# 3 - Honeywell Rth221b1021/e1 Rth221b1021/a 1 Week Programmable Thermostat
About Honeywell RTH221B1021/E1 RTH221B1021/A 1 Week Programmable Thermostat
A simple, easy to use 1-week programmable thermostat. You set it up to adjust the temperature when you are away or asleep-times when you don't necessarily need to heat or cool your home to optimum comfort-and your HVAC equipment runs less. Plus, your heating or cooling comes back to the comfort level you desire before you come home or wake up. Honeywell programmable thermostats are easy to install and are pre-programmed for your convenience. For more than a century, Honeywell thermostats have been the popular choice of homeowners. This thermostat is compatible with single-stage heating/cooling systems, heating, cooling, heat pumps…
- One program for the entire week-4 periods per day
- Digital display;Dimensions: 3-3/8 inches wide x 4-3/4 inches. high x 1-1/8 inches deep.
- Compatible with heating, cooling and heat pumps without auxiliary heat, Does not work with electric baseboard heat (120-240V) multistage HVAC systems
- Accurate temperature control of +/-1-Degree F for consistent comfort
- Display options: Fahrenheit or Celsius temperature display, 12 or 24 hour clock