Honeywell RTH6400D 5-1-1-Day Programmable Thermostat

Honeywell RTH6400D 5-1-1-Day Programmable Thermostat 5-1-1 Day Programmable Thermostat, Backlit Display, Controls Temperature To =/- 1 Degree Of Set Point, Battery Powered, Energy Star Rated.

Honeywell RTH6400D 5-1-1-Day Programmable Thermostat Description

Maximize comfort, reduce household energy use, and save money with the RTH6400D 5-1-1 Programmable Thermostat from Honeywell. Featuring a user-friendly design that lets you program weekdays, Saturdays, and Sundays separately, this thermostat makes it easy to sync your home’s heating and cooling system with your schedule, and it is Energy Star rated for efficiency you can count on.

An Easy Way to Save Energy and Money
If programmed as directed, this thermostat also offers you the ability to save up to 33-percent on annual heating and cooling costs (savings may depend on the geographic region you live in and your energy usage). And it is ENERGY STAR rated in recognition of its energy saving capability. When it does come time to change the thermostat’s battery, an easy-access compartment makes battery replacement fast and painless.

Exclusive Technology for Reliability and Ease of Use
Programming and monitoring the thermostat is simple with a soft-touch button interface and an easy-to-read display that shows the current room temperature and the set temperature simultaneously. This display is backlit, making it easy to see even in dimly lit rooms and hallways. All readouts are rendered in natural language instead of confusing symbols, and you can select whether you would like temperature readouts to appear in Fahrenheit or Celsius.

The thermostat features Honeywell Smart Response Technology and a feature that enables Auto Changes from Heating to Cooling, which continually adjusting the pre-heating or cooling of your home for effective results and precise comfort control within one-degree F of your desired temperature. The thermostat offers temporary and permanent hold settings for greater convenience.

Honeywell RTH6400D 5-1-1-Day Programmable Thermostat Reviews

well worth it

I installed this unit back in September and it has saves about 27% of our normal heating fuel usage compared to the simple mercury switch unit it replaced. if only I had taken the plunge a few years ago I could have saved $1000′s just for spending $70. It is intuitive if you want the temp to be 69 at 7 am and it is currently 64 at 630 it will start up ahead of time so when the desired time hits it will be the temp you specified.

Easy to install, accurate to 1 deg

Easy to install if you follow instructions well.
It is very accurate as expected(+/- 1 degree). Much more accurate than the Honeywell Manual Thermostat(RTH110B) and another older Honeywell Thermostat that we had. Highly recommended.

The only drawback is that amazon shipped this small package in a large box without any filler. So, the package is rock and rolling the whole way from Amazon to my house.