First Things First
The first thing to do is make sure that you are shopping for the right model. The RTH230B will work with most standard systems. However, if you have a heat pump or a multiple stage system, you will need to check out the other models that are available. If you have a heat pump without backup heat, you might want to try the 2300B. However, check with the manufacturer before you buy online. If you plan to buy at a home improvement center, someone will be there to assist you.
This model is fairly easy to install. I installed by CT3200A without trouble and from reviews I am reading on Amazon, the new model seems to be easy to install also. You will need to sit down and go through the instructions first. Also, if you are not mechanically or electrically inclined, let someone else do it.
How it Works
This thermostat is programmable and you get to program for weekdays (when most people work), and for weekends (when most people are home). There are four settings for each of the two programs.
For example, in the winter, set if for 63F or 17C while you are sleeping, or at work in the daytime. Set it for a nice warm 78F or 25C for getting up in the morning, and for when you get home at night. In the summertime, set the program for warmer temps when you are asleep or away, and cooler temps for getting up in the morning and when you arrive home in the evening.
You can save a lot of money on your utility bills when you take the load off your furnace or ac unit. It will not take long for these new models to pay for themselves. The RTH230B is not an expensive model, but it gets the job done. The list price is about $40, but I have found it online for under $30.
This unit is getting very good reviews at Amazon. Out of 63 reviews 23 people rate it at 5 stars and 15 give it 4 stars. 7 people rate it at one star and 18 give it 2 or 3 stars. Most of the lower stars are not for performance, they are for things like not having the display backlit. One person gave it 3 stars because you have to put batteries in it. All in all, the reviews for this product look pretty encouraging. I believe that it is well worth the money, and it can save you more money that it costs, possibly in the first heating or cooling season.
For more information, you can go to http://posturown.com/time-wall-thermostat/.