5-1-1 Day Programmable Thermostat (RTH6450D)

The 5-1-1 Day Programmable Thermostat – RTH6450D is simple and straightforward. It comes with weekday programming with separate programs for Saturdays and Sundays. The Smart Response Technology adds comfort and convenience while at home.
Verify compatibility with your home heating and cooling system, remove your existing thermostat and follow step-by-step instructions for installation.

A thermostat aligned with the way you live

Our 5-1-1 Day Programmable Thermostat – RTH6450D fits your schedule and helps ensure maximum comfort in your home. Program weekdays to your routine and set up Saturday and Sunday with unique programs. Other must-have features include the easy to read backlit display, auto change from heating to cooling and Smart Response Technology to pre-heat/cool your home at programmed times.

  • 5-1-1 Day Programming (program week and Saturday/Sunday, up to four periods per day)
  • Easy to use
  • Backlit display
  • Smart Response Technology
  • Auto change from heating to cooling
  • One-year limited warranty
  • DIY installation
Smart Response Technology
Continually adjust the pre-heating/cooling of your home so you are comfortable at your programmed times
Large Backlit Display
Easy to read, even in dimly lit rooms and hallways
  • Model number: RTH6450D1009
  • Color: White
  • Dimensions: 5-3/4 in. wide x 3-3/4 in. high x 1-1/4 in. deep

Compatible with systems

  • This thermostat is compatible with low volt heating/cooling systems, plus heat pump systems.
  • It is not compatible with electric baseboard heat (120/240V).

Follow the quick installation guide that comes with the 5-1-1-Day-Program-Thermostat-RTH6450D. If you misplaced this guide, you can find it in the resources section below. Installation is fast and easy. Remove your old thermostat, but be sure to label the wires. Install and wire your new thermostat. Set your new thermostat to match your heating/cooling system.


Download PDF
Installation Addendum for Wall Plates
Model: RTH6350D, RTH6450D
Download PDF
5-1-1 Day Programmable Thermostat Owner's Manual
Model: RTH6350,RTH6450,RET93E0,RET95E0
Download PDF
5-1-1 Day Programmable Thermostat Installation Manual
Model: RTH6350,RTH6450
Download PDF
5-1-1 Day Programmable Thermostat Scheduling Time/Date/Program
Model: RTH6450D1009

Need support for this product?