Honeywell RTH221B 1 Week Programmable Thermostat

RTH221B 1 Week Programmable Thermostat

By Honeywell

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$29.98 In Stock

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Description & Features+

Honeywell RTH221B1047 1 Week Programmable Thermostat

  • Compatible with conventional heating and cooling systems, millivolt systems and heat pumps without auxiliary heat

  • 1 week programming (one program for the entire week - 4 periods per day)

  • Digital display

  • Accurate temperature control of +/- 0.5°C

  • Permanent and temporary override capability

  • Set point is retained in memory in the event of a power outage

  • Fahrenheit or Celsius temperature display

  • Battery change reminder

  • 12 or 24 hour clock

  • Soft-touch keys

  • Easy operation

  • Easy to install

  • Dimensions: 3.375 x 4.625 x 1.125 inches


Available for Shipping to Canada Post
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Return Policy+

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You can return this item within 90 days from the day you receive your online order.

You can easily return this item by mail.

From the Manufacturer +

Ratings & Reviews+

Honeywell RTH221B 1 Week Programmable Thermostat is rated 4.2 out of 5 by 45.
Rated 4 out of 5 by from Cheap and Effective Works well. Easy to Install. Easy to program. Not the most advanced options for weekdays and weekends, but very easy to use and gets the job done.
Date published: 2010-11-08
Rated 5 out of 5 by from Value for Money This product exactly does what is expected. The installation is easy and pretty quick. I would highly recommend it.
Date published: 2010-12-31
Rated 5 out of 5 by from Easy to Install, Easy to Use, Nice Price I ordered this online because it was nearly $8 more in the store! I had to wait a week and a half to get it but it was worth the savings. Easy to install, easy to use. I thought my old thermostat was running up our electric bill due to the temperature gauge being wrong. I was right! My a/c runs a lot less with the new thermostat. Can't wait to see to see next month's electric bill!
Date published: 2012-10-17
Rated 5 out of 5 by from Simply excellent! I easily installed this thermostat at my cottage, in the living/dining area, which is warmed by 3 electric baseboard heaters. I found they were all linked, in the basement, to a voltage reducer which turned 240 volts into 24 volts. From this device, 2 thin wires (red and white) connected to the old manual thermostat. It was a simple matter to remove this thermostat and then connect the low voltage wires to the new Honeywell RTH221 terminals, marked R and W. Programming the new thermostat was also very simple since I only had to enter the time and temperature for wakeup and sleep and those settings were extended to every day of the week. I love getting up in the morning to an already-warmed up house, and not having to remember in the evening to turn down the thermostat before bed time. This inexpensive thermostat delivers everything Honeywell promises and is the perfect choice for anyone who doesn't care about different temperature settings for weekdays vs. weekends.
Date published: 2016-04-29
Rated 5 out of 5 by from Good Value in a basic White vertical thermostat Wanted a basic digital thermostat to replace my existing original analog unit which still worked, but was ugly and the old mercury bulb was difficult to read. Needed a vertical unit to fit over existing wall hole but all the ones stocked in stores were horizontal. Found this on-line and shipped-to-store, took about 5 days. Walmart sent me email telling me when it arrived at store. Picked it up and installed it myself using directions and it's been doing the job. I don't need a lot of programmability, just a basic box in white with an easy to read digital display and this one meets those requirements at a good price (<$25)
Date published: 2013-11-04
Rated 4 out of 5 by from Good replacement for old verticle mount thermostat Good unit, works well. Only drawback is incomplete wiring diagram. Does not address a very simple, heat only, system. If the terminal call out in the install booklet was better, one would not have to research the proper connections on line.
Date published: 2013-12-09
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