Honeywell Programmable Thermostats
1 Week Programmable

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1-Week Programmable Thermostat (RTH221B1021)
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



1-Week Programmable Thermostat (RTH221B)
Our basic 1-Week Programmable Thermostat is easy to operate and has simple programming. There’s only one program for the entire week. You can select up to four options such as wake, leave, return and sleep to customize your weekly schedule. Other features such as precise temperature control add to your comfort level.

  • Simple programming (one program for entire week, plus four periods per day)
  • Easy to use
  • Precise temperature control
  • Sleek one-piece design
  • One-year warranty
  • DIY installation



1-Week Programmable Thermostat (RTHL221B)
Imagine the KISS principle applied to thermostats, and that’s what you get with our 1-Week Programmable Thermostat. It offers basic operation in a sleek one-piece design. You can set a program for the entire week with up to four periods per day, accounting for sleep, wake, leave and return. Features like display options for temperature and time, as well as precision comfort control, add to the thermostat’s simplicity and comfort.

  • Simple programming (one program for entire week, plus four periods per day)
  • Easy to use
  • Display options (Celsius or Fahrenheit temperature — 12- or 24-hour clock)
  • Sleek one-piece design
  • One-year warranty
  • DIY installation



1-Week Programmable Thermostat (RTH221B1039)
Our 1-Week Programmable Thermostat is easy to use and compatible with low volt heating/cooling system, including millivolt and single-stage heat pumps without auxiliary heat. It features simple programming. Just program the entire week. If necessary, you can also program up to four periods per day like sleep, wake, leave and return.

  • Simple programming (one program for entire week, plus four periods per day)
  • Easy to use
  • Precise temperature control
  • Sleek one-piece design
  • One-year warranty
  • DIY installation