|Item Weight||11.5 ounces|
|Product Dimensions||3.2 x 9 x 8.2 inches|
|Item model number||RTH6400D|
|Discontinued by manufacturer||Yes|
|Item Package Quantity||1|
|Warranty Description||1 Year Product Warranty|
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Honeywell RTH6400D 5-1-1-Day Programmable Thermostat
|Price:||$54.95 & FREE Shipping. Details|
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- Service provided by a local pro
- Removal of existing thermostat
- Installation of 1 new thermostat
- Testing new thermostat for proper function
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- Large backlit display with soft-touch button interface
- Precise temperature control of plus-or-minus-degrees Fahrenheit with auto change from heat to cool
- Exclusive Honeywell Smart Response Technology and filter change reminder
- Compatible with heating and cooling system plus single stage heat pump systems
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You know that turning down your heat at night saves you money, but you hate waking up and making breakfast in a freezing cold kitchen. Or you don't want to run your AC all day while you're at work, but you want your home to be cool and comfortable when you get home. That's where a programmable thermostat makes all the difference.
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). 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.
Broad Compatibility for Use with Your Existing System
This thermostat is compatible with a broad range of 24-volt heating and air conditioning systems, including single-stage heating and cooling, heat pump systems without auxiliary (back-up) heat, gas fireplaces, and heating only or cooling only systems. It is not compatible with multi-stage heating and cooling, heat pump systems with auxiliary (back-up) heat, and electric baseboard heat (120-240 volts).
With over 120 years of trusted reliability, Honeywell International is a diversified technology and manufacturing leader, serving customers worldwide with aerospace products and services; control technologies for buildings, homes and industry; automotive products; turbochargers; and specialty materials.
Whether you're flying on a plane, driving a car, heating or cooling a home, furnishing an apartment, taking medication or playing a sport, Honeywell products touch most peoples' lives everyday. Honeywell technologies are found in more than 150 million homes, 10 million buildings and a multitude of manufacturing plants around the world.
What's in the Box
RTH6400D 5-1-1 Programmable Thermostat, wire labels, wall anchors, mounting hardware, and an installation and user guide
From the Manufacturer
Top Customer Reviews
When reading previous reviews, I had some concerns that almost caused me to not order the product. Luckily, I found that none of these issues presented a problem for me. Here are some of the problems discussed in previous reviews, followed by my answers:
1) Issue: There is no dedicated backlight button and it is not possible to activate the backlight without pressing a button which will then alter thermostat programming. Answer: I found this *not* to be true, and just pressing the temperature up or down button once causes the backlight to come on without changing the temperature set point (just press the button more than once to change the set point). Surprisingly, I didn't see this feature mentioned in any of the product literature.
2) Issue: When setting the unit to "cool", the compressor will *never* come on until the compressor protection interval has expired (five minutes).Read more ›
Other than that, it's simple to use, much moreso than the 7 day thermostat from Honeywell, which takes an engineer to program (that model's only advantage is that it automatically keeps track of Daylight savings time, and contrary to its advertising, it still requires a battery). Programming on this model consists literally of pushing the same button again and again to cycle through your programming, and you need only hit the up/down buttons to change time and temp. Couldn't be easier. I've ordered two more.
Also, ontrary to what one reviewer said, pushing the button at night to get the backlight to turn on does NOT change the setting. You have to hit the button twice to do that. Night viewing is easy to read.
Most Recent Customer Reviews
I've owned this for over five years now and it's still as rock solid and dead simple to use as the day I got it. It's ridiculously easy to install. Read morePublished 23 months ago by Mark David Zahn
can not install according to instructions.hooked up wires according to instructions and I get fan and heat on heat and on cool with the temp. setting well below room temp. Read morePublished 23 months ago by robert hauff
I had it for over a year now and it works just fine and accurately. No problem at all. I would buy another one if I ever needed one. Read morePublished on April 8, 2014 by Jack
Set them and forget them.
Great sturdy product and very easy to program.
Don't have to be a rocket scientist...
Cuando instalaron la unidad de aire acondicionado en mi casa lo hicieron con un termostato analogico, yo sentia que la misma no rendia lo que indicaba en la potencia nominal del... Read morePublished on July 26, 2011 by Rafael
I have had to replace two programmable Honeywell thermostats within a year. Because I believed that I just bought a lemon the first tome, I replaced with another, same model. Read morePublished on June 21, 2011 by Dinodon
Received this product at a great price and very promptly. Been using for some time and it's great and easy to set up and use. I highly reccomend this thermostat and this supplier.Published on December 28, 2010 by Amazon Customer