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Honeywell RTH230B 5-2 Day Programmable Thermostat
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Honeywell RTH230B 5-2 Day Programmable Thermostat

by Honeywell
3.5 out of 5 stars  See all reviews (134 customer reviews) 4 answered questions

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  • Plastic
  • Large display with soft-touch button interface
  • Precise temperature control of +/-1-degreesF with auto change from heat to cool.
  • Programming for weekdays, plus weekends.
  • Fahrenheit or Celsius temperature display with 12 or 24 hour time display
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Product Information

Technical Details
Part Number RTH230B1006A
Item Weight7.2 ounces
Product Dimensions11 x 7.5 x 9.2 inches
Item model numberRTH230B
Power Sourcebattery-powered
Item Package Quantity1
Display StyleDigital
Batteries Required?Yes
Warranty Description1 Year Product Warranty
Additional Information
Best Sellers Rank #155,633 in Home Improvement (See top 100)
Shipping Weight7.2 ounces
ShippingThis item is also available for shipping to select countries outside the U.S.
Date First AvailableApril 15, 2006

Product Description

Product Description

"HONEYWELL" DIGITAL THERMOSTAT Digital Heat/Cool Thermostat 5/2 Programming With 4 Periods Per Day Energy Star For Use With Central Gas,Oil, Or Electric Furnaces & Air Conditioning For Single Stage Heating & Cooling Or Milli Volt Systems Large,Easy To Read Display Program memory in the event of power outage Precise temperature control of ± 1 degree F for consistent comfort Includes change reminders for filter Requires 2 - AA batteries not included Easy Access Battery Compartment Filter Change Indicator Temp Control +/- 1°ree. Fahrenheit Energy Star Rated

From the Manufacturer

A Honeywell programmable thermostat can save you up to 33 percent 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 stylish thermostat offers easy pre-programmed set up.

Customer Reviews

Most Helpful Customer Reviews
72 of 77 people found the following review helpful
I finally decided mid way through the summer to replace my aging thermostat with a more modern programable one after the shock of the first summer electric bill. Every day I would raise the thermostat before I left, but ocassionally I'd forget and waste a days worth of cooling. There are many choices for thermostats, and I initially looked at this model because of the name, Honeywell, A brand that I recognize and Know is a major player in thermostats and climate controll. I purchased this model because of its great step by step instruction and ease of installation. I have worked with other older programable thermostats, and many use to be difficult to program and even more dificult to figure out the display. Well, this unit has a nice easy to read picture display, and the programing is a snap. One feature that is nice is that it has 4 programable times during the day: wake up, going to work, home from work, bedtime, allowing you to save energy over the day, but also over night when it is cooler. It also has easy to program saturday and sunday settings as well, with available 4 programing settings as well if needed. So if your in the market for a new thermostat, this is a nice simple unit, affordable, and easy to use, why waste more money on a more expensive model.
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33 of 37 people found the following review helpful
4.0 out of 5 stars Great thermostat--lousy installation directions January 20, 2007
Verified Purchase
I installed this thermostat to control a gas furnace, following the wiring instructions. The instructions said to remove the jumper wire in the connection terminal if you had a two-wire control circuit. I did as instructed; the furnace came on but would not quit. After I played with the unit for several hours, my wife checked the Honeywell website, and finally found that the instructions there said that the jumper was mandatory for proper operation if you had a single transformer and a two wire system. I put the jumper back on and the thermostat has worked flawlessly since. The thermostat works really well, but the directions stink.
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16 of 17 people found the following review helpful
2.0 out of 5 stars MEH January 11, 2011
Simple install although I'm using it for heat only on a gas fired boiler which is the easiest install.
Programming is not intuitive, but not as hard as some reviewers make it out to be. It's right up there with setting/programming a cheap digital watch. But it COULD be so much simpler.
Numbers are easy to read and overriding program is as easy as hitting up or down on the temp.
The BAD thing that really brought down my rating is that the temp readout, of what temp the room is... sucks. It "sticks" at a number most of the time, it's weird. You'd think a quality thermometer would be used in a digital thermostat! I checked it's readout against several other thermometers which all read consistent. This unit reads anywhere from 2 to 8 degrees out of whack. It could say the room is 70 when it's really 63. Pop/reinstall the batteries and it magically says 63... until it hits 70 again, then the 70 readout remains even after room cools down. UGH, and since it's inconsistent I cant just set it low to compensate.
Gotta find another one.
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8 of 8 people found the following review helpful
4.0 out of 5 stars Good option for the price but you should be aware of... December 14, 2008
By Boo
Verified Purchase
As other reviewers have said the product is easy to install and it is also very easy to program. However, there are a few things you should be aware of.

- It is battery powered, meaning that if the batteries on the thermostat die, your AC system will stop working until you replace them. The better models get their power from the wires on the wall.

- Even though installing it is very easy (all you need is a screw driver and pliers) and the instructions are clear, make sure you know what you are doing or have a professional install it. We had 5 wires going to our old thermostat so we followed the 5-wire instructions on the user's manual. By doing so, a transformer burnt out and we had to pay $140 to get it repaired. Turns out that even though we had 5 wires going to our old thermostat, we only needed 4 for this one, which according to our AC guy, we couldn't had known unless we worked with AC units all the time.

- There are no troubleshooting or installation instructions for this particular model on the Honeywell's website. They have some cool wizards there but this model is not included.
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10 of 11 people found the following review helpful
1.0 out of 5 stars Broke After Less Than A Year February 26, 2011
This thing was a piece of junk from day one. Getting the front plate to snap on is a pain. It took me 20 minutes of fiddling with it to finally get it to latch right.

It never kept our house at a constant temperature. If we set it at 68, it read anywhere from 67-71. If it was reading 70 when it was set at 68, the heat would still go on.

Last week the heat wasn't kicking on at all so I replaced the batteries with brand new ones. It took a half hour for the heat to finally go on. We don't use discount/cheap batteries here, we always use name brand. So it's not cheap batteries that's the problem.

Today, the heat wasn't working again and I went down to check the pilot light on the furnace. That was fine so I replaced the batteries again and the heat went on immediately. Long story short? This thing is a piece of junk that eats through batteries like no tomorrow. When I told my uncle, who is a seasoned Mr. Fix It, that I just replaced the batteries last week, he told me that it's probably eating through the batteries so fast because something on the board is shot. So we paid $30 for something that lasted less than a year. Needless to say, when my husband comes home from work today we will be taking a trip to the hardware store to buy a new thermostat that ISN'T a Honeywell.

DO NOT BUY THIS UNIT!!!! Spend an extra $20 and get a better quality thermostat from a different company.
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Most Recent Customer Reviews
1.0 out of 5 stars Don't buy it! Junk. Too hard to replace batteries.
This is really a piece of crap! It's so hard to replace the batteries! Whoever designed this product should be fired by the company with no questions asked, because he or she has... Read more
Published 7 days ago by Yan Wang
1.0 out of 5 stars Not what I expected from a Honeywell Device
lasted 4 years and a thermostat only used for heating should last forever.
Published 21 days ago by Anthony J. Charbonneau
5.0 out of 5 stars Easy to install and works great
This is the second one in our house, they are used for zoned hot water heating. Easy to install and works great. Read more
Published 1 month ago by Happy camper
1.0 out of 5 stars And don't get me started on the stupid cover plate that you have to...
I have 2 of these in the house we just bought. One for the upstairs unit and one for the downstairs unit. Read more
Published 1 month ago by Amazon Customer
4.0 out of 5 stars Four Stars
works well, could be a little easier to program.
Published 2 months ago by Merry
5.0 out of 5 stars Five Stars
easy to install and setup.
Published 2 months ago by Wallace Barber
3.0 out of 5 stars Three Stars
Works fine.
Published 3 months ago by h2otaco
5.0 out of 5 stars Five Stars
Works great, easy on the eyes, does not glow at you.
Published 3 months ago by Paul E. Richardson
2.0 out of 5 stars Frustrating love/hate relationship
I've had this thermostat for several years now and I have a love/hate relationship with it. I like that I can program it for 4 different temps on weekdays and different temps... Read more
Published 6 months ago by Old Drums
5.0 out of 5 stars A worthy replacement
I replaced the original thermostat in my home with this one and I can't say enough good about it. The manual is clear as to how to program it, but you MUST be able to follow... Read more
Published 7 months ago by William M. Lovins
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