Honeywell Programmable Thermostats


1-Week Programmable RTH221B1039 Thermostat

Brand :

Basic operation. Precise temperature control. Sleek one-piece design

  • - Simple Programming - One program runs for the entire week (4 periods per day)
    - Easy-To-Use - Basic operation keeps programming easy
    - Works with low volt heating/cooling systems including millivolt & single-stage heat pumps without auxiliary heat
    - Does not work with heat pump systems with back-up heat or electric baseboard heat (120-240V)
    - 1 Year Limited Warranty