7 DY PROGRAM THERMOSTAT
7 DY PROGRAM THERMOSTATModel# RTH221B1039/E1
Honeywell 1-Week Programmable Digital Thermostat Honeywell International RTH221B1039/E1
10 in stock (can be backordered)
Digital 2 heat/1 cool. 1 week programming with 4 periods per day. For use with central gas, oil, or electric furnaces and A/C. For millivolt systems. For heat pumps without aux heat. Precise temperature control (+/-1 degree). Easy-to-install.