Honeywell 5-1-1 Day Programmable Thermostat with Backlight-RTH6450D at The Home Depot
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Model # RTH6450D

Internet # 202491353

Store SKU # 835702

5-1-1 Day Programmable Thermostat with Backlight

Honeywell 5-1-1 Day Programmable Thermostat with Backlight

This item has been discontinued.
The Home Depot no longer carries this specific product.

$69.98 / each
Item cannot be shipped to the following state(s): GU,PR,VI


Model # RTH6450D

Internet # 202491353

Store SKU # 835702

The Honeywell 5-1-1 Day Programmable Thermostat with Backlight allows you to keep your home at an ideal temperature at any time of day. The programmable function helps you to save money and energy by automatically adjusting the temperature during the day or night based on your settings. The thermostat features a backlit display and easy-to-use control buttons for simple operation.

  • 7-day programming allows you to adjust the temperature for 4 program periods per day
  • Simple, intuitive buttons offer convenience and easy operation
  • Compatible with almost all heating or cooling systems including heat pumps
  • Backlit display allows you to see the settings even at night or in dimly lit rooms

Info & Guides

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Assembled Depth (in.)  1.25 in  Assembled Height (in.)  3.75 in 
Assembled Width (in.)  5.75 in  Batteries Included  No 
Battery Size  AA  Certifications and Listings  No Certifications or Listings 
Color Family  Whites  Display height (in.)  1.5 in 
Display width (in.)  2.75 in  ENERGY STAR Certified  No 
Manufacturer Warranty  1 Year Limited Warranty  Number of HVAC Zones 
Periods per Programmable Day  Product Depth (in.)  1.25 
Product Height (ft.)  3.75  Product Width (in.)  5.75 
Returnable  90-Day  Shape  Rectangle 
Thermostat Features  Automatic Heating/Cooling Changeover,Backlit,Battery Operated,Low Battery Indicator,Removable Interface  Thermostat Type  Heating and Cooling 
Voltage (volts)  24 


Rated 3.8 out of 5 by 13 reviewers.
Rated 4 out of 5 by good thermostat, programming a challenge The thermostat works just fine. We have a lot of Honeywells throughout our facilities. This particular one was purchased because of the auto heat/cool. Initially the auto feature was not appearing for heat/cool. You need to go into the advanced setup menu to access feature 12, then set it to auto switchover. The manual does explain this in the advanced setup section. It is very easy to do, but the thermostat did not come with this feature already enabled. That was probably a poor, but necessary choice on Honeywell's part. I would purchase this product again and recommend it to others. Just be prepared to do some more programming than you may have been used to. May 16, 2014
Rated 5 out of 5 by As Advertised: Easy Install Simple install with our furnace/air system. The install instructions were simple, concise, and yet detailed enough to make install a breeze. It powered right up and functioned perfectly. One piece of advice. For securing the thermostat wires to the terminals on the unit you need a very tiny flat head screwdriver. I happened to have a set of precision screw drivers, but if I hadn't it would have meant another trip to the store. It also does NOT come with the 2-AA batteries required for operation, so make sure you have those on hand. I thought the batteries were only for memory in case the power goes out, but the furnace cable does not power this unit. July 23, 2011
Rated 3 out of 5 by 1-degree swing! This was a replacement for a 20+ year-old programmable thermostat. The Honeywell thermostat was easy to install and easy to program. It seems like a quality product that works exactly as described -- I just wish I had read the description more carefully. This thermostat has a 1-degree swing; that means if the cooling is set for 78-degrees, it turns on the a/c when the room temp is 79-degrees and turns it off at 78-degrees. Consequently, my a/c is constantly cycling. It turns on and runs for a few minutes, then it turns off. My concern is that -- since the power surge at startup is between 200% and 300% of running power needs -- the thermostat makes the a/c use more energy due to more frequent starting. I'd replace it and return it if I could, but I already threw away the old thermostat and all the Honeywell thermostats at Hone Depot all have the same 1-degree swing. I'm going to look at other programmable thermostats for one that has a larger swing so my a/c doesn't cycle as often. July 29, 2014
Rated 5 out of 5 by Excellent Product I found this thermostat very easy to set up and program. Nothing confusing about it at all, and I can switch from program mode to manual with ease. July 22, 2014
Rated 5 out of 5 by HVAC Thermostat I bought this for my parents house, their old thermostat was blown by a lightning strike to the house. Simple to wire, just match the wire colors and connect. The new thermostat is easy for them to use. They love the comfort improvement over the old thermostat that was also electronic. This thermostat holds the house within 1 degree and so far they have had no need to bump it up or down. They say the house is more comfortable than it has ever been. July 12, 2012
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