewed in Canada on December 10, 2019
2 people found this helpful
Report
rodolfo figueroa
5.0 out of 5 stars exelete precio
Reviewed in Mexico on October 11, 2018
Phoebe Buffay
5.0 out of 5 stars Set it and forget it
Reviewed in Canada on October 26, 2019
AMZN
4.0 out of 5 stars Funcional
Reviewed in Mexico on January 28, 2019
One person found this helpful
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Quaydvt
4.0 out of 5 stars Easy to program, works well, Fahrenheit only.
Reviewed in Canada on December 22, 2018
7 people found this helpful
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