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Tools & Home Improvement > Building Supplies > HVAC > Thermostats & Accessories > Thermostats > Programmable > B0088A5X5G
  1. Honeywell RTH221B1021/A 1 Week Programmable Thermostat
    Image(s) provided for illustrative purposes and may differ from the actual product
  2. Honeywell RTH221B1021/A 1 Week Programmable Thermostat

    Delivery: 10-20 Working Days
    Customer Ratings (235 reviews)
    Price R612.00

Product Options

This item may be available in a different size, colour, scent, version or platform. Click below to be directed to product options:

Product Description

  • 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 +/-1-Degree F for consistent comfort
  • Display options: Fahrenheit or Celsius temperature display, 12 or 24 hour clock
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Honeywell International
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Comes with Manufacturer Warranty.
Most Helpful Customer Reviews

I wanted a simple to install thermostat to replace the aging, mercury switched Honeywell items that control our heat and cooling. After researching I decided that a simple weekly timer is good enough, and certainly better that what we had originally. The RTH221B shows the current temperature and can be set to adjust the temperature when you wake, leave, return and night. It is simple to use with 15 minute increments.

Installation says "15 minutes or under" and I found this to be true.

To install:

Turn off power to furnace and thermostat (although it is a low voltage feed, you MUST still do this)
Unscrew the original thermostat from the wall but leave wires attached
Check the color of the wires and which terminals they attach to on the original (look for small letters W,R,Y,Rc etc)
Mark the wires (if needed) with the stickers provided in the package
Unhook wires from the original
Remove backing plate from new... Read more
Being retired, and having an old failed Honeywell 5/2 day thermostat, we replaced it with this 7-day model for heating only. It was simple enough to replace. The twin wiring was identical and so were the wall mounting hole centers. The directions for set-up were fairly clear. My one beef is that the new thermostat lacks back lighting which the old one had. The letters are small enough where one needs a flashlight during setup, requiring three hands at times, and is awkward for those of us with just two hands. Omitting the back light is inexcusable since the 5/2 twin RTH2300 DOES have back lighting. Another caution is that you need a tiny screwdriver to turn the wire set screws. I happen to have one but I would guess few people do.
It works exactly like it should. Keep in mind that it is a ONE week program. 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 cooler on the weekends while I sleep in but you can not set a daily different temperature. I still love it and will keep it. I just have to make sure that before I go to bed on a day that I can sleep in, I have to set the temperature to what I want and then push "hold". If that doesn't bother you, then I would totally get this. I have saved so much money by keeping the temp higher while I'm at work and I have it set to get colder an hour before I get home.
Please Note

The authorised South African distributor of this product is under no obligation to honour the manufacture's guarantees/warranties or to provide after-sales service.

Please note that this item is imported from the USA, and is designed to be used in the USA. In addition, if the unit is powered it will come with a US plug and an adapter/transformer may be required. Please click here for more information on power requirements, or check with us if you are unsure or need any assistance!

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