Model # RTH221B

Internet #203539508

Store SKU #805478

Honeywell 7-Day Programmable Thermostat
0085267348553

Honeywell

7-Day Programmable Thermostat

  • Simple programming for the entire week, up to 4 periods per day
  • Easy to read digital display
$1949 /each

Frequently Bought Together

Product Overview

The Honeywell 1-Week Programmable Thermostat has a simple interface and offers one basic program for the entire week with 4 program periods. It automatically adjusts the heating or cooling of your home so you are comfortable when you wake up, come home or at any other time you prefer.

Info & Guides

You will need Adobe® Acrobat® Reader to view PDF documents.  Download a free copy from the Adobe Web site.

Customers Also Compared These

Price
$19.49 /each
$19.97 /each
$22.00 /each
$34.98 /each
Name 7-Day Programmable Thermostat 7-Day Manual or Programmable Thermostat 5-2 Day Programmable Thermostat with Backlight 5-1-1 Day Programmable Thermostat with Backlight
Brand Honeywell Lux Honeywell Honeywell
Ratings (142) (12) (355) (75)
Thermostat Program Type 7 - Day 7 - Day 5 - 2 Day 5 - 1 - 1 Day
Features Battery Operated,Low Battery Indicator Backlit Display,Battery Operated,Lockable Backlit Display,Battery Operated,Filter Monitor,Low Battery Indicator Backlit Display,Battery Operated,Filter Monitor,Low Battery Indicator
Color Family Whites Whites Whites Whites
View Product View Product View Product View Product

Specifications

Dimensions

Details

Warranty / Certifications

More Products With These Features

Search

Customer Questions & Answers

Why can't this be used with baseboard heaters?

Asked by: MacG
WARNING!! IGNORE EVERONE WHO JUST BLITHELY SAYS "IT WORKS"! It's not that simple, and it could be very dangerous if you do the wrong thing. I have an EE degree, and HarryJ below got it right. You need a transformer to convert line voltage to 24V and a relay in order to use a low-voltage thermostat with baseboards. Furnaces have such devices built-in. Fortunately, you don't have to build your own. Such a device is commercially available. It's called something like a "Level Temp Silent Operator", and it mounts directly in a knockout in a junction box in which you bring the line from the service panel and the line to supply the baseboards. Look up 24A01G-3. Such a device is available on this website under "Thermostat Accessories". They are also available at just about any local electrical supply house. I have hydronic baseboards, and my previous operator just failed after 35 years of flawless service. Because it is likely that you will replace your thermostat a few times over the course of many years, I believe it is a significant safety feature to NOT have a line voltage line feeding the thermostat.
Answered by: EdwardS
Date published: 2017-02-14

furnace oil heating

I have forced hot water heat only and burn oil and i am looking to save 20% on buying oil what ius the best progmable thermostate avaiable?
Asked by: David
Our forced hot water is fueled by natural gas and this works just great. Program it and forget it.
Answered by: bjih
Date published: 2015-11-08

purpose of battery

Is the battery actually used for back-up or just used for background lighting?
Asked by: Butch
Back up for power outages to keep your settings.
Answered by: Jeremy
Date published: 2017-03-28

how long do the batteries last?

This thermostat does not connect to 24V. How long will the batteries last?
Asked by: HVAC
A year... change mine with the CO2 and Fire Detectors
Answered by: Jeremy
Date published: 2017-03-28
  • y_2017, m_6, d_23, h_15CST
  • bvseo_bulk, prod_bvqa, vn_bulk_1.0.0-hotfix-1
  • cp_1, bvpage1
  • co_hasquestionsanswers, tq_35
  • loc_, sid_203539508, prod, sort_[SortEntry(order=NUM_ANSWERS, direction=DESCENDING), SortEntry(order=SUBMISSION_TIME, direction=DESCENDING), SortEntry(order=LAST_APPROVED_ANSWER_SUBMISSION_TIME, direction=DESCENDING), SortEntry(order=LAST_APPROVED_ANSWER_SUBMISSION_TIME, direction=DESCENDING), SortEntry(order=BEST_ANSWER_FEEDBACK_COUNT, direction=DESCENDING), SortEntry(order=POSITIVE_ANSWER_FEEDBACK_COUNT, direction=DESCENDING), SortEntry(order=NUM_ANSWERS, direction=DESCENDING)]
  • clientName_homedepot
  • bvseo_sdk, java_sdk, bvseo-3.1.1
  • CLOUD, getContent, 15ms
  • QUESTIONS, PRODUCT

Customer Reviews

7-Day Programmable Thermostat is rated 3.6 out of 5 by 142.
Rated 1 out of 5 by from Worked great for a little over a year. Now it calls for heat at random times. My wake time is s... Worked great for a little over a year. Now it calls for heat at random times. My wake time is set for 7.30 am and 67. I have been woken up all week between 3 and 6 am with the heat on. The thermostat says it is in the wake mode. UGH. It is also heating beyond the programmed temp. Currently my house is 73 but the thermostat is set to 67. I called Honeywell and since it is over a year old it is out of warranty and I need to buy a new one. If it matters I have used this with an oil fired boiler. And I have changed the batteries twice in the last 3 weeks hoping this would fix the issue. But it is a flaw in the thermostat.
Date published: 2017-01-13
Rated 5 out of 5 by from Easy to replace old unit, looks clean. 4 temperature settings/day, the same 4 settings each day, ... Easy to replace old unit, looks clean. 4 temperature settings/day, the same 4 settings each day, simple. My routine is simple & the same everyday, I just have to program 1 day rather than 7 days, or 5+1+1 etc. One thing I miss on the old thermostat, this thermostat only shows the temperature in the room, not what it is currently set at in the program.
Date published: 2017-01-04
Rated 5 out of 5 by from Honey Well programmable thermostat We were having issues with our previous thermostat not making contact to keep our heat going. After installing this Honeywell Thermostat heat control is no longer a concern.
Date published: 2016-12-27
Rated 4 out of 5 by from Did what I needed without having to use my smart phone. Imagine that Did what I needed without having to use my smart phone. Imagine that
Date published: 2017-01-11
Rated 4 out of 5 by from The thermostat is easy to install. Following the instructions on programing was easy also. The... The thermostat is easy to install. Following the instructions on programing was easy also. The furnace worked fine and cycled properly the first day. Now it stays on and when it gets too warm we turn power off.
Date published: 2017-03-25
Rated 4 out of 5 by from I had bought the same one before, just popped the cover onto the existing back and it started wor... I had bought the same one before, just popped the cover onto the existing back and it started working immediately. Easy to program
Date published: 2017-01-17
Rated 3 out of 5 by from Only been installed a week. It seems fine. I do wish they would write on the box that it's doesn'... Only been installed a week. It seems fine. I do wish they would write on the box that it's doesn't have a lighted face!
Date published: 2017-03-28
Rated 3 out of 5 by from Honeywell Programable Thermostat Instructions didn't say where to hook up existing wires Followed instructions but furnace STILL doesn't cycle properly
Date published: 2017-03-14
  • y_2017, m_6, d_23, h_3
  • bvseo_bulk, prod_bvrr, vn_bulk_1.0.0-hotfix-1
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_142
  • loc_, sid_203539508, prod, sort_[SortEntry(order=RELEVANCE, direction=DESCENDING)]
  • clientName_homedepot
  • bvseo_sdk, java_sdk, bvseo-3.1.1
  • CLOUD, getContent, 26ms
  • REVIEWS, PRODUCT